)]}' { "log": [ { "commit": "4fa6b5ecbf092c6ee752ece8a55d71f663d23254", "tree": "6143912dc73b457a3be72faf31d46d855d3f87c3", "parents": [ "e3d6b07b8ba161f638b026feba0c3c97875d7f1c" ], "author": { "name": "Jeff Layton", "email": "jlayton@redhat.com", "time": "Wed Oct 10 15:25:25 2012 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Oct 12 00:32:03 2012 -0400" }, "message": "audit: overhaul __audit_inode_child to accomodate retrying\n\nIn order to accomodate retrying path-based syscalls, we need to add a\nnew \"type\" argument to audit_inode_child. This will tell us whether\nwe\u0027re looking for a child entry that represents a create or a delete.\n\nIf we find a parent, don\u0027t automatically assume that we need to create a\nnew entry. Instead, use the information we have to try to find an\nexisting entry first. Update it if one is found and create a new one if\nnot.\n\nSigned-off-by: Jeff Layton \u003cjlayton@redhat.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "e3d6b07b8ba161f638b026feba0c3c97875d7f1c", "tree": "d40cea06665f9092820d76948d38e329c178011b", "parents": [ "29e9a3467c1367549568d7d411d5f30209ae181b" ], "author": { "name": "Jeff Layton", "email": "jlayton@redhat.com", "time": "Wed Oct 10 15:25:25 2012 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Oct 12 00:32:02 2012 -0400" }, "message": "audit: optimize audit_compare_dname_path\n\nIn the cases where we already know the length of the parent, pass it as\na parm so we don\u0027t need to recompute it. In the cases where we don\u0027t\nknow the length, pass in AUDIT_NAME_FULL (-1) to indicate that it should\nbe determined.\n\nSigned-off-by: Jeff Layton \u003cjlayton@redhat.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "29e9a3467c1367549568d7d411d5f30209ae181b", "tree": "9da23e302f9dcff070f9187f2882ee76262be601", "parents": [ "563a0d1236c2c58d584ef122a5cdc9930e5860b3" ], "author": { "name": "Eric Paris", "email": "eparis@redhat.com", "time": "Wed Oct 10 15:25:24 2012 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Oct 12 00:32:02 2012 -0400" }, "message": "audit: make audit_compare_dname_path use parent_len helper\n\nSigned-off-by: Eric Paris \u003ceparis@redhat.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "563a0d1236c2c58d584ef122a5cdc9930e5860b3", "tree": "4432b3b2f6ef6c19e9bded14ae31942e2b58bd84", "parents": [ "bfcec7087458812f575d9022b2d151641f34ee84" ], "author": { "name": "Jeff Layton", "email": "jlayton@redhat.com", "time": "Wed Oct 10 15:25:24 2012 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Oct 12 00:32:01 2012 -0400" }, "message": "audit: remove dirlen argument to audit_compare_dname_path\n\nAll the callers set this to NULL now.\n\nSigned-off-by: Jeff Layton \u003cjlayton@redhat.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "bfcec7087458812f575d9022b2d151641f34ee84", "tree": "6c0f7dd3b016992da8d113ceeaae404c6abc03a1", "parents": [ "78e2e802a8519031e5858595070b39713e26340d" ], "author": { "name": "Jeff Layton", "email": "jlayton@redhat.com", "time": "Wed Oct 10 15:25:23 2012 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Oct 12 00:32:01 2012 -0400" }, "message": "audit: set the name_len in audit_inode for parent lookups\n\nCurrently, this gets set mostly by happenstance when we call into\naudit_inode_child. While that might be a little more efficient, it seems\nwrong. If the syscall ends up failing before audit_inode_child ever gets\ncalled, then you\u0027ll have an audit_names record that shows the full path\nbut has the parent inode info attached.\n\nFix this by passing in a parent flag when we call audit_inode that gets\nset to the value of LOOKUP_PARENT. We can then fix up the pathname for\nthe audit entry correctly from the get-go.\n\nWhile we\u0027re at it, clean up the no-op macro for audit_inode in the\n!CONFIG_AUDITSYSCALL case.\n\nSigned-off-by: Jeff Layton \u003cjlayton@redhat.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "78e2e802a8519031e5858595070b39713e26340d", "tree": "92f79d2039f4119a127ab59e31a2d1c9dfb892fe", "parents": [ "c43a25abba97c7d87131e71db6be24b24d7791a5" ], "author": { "name": "Jeff Layton", "email": "jlayton@redhat.com", "time": "Wed Oct 10 15:25:22 2012 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Oct 12 00:32:00 2012 -0400" }, "message": "audit: add a new \"type\" field to audit_names struct\n\nFor now, we just have two possibilities:\n\nUNKNOWN: for a new audit_names record that we don\u0027t know anything about yet\nNORMAL: for everything else\n\nIn later patches, we\u0027ll add other types so we can distinguish and update\nrecords created under different circumstances.\n\nSigned-off-by: Jeff Layton \u003cjlayton@redhat.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "c43a25abba97c7d87131e71db6be24b24d7791a5", "tree": "0fe959853254064e17805ca111838e7869720e43", "parents": [ "9cec9d68ae53aae60b4a1fca4505c75a1d026392" ], "author": { "name": "Jeff Layton", "email": "jlayton@redhat.com", "time": "Wed Oct 10 15:25:21 2012 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Oct 12 00:32:00 2012 -0400" }, "message": "audit: reverse arguments to audit_inode_child\n\nMost of the callers get called with an inode and dentry in the reverse\norder. The compiler then has to reshuffle the arg registers and/or\nstack in order to pass them on to audit_inode_child.\n\nReverse those arguments for a micro-optimization.\n\nReported-by: Eric Paris \u003ceparis@redhat.com\u003e\nSigned-off-by: Jeff Layton \u003cjlayton@redhat.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "9cec9d68ae53aae60b4a1fca4505c75a1d026392", "tree": "da913dbacdb569b382182beb70c660ac93a39e5a", "parents": [ "1c2e51e8c162417d2831007ec256ede06c3a0201" ], "author": { "name": "Jeff Layton", "email": "jlayton@redhat.com", "time": "Wed Oct 10 15:25:21 2012 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Oct 12 00:31:59 2012 -0400" }, "message": "audit: no need to walk list in audit_inode if name is NULL\n\nIf name is NULL then the condition in the loop will never be true. Also,\nwith this change, we can eliminate the check for n-\u003ename \u003d\u003d NULL since\nthe equivalence check will never be true if it is.\n\nSigned-off-by: Jeff Layton \u003cjlayton@redhat.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "1c2e51e8c162417d2831007ec256ede06c3a0201", "tree": "c21a641405f7de220f16be4d2e74fec387ec92a9", "parents": [ "f78570dd6ad9563fffd24cc5e1808e1a1242f16e" ], "author": { "name": "Jeff Layton", "email": "jlayton@redhat.com", "time": "Wed Oct 10 15:25:20 2012 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Oct 12 00:31:59 2012 -0400" }, "message": "audit: pass in dentry to audit_copy_inode wherever possible\n\nIn some cases, we were passing in NULL even when we have a dentry.\n\nReported-by: Eric Paris \u003ceparis@redhat.com\u003e\nSigned-off-by: Jeff Layton \u003cjlayton@redhat.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "79360ddd73dfe9a26f49ef4e27b8c26612929b0e", "tree": "a8b0d226e0d83ea4e3a8c27b091a7121dbb9638b", "parents": [ "8213a2f3eeafdecf06dd718cb4130372263f6067", "98f6ef64b15a48f15062aff5d143b5d9a6ae7711" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Oct 12 10:52:03 2012 +0900" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Oct 12 10:52:03 2012 +0900" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs\n\nPull pile 2 of vfs updates from Al Viro:\n \"Stuff in this one - assorted fixes, lglock tidy-up, death to\n lock_super().\n\n There\u0027ll be a VFS pile tomorrow (with patches from Jeff Layton,\n sanitizing getname() and related parts of audit and preparing for\n ESTALE fixes), but I\u0027d rather push the stuff in this one ASAP - some\n of the bugs closed here are quite unpleasant.\"\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:\n vfs: bogus warnings in fs/namei.c\n consitify do_mount() arguments\n lglock: add DEFINE_STATIC_LGLOCK()\n lglock: make the per_cpu locks static\n lglock: remove unused DEFINE_LGLOCK_LOCKDEP()\n MAX_LFS_FILESIZE definition for 64bit needs LL...\n tmpfs,ceph,gfs2,isofs,reiserfs,xfs: fix fh_len checking\n vfs: drop lock/unlock super\n ufs: drop lock/unlock super\n sysv: drop lock/unlock super\n hpfs: drop lock/unlock super\n fat: drop lock/unlock super\n ext3: drop lock/unlock super\n exofs: drop lock/unlock super\n dup3: Return an error when oldfd \u003d\u003d newfd.\n fs: handle failed audit_log_start properly\n fs: prevent use after free in auditing when symlink following was denied\n" }, { "commit": "8213a2f3eeafdecf06dd718cb4130372263f6067", "tree": "0d02e3201dac64d1429f8552ee1163d4a1ef1646", "parents": [ "40924754f2cabd5d9af4bcd4dcecc362b5e0baa1", "12f79be93d94698778ff2b3f921073fc5f6780d6" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Oct 12 10:49:08 2012 +0900" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Oct 12 10:49:08 2012 +0900" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal\n\nPull pile 2 of execve and kernel_thread unification work from Al Viro:\n \"Stuff in there: kernel_thread/kernel_execve/sys_execve conversions for\n several more architectures plus assorted signal fixes and cleanups.\n\n There\u0027ll be more (in particular, real fixes for the alpha\n do_notify_resume() irq mess)...\"\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (43 commits)\n alpha: don\u0027t open-code trace_report_syscall_{enter,exit}\n Uninclude linux/freezer.h\n m32r: trim masks\n avr32: trim masks\n tile: don\u0027t bother with SIGTRAP in setup_frame\n microblaze: don\u0027t bother with SIGTRAP in setup_rt_frame()\n mn10300: don\u0027t bother with SIGTRAP in setup_frame()\n frv: no need to raise SIGTRAP in setup_frame()\n x86: get rid of duplicate code in case of CONFIG_VM86\n unicore32: remove pointless test\n h8300: trim _TIF_WORK_MASK\n parisc: decide whether to go to slow path (tracesys) based on thread flags\n parisc: don\u0027t bother looping in do_signal()\n parisc: fix double restarts\n bury the rest of TIF_IRET\n sanitize tsk_is_polling()\n bury _TIF_RESTORE_SIGMASK\n unicore32: unobfuscate _TIF_WORK_MASK\n mips: NOTIFY_RESUME is not needed in TIF masks\n mips: merge the identical \"return from syscall\" per-ABI code\n ...\n\nConflicts:\n\tarch/arm/include/asm/thread_info.h\n" }, { "commit": "d1c7d97ad58836affde6e39980b96527510b572e", "tree": "4020ac7f88154d5dd919fdf371472ea9153a656e", "parents": [ "ffd8d101a3a7d3f2e79deee1e342801703b6dc70" ], "author": { "name": "Sasha Levin", "email": "sasha.levin@oracle.com", "time": "Thu Oct 04 19:57:31 2012 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Oct 09 23:33:37 2012 -0400" }, "message": "fs: handle failed audit_log_start properly\n\naudit_log_start() may return NULL, this is unchecked by the caller in\naudit_log_link_denied() and could cause a NULL ptr deref.\n\nIntroduced by commit a51d9eaa (\"fs: add link restriction audit reporting\").\n\nSigned-off-by: Sasha Levin \u003csasha.levin@oracle.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "42859eea96ba6beabfb0369a1eeffa3c7d2bd9cb", "tree": "fa38aeda0d6e7a4c48a882b166b8643594a1ad50", "parents": [ "f59b51fe3d3092c08d7d554ecb40db24011b2ebc", "f322220d6159455da2b5a8a596d802c8695fed30" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Oct 10 12:02:25 2012 +0900" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Oct 10 12:02:25 2012 +0900" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal\n\nPull generic execve() changes from Al Viro:\n \"This introduces the generic kernel_thread() and kernel_execve()\n functions, and switches x86, arm, alpha, um and s390 over to them.\"\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (26 commits)\n s390: convert to generic kernel_execve()\n s390: switch to generic kernel_thread()\n s390: fold kernel_thread_helper() into ret_from_fork()\n s390: fold execve_tail() into start_thread(), convert to generic sys_execve()\n um: switch to generic kernel_thread()\n x86, um/x86: switch to generic sys_execve and kernel_execve\n x86: split ret_from_fork\n alpha: introduce ret_from_kernel_execve(), switch to generic kernel_execve()\n alpha: switch to generic kernel_thread()\n alpha: switch to generic sys_execve()\n arm: get rid of execve wrapper, switch to generic execve() implementation\n arm: optimized current_pt_regs()\n arm: introduce ret_from_kernel_execve(), switch to generic kernel_execve()\n arm: split ret_from_fork, simplify kernel_thread() [based on patch by rmk]\n generic sys_execve()\n generic kernel_execve()\n new helper: current_pt_regs()\n preparation for generic kernel_thread()\n um: kill thread-\u003eforking\n um: let signal_delivered() do SIGTRAP on singlestepping into handler\n ...\n" }, { "commit": "6bdb913f0a70a4dfb7f066fb15e2d6f960701d00", "tree": "9a61960b27bf801794104b8bb8fccee1813f1b4b", "parents": [ "2ec74c3ef2d8c58d71e0e00336fb6b891192155a" ], "author": { "name": "Haggai Eran", "email": "haggaie@mellanox.com", "time": "Mon Oct 08 16:33:35 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 09 16:22:58 2012 +0900" }, "message": "mm: wrap calls to set_pte_at_notify with invalidate_range_start and invalidate_range_end\n\nIn order to allow sleeping during invalidate_page mmu notifier calls, we\nneed to avoid calling when holding the PT lock. In addition to its direct\ncalls, invalidate_page can also be called as a substitute for a change_pte\ncall, in case the notifier client hasn\u0027t implemented change_pte.\n\nThis patch drops the invalidate_page call from change_pte, and instead\nwraps all calls to change_pte with invalidate_range_start and\ninvalidate_range_end calls.\n\nNote that change_pte still cannot sleep after this patch, and that clients\nimplementing change_pte should not take action on it in case the number of\noutstanding invalidate_range_start calls is larger than one, otherwise\nthey might miss a later invalidation.\n\nSigned-off-by: Haggai Eran \u003chaggaie@mellanox.com\u003e\nCc: Andrea Arcangeli \u003candrea@qumranet.com\u003e\nCc: Sagi Grimberg \u003csagig@mellanox.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Xiao Guangrong \u003cxiaoguangrong@linux.vnet.ibm.com\u003e\nCc: Or Gerlitz \u003cogerlitz@mellanox.com\u003e\nCc: Haggai Eran \u003chaggaie@mellanox.com\u003e\nCc: Shachar Raindel \u003craindel@mellanox.com\u003e\nCc: Liran Liss \u003cliranl@mellanox.com\u003e\nCc: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Avi Kivity \u003cavi@redhat.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "9826a516ff77c5820e591211e4f3e58ff36f46be", "tree": "bdec1e2fe5ff95569795069bac73977faba17d57", "parents": [ "9c079add0d0f45220f4bb37febf0621137ec2d38" ], "author": { "name": "Michel Lespinasse", "email": "walken@google.com", "time": "Mon Oct 08 16:31:35 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 09 16:22:40 2012 +0900" }, "message": "mm: interval tree updates\n\nUpdate the generic interval tree code that was introduced in \"mm: replace\nvma prio_tree with an interval tree\".\n\nChanges:\n\n- fixed \u0027endpoing\u0027 typo noticed by Andrew Morton\n\n- replaced include/linux/interval_tree_tmpl.h, which was used as a\n template (including it automatically defined the interval tree\n functions) with include/linux/interval_tree_generic.h, which only\n defines a preprocessor macro INTERVAL_TREE_DEFINE(), which itself\n defines the interval tree functions when invoked. Now that is a very\n long macro which is unfortunate, but it does make the usage sites\n (lib/interval_tree.c and mm/interval_tree.c) a bit nicer than previously.\n\n- make use of RB_DECLARE_CALLBACKS() in the INTERVAL_TREE_DEFINE() macro,\n instead of duplicating that code in the interval tree template.\n\n- replaced vma_interval_tree_add(), which was actually handling the\n nonlinear and interval tree cases, with vma_interval_tree_insert_after()\n which handles only the interval tree case and has an API that is more\n consistent with the other interval tree handling functions.\n The nonlinear case is now handled explicitly in kernel/fork.c dup_mmap().\n\nSigned-off-by: Michel Lespinasse \u003cwalken@google.com\u003e\nCc: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Daniel Santos \u003cdaniel.santos@pobox.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6b2dbba8b6ac4df26f72eda1e5ea7bab9f950e08", "tree": "422ed8d7ac2fe45069f20cfba84a9a097bf444af", "parents": [ "fff3fd8a1210a165252cd7cd01206da7a90d3a06" ], "author": { "name": "Michel Lespinasse", "email": "walken@google.com", "time": "Mon Oct 08 16:31:25 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 09 16:22:39 2012 +0900" }, "message": "mm: replace vma prio_tree with an interval tree\n\nImplement an interval tree as a replacement for the VMA prio_tree. The\nalgorithms are similar to lib/interval_tree.c; however that code can\u0027t be\ndirectly reused as the interval endpoints are not explicitly stored in the\nVMA. So instead, the common algorithm is moved into a template and the\ndetails (node type, how to get interval endpoints from the node, etc) are\nfilled in using the C preprocessor.\n\nOnce the interval tree functions are available, using them as a\nreplacement to the VMA prio tree is a relatively simple, mechanical job.\n\nSigned-off-by: Michel Lespinasse \u003cwalken@google.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Hillf Danton \u003cdhillf@gmail.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Catalin Marinas \u003ccatalin.marinas@arm.com\u003e\nCc: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nCc: David Woodhouse \u003cdwmw2@infradead.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "01dc52ebdf472f77cca623ca693ca24cfc0f1bbe", "tree": "2d0f35f2aff418d52a84fb50974ad3bacf68d4bd", "parents": [ "d5dc0ad928fb9e972001e552597fd0b794863f34" ], "author": { "name": "Davidlohr Bueso", "email": "dave@gnu.org", "time": "Mon Oct 08 16:29:30 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 09 16:22:24 2012 +0900" }, "message": "oom: remove deprecated oom_adj\n\nThe deprecated /proc/\u003cpid\u003e/oom_adj is scheduled for removal this month.\n\nSigned-off-by: Davidlohr Bueso \u003cdave@gnu.org\u003e\nAcked-by: David Rientjes \u003crientjes@google.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "314e51b9851b4f4e8ab302243ff5a6fc6147f379", "tree": "f757b89206355fd129830782566768693eed23ce", "parents": [ "0103bd16fb90bc741c7a03fd1ea4e8a505abad23" ], "author": { "name": "Konstantin Khlebnikov", "email": "khlebnikov@openvz.org", "time": "Mon Oct 08 16:29:02 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 09 16:22:19 2012 +0900" }, "message": "mm: kill vma flag VM_RESERVED and mm-\u003ereserved_vm counter\n\nA long time ago, in v2.4, VM_RESERVED kept swapout process off VMA,\ncurrently it lost original meaning but still has some effects:\n\n | effect | alternative flags\n-+------------------------+---------------------------------------------\n1| account as reserved_vm | VM_IO\n2| skip in core dump | VM_IO, VM_DONTDUMP\n3| do not merge or expand | VM_IO, VM_DONTEXPAND, VM_HUGETLB, VM_PFNMAP\n4| do not mlock | VM_IO, VM_DONTEXPAND, VM_HUGETLB, VM_PFNMAP\n\nThis patch removes reserved_vm counter from mm_struct. Seems like nobody\ncares about it, it does not exported into userspace directly, it only\nreduces total_vm showed in proc.\n\nThus VM_RESERVED can be replaced with VM_IO or pair VM_DONTEXPAND | VM_DONTDUMP.\n\nremap_pfn_range() and io_remap_pfn_range() set VM_IO|VM_DONTEXPAND|VM_DONTDUMP.\nremap_vmalloc_range() set VM_DONTEXPAND | VM_DONTDUMP.\n\n[akpm@linux-foundation.org: drivers/vfio/pci/vfio_pci.c fixup]\nSigned-off-by: Konstantin Khlebnikov \u003ckhlebnikov@openvz.org\u003e\nCc: Alexander Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Carsten Otte \u003ccotte@de.ibm.com\u003e\nCc: Chris Metcalf \u003ccmetcalf@tilera.com\u003e\nCc: Cyrill Gorcunov \u003cgorcunov@openvz.org\u003e\nCc: Eric Paris \u003ceparis@redhat.com\u003e\nCc: H. Peter Anvin \u003chpa@zytor.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: James Morris \u003cjames.l.morris@oracle.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Kentaro Takeda \u003ctakedakn@nttdata.co.jp\u003e\nCc: Matt Helsley \u003cmatthltc@us.ibm.com\u003e\nCc: Nick Piggin \u003cnpiggin@kernel.dk\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Robert Richter \u003crobert.richter@amd.com\u003e\nCc: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nCc: Tetsuo Handa \u003cpenguin-kernel@I-love.SAKURA.ne.jp\u003e\nCc: Venkatesh Pallipadi \u003cvenki@google.com\u003e\nAcked-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e9714acf8c439688884234dcac2bfc38bb607d38", "tree": "2e21c88f855a9f5168a143fa9948141140ff02a2", "parents": [ "2dd8ad81e31d0d36a5d448329c646ab43eb17788" ], "author": { "name": "Konstantin Khlebnikov", "email": "khlebnikov@openvz.org", "time": "Mon Oct 08 16:28:54 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 09 16:22:18 2012 +0900" }, "message": "mm: kill vma flag VM_EXECUTABLE and mm-\u003enum_exe_file_vmas\n\nCurrently the kernel sets mm-\u003eexe_file during sys_execve() and then tracks\nnumber of vmas with VM_EXECUTABLE flag in mm-\u003enum_exe_file_vmas, as soon\nas this counter drops to zero kernel resets mm-\u003eexe_file to NULL. Plus it\nresets mm-\u003eexe_file at last mmput() when mm-\u003emm_users drops to zero.\n\nVMA with VM_EXECUTABLE flag appears after mapping file with flag\nMAP_EXECUTABLE, such vmas can appears only at sys_execve() or after vma\nsplitting, because sys_mmap ignores this flag. Usually binfmt module sets\nmm-\u003eexe_file and mmaps executable vmas with this file, they hold\nmm-\u003eexe_file while task is running.\n\ncomment from v2.6.25-6245-g925d1c4 (\"procfs task exe symlink\"),\nwhere all this stuff was introduced:\n\n\u003e The kernel implements readlink of /proc/pid/exe by getting the file from\n\u003e the first executable VMA. Then the path to the file is reconstructed and\n\u003e reported as the result.\n\u003e\n\u003e Because of the VMA walk the code is slightly different on nommu systems.\n\u003e This patch avoids separate /proc/pid/exe code on nommu systems. Instead of\n\u003e walking the VMAs to find the first executable file-backed VMA we store a\n\u003e reference to the exec\u0027d file in the mm_struct.\n\u003e\n\u003e That reference would prevent the filesystem holding the executable file\n\u003e from being unmounted even after unmapping the VMAs. So we track the number\n\u003e of VM_EXECUTABLE VMAs and drop the new reference when the last one is\n\u003e unmapped. This avoids pinning the mounted filesystem.\n\nexe_file\u0027s vma accounting is hooked into every file mmap/unmmap and vma\nsplit/merge just to fix some hypothetical pinning fs from umounting by mm,\nwhich already unmapped all its executable files, but still alive.\n\nSeems like currently nobody depends on this behaviour. We can try to\nremove this logic and keep mm-\u003eexe_file until final mmput().\n\nmm-\u003eexe_file is still protected with mm-\u003emmap_sem, because we want to\nchange it via new sys_prctl(PR_SET_MM_EXE_FILE). Also via this syscall\ntask can change its mm-\u003eexe_file and unpin mountpoint explicitly.\n\nSigned-off-by: Konstantin Khlebnikov \u003ckhlebnikov@openvz.org\u003e\nCc: Alexander Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Carsten Otte \u003ccotte@de.ibm.com\u003e\nCc: Chris Metcalf \u003ccmetcalf@tilera.com\u003e\nCc: Cyrill Gorcunov \u003cgorcunov@openvz.org\u003e\nCc: Eric Paris \u003ceparis@redhat.com\u003e\nCc: H. Peter Anvin \u003chpa@zytor.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: James Morris \u003cjames.l.morris@oracle.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Kentaro Takeda \u003ctakedakn@nttdata.co.jp\u003e\nCc: Matt Helsley \u003cmatthltc@us.ibm.com\u003e\nCc: Nick Piggin \u003cnpiggin@kernel.dk\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Robert Richter \u003crobert.richter@amd.com\u003e\nCc: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nCc: Tetsuo Handa \u003cpenguin-kernel@I-love.SAKURA.ne.jp\u003e\nCc: Venkatesh Pallipadi \u003cvenki@google.com\u003e\nAcked-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "2dd8ad81e31d0d36a5d448329c646ab43eb17788", "tree": "cd358be45ed8067673edac7f1db6b6a42a96d9db", "parents": [ "0b173bc4daa8f8ec03a85abf5e47b23502ff80af" ], "author": { "name": "Konstantin Khlebnikov", "email": "khlebnikov@openvz.org", "time": "Mon Oct 08 16:28:51 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 09 16:22:18 2012 +0900" }, "message": "mm: use mm-\u003eexe_file instead of first VM_EXECUTABLE vma-\u003evm_file\n\nSome security modules and oprofile still uses VM_EXECUTABLE for retrieving\na task\u0027s executable file. After this patch they will use mm-\u003eexe_file\ndirectly. mm-\u003eexe_file is protected with mm-\u003emmap_sem, so locking stays\nthe same.\n\nSigned-off-by: Konstantin Khlebnikov \u003ckhlebnikov@openvz.org\u003e\nAcked-by: Chris Metcalf \u003ccmetcalf@tilera.com\u003e\t\t\t[arch/tile]\nAcked-by: Tetsuo Handa \u003cpenguin-kernel@I-love.SAKURA.ne.jp\u003e\t[tomoyo]\nCc: Alexander Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Carsten Otte \u003ccotte@de.ibm.com\u003e\nCc: Cyrill Gorcunov \u003cgorcunov@openvz.org\u003e\nCc: Eric Paris \u003ceparis@redhat.com\u003e\nCc: H. Peter Anvin \u003chpa@zytor.com\u003e\nCc: Hugh Dickins \u003chughd@google.com\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nAcked-by: James Morris \u003cjames.l.morris@oracle.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Kentaro Takeda \u003ctakedakn@nttdata.co.jp\u003e\nCc: Matt Helsley \u003cmatthltc@us.ibm.com\u003e\nCc: Nick Piggin \u003cnpiggin@kernel.dk\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Robert Richter \u003crobert.richter@amd.com\u003e\nCc: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nCc: Venkatesh Pallipadi \u003cvenki@google.com\u003e\nAcked-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "075663d19885eb3738fd2d7dbdb8947e12563b68", "tree": "99454962711f19b24b5b4642b6a95a6551731228", "parents": [ "7ac57a89de958fbb5271dc504d0c25e34dbeec32" ], "author": { "name": "Srivatsa S. Bhat", "email": "srivatsa.bhat@linux.vnet.ibm.com", "time": "Mon Oct 08 16:28:20 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 09 16:22:15 2012 +0900" }, "message": "CPU hotplug, debug: detect imbalance between get_online_cpus() and put_online_cpus()\n\nThe synchronization between CPU hotplug readers and writers is achieved\nby means of refcounting, safeguarded by the cpu_hotplug.lock.\n\nget_online_cpus() increments the refcount, whereas put_online_cpus()\ndecrements it. If we ever hit an imbalance between the two, we end up\ncompromising the guarantees of the hotplug synchronization i.e, for\nexample, an extra call to put_online_cpus() can end up allowing a\nhotplug reader to execute concurrently with a hotplug writer.\n\nSo, add a WARN_ON() in put_online_cpus() to detect such cases where the\nrefcount can go negative, and also attempt to fix it up, so that we can\ncontinue to run.\n\nSigned-off-by: Srivatsa S. Bhat \u003csrivatsa.bhat@linux.vnet.ibm.com\u003e\nReviewed-by: Yasuaki Ishimatsu \u003cisimatu.yasuaki@jp.fujitsu.com\u003e\nCc: Jiri Kosina \u003cjkosina@suse.cz\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Ingo Molnar \u003cmingo@kernel.org\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7ac57a89de958fbb5271dc504d0c25e34dbeec32", "tree": "4243b7e9f702e9b48820b62d8572f9aeb6f1cf1c", "parents": [ "9b2a60c484715e2d2f07d8192fd9f18435cbc77c" ], "author": { "name": "Catalin Marinas", "email": "catalin.marinas@arm.com", "time": "Mon Oct 08 16:28:16 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 09 16:22:14 2012 +0900" }, "message": "Kconfig: clean up the \"#if defined(arch)\" list for exception-trace sysctl entry\n\nIntroduce SYSCTL_EXCEPTION_TRACE config option and selec it in the\narchitectures requiring support for the \"exception-trace\" debug_table\nentry in kernel/sysctl.c.\n\nSigned-off-by: Catalin Marinas \u003ccatalin.marinas@arm.com\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: Chris Metcalf \u003ccmetcalf@tilera.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: \"H. Peter Anvin\" \u003chpa@zytor.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "dc92b1f9ab1e1665dbbc56911782358e7f9a49f9", "tree": "965ccb4a0f2c24a8b24adce415f6506246d07a90", "parents": [ "5e090ed7af10729a396a25df43d69a236e789736", "ca16f580a5db7e60bfafe59a50bb133bd3347491" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Oct 07 21:04:56 2012 +0900" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Oct 07 21:04:56 2012 +0900" }, "message": "Merge branch \u0027virtio-next\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux\n\nPull virtio changes from Rusty Russell:\n \"New workflow: same git trees pulled by linux-next get sent straight to\n Linus. Git is awkward at shuffling patches compared with quilt or mq,\n but that doesn\u0027t happen often once things get into my -next branch.\"\n\n* \u0027virtio-next\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: (24 commits)\n lguest: fix occasional crash in example launcher.\n virtio-blk: Disable callback in virtblk_done()\n virtio_mmio: Don\u0027t attempt to create empty virtqueues\n virtio_mmio: fix off by one error allocating queue\n drivers/virtio/virtio_pci.c: fix error return code\n virtio: don\u0027t crash when device is buggy\n virtio: remove CONFIG_VIRTIO_RING\n virtio: add help to CONFIG_VIRTIO option.\n virtio: support reserved vqs\n virtio: introduce an API to set affinity for a virtqueue\n virtio-ring: move queue_index to vring_virtqueue\n virtio_balloon: not EXPERIMENTAL any more.\n virtio-balloon: dependency fix\n virtio-blk: fix NULL checking in virtblk_alloc_req()\n virtio-blk: Add REQ_FLUSH and REQ_FUA support to bio path\n virtio-blk: Add bio-based IO path for virtio-blk\n virtio: console: fix error handling in init() function\n tools: Fix pthread flag for Makefile of trace-agent used by virtio-trace\n tools: Add guest trace agent as a user tool\n virtio/console: Allocate scatterlist according to the current pipe size\n ...\n" }, { "commit": "7f60ba388f5b9dd8b0da463b394412dace3ab814", "tree": "b97b4fb5c8ad07a435e5b1b559988364764d5e8d", "parents": [ "e665faa424a4a782aa986274920c1fc5b76f5560", "80c9d03c22f13a17df67b4b99a83ed5e9acf6093" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Oct 07 17:30:50 2012 +0900" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Oct 07 17:30:50 2012 +0900" }, "message": "Merge tag \u0027for-v3.7\u0027 of git://git.infradead.org/users/cbou/linux-pstore\n\nPull pstore changes from Anton Vorontsov:\n\n 1) We no longer ad-hoc to the function tracer \"high level\"\n infrastructure and no longer use its debugfs knobs. The change\n slightly touches kernel/trace directory, but it got the needed ack\n from Steven Rostedt:\n\n http://lkml.org/lkml/2012/8/21/688\n\n 2) Added maintainers entry;\n\n 3) A bunch of fixes, nothing special.\n\n* tag \u0027for-v3.7\u0027 of git://git.infradead.org/users/cbou/linux-pstore:\n pstore: Avoid recursive spinlocks in the oops_in_progress case\n pstore/ftrace: Convert to its own enable/disable debugfs knob\n pstore/ram: Add missing platform_device_unregister\n MAINTAINERS: Add pstore maintainers\n pstore/ram: Mark ramoops_pstore_write_buf() as notrace\n pstore/ram: Fix printk format warning\n pstore/ram: Fix possible NULL dereference\n" }, { "commit": "4965f5667f36a95b41cda6638875bc992bd7d18b", "tree": "554062719fbe5754197e1042024cceab1db4ddae", "parents": [ "c99b6841d74a5c7d3698cc2a3ec44241fe64b769" ], "author": { "name": "T Makphaibulchoke", "email": "tmac@hp.com", "time": "Thu Oct 04 17:16:55 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Oct 06 03:05:31 2012 +0900" }, "message": "kernel/resource.c: fix stack overflow in __reserve_region_with_split()\n\nUsing a recursive call add a non-conflicting region in\n__reserve_region_with_split() could result in a stack overflow in the case\nthat the recursive calls are too deep. Convert the recursive calls to an\niterative loop to avoid the problem.\n\nTested on a machine containing 135 regions. The kernel no longer panicked\nwith stack overflow.\n\nAlso tested with code arbitrarily adding regions with no conflict,\nembedding two consecutive conflicts and embedding two non-consecutive\nconflicts.\n\nSigned-off-by: T Makphaibulchoke \u003ctmac@hp.com\u003e\nReviewed-by: Ram Pai \u003clinuxram@us.ibm.com\u003e\nCc: Paul Gortmaker \u003cpaul.gortmaker@gmail.com\u003e\nCc: Wei Yang \u003cweiyang@linux.vnet.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0324b5a450f8a58304e93c5d886add24ca3527bc", "tree": "f3e77339d9964f550485e9d9b40897ba1b95b33f", "parents": [ "322c9ec009fdc2bc9ccb8f55afab3f7ab8ac71ab" ], "author": { "name": "Jesper Juhl", "email": "jj@chaosbits.net", "time": "Thu Oct 04 17:16:52 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Oct 06 03:05:31 2012 +0900" }, "message": "taskstats: cgroupstats_user_cmd() may leak on error\n\nIf prepare_reply() succeeds we have allocated memory for \u0027rep_skb\u0027. If\nnla_reserve() then subsequently fails and returns NULL we fail to release\nthe memory we allocated, thus causing a leak.\n\nSigned-off-by: Jesper Juhl \u003cjj@chaosbits.net\u003e\nCc: Balbir Singh \u003cbsingharora@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "de4ec99c32cca755a11f91abb86ed94ce11f2e60", "tree": "ae52a68ef9cd843dfaa6772b0d5117be26c1650d", "parents": [ "9fb88442105f5fce96ea343927500d6307c8c550" ], "author": { "name": "Wei Yongjun", "email": "yongjun_wei@trendmicro.com.cn", "time": "Thu Oct 04 17:15:47 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Oct 06 03:05:19 2012 +0900" }, "message": "kdump: remove unneeded include\n\nThe inclusion of \u003cgenerated/utsrelease.h\u003e is unnecessary.\n\nSigned-off-by: Wei Yongjun \u003cyongjun_wei@trendmicro.com.cn\u003e\nReviewed-by: Simon Horman \u003chorms@verge.net.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5ab1c309b344880d81494e9eab7fb27682bc6d9d", "tree": "9509df6703c921d268db3b4b52c29992bcc24e35", "parents": [ "0f4cfb2e4e7a7e4e97a3e90e2ba1062f07fb2cb1" ], "author": { "name": "Denys Vlasenko", "email": "vda.linux@googlemail.com", "time": "Thu Oct 04 17:15:29 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Oct 06 03:05:16 2012 +0900" }, "message": "coredump: pass siginfo_t* to do_coredump() and below, not merely signr\n\nThis is a preparatory patch for the introduction of NT_SIGINFO elf note.\n\nWith this patch we pass \"siginfo_t *siginfo\" instead of \"int signr\" to\ndo_coredump() and put it into coredump_params. It will be used by the\nnext patch. Most changes are simple s/signr/siginfo-\u003esi_signo/.\n\nSigned-off-by: Denys Vlasenko \u003cvda.linux@googlemail.com\u003e\nReviewed-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Amerigo Wang \u003camwang@redhat.com\u003e\nCc: \"Jonathan M. Foote\" \u003cjmfoote@cert.org\u003e\nCc: Roland McGrath \u003croland@hack.frob.com\u003e\nCc: Pedro Alves \u003cpalves@redhat.com\u003e\nCc: Fengguang Wu \u003cfengguang.wu@intel.com\u003e\nCc: Stephen Rothwell \u003csfr@canb.auug.org.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "179899fd5dc780fe3bcd44d0eb7823e3d855c855", "tree": "a2e7bf0098162e1fa940cad56bb1e99ec10440ca", "parents": [ "046d662f481830e652ac34cd112249adde16452a" ], "author": { "name": "Alex Kelly", "email": "alex.page.kelly@gmail.com", "time": "Thu Oct 04 17:15:24 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Oct 06 03:05:15 2012 +0900" }, "message": "coredump: update coredump-related headers\n\nCreate a new header file, fs/coredump.h, which contains functions only\nused by the new coredump.c. It also moves do_coredump to the\ninclude/linux/coredump.h header file, for consistency.\n\nSigned-off-by: Alex Kelly \u003calex.page.kelly@gmail.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\nAcked-by: Serge Hallyn \u003cserge.hallyn@canonical.com\u003e\nAcked-by: Kees Cook \u003ckeescook@chromium.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "046d662f481830e652ac34cd112249adde16452a", "tree": "ad13e968b4b02f9e2c35ce45f358477474df80d7", "parents": [ "db9aeca97a58563e1ab927d157c9b5048f233e73" ], "author": { "name": "Alex Kelly", "email": "alex.page.kelly@gmail.com", "time": "Thu Oct 04 17:15:23 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Oct 06 03:05:15 2012 +0900" }, "message": "coredump: make core dump functionality optional\n\nAdds an expert Kconfig option, CONFIG_COREDUMP, which allows disabling of\ncore dump. This saves approximately 2.6k in the compiled kernel, and\ncomplements CONFIG_ELF_CORE, which now depends on it.\n\nCONFIG_COREDUMP also disables coredump-related sysctls, except for\nsuid_dumpable and related functions, which are necessary for ptrace.\n\n[akpm@linux-foundation.org: fix binfmt_aout.c build]\nSigned-off-by: Alex Kelly \u003calex.page.kelly@gmail.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\nAcked-by: Serge Hallyn \u003cserge.hallyn@canonical.com\u003e\nAcked-by: Kees Cook \u003ckeescook@chromium.org\u003e\nCc: Randy Dunlap \u003crdunlap@xenotime.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6c0c0d4d1080840eabb3d055d2fd81911111c5fd", "tree": "16d86fae708a4ef2a5ed3180391ba0f45b081cda", "parents": [ "f96972f2dc6365421cf2366ebd61ee4cf060c8d5" ], "author": { "name": "hongfeng", "email": "hongfeng@marvell.com", "time": "Thu Oct 04 17:12:25 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Oct 06 03:04:48 2012 +0900" }, "message": "poweroff: fix bug in orderly_poweroff()\n\norderly_poweroff is trying to poweroff platform in two steps:\n\nstep 1: Call user space application to poweroff\nstep 2: If user space poweroff fail, then do a force power off if force param\n is set.\n\nThe bug here is, step 1 is always successful with param UMH_NO_WAIT, which obey\nthe design goal of orderly_poweroff.\n\nWe have two choices here:\nUMH_WAIT_EXEC which means wait for the exec, but not the process;\nUMH_WAIT_PROC which means wait for the process to complete.\nwe need to trade off the two choices:\n\nIf using UMH_WAIT_EXEC, there is potential issue comments by Serge E.\nHallyn: The exec will have started, but may for whatever (very unlikely)\nreason fail.\n\nIf using UMH_WAIT_PROC, there is potential issue comments by Eric W.\nBiederman: If the caller is not running in a kernel thread then we can\neasily get into a case where the user space caller will block waiting for\nus when we are waiting for the user space caller.\n\nThanks for their excellent ideas, based on the above discussion, we\nfinally choose UMH_WAIT_EXEC, which is much more safe, if the user\napplication really fails, we just complain the application itself, it\nseems a better choice here.\n\nSigned-off-by: Feng Hong \u003chongfeng@marvell.com\u003e\nAcked-by: Kees Cook \u003ckeescook@chromium.org\u003e\nAcked-by: Serge Hallyn \u003cserge.hallyn@canonical.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nAcked-by: \"Rafael J. Wysocki\" \u003crjw@sisk.pl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f96972f2dc6365421cf2366ebd61ee4cf060c8d5", "tree": "8a8aa56a74371a8b39f55184631ea34030a147a4", "parents": [ "9f6547a3209b78689ab8183630df87ca5e13fec0" ], "author": { "name": "Shawn Guo", "email": "shawn.guo@linaro.org", "time": "Thu Oct 04 17:12:23 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Oct 06 03:04:47 2012 +0900" }, "message": "kernel/sys.c: call disable_nonboot_cpus() in kernel_restart()\n\nAs kernel_power_off() calls disable_nonboot_cpus(), we may also want to\nhave kernel_restart() call disable_nonboot_cpus(). Doing so can help\nmachines that require boot cpu be the last alive cpu during reboot to\nsurvive with kernel restart.\n\nThis fixes one reboot issue seen on imx6q (Cortex-A9 Quad). The machine\nrequires that the restart routine be run on the primary cpu rather than\nsecondary ones. Otherwise, the secondary core running the restart\nroutine will fail to come to online after reboot.\n\nSigned-off-by: Shawn Guo \u003cshawn.guo@linaro.org\u003e\nCc: \u003cstable@vger.kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ecefbd94b834fa32559d854646d777c56749ef1c", "tree": "ca8958900ad9e208a8e5fb7704f1b66dc76131b4", "parents": [ "ce57e981f2b996aaca2031003b3f866368307766", "3d11df7abbff013b811d5615320580cd5d9d7d31" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 04 09:30:33 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 04 09:30:33 2012 -0700" }, "message": "Merge tag \u0027kvm-3.7-1\u0027 of git://git.kernel.org/pub/scm/virt/kvm/kvm\n\nPull KVM updates from Avi Kivity:\n \"Highlights of the changes for this release include support for vfio\n level triggered interrupts, improved big real mode support on older\n Intels, a streamlines guest page table walker, guest APIC speedups,\n PIO optimizations, better overcommit handling, and read-only memory.\"\n\n* tag \u0027kvm-3.7-1\u0027 of git://git.kernel.org/pub/scm/virt/kvm/kvm: (138 commits)\n KVM: s390: Fix vcpu_load handling in interrupt code\n KVM: x86: Fix guest debug across vcpu INIT reset\n KVM: Add resampling irqfds for level triggered interrupts\n KVM: optimize apic interrupt delivery\n KVM: MMU: Eliminate pointless temporary \u0027ac\u0027\n KVM: MMU: Avoid access/dirty update loop if all is well\n KVM: MMU: Eliminate eperm temporary\n KVM: MMU: Optimize is_last_gpte()\n KVM: MMU: Simplify walk_addr_generic() loop\n KVM: MMU: Optimize pte permission checks\n KVM: MMU: Update accessed and dirty bits after guest pagetable walk\n KVM: MMU: Move gpte_access() out of paging_tmpl.h\n KVM: MMU: Optimize gpte_access() slightly\n KVM: MMU: Push clean gpte write protection out of gpte_access()\n KVM: clarify kvmclock documentation\n KVM: make processes waiting on vcpu mutex killable\n KVM: SVM: Make use of asm.h\n KVM: VMX: Make use of asm.h\n KVM: VMX: Make lto-friendly\n KVM: x86: lapic: Clean up find_highest_vector() and count_vectors()\n ...\n\nConflicts:\n\tarch/s390/include/asm/processor.h\n\tarch/x86/kvm/i8259.c\n" }, { "commit": "88265322c14cce39f7afbc416726ef4fac413298", "tree": "e4956f905ef617971f87788d8f8a09dbb66b70a3", "parents": [ "65b99c74fdd325d1ffa2e5663295888704712604", "bf5308344527d015ac9a6d2bda4ad4d40fd7d943" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 02 21:38:48 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 02 21:38:48 2012 -0700" }, "message": "Merge branch \u0027next\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security\n\nPull security subsystem updates from James Morris:\n \"Highlights:\n\n - Integrity: add local fs integrity verification to detect offline\n attacks\n - Integrity: add digital signature verification\n - Simple stacking of Yama with other LSMs (per LSS discussions)\n - IBM vTPM support on ppc64\n - Add new driver for Infineon I2C TIS TPM\n - Smack: add rule revocation for subject labels\"\n\nFixed conflicts with the user namespace support in kernel/auditsc.c and\nsecurity/integrity/ima/ima_policy.c.\n\n* \u0027next\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (39 commits)\n Documentation: Update git repository URL for Smack userland tools\n ima: change flags container data type\n Smack: setprocattr memory leak fix\n Smack: implement revoking all rules for a subject label\n Smack: remove task_wait() hook.\n ima: audit log hashes\n ima: generic IMA action flag handling\n ima: rename ima_must_appraise_or_measure\n audit: export audit_log_task_info\n tpm: fix tpm_acpi sparse warning on different address spaces\n samples/seccomp: fix 31 bit build on s390\n ima: digital signature verification support\n ima: add support for different security.ima data types\n ima: add ima_inode_setxattr/removexattr function and calls\n ima: add inode_post_setattr call\n ima: replace iint spinblock with rwlock/read_lock\n ima: allocating iint improvements\n ima: add appraise action keywords and default rules\n ima: integrity appraisal extension\n vfs: move ima_file_free before releasing the file\n ...\n" }, { "commit": "aab174f0df5d72d31caccf281af5f614fa254578", "tree": "2a172c5009c4ac8755e858593154c258ce7709a0", "parents": [ "ca41cc96b2813221b05af57d0355157924de5a07", "2bd2c1941f141ad780135ccc1cd08ca71a24f10a" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 02 20:25:04 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 02 20:25:04 2012 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs\n\nPull vfs update from Al Viro:\n\n - big one - consolidation of descriptor-related logics; almost all of\n that is moved to fs/file.c\n\n (BTW, I\u0027m seriously tempted to rename the result to fd.c. As it is,\n we have a situation when file_table.c is about handling of struct\n file and file.c is about handling of descriptor tables; the reasons\n are historical - file_table.c used to be about a static array of\n struct file we used to have way back).\n\n A lot of stray ends got cleaned up and converted to saner primitives,\n disgusting mess in android/binder.c is still disgusting, but at least\n doesn\u0027t poke so much in descriptor table guts anymore. A bunch of\n relatively minor races got fixed in process, plus an ext4 struct file\n leak.\n\n - related thing - fget_light() partially unuglified; see fdget() in\n there (and yes, it generates the code as good as we used to have).\n\n - also related - bits of Cyrill\u0027s procfs stuff that got entangled into\n that work; _not_ all of it, just the initial move to fs/proc/fd.c and\n switch of fdinfo to seq_file.\n\n - Alex\u0027s fs/coredump.c spiltoff - the same story, had been easier to\n take that commit than mess with conflicts. The rest is a separate\n pile, this was just a mechanical code movement.\n\n - a few misc patches all over the place. Not all for this cycle,\n there\u0027ll be more (and quite a few currently sit in akpm\u0027s tree).\"\n\nFix up trivial conflicts in the android binder driver, and some fairly\nsimple conflicts due to two different changes to the sock_alloc_file()\ninterface (\"take descriptor handling from sock_alloc_file() to callers\"\nvs \"net: Providing protocol type via system.sockprotoname xattr of\n/proc/PID/fd entries\" adding a dentry name to the socket)\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (72 commits)\n MAX_LFS_FILESIZE should be a loff_t\n compat: fs: Generic compat_sys_sendfile implementation\n fs: push rcu_barrier() from deactivate_locked_super() to filesystems\n btrfs: reada_extent doesn\u0027t need kref for refcount\n coredump: move core dump functionality into its own file\n coredump: prevent double-free on an error path in core dumper\n usb/gadget: fix misannotations\n fcntl: fix misannotations\n ceph: don\u0027t abuse d_delete() on failure exits\n hypfs: -\u003ed_parent is never NULL or negative\n vfs: delete surplus inode NULL check\n switch simple cases of fget_light to fdget\n new helpers: fdget()/fdput()\n switch o2hb_region_dev_write() to fget_light()\n proc_map_files_readdir(): don\u0027t bother with grabbing files\n make get_file() return its argument\n vhost_set_vring(): turn pollstart/pollstop into bool\n switch prctl_set_mm_exe_file() to fget_light()\n switch xfs_find_handle() to fget_light()\n switch xfs_swapext() to fget_light()\n ...\n" }, { "commit": "16642a2e7be23bbda013fc32d8f6c68982eab603", "tree": "346ae485f485f6901e5d8150f0d34d178a7dd448", "parents": [ "51562cba98939da0a1d10fe7c25359b77a069033", "b9142167a2bb979b58b98ffcd928a311b55cbd9f" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 02 18:32:35 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 02 18:32:35 2012 -0700" }, "message": "Merge tag \u0027pm-for-3.7-rc1\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm\n\nPull power management updates from Rafael J Wysocki:\n\n - Improved system suspend/resume and runtime PM handling for the SH\n TMU, CMT and MTU2 clock event devices (also used by ARM/shmobile).\n\n - Generic PM domains framework extensions related to cpuidle support\n and domain objects lookup using names.\n\n - ARM/shmobile power management updates including improved support for\n the SH7372\u0027s A4S power domain containing the CPU core.\n\n - cpufreq changes related to AMD CPUs support from Matthew Garrett,\n Andre Przywara and Borislav Petkov.\n\n - cpu0 cpufreq driver from Shawn Guo.\n\n - cpufreq governor fixes related to the relaxing of limit from Michal\n Pecio.\n\n - OMAP cpufreq updates from Axel Lin and Richard Zhao.\n\n - cpuidle ladder governor fixes related to the disabling of states from\n Carsten Emde and me.\n\n - Runtime PM core updates related to the interactions with the system\n suspend core from Alan Stern and Kevin Hilman.\n\n - Wakeup sources modification allowing more helper functions to be\n called from interrupt context from John Stultz and additional\n diagnostic code from Todd Poynor.\n\n - System suspend error code path fix from Feng Hong.\n\nFixed up conflicts in cpufreq/powernow-k8 that stemmed from the\nworkqueue fixes conflicting fairly badly with the removal of support for\nhardware P-state chips. The changes were independent but somewhat\nintertwined.\n\n* tag \u0027pm-for-3.7-rc1\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (76 commits)\n Revert \"PM QoS: Use spinlock in the per-device PM QoS constraints code\"\n PM / Runtime: let rpm_resume() succeed if RPM_ACTIVE, even when disabled, v2\n cpuidle: rename function name \"__cpuidle_register_driver\", v2\n cpufreq: OMAP: Check IS_ERR() instead of NULL for omap_device_get_by_hwmod_name\n cpuidle: remove some empty lines\n PM: Prevent runtime suspend during system resume\n PM QoS: Use spinlock in the per-device PM QoS constraints code\n PM / Sleep: use resume event when call dpm_resume_early\n cpuidle / ACPI : move cpuidle_device field out of the acpi_processor_power structure\n ACPI / processor: remove pointless variable initialization\n ACPI / processor: remove unused function parameter\n cpufreq: OMAP: remove loops_per_jiffy recalculate for smp\n sections: fix section conflicts in drivers/cpufreq\n cpufreq: conservative: update frequency when limits are relaxed\n cpufreq / ondemand: update frequency when limits are relaxed\n properly __init-annotate pm_sysrq_init()\n cpufreq: Add a generic cpufreq-cpu0 driver\n PM / OPP: Initialize OPP table from device tree\n ARM: add cpufreq transiton notifier to adjust loops_per_jiffy for smp\n cpufreq: Remove support for hardware P-state chips from powernow-k8\n ...\n" }, { "commit": "aecdc33e111b2c447b622e287c6003726daa1426", "tree": "3e7657eae4b785e1a1fb5dfb225dbae0b2f0cfc6", "parents": [ "a20acf99f75e49271381d65db097c9763060a1e8", "a3a6cab5ea10cca64d036851fe0d932448f2fe4f" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 02 13:38:27 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 02 13:38:27 2012 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next\n\nPull networking changes from David Miller:\n\n 1) GRE now works over ipv6, from Dmitry Kozlov.\n\n 2) Make SCTP more network namespace aware, from Eric Biederman.\n\n 3) TEAM driver now works with non-ethernet devices, from Jiri Pirko.\n\n 4) Make openvswitch network namespace aware, from Pravin B Shelar.\n\n 5) IPV6 NAT implementation, from Patrick McHardy.\n\n 6) Server side support for TCP Fast Open, from Jerry Chu and others.\n\n 7) Packet BPF filter supports MOD and XOR, from Eric Dumazet and Daniel\n Borkmann.\n\n 8) Increate the loopback default MTU to 64K, from Eric Dumazet.\n\n 9) Use a per-task rather than per-socket page fragment allocator for\n outgoing networking traffic. This benefits processes that have very\n many mostly idle sockets, which is quite common.\n\n From Eric Dumazet.\n\n10) Use up to 32K for page fragment allocations, with fallbacks to\n smaller sizes when higher order page allocations fail. Benefits are\n a) less segments for driver to process b) less calls to page\n allocator c) less waste of space.\n\n From Eric Dumazet.\n\n11) Allow GRO to be used on GRE tunnels, from Eric Dumazet.\n\n12) VXLAN device driver, one way to handle VLAN issues such as the\n limitation of 4096 VLAN IDs yet still have some level of isolation.\n From Stephen Hemminger.\n\n13) As usual there is a large boatload of driver changes, with the scale\n perhaps tilted towards the wireless side this time around.\n\nFix up various fairly trivial conflicts, mostly caused by the user\nnamespace changes.\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1012 commits)\n hyperv: Add buffer for extended info after the RNDIS response message.\n hyperv: Report actual status in receive completion packet\n hyperv: Remove extra allocated space for recv_pkt_list elements\n hyperv: Fix page buffer handling in rndis_filter_send_request()\n hyperv: Fix the missing return value in rndis_filter_set_packet_filter()\n hyperv: Fix the max_xfer_size in RNDIS initialization\n vxlan: put UDP socket in correct namespace\n vxlan: Depend on CONFIG_INET\n sfc: Fix the reported priorities of different filter types\n sfc: Remove EFX_FILTER_FLAG_RX_OVERRIDE_IP\n sfc: Fix loopback self-test with separate_tx_channels\u003d1\n sfc: Fix MCDI structure field lookup\n sfc: Add parentheses around use of bitfield macro arguments\n sfc: Fix null function pointer in efx_sriov_channel_type\n vxlan: virtual extensible lan\n igmp: export symbol ip_mc_leave_group\n netlink: add attributes to fdb interface\n tg3: unconditionally select HWMON support when tg3 is enabled.\n Revert \"net: ti cpsw ethernet: allow reading phy interface mode from DT\"\n gre: fix sparse warning\n ...\n" }, { "commit": "437589a74b6a590d175f86cf9f7b2efcee7765e7", "tree": "37bf8635b1356d80ef002b00e84f3faf3d555a63", "parents": [ "68d47a137c3bef754923bccf73fb639c9b0bbd5e", "72235465864d84cedb2d9f26f8e1de824ee20339" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 02 11:11:09 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 02 11:11:09 2012 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace\n\nPull user namespace changes from Eric Biederman:\n \"This is a mostly modest set of changes to enable basic user namespace\n support. This allows the code to code to compile with user namespaces\n enabled and removes the assumption there is only the initial user\n namespace. Everything is converted except for the most complex of the\n filesystems: autofs4, 9p, afs, ceph, cifs, coda, fuse, gfs2, ncpfs,\n nfs, ocfs2 and xfs as those patches need a bit more review.\n\n The strategy is to push kuid_t and kgid_t values are far down into\n subsystems and filesystems as reasonable. Leaving the make_kuid and\n from_kuid operations to happen at the edge of userspace, as the values\n come off the disk, and as the values come in from the network.\n Letting compile type incompatible compile errors (present when user\n namespaces are enabled) guide me to find the issues.\n\n The most tricky areas have been the places where we had an implicit\n union of uid and gid values and were storing them in an unsigned int.\n Those places were converted into explicit unions. I made certain to\n handle those places with simple trivial patches.\n\n Out of that work I discovered we have generic interfaces for storing\n quota by projid. I had never heard of the project identifiers before.\n Adding full user namespace support for project identifiers accounts\n for most of the code size growth in my git tree.\n\n Ultimately there will be work to relax privlige checks from\n \"capable(FOO)\" to \"ns_capable(user_ns, FOO)\" where it is safe allowing\n root in a user names to do those things that today we only forbid to\n non-root users because it will confuse suid root applications.\n\n While I was pushing kuid_t and kgid_t changes deep into the audit code\n I made a few other cleanups. I capitalized on the fact we process\n netlink messages in the context of the message sender. I removed\n usage of NETLINK_CRED, and started directly using current-\u003etty.\n\n Some of these patches have also made it into maintainer trees, with no\n problems from identical code from different trees showing up in\n linux-next.\n\n After reading through all of this code I feel like I might be able to\n win a game of kernel trivial pursuit.\"\n\nFix up some fairly trivial conflicts in netfilter uid/git logging code.\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: (107 commits)\n userns: Convert the ufs filesystem to use kuid/kgid where appropriate\n userns: Convert the udf filesystem to use kuid/kgid where appropriate\n userns: Convert ubifs to use kuid/kgid\n userns: Convert squashfs to use kuid/kgid where appropriate\n userns: Convert reiserfs to use kuid and kgid where appropriate\n userns: Convert jfs to use kuid/kgid where appropriate\n userns: Convert jffs2 to use kuid and kgid where appropriate\n userns: Convert hpfs to use kuid and kgid where appropriate\n userns: Convert btrfs to use kuid/kgid where appropriate\n userns: Convert bfs to use kuid/kgid where appropriate\n userns: Convert affs to use kuid/kgid wherwe appropriate\n userns: On alpha modify linux_to_osf_stat to use convert from kuids and kgids\n userns: On ia64 deal with current_uid and current_gid being kuid and kgid\n userns: On ppc convert current_uid from a kuid before printing.\n userns: Convert s390 getting uid and gid system calls to use kuid and kgid\n userns: Convert s390 hypfs to use kuid and kgid where appropriate\n userns: Convert binder ipc to use kuids\n userns: Teach security_path_chown to take kuids and kgids\n userns: Add user namespace support to IMA\n userns: Convert EVM to deal with kuids and kgids in it\u0027s hmac computation\n ...\n" }, { "commit": "68d47a137c3bef754923bccf73fb639c9b0bbd5e", "tree": "e82a527bd978ee96283f03d0df36f47d9aee1e41", "parents": [ "c0e8a139a5bb8add02b4111e9e1957d810d7285e", "8c7f6edbda01f1b1a2e60ad61f14fe38023e433b" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 02 10:52:28 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 02 10:52:28 2012 -0700" }, "message": "Merge branch \u0027for-3.7-hierarchy\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup\n\nPull cgroup hierarchy update from Tejun Heo:\n \"Currently, different cgroup subsystems handle nested cgroups\n completely differently. There\u0027s no consistency among subsystems and\n the behaviors often are outright broken.\n\n People at least seem to agree that the broken hierarhcy behaviors need\n to be weeded out if any progress is gonna be made on this front and\n that the fallouts from deprecating the broken behaviors should be\n acceptable especially given that the current behaviors don\u0027t make much\n sense when nested.\n\n This patch makes cgroup emit warning messages if cgroups for\n subsystems with broken hierarchy behavior are nested to prepare for\n fixing them in the future. This was put in a separate branch because\n more related changes were expected (didn\u0027t make it this round) and the\n memory cgroup wanted to pull in this and make changes on top.\"\n\n* \u0027for-3.7-hierarchy\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:\n cgroup: mark subsystems with broken hierarchy support and whine if cgroups are nested for them\n" }, { "commit": "c0e8a139a5bb8add02b4111e9e1957d810d7285e", "tree": "f5f0695c7553c0f651ea3c714191dedf76e06c78", "parents": [ "033d9959ed2dc1029217d4165f80a71702dc578e", "a6f00298b2ceaf50b4ab00e6ee3eb0206ac72fac" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 02 10:50:47 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 02 10:50:47 2012 -0700" }, "message": "Merge branch \u0027for-3.7\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup\n\nPull cgroup updates from Tejun Heo:\n\n - xattr support added. The implementation is shared with tmpfs. The\n usage is restricted and intended to be used to manage per-cgroup\n metadata by system software. tmpfs changes are routed through this\n branch with Hugh\u0027s permission.\n\n - cgroup subsystem ID handling simplified.\n\n* \u0027for-3.7\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:\n cgroup: Define CGROUP_SUBSYS_COUNT according the configuration\n cgroup: Assign subsystem IDs during compile time\n cgroup: Do not depend on a given order when populating the subsys array\n cgroup: Wrap subsystem selection macro\n cgroup: Remove CGROUP_BUILTIN_SUBSYS_COUNT\n cgroup: net_prio: Do not define task_netpioidx() when not selected\n cgroup: net_cls: Do not define task_cls_classid() when not selected\n cgroup: net_cls: Move sock_update_classid() declaration to cls_cgroup.h\n cgroup: trivial fixes for Documentation/cgroups/cgroups.txt\n xattr: mark variable as uninitialized to make both gcc and smatch happy\n fs: add missing documentation to simple_xattr functions\n cgroup: add documentation on extended attributes usage\n cgroup: rename subsys_bits to subsys_mask\n cgroup: add xattr support\n cgroup: revise how we re-populate root directory\n xattr: extract simple_xattr code from tmpfs\n" }, { "commit": "033d9959ed2dc1029217d4165f80a71702dc578e", "tree": "3d306316e44bdabce2e0bf2ef7e466e525f90b4c", "parents": [ "974a847e00cf3ff1695e62b276892137893706ab", "7c6e72e46c9ea4a88f3f8ba96edce9db4bd48726" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 02 09:54:49 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 02 09:54:49 2012 -0700" }, "message": "Merge branch \u0027for-3.7\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq\n\nPull workqueue changes from Tejun Heo:\n \"This is workqueue updates for v3.7-rc1. A lot of activities this\n round including considerable API and behavior cleanups.\n\n * delayed_work combines a timer and a work item. The handling of the\n timer part has always been a bit clunky leading to confusing\n cancelation API with weird corner-case behaviors. delayed_work is\n updated to use new IRQ safe timer and cancelation now works as\n expected.\n\n * Another deficiency of delayed_work was lack of the counterpart of\n mod_timer() which led to cancel+queue combinations or open-coded\n timer+work usages. mod_delayed_work[_on]() are added.\n\n These two delayed_work changes make delayed_work provide interface\n and behave like timer which is executed with process context.\n\n * A work item could be executed concurrently on multiple CPUs, which\n is rather unintuitive and made flush_work() behavior confusing and\n half-broken under certain circumstances. This problem doesn\u0027t\n exist for non-reentrant workqueues. While non-reentrancy check\n isn\u0027t free, the overhead is incurred only when a work item bounces\n across different CPUs and even in simulated pathological scenario\n the overhead isn\u0027t too high.\n\n All workqueues are made non-reentrant. This removes the\n distinction between flush_[delayed_]work() and\n flush_[delayed_]_work_sync(). The former is now as strong as the\n latter and the specified work item is guaranteed to have finished\n execution of any previous queueing on return.\n\n * In addition to the various bug fixes, Lai redid and simplified CPU\n hotplug handling significantly.\n\n * Joonsoo introduced system_highpri_wq and used it during CPU\n hotplug.\n\n There are two merge commits - one to pull in IRQ safe timer from\n tip/timers/core and the other to pull in CPU hotplug fixes from\n wq/for-3.6-fixes as Lai\u0027s hotplug restructuring depended on them.\"\n\nFixed a number of trivial conflicts, but the more interesting conflicts\nwere silent ones where the deprecated interfaces had been used by new\ncode in the merge window, and thus didn\u0027t cause any real data conflicts.\n\nTejun pointed out a few of them, I fixed a couple more.\n\n* \u0027for-3.7\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: (46 commits)\n workqueue: remove spurious WARN_ON_ONCE(in_irq()) from try_to_grab_pending()\n workqueue: use cwq_set_max_active() helper for workqueue_set_max_active()\n workqueue: introduce cwq_set_max_active() helper for thaw_workqueues()\n workqueue: remove @delayed from cwq_dec_nr_in_flight()\n workqueue: fix possible stall on try_to_grab_pending() of a delayed work item\n workqueue: use hotcpu_notifier() for workqueue_cpu_down_callback()\n workqueue: use __cpuinit instead of __devinit for cpu callbacks\n workqueue: rename manager_mutex to assoc_mutex\n workqueue: WORKER_REBIND is no longer necessary for idle rebinding\n workqueue: WORKER_REBIND is no longer necessary for busy rebinding\n workqueue: reimplement idle worker rebinding\n workqueue: deprecate __cancel_delayed_work()\n workqueue: reimplement cancel_delayed_work() using try_to_grab_pending()\n workqueue: use mod_delayed_work() instead of __cancel + queue\n workqueue: use irqsafe timer for delayed_work\n workqueue: clean up delayed_work initializers and add missing one\n workqueue: make deferrable delayed_work initializer names consistent\n workqueue: cosmetic whitespace updates for macro definitions\n workqueue: deprecate system_nrt[_freezable]_wq\n workqueue: deprecate flush[_delayed]_work_sync()\n ...\n" }, { "commit": "3498d13b8090c0b0ef911409fbc503a7c4cca6ef", "tree": "254ca00276e863d9fba25707690c66b2a04c49e9", "parents": [ "def7cb8cd4e3258db88050eaaca5438bcc3dafca", "0c57dfcc6c1d037243c2f8fbf62eab3633326ec0" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 01 12:26:52 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 01 12:26:52 2012 -0700" }, "message": "Merge tag \u0027tty-3.6\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty\n\nPull TTY changes from Greg Kroah-Hartman:\n \"As we skipped the merge window for 3.6-rc1 for the tty tree,\n everything is now settled down and working properly, so we are ready\n for 3.7-rc1. Here\u0027s the patchset, it\u0027s big, but the large changes are\n removing a firmware file and adding a staging tty driver (it depended\n on the tty core changes, so it\u0027s going through this tree instead of\n the staging tree.)\n\n All of these patches have been in the linux-next tree for a while.\n\n Signed-off-by: Greg Kroah-Hartman \u003cgregkh@linuxfoundation.org\u003e\"\n\nFix up more-or-less trivial conflicts in\n - drivers/char/pcmcia/synclink_cs.c:\n tty NULL dereference fix vs tty_port_cts_enabled() helper function\n - drivers/staging/{Kconfig,Makefile}:\n add-add conflict (dgrp driver added close to other staging drivers)\n - drivers/staging/ipack/devices/ipoctal.c:\n \"split ipoctal_channel from iopctal\" vs \"TTY: use tty_port_register_device\"\n\n* tag \u0027tty-3.6\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (235 commits)\n tty/serial: Add kgdb_nmi driver\n tty/serial/amba-pl011: Quiesce interrupts in poll_get_char\n tty/serial/amba-pl011: Implement poll_init callback\n tty/serial/core: Introduce poll_init callback\n kdb: Turn KGDB_KDB\u003dn stubs into static inlines\n kdb: Implement disable_nmi command\n kernel/debug: Mask KGDB NMI upon entry\n serial: pl011: handle corruption at high clock speeds\n serial: sccnxp: Make \u0027default\u0027 choice in switch last\n serial: sccnxp: Remove mask termios caps for SW flow control\n serial: sccnxp: Report actual baudrate back to core\n serial: samsung: Add poll_get_char \u0026 poll_put_char\n Powerpc 8xx CPM_UART setting MAXIDL register proportionaly to baud rate\n Powerpc 8xx CPM_UART maxidl should not depend on fifo size\n Powerpc 8xx CPM_UART too many interrupts\n Powerpc 8xx CPM_UART desynchronisation\n serial: set correct baud_base for EXSYS EX-41092 Dual 16950\n serial: omap: fix the reciever line error case\n 8250: blacklist Winbond CIR port\n 8250_pnp: do pnp probe before legacy probe\n ...\n" }, { "commit": "81f56e5375e84689b891e0e6c5a02ec12a1f18d9", "tree": "a1e128a71ff24fc705428df86a858076cfe4bc13", "parents": [ "6c09931b3f987898f5c581d267ef269f5e2e9575", "27aa55c5e5123fa8b8ad0156559d34d7edff58ca" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 01 11:51:57 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 01 11:51:57 2012 -0700" }, "message": "Merge tag \u0027arm64-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64\n\nPull arm64 support from Catalin Marinas:\n \"Linux support for the 64-bit ARM architecture (AArch64)\n\n Features currently supported:\n - 39-bit address space for user and kernel (each)\n - 4KB and 64KB page configurations\n - Compat (32-bit) user applications (ARMv7, EABI only)\n - Flattened Device Tree (mandated for all AArch64 platforms)\n - ARM generic timers\"\n\n* tag \u0027arm64-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64: (35 commits)\n arm64: ptrace: remove obsolete ptrace request numbers from user headers\n arm64: Do not set the SMP/nAMP processor bit\n arm64: MAINTAINERS update\n arm64: Build infrastructure\n arm64: Miscellaneous header files\n arm64: Generic timers support\n arm64: Loadable modules\n arm64: Miscellaneous library functions\n arm64: Performance counters support\n arm64: Add support for /proc/sys/debug/exception-trace\n arm64: Debugging support\n arm64: Floating point and SIMD\n arm64: 32-bit (compat) applications support\n arm64: User access library functions\n arm64: Signal handling support\n arm64: VDSO support\n arm64: System calls handling\n arm64: ELF definitions\n arm64: SMP support\n arm64: DMA mapping API\n ...\n" }, { "commit": "da8347969f324db5f572581397d9b3a8e108cda4", "tree": "7df2ea8968ecb92e307bbffdbe8f9bcd0c79c36a", "parents": [ "80749df4a1492004fdb7bd2cec094b92260c6d27", "c416ddf5b909736f5b57d348f5de159693e699ad" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 01 10:46:27 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 01 10:46:27 2012 -0700" }, "message": "Merge branch \u0027x86-asm-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip\n\nPull x86/asm changes from Ingo Molnar:\n \"The one change that stands out is the alternatives patching change\n that prevents us from ever patching back instructions from SMP to UP:\n this simplifies things and speeds up CPU hotplug.\n\n Other than that it\u0027s smaller fixes, cleanups and improvements.\"\n\n* \u0027x86-asm-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:\n x86: Unspaghettize do_trap()\n x86_64: Work around old GAS bug\n x86: Use REP BSF unconditionally\n x86: Prefer TZCNT over BFS\n x86/64: Adjust types of temporaries used by ffs()/fls()/fls64()\n x86: Drop unnecessary kernel_eflags variable on 64-bit\n x86/smp: Don\u0027t ever patch back to UP if we unplug cpus\n" }, { "commit": "2fff56641be96acd938c8bd8f5f4f6d04795436f", "tree": "656454f704f7ece2177bafaa7f6107409cd9a2f0", "parents": [ "0b981cb94bc63a2d0e5eccccdca75fe57643ffce", "c5f66e99b7cb091e3d51ae8e8156892e8feb7fa3" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 01 10:45:16 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 01 10:45:16 2012 -0700" }, "message": "Merge branch \u0027timers-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip\n\nPull timer changes from Ingo Molnar:\n \"Timer enhancements, generalizations and cleanups from Tejun Heo, in\n preparation for workqueue facility enhancements.\"\n\n* \u0027timers-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:\n timer: Implement TIMER_IRQSAFE\n timer: Clean up timer initializers\n timer: Relocate declarations of init_timer_on_stack_key()\n timer: Generalize timer-\u003ebase flags handling\n" }, { "commit": "0b981cb94bc63a2d0e5eccccdca75fe57643ffce", "tree": "966ad6e6807fd1041d9962c9904e032a5ab07a65", "parents": [ "4cba3335826cbb36a218c3f5a1387e2c7c7ca9aa", "fdf9c356502ae02238efcdf90cefd7b473a63fd4" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 01 10:43:39 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 01 10:43:39 2012 -0700" }, "message": "Merge branch \u0027sched-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip\n\nPull scheduler changes from Ingo Molnar:\n \"Continued quest to clean up and enhance the cputime code by Frederic\n Weisbecker, in preparation for future tickless kernel features.\n\n Other than that, smallish changes.\"\n\nFix up trivial conflicts due to additions next to each other in arch/{x86/}Kconfig\n\n* \u0027sched-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits)\n cputime: Make finegrained irqtime accounting generally available\n cputime: Gather time/stats accounting config options into a single menu\n ia64: Reuse system and user vtime accounting functions on task switch\n ia64: Consolidate user vtime accounting\n vtime: Consolidate system/idle context detection\n cputime: Use a proper subsystem naming for vtime related APIs\n sched: cpu_power: enable ARCH_POWER\n sched/nohz: Clean up select_nohz_load_balancer()\n sched: Fix load avg vs. cpu-hotplug\n sched: Remove __ARCH_WANT_INTERRUPTS_ON_CTXSW\n sched: Fix nohz_idle_balance()\n sched: Remove useless code in yield_to()\n sched: Add time unit suffix to sched sysctl knobs\n sched/debug: Limit sd-\u003e*_idx range on sysctl\n sched: Remove AFFINE_WAKEUPS feature flag\n s390: Remove leftover account_tick_vtime() header\n cputime: Consolidate vtime handling on context switch\n sched: Move cputime code to its own file\n cputime: Generalize CONFIG_VIRT_CPU_ACCOUNTING\n tile: Remove SD_PREFER_LOCAL leftover\n ...\n" }, { "commit": "7e92daaefa68e5ef1e1732e45231e73adbb724e7", "tree": "8e7f8ac9d82654df4c65939c6682f95510e22977", "parents": [ "7a68294278ae714ce2632a54f0f46916dca64f56", "1d787d37c8ff6612b8151c6dff15bfa7347bcbdf" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 01 10:28:49 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 01 10:28:49 2012 -0700" }, "message": "Merge branch \u0027perf-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip\n\nPull perf update from Ingo Molnar:\n \"Lots of changes in this cycle as well, with hundreds of commits from\n over 30 contributors. Most of the activity was on the tooling side.\n\n Higher level changes:\n\n - New \u0027perf kvm\u0027 analysis tool, from Xiao Guangrong.\n\n - New \u0027perf trace\u0027 system-wide tracing tool\n\n - uprobes fixes + cleanups from Oleg Nesterov.\n\n - Lots of patches to make perf build on Android out of box, from\n Irina Tirdea\n\n - Extend ftrace function tracing utility to be more dynamic for its\n users. It allows for data passing to the callback functions, as\n well as reading regs as if a breakpoint were to trigger at function\n entry.\n\n The main goal of this patch series was to allow kprobes to use\n ftrace as an optimized probe point when a probe is placed on an\n ftrace nop. With lots of help from Masami Hiramatsu, and going\n through lots of iterations, we finally came up with a good\n solution.\n\n - Add cpumask for uncore pmu, use it in \u0027stat\u0027, from Yan, Zheng.\n\n - Various tracing updates from Steve Rostedt\n\n - Clean up and improve \u0027perf sched\u0027 performance by elliminating lots\n of needless calls to libtraceevent.\n\n - Event group parsing support, from Jiri Olsa\n\n - UI/gtk refactorings and improvements from Namhyung Kim\n\n - Add support for non-tracepoint events in perf script python, from\n Feng Tang\n\n - Add --symbols to \u0027script\u0027, similar to the one in \u0027report\u0027, from\n Feng Tang.\n\n Infrastructure enhancements and fixes:\n\n - Convert the trace builtins to use the growing evsel/evlist\n tracepoint infrastructure, removing several open coded constructs\n like switch like series of strcmp to dispatch events, etc.\n Basically what had already been showcased in \u0027perf sched\u0027.\n\n - Add evsel constructor for tracepoints, that uses libtraceevent just\n to parse the /format events file, use it in a new \u0027perf test\u0027 to\n make sure the libtraceevent format parsing regressions can be more\n readily caught.\n\n - Some strange errors were happening in some builds, but not on the\n next, reported by several people, problem was some parser related\n files, generated during the build, didn\u0027t had proper make deps, fix\n from Eric Sandeen.\n\n - Introduce struct and cache information about the environment where\n a perf.data file was captured, from Namhyung Kim.\n\n - Fix handling of unresolved samples when --symbols is used in\n \u0027report\u0027, from Feng Tang.\n\n - Add union member access support to \u0027probe\u0027, from Hyeoncheol Lee.\n\n - Fixups to die() removal, from Namhyung Kim.\n\n - Render fixes for the TUI, from Namhyung Kim.\n\n - Don\u0027t enable annotation in non symbolic view, from Namhyung Kim.\n\n - Fix pipe mode in \u0027report\u0027, from Namhyung Kim.\n\n - Move related stats code from stat to util/, will be used by the\n \u0027stat\u0027 kvm tool, from Xiao Guangrong.\n\n - Remove die()/exit() calls from several tools.\n\n - Resolve vdso callchains, from Jiri Olsa\n\n - Don\u0027t pass const char pointers to basename, so that we can\n unconditionally use libgen.h and thus avoid ifdef BIONIC lines,\n from David Ahern\n\n - Refactor hist formatting so that it can be reused with the GTK\n browser, From Namhyung Kim\n\n - Fix build for another rbtree.c change, from Adrian Hunter.\n\n - Make \u0027perf diff\u0027 command work with evsel hists, from Jiri Olsa.\n\n - Use the only field_sep var that is set up: symbol_conf.field_sep,\n fix from Jiri Olsa.\n\n - .gitignore compiled python binaries, from Namhyung Kim.\n\n - Get rid of die() in more libtraceevent places, from Namhyung Kim.\n\n - Rename libtraceevent \u0027private\u0027 struct member to \u0027priv\u0027 so that it\n works in C++, from Steven Rostedt\n\n - Remove lots of exit()/die() calls from tools so that the main perf\n exit routine can take place, from David Ahern\n\n - Fix x86 build on x86-64, from David Ahern.\n\n - {int,str,rb}list fixes from Suzuki K Poulose\n\n - perf.data header fixes from Namhyung Kim\n\n - Allow user to indicate objdump path, needed in cross environments,\n from Maciek Borzecki\n\n - Fix hardware cache event name generation, fix from Jiri Olsa\n\n - Add round trip test for sw, hw and cache event names, catching the\n problem Jiri fixed, after Jiri\u0027s patch, the test passes\n successfully.\n\n - Clean target should do clean for lib/traceevent too, fix from David\n Ahern\n\n - Check the right variable for allocation failure, fix from Namhyung\n Kim\n\n - Set up evsel-\u003etp_format regardless of evsel-\u003ename being set\n already, fix from Namhyung Kim\n\n - Oprofile fixes from Robert Richter.\n\n - Remove perf_event_attr needless version inflation, from Jiri Olsa\n\n - Introduce libtraceevent strerror like error reporting facility,\n from Namhyung Kim\n\n - Add pmu mappings to perf.data header and use event names from cmd\n line, from Robert Richter\n\n - Fix include order for bison/flex-generated C files, from Ben\n Hutchings\n\n - Build fixes and documentation corrections from David Ahern\n\n - Assorted cleanups from Robert Richter\n\n - Let O\u003d makes handle relative paths, from Steven Rostedt\n\n - perf script python fixes, from Feng Tang.\n\n - Initial bash completion support, from Frederic Weisbecker\n\n - Allow building without libelf, from Namhyung Kim.\n\n - Support DWARF CFI based unwind to have callchains when %bp based\n unwinding is not possible, from Jiri Olsa.\n\n - Symbol resolution fixes, while fixing support PPC64 files with an\n .opt ELF section was the end goal, several fixes for code that\n handles all architectures and cleanups are included, from Cody\n Schafer.\n\n - Assorted fixes for Documentation and build in 32 bit, from Robert\n Richter\n\n - Cache the libtraceevent event_format associated to each evsel\n early, so that we avoid relookups, i.e. calling pevent_find_event\n repeatedly when processing tracepoint events.\n\n [ This is to reduce the surface contact with libtraceevents and\n make clear what is that the perf tools needs from that lib: so\n far parsing the common and per event fields. ]\n\n - Don\u0027t stop the build if the audit libraries are not installed, fix\n from Namhyung Kim.\n\n - Fix bfd.h/libbfd detection with recent binutils, from Markus\n Trippelsdorf.\n\n - Improve warning message when libunwind devel packages not present,\n from Jiri Olsa\"\n\n* \u0027perf-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (282 commits)\n perf trace: Add aliases for some syscalls\n perf probe: Print an enum type variable in \"enum variable-name\" format when showing accessible variables\n perf tools: Check libaudit availability for perf-trace builtin\n perf hists: Add missing period_* fields when collapsing a hist entry\n perf trace: New tool\n perf evsel: Export the event_format constructor\n perf evsel: Introduce rawptr() method\n perf tools: Use perf_evsel__newtp in the event parser\n perf evsel: The tracepoint constructor should store sys:name\n perf evlist: Introduce set_filter() method\n perf evlist: Renane set_filters method to apply_filters\n perf test: Add test to check we correctly parse and match syscall open parms\n perf evsel: Handle endianity in intval method\n perf evsel: Know if byte swap is needed\n perf tools: Allow handling a NULL cpu_map as meaning \"all cpus\"\n perf evsel: Improve tracepoint constructor setup\n tools lib traceevent: Fix error path on pevent_parse_event\n perf test: Fix build failure\n trace: Move trace event enable from fs_initcall to core_initcall\n tracing: Add an option for disabling markers\n ...\n" }, { "commit": "7a68294278ae714ce2632a54f0f46916dca64f56", "tree": "78f22ea7dcfa22cbb354ba1cab6c9824a380aad5", "parents": [ "627312b9a877983f2164a67d042541ec1ffc435b", "17d83127d4c2b322dd8f217e0ac08c66eb403779" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 01 10:28:09 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 01 10:28:09 2012 -0700" }, "message": "Merge branch \u0027irq-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip\n\nPull trivial irq core update from Ingo Molnar:\n \"Two symbol exports for modular irq-chip drivers\"\n\n* \u0027irq-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:\n genirq: Export dummy_irq_chip\n genirq: Export irq_set_chip_and_handler_name()\n" }, { "commit": "627312b9a877983f2164a67d042541ec1ffc435b", "tree": "a8109ce649b4ef26998254088a54b01acd3df73f", "parents": [ "94095a1fff89dffe9451839deae4c6a40cf3ec21", "4fe84fb8c6b5081f7364af63aee8e118a665b966" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 01 10:27:18 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 01 10:27:18 2012 -0700" }, "message": "Merge branch \u0027core-locking-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip\n\nPull core locking changes from Ingo Molnar:\n \"It includes a lockdep improvement plus a spinlock inlining Kconfig\n cleanup.\"\n\n* \u0027core-locking-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:\n locking: Adjust spin lock inlining Kconfig options\n lockdep: Check if nested lock is actually held\n" }, { "commit": "94095a1fff89dffe9451839deae4c6a40cf3ec21", "tree": "c1beac5dc336d836c269253db3b00a302777598f", "parents": [ "620e77533f29796df7aff861e79bd72e08554ebb", "f784e8a7989c0da3062d04bfea3db90f41e8f738" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 01 10:25:54 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 01 10:25:54 2012 -0700" }, "message": "Merge branch \u0027core-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip\n\nPull core kernel fixes from Ingo Molnar:\n \"This is a complex task_work series from Oleg that fixes the bug that\n this VFS commit tried to fix:\n\n d35abdb28824 hold task_lock around checks in keyctl\n\n but solves the problem without the lockup regression that d35abdb28824\n introduced in v3.6.\n\n This series came late in v3.6 and I did not feel confident about it so\n late in the cycle. Might be worth backporting to -stable if it proves\n itself upstream.\"\n\n* \u0027core-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:\n task_work: Simplify the usage in ptrace_notify() and get_signal_to_deliver()\n task_work: Revert \"hold task_lock around checks in keyctl\"\n task_work: task_work_add() should not succeed after exit_task_work()\n task_work: Make task_work_add() lockless\n" }, { "commit": "16a8016372c42c7628eb4a39d75386a461e8c5d0", "tree": "94ed1fab5b073d66be50a876ad81104eeb73c732", "parents": [ "8af4efac26e1805c76144ad44118157239308d35" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Jun 01 14:22:01 2012 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Oct 01 09:58:13 2012 -0400" }, "message": "sanitize tsk_is_polling()\n\nMake default just return 0. The current default (checking\nTIF_POLLING_NRFLAG) is taken to architectures that need it;\nones that don\u0027t do polling in their idle threads don\u0027t need\nto defined TIF_POLLING_NRFLAG at all.\n\nia64 defined both TS_POLLING (used by its tsk_is_polling())\nand TIF_POLLING_NRFLAG (not used at all). Killed the latter...\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "2aa3a7f8660355c3dddead17e224545c1a3d5a5f", "tree": "d106fcaeb6b66e09591cf8ec28c836be93f4d837", "parents": [ "a4d94ff8aa864c05b33c2de1f8c5d0176d7a4b63" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Sep 21 19:55:31 2012 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sun Sep 30 13:35:55 2012 -0400" }, "message": "preparation for generic kernel_thread()\n\nLet architectures select GENERIC_KERNEL_THREAD and have their copy_thread()\ntreat NULL regs as \"it came from kernel_thread(), sp argument contains\nthe function new thread will be calling and stack_size - the argument for\nthat function\". Switching the architectures begins shortly...\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "6a06e5e1bb217be077e1f8ee2745b4c5b1aa02db", "tree": "8faea23112a11f52524eb413f71b7b02712d8b53", "parents": [ "d9f72f359e00a45a6cd7cc2d5121b04b9dc927e1", "6672d90fe779dc0dfffe027c3ede12609df091c2" ], "author": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Fri Sep 28 14:40:49 2012 -0400" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Fri Sep 28 14:40:49 2012 -0400" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net\n\nConflicts:\n\tdrivers/net/team/team.c\n\tdrivers/net/usb/qmi_wwan.c\n\tnet/batman-adv/bat_iv_ogm.c\n\tnet/ipv4/fib_frontend.c\n\tnet/ipv4/route.c\n\tnet/l2tp/l2tp_netlink.c\n\nThe team, fib_frontend, route, and l2tp_netlink conflicts were simply\noverlapping changes.\n\nqmi_wwan and bat_iv_ogm were of the \"use HEAD\" variety.\n\nWith help from Antonio Quartulli.\n\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "d55cb6cf143ae16eaa415baab520b8eaf4a1012f", "tree": "449f118e54bc77d753e319fb5a5294611b86c36d", "parents": [ "efe75d24a69fc39bb09d882ca2d5b90d4da02afe" ], "author": { "name": "Masami Hiramatsu", "email": "masami.hiramatsu.pt@hitachi.com", "time": "Thu Aug 09 21:31:10 2012 +0900" }, "committer": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Fri Sep 28 15:05:12 2012 +0930" }, "message": "ftrace: Allow stealing pages from pipe buffer\n\nUse generic steal operation on pipe buffer to allow stealing\nring buffer\u0027s read page from pipe buffer.\n\nNote that this could reduce the performance of splice on the\nsplice_write side operation without affinity setting.\nSince the ring buffer\u0027s read pages are allocated on the\ntracing-node, but the splice user does not always execute\nsplice write side operation on the same node. In this case,\nthe page will be accessed from the another node.\nThus, it is strongly recommended to assign the splicing\nthread to corresponding node.\n\nSigned-off-by: Masami Hiramatsu \u003cmasami.hiramatsu.pt@hitachi.com\u003e\nAcked-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\n" }, { "commit": "bf5308344527d015ac9a6d2bda4ad4d40fd7d943", "tree": "566e61e2cfc648c374d15cfc8c661b73e1a471f8", "parents": [ "3585e96cd1049682b8a19a0b699422156e9d735b", "979570e02981d4a8fc20b3cc8fd651856c98ee9d" ], "author": { "name": "James Morris", "email": "james.l.morris@oracle.com", "time": "Fri Sep 28 13:37:32 2012 +1000" }, "committer": { "name": "James Morris", "email": "james.l.morris@oracle.com", "time": "Fri Sep 28 13:37:32 2012 +1000" }, "message": "Merge tag \u0027v3.6-rc7\u0027 into next\n\nLinux 3.6-rc7\n\nRequested by David Howells so he can merge his key susbsystem work into\nmy tree with requisite -linus changesets.\n" }, { "commit": "2903ff019b346ab8d36ebbf54853c3aaf6590608", "tree": "962d94054765bb37bc00e977c3036e65c5fd91fe", "parents": [ "a5b470ba06aa3f96999ede5feba178df6bdb134a" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Aug 28 12:52:22 2012 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Sep 26 22:20:08 2012 -0400" }, "message": "switch simple cases of fget_light to fdget\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "e10ce27f0df9eda7b36eb16e553f07a9e05c6bba", "tree": "ac0065c4a830ad74e0999c4455c32202815fed9b", "parents": [ "64e09fa2e1fef1696a8685c7aad7e0d3dd24ce71" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Aug 27 13:02:21 2012 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Sep 26 21:10:12 2012 -0400" }, "message": "switch prctl_set_mm_exe_file() to fget_light()\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "864bdb3b6cbd9911222543fef1cfe36f88183f44", "tree": "bd00e6293592a084ee0fe68e3acb93060f54ae68", "parents": [ "2be7fd55d44882c9818ed2d1dabc0f0abab5eeed" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Aug 22 18:42:10 2012 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Sep 26 21:10:00 2012 -0400" }, "message": "new helper: daemonize_descriptors()\n\ndescriptor-related parts of daemonize, done right. As the\nresult we simplify the locking rules for -\u003efiles - we\nhold task_lock in *all* cases when we modify -\u003efiles.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "7cf4dc3c8dbfdfde163d4636f621cf99a1f63bfb", "tree": "66ae2653acb5c5325cc4fc921bba53b6e6760983", "parents": [ "dcfadfa4ec5a12404a99ad6426871a6b03a62b37" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Aug 15 19:56:12 2012 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Sep 26 21:08:54 2012 -0400" }, "message": "move files_struct-related bits from kernel/exit.c to fs/file.c\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "ab72a7028c0cc22731dc60beceb595b321d1cdb9", "tree": "0f9e4a379876a614da462ba06be41b01e8b6795d", "parents": [ "5b249b1b07c42c61d0c53b8ab4fad026e39a9be9" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Aug 21 09:40:46 2012 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Sep 26 21:08:52 2012 -0400" }, "message": "events: don\u0027t use get_unused_fd_flags() when get_unused_fd() will do\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "ad394f66fa57ae66014cb74f337e2820bac4c417", "tree": "a10670b8a9b695aec7fba79d2be2191bd405a12a", "parents": [ "5a14fead07bcf4e0acc877a8d9e1d1f40a441153" ], "author": { "name": "Anton Vorontsov", "email": "anton.vorontsov@linaro.org", "time": "Mon Sep 24 14:27:51 2012 -0700" }, "committer": { "name": "Greg Kroah-Hartman", "email": "gregkh@linuxfoundation.org", "time": "Wed Sep 26 13:42:25 2012 -0700" }, "message": "kdb: Implement disable_nmi command\n\nThis command disables NMI-entry. If NMI source has been previously shared\nwith a serial console (\"debug port\"), this effectively releases the port\nfrom KDB exclusive use, and makes the console available for normal use.\n\nOf course, NMI can be reenabled, enable_nmi modparam is used for that:\n\n\techo 1 \u003e /sys/module/kdb/parameters/enable_nmi\n\nSigned-off-by: Anton Vorontsov \u003canton.vorontsov@linaro.org\u003e\nAcked-by: Jason Wessel \u003cjason.wessel@windriver.com\u003e\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@linuxfoundation.org\u003e\n" }, { "commit": "5a14fead07bcf4e0acc877a8d9e1d1f40a441153", "tree": "7fd90cf9cdd0b734f013df6bb86f34fdd80c5732", "parents": [ "c5dd553b9fd069892c9e2de734f4f604e280fa7a" ], "author": { "name": "Anton Vorontsov", "email": "anton.vorontsov@linaro.org", "time": "Mon Sep 24 14:27:50 2012 -0700" }, "committer": { "name": "Greg Kroah-Hartman", "email": "gregkh@linuxfoundation.org", "time": "Wed Sep 26 13:42:25 2012 -0700" }, "message": "kernel/debug: Mask KGDB NMI upon entry\n\nThe new arch callback should manage NMIs that usually cause KGDB to\nenter. That is, not all NMIs should be enabled/disabled, but only\nthose that issue kgdb_handle_exception().\n\nWe must mask it as serial-line interrupt can be used as an NMI, so\nif the original KGDB-entry cause was say a breakpoint, then every\ninput to KDB console will cause KGDB to reenter, which we don\u0027t want.\n\nSigned-off-by: Anton Vorontsov \u003canton.vorontsov@linaro.org\u003e\nAcked-by: Jason Wessel \u003cjason.wessel@windriver.com\u003e\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@linuxfoundation.org\u003e\n" }, { "commit": "cb349ca95407cbc11424d5e9fc7c8e700709041b", "tree": "b20795decb064af75aae8f9f6af77806b1a4769a", "parents": [ "1fd2b4425a5702c112b441e20b250ac8833a9608" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Tue Sep 04 17:35:31 2012 -0700" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Sep 26 15:47:18 2012 +0200" }, "message": "rcu: Apply micro-optimization and int/bool fixes to RCU\u0027s idle handling\n\nChecking \"user\" before \"is_idle_task()\" allows better optimizations\nin cases where inlining is possible. Also, \"bool\" should be passed\n\"true\" or \"false\" rather than \"1\" or \"0\". This commit therefore makes\nthese changes, as noted in Josh\u0027s review.\n\nReported-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n" }, { "commit": "1fd2b4425a5702c112b441e20b250ac8833a9608", "tree": "502bd504d85db494a6876a37d1a847e9fb6477d8", "parents": [ "edf55fda35c7dc7f2d9241c3abaddaf759b457c6" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Jul 11 20:26:40 2012 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Sep 26 15:47:16 2012 +0200" }, "message": "rcu: Userspace RCU extended QS selftest\n\nProvide a config option that enables the userspace\nRCU extended quiescent state on every CPUs by default.\n\nThis is for testing purpose.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Alessio Igor Bogani \u003cabogani@kernel.org\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Avi Kivity \u003cavi@redhat.com\u003e\nCc: Chris Metcalf \u003ccmetcalf@tilera.com\u003e\nCc: Christoph Lameter \u003ccl@linux.com\u003e\nCc: Geoff Levand \u003cgeoff@infradead.org\u003e\nCc: Gilad Ben Yossef \u003cgilad@benyossef.com\u003e\nCc: Hakan Akkan \u003chakanakkan@gmail.com\u003e\nCc: H. Peter Anvin \u003chpa@zytor.com\u003e\nCc: Ingo Molnar \u003cmingo@kernel.org\u003e\nCc: Josh Triplett \u003cjosh@joshtriplett.org\u003e\nCc: Kevin Hilman \u003ckhilman@ti.com\u003e\nCc: Max Krasnyansky \u003cmaxk@qualcomm.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Stephen Hemminger \u003cshemminger@vyatta.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Sven-Thorsten Dietrich \u003cthebigcorporation@gmail.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n" }, { "commit": "20ab65e33f469c35f3dabde3445b668aa9c943ee", "tree": "9acfb3c837c1dfa2ed3bae4471871f154376a66a", "parents": [ "90a340ed53f0f3bcc3fdf1b2cff56c0e4e911d01" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Jul 11 20:26:37 2012 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Sep 26 15:47:11 2012 +0200" }, "message": "rcu: Exit RCU extended QS on user preemption\n\nWhen exceptions or irq are about to resume userspace, if\nthe task needs to be rescheduled, the arch low level code\ncalls schedule() directly.\n\nIf we call it, it is because we have the TIF_RESCHED flag:\n\n- It can be set after random local calls to set_need_resched()\n(RCU, drm, ...)\n\n- A wake up happened and the CPU needs preemption. This can\n happen in several ways:\n\n * Remotely: the remote waking CPU has set TIF_RESCHED and send the\n wakee an IPI to schedule the new task.\n * Remotely enqueued: the remote waking CPU sends an IPI to the target\n and the wake up is made by the target.\n * Locally: waking CPU \u003d\u003d wakee CPU and the wakeup is done locally.\n set_need_resched() is called without IPI.\n\nIn the case of local and remotely enqueued wake ups, the tick can\nbe restarted when we enqueue the new task and RCU can exit the\nextended quiescent state at the same time. Then by the time we reach\nirq exit path and we call schedule, we are not in RCU user mode.\n\nBut if we call schedule() only because something called set_need_resched(),\nRCU may still be in user mode when we reach schedule.\n\nAlso if a wake up is done remotely, the CPU might see the TIF_RESCHED\nflag and call schedule while the IPI has not yet happen to restart the\ntick and exit RCU user mode.\n\nWe need to manually protect against these corner cases.\n\nCreate a new API schedule_user() that calls schedule() inside\nrcu_user_exit()-rcu_user_enter() in order to protect it. Archs\nwill need to rely on it now to implement user preemption safely.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Alessio Igor Bogani \u003cabogani@kernel.org\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Avi Kivity \u003cavi@redhat.com\u003e\nCc: Chris Metcalf \u003ccmetcalf@tilera.com\u003e\nCc: Christoph Lameter \u003ccl@linux.com\u003e\nCc: Geoff Levand \u003cgeoff@infradead.org\u003e\nCc: Gilad Ben Yossef \u003cgilad@benyossef.com\u003e\nCc: Hakan Akkan \u003chakanakkan@gmail.com\u003e\nCc: H. Peter Anvin \u003chpa@zytor.com\u003e\nCc: Ingo Molnar \u003cmingo@kernel.org\u003e\nCc: Josh Triplett \u003cjosh@joshtriplett.org\u003e\nCc: Kevin Hilman \u003ckhilman@ti.com\u003e\nCc: Max Krasnyansky \u003cmaxk@qualcomm.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Stephen Hemminger \u003cshemminger@vyatta.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Sven-Thorsten Dietrich \u003cthebigcorporation@gmail.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n" }, { "commit": "90a340ed53f0f3bcc3fdf1b2cff56c0e4e911d01", "tree": "af5ad4146d5d79fff12c764f8695b86b36c47b31", "parents": [ "6ba3c97a38803883c2eee489505796cb0a727122" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Jul 11 20:26:36 2012 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Sep 26 15:47:09 2012 +0200" }, "message": "rcu: Exit RCU extended QS on kernel preemption after irq/exception\n\nWhen an exception or an irq exits, and we are going to resume into\ninterrupted kernel code, the low level architecture code calls\npreempt_schedule_irq() if there is a need to reschedule.\n\nIf the interrupt/exception occured between a call to rcu_user_enter()\n(from syscall exit, exception exit, do_notify_resume exit, ...) and\na real resume to userspace (iret,...), preempt_schedule_irq() can be\ncalled whereas RCU thinks we are in userspace. But preempt_schedule_irq()\nis going to run kernel code and may be some RCU read side critical\nsection. We must exit the userspace extended quiescent state before\nwe call it.\n\nTo solve this, just call rcu_user_exit() in the beginning of\npreempt_schedule_irq().\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Alessio Igor Bogani \u003cabogani@kernel.org\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Avi Kivity \u003cavi@redhat.com\u003e\nCc: Chris Metcalf \u003ccmetcalf@tilera.com\u003e\nCc: Christoph Lameter \u003ccl@linux.com\u003e\nCc: Geoff Levand \u003cgeoff@infradead.org\u003e\nCc: Gilad Ben Yossef \u003cgilad@benyossef.com\u003e\nCc: Hakan Akkan \u003chakanakkan@gmail.com\u003e\nCc: H. Peter Anvin \u003chpa@zytor.com\u003e\nCc: Ingo Molnar \u003cmingo@kernel.org\u003e\nCc: Josh Triplett \u003cjosh@joshtriplett.org\u003e\nCc: Kevin Hilman \u003ckhilman@ti.com\u003e\nCc: Max Krasnyansky \u003cmaxk@qualcomm.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Stephen Hemminger \u003cshemminger@vyatta.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Sven-Thorsten Dietrich \u003cthebigcorporation@gmail.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n" }, { "commit": "04e7e951532b390b16feb070be9972b8fad2fc57", "tree": "d1d18c2febd422428fad0746afd23c2fd84684d8", "parents": [ "1e1a689f10a27a4fe1ab9b4c6db04fa7232746a5" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Mon Jul 16 15:06:40 2012 -0700" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Sep 26 15:47:02 2012 +0200" }, "message": "rcu: Switch task\u0027s syscall hooks on context switch\n\nClear the syscalls hook of a task when it\u0027s scheduled out so that if\nthe task migrates, it doesn\u0027t run the syscall slow path on a CPU\nthat might not need it.\n\nAlso set the syscalls hook on the next task if needed.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Alessio Igor Bogani \u003cabogani@kernel.org\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Avi Kivity \u003cavi@redhat.com\u003e\nCc: Chris Metcalf \u003ccmetcalf@tilera.com\u003e\nCc: Christoph Lameter \u003ccl@linux.com\u003e\nCc: Geoff Levand \u003cgeoff@infradead.org\u003e\nCc: Gilad Ben Yossef \u003cgilad@benyossef.com\u003e\nCc: Hakan Akkan \u003chakanakkan@gmail.com\u003e\nCc: H. Peter Anvin \u003chpa@zytor.com\u003e\nCc: Ingo Molnar \u003cmingo@kernel.org\u003e\nCc: Josh Triplett \u003cjosh@joshtriplett.org\u003e\nCc: Kevin Hilman \u003ckhilman@ti.com\u003e\nCc: Max Krasnyansky \u003cmaxk@qualcomm.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Stephen Hemminger \u003cshemminger@vyatta.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Sven-Thorsten Dietrich \u003cthebigcorporation@gmail.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n" }, { "commit": "1e1a689f10a27a4fe1ab9b4c6db04fa7232746a5", "tree": "098f180287723813d248f59f452ca3a7db04b636", "parents": [ "c5d900bf676b1e2a61c44483932c8088651bbb4e" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Jul 11 20:26:32 2012 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Sep 26 15:47:01 2012 +0200" }, "message": "rcu: Ignore userspace extended quiescent state by default\n\nBy default we don\u0027t want to enter into RCU extended quiescent\nstate while in userspace because doing this produces some overhead\n(eg: use of syscall slowpath). Set it off by default and ready to\nrun when some feature like adaptive tickless need it.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Alessio Igor Bogani \u003cabogani@kernel.org\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Avi Kivity \u003cavi@redhat.com\u003e\nCc: Chris Metcalf \u003ccmetcalf@tilera.com\u003e\nCc: Christoph Lameter \u003ccl@linux.com\u003e\nCc: Geoff Levand \u003cgeoff@infradead.org\u003e\nCc: Gilad Ben Yossef \u003cgilad@benyossef.com\u003e\nCc: Hakan Akkan \u003chakanakkan@gmail.com\u003e\nCc: H. Peter Anvin \u003chpa@zytor.com\u003e\nCc: Ingo Molnar \u003cmingo@kernel.org\u003e\nCc: Josh Triplett \u003cjosh@joshtriplett.org\u003e\nCc: Kevin Hilman \u003ckhilman@ti.com\u003e\nCc: Max Krasnyansky \u003cmaxk@qualcomm.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Stephen Hemminger \u003cshemminger@vyatta.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Sven-Thorsten Dietrich \u003cthebigcorporation@gmail.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n" }, { "commit": "c5d900bf676b1e2a61c44483932c8088651bbb4e", "tree": "881ee6420ba291d68d451986d5ed9832ee95661f", "parents": [ "2b1d5024e17be459aa6385763ca3faa8f01c52d9" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Jul 11 20:26:31 2012 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Sep 26 15:46:55 2012 +0200" }, "message": "rcu: Allow rcu_user_enter()/exit() to nest\n\nAllow calls to rcu_user_enter() even if we are already\nin userspace (as seen by RCU) and allow calls to rcu_user_exit()\neven if we are already in the kernel.\n\nThis makes the APIs more flexible to be called from architectures.\nException entries for example won\u0027t need to know if they come from\nuserspace before calling rcu_user_exit().\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Alessio Igor Bogani \u003cabogani@kernel.org\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Avi Kivity \u003cavi@redhat.com\u003e\nCc: Chris Metcalf \u003ccmetcalf@tilera.com\u003e\nCc: Christoph Lameter \u003ccl@linux.com\u003e\nCc: Geoff Levand \u003cgeoff@infradead.org\u003e\nCc: Gilad Ben Yossef \u003cgilad@benyossef.com\u003e\nCc: Hakan Akkan \u003chakanakkan@gmail.com\u003e\nCc: H. Peter Anvin \u003chpa@zytor.com\u003e\nCc: Ingo Molnar \u003cmingo@kernel.org\u003e\nCc: Josh Triplett \u003cjosh@joshtriplett.org\u003e\nCc: Kevin Hilman \u003ckhilman@ti.com\u003e\nCc: Max Krasnyansky \u003cmaxk@qualcomm.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Stephen Hemminger \u003cshemminger@vyatta.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Sven-Thorsten Dietrich \u003cthebigcorporation@gmail.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n" }, { "commit": "2b1d5024e17be459aa6385763ca3faa8f01c52d9", "tree": "45d1ea5872eea69b7f0443086d98ddbcbc221b94", "parents": [ "9a0c6fef423528ba5b62aa31b29aabf689eb8f70" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Jul 11 20:26:30 2012 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Sep 26 15:44:04 2012 +0200" }, "message": "rcu: Settle config for userspace extended quiescent state\n\nCreate a new config option under the RCU menu that put\nCPUs under RCU extended quiescent state (as in dynticks\nidle mode) when they run in userspace. This require\nsome contribution from architectures to hook into kernel\nand userspace boundaries.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Alessio Igor Bogani \u003cabogani@kernel.org\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Avi Kivity \u003cavi@redhat.com\u003e\nCc: Chris Metcalf \u003ccmetcalf@tilera.com\u003e\nCc: Christoph Lameter \u003ccl@linux.com\u003e\nCc: Geoff Levand \u003cgeoff@infradead.org\u003e\nCc: Gilad Ben Yossef \u003cgilad@benyossef.com\u003e\nCc: Hakan Akkan \u003chakanakkan@gmail.com\u003e\nCc: H. Peter Anvin \u003chpa@zytor.com\u003e\nCc: Ingo Molnar \u003cmingo@kernel.org\u003e\nCc: Josh Triplett \u003cjosh@joshtriplett.org\u003e\nCc: Kevin Hilman \u003ckhilman@ti.com\u003e\nCc: Max Krasnyansky \u003cmaxk@qualcomm.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Stephen Hemminger \u003cshemminger@vyatta.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Sven-Thorsten Dietrich \u003cthebigcorporation@gmail.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n" }, { "commit": "9a0c6fef423528ba5b62aa31b29aabf689eb8f70", "tree": "8560ac17f9a19f2f03c47fed1eb3e02011a6205f", "parents": [ "19dd1591fc379f1d89f39cd99cbbe97433baa3c3" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Thu Jun 28 12:33:51 2012 -0700" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Sep 26 15:44:02 2012 +0200" }, "message": "rcu: Make RCU_FAST_NO_HZ handle adaptive ticks\n\nThe current implementation of RCU_FAST_NO_HZ tries reasonably hard to rid\nthe current CPU of RCU callbacks. This is appropriate when the CPU is\nentering idle, where it doesn\u0027t have much useful to do anyway, but is most\ndefinitely not what you want when transitioning to user-mode execution.\nThis commit therefore detects the adaptive-tick case, and refrains from\nburning CPU time getting rid of RCU callbacks in that case.\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n" }, { "commit": "19dd1591fc379f1d89f39cd99cbbe97433baa3c3", "tree": "9c298c4c0f38e68f53c2e4a13080fbec1282953f", "parents": [ "adf5091e6ccaa02905e7a28f9ff44f46c7f4c230" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Mon Jun 04 16:42:35 2012 -0700" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Sep 26 15:44:01 2012 +0200" }, "message": "rcu: New rcu_user_enter_after_irq() and rcu_user_exit_after_irq() APIs\n\nIn some cases, it is necessary to enter or exit userspace-RCU-idle mode\nfrom an interrupt handler, for example, if some other CPU sends this\nCPU a resched IPI. In this case, the current CPU would enter the IPI\nhandler in userspace-RCU-idle mode, but would need to exit the IPI handler\nafter having exited that mode.\n\nTo allow this to work, this commit adds two new APIs to TREE_RCU:\n\n- rcu_user_enter_after_irq(). This must be called from an interrupt between\nrcu_irq_enter() and rcu_irq_exit(). After the irq calls rcu_irq_exit(),\nthe irq handler will return into an RCU extended quiescent state.\nIn theory, this interrupt is never a nested interrupt, but in practice\nit might interrupt softirq, which looks to RCU like a nested interrupt.\n\n- rcu_user_exit_after_irq(). This must be called from a non-nesting\ninterrupt, interrupting an RCU extended quiescent state, also\nbetween rcu_irq_enter() and rcu_irq_exit(). After the irq calls\nrcu_irq_exit(), the irq handler will return in an RCU non-quiescent\nstate.\n\n[ Combined with \"Allow calls to rcu_exit_user_irq from nesting irqs.\" ]\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n" }, { "commit": "adf5091e6ccaa02905e7a28f9ff44f46c7f4c230", "tree": "14a9a14c07870063a2fdfb23fa7b4c54adca4502", "parents": [ "593d1006cdf710ab3469c0c37c184fea0bc3da97" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Thu Jun 28 11:20:21 2012 -0700" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Sep 26 15:43:50 2012 +0200" }, "message": "rcu: New rcu_user_enter() and rcu_user_exit() APIs\n\nRCU currently insists that only idle tasks can enter RCU idle mode, which\nprohibits an adaptive tickless kernel (AKA nohz cpusets), which in turn\nwould mean that usermode execution would always take scheduling-clock\ninterrupts, even when there is only one task runnable on the CPU in\nquestion.\n\nThis commit therefore adds rcu_user_enter() and rcu_user_exit(), which\nallow non-idle tasks to enter RCU idle mode. These are quite similar\nto rcu_idle_enter() and rcu_idle_exit(), respectively, except that they\nomit the idle-task checks.\n\n[ Updated to use \"user\" flag rather than separate check functions. ]\n\n[ paulmck: Updated to drop exports of new functions based on Josh\u0027s patch\n getting rid of the need for them. ]\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nCc: Alessio Igor Bogani \u003cabogani@kernel.org\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Avi Kivity \u003cavi@redhat.com\u003e\nCc: Chris Metcalf \u003ccmetcalf@tilera.com\u003e\nCc: Christoph Lameter \u003ccl@linux.com\u003e\nCc: Daniel Lezcano \u003cdaniel.lezcano@linaro.org\u003e\nCc: Geoff Levand \u003cgeoff@infradead.org\u003e\nCc: Gilad Ben Yossef \u003cgilad@benyossef.com\u003e\nCc: Hakan Akkan \u003chakanakkan@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@kernel.org\u003e\nCc: Kevin Hilman \u003ckhilman@ti.com\u003e\nCc: Max Krasnyansky \u003cmaxk@qualcomm.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Stephen Hemminger \u003cshemminger@vyatta.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Sven-Thorsten Dietrich \u003cthebigcorporation@gmail.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n" }, { "commit": "593d1006cdf710ab3469c0c37c184fea0bc3da97", "tree": "e4db58440018a52089e8d6b39160f753ab10df99", "parents": [ "5217192b85480353aeeb395574e60d0db04f3676", "9b20aa63b8fc9a6a3b6831f4eae3621755e51211" ], "author": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Tue Sep 25 10:03:56 2012 -0700" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Tue Sep 25 10:03:56 2012 -0700" }, "message": "Merge remote-tracking branch \u0027tip/core/rcu\u0027 into next.2012.09.25b\n\nResolved conflict in kernel/sched/core.c using Peter Zijlstra\u0027s\napproach from https://lkml.org/lkml/2012/9/5/585.\n" }, { "commit": "5217192b85480353aeeb395574e60d0db04f3676", "tree": "a45b440623a8fc55ece18b72e40829b2d9815d74", "parents": [ "bda4ec9f6a7d7b249c7b14baa553731efedce300", "bff4a394795add6b919debc009f72b7607f5d4bf" ], "author": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Tue Sep 25 10:01:45 2012 -0700" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Tue Sep 25 10:01:45 2012 -0700" }, "message": "Merge remote-tracking branch \u0027tip/smp/hotplug\u0027 into next.2012.09.25b\n\nThe conflicts between kernel/rcutree.h and kernel/rcutree_plugin.h\nwere due to adjacent insertions and deletions, which were resolved\nby simply accepting the changes on both branches.\n" }, { "commit": "a7e1a9e3af71b45ecae2dae35851f238117b317d", "tree": "8b1d15d63779ba13d7884288c96a3510b7fde4b6", "parents": [ "bf9fae9f5e4ca8dce4708812f9ad6281e61df109" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Sat Sep 08 16:14:02 2012 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Sep 25 15:42:37 2012 +0200" }, "message": "vtime: Consolidate system/idle context detection\n\nMove the code that finds out to which context we account the\ncputime into generic layer.\n\nArchs that consider the whole time spent in the idle task as idle\ntime (ia64, powerpc) can rely on the generic vtime_account()\nand implement vtime_account_system() and vtime_account_idle(),\nletting the generic code to decide when to call which API.\n\nArchs that have their own meaning of idle time, such as s390\nthat only considers the time spent in CPU low power mode as idle\ntime, can just override vtime_account().\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Tony Luck \u003ctony.luck@intel.com\u003e\nCc: Fenghua Yu \u003cfenghua.yu@intel.com\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Ingo Molnar \u003cmingo@kernel.org\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\n" }, { "commit": "bf9fae9f5e4ca8dce4708812f9ad6281e61df109", "tree": "02318ac3db48dd993a4a430de5de66a337895d16", "parents": [ "bc2a27cd27271c5257989a57f511be86b26f5e54" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Sat Sep 08 15:23:11 2012 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Sep 25 15:31:31 2012 +0200" }, "message": "cputime: Use a proper subsystem naming for vtime related APIs\n\nUse a naming based on vtime as a prefix for virtual based\ncputime accounting APIs:\n\n- account_system_vtime() -\u003e vtime_account()\n- account_switch_vtime() -\u003e vtime_task_switch()\n\nIt makes it easier to allow for further declension such\nas vtime_account_system(), vtime_account_idle(), ... if we\nwant to find out the context we account to from generic code.\n\nThis also make it better to know on which subsystem these APIs\nrefer to.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Tony Luck \u003ctony.luck@intel.com\u003e\nCc: Fenghua Yu \u003cfenghua.yu@intel.com\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Ingo Molnar \u003cmingo@kernel.org\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\n" }, { "commit": "bda4ec9f6a7d7b249c7b14baa553731efedce300", "tree": "3ef6df518d8d48a29f4aafc05ffa4d427b015ce9", "parents": [ "b17c7035f37f47c7f7cb08a5555ab2aebfa31f91", "60f53782c51f27c695840ce90c6c432284319eef", "86f343b50bb9f56cce60fade22da9defff28934c", "429227bbe55647aa42f8f63cac61e4544e248629", "93482f4ef1093f5961a63359a34612183d6beea0" ], "author": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Sep 23 20:37:55 2012 -0700" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Mon Sep 24 20:02:22 2012 -0700" }, "message": "Merge branches \u0027bigrt.2012.09.23a\u0027, \u0027doctorture.2012.09.23a\u0027, \u0027fixes.2012.09.23a\u0027, \u0027hotplug.2012.09.23a\u0027 and \u0027idlechop.2012.09.23a\u0027 into HEAD\n\nbigrt.2012.09.23a contains additional commits to reduce scheduling latency\n\tfrom RCU on huge systems (many hundrends or thousands of CPUs).\n\ndoctorture.2012.09.23a contains documentation changes and rcutorture fixes.\n\nfixes.2012.09.23a contains miscellaneous fixes.\n\nhotplug.2012.09.23a contains CPU-hotplug-related changes.\n\nidle.2012.09.23a fixes architectures for which RCU no longer considered\n\tthe idle loop to be a quiescent state due to earlier\n\tadaptive-dynticks changes. Affected architectures are alpha,\n\tcris, frv, h8300, m32r, m68k, mn10300, parisc, score, xtensa,\n\tand ia64.\n" }, { "commit": "5640f7685831e088fe6c2e1f863a6805962f8e81", "tree": "fb7660173338a45c27d610eb59ba20cf5c2b91b8", "parents": [ "b98b8babd6e3370fadb7c6eaacb00eb2f6344a6c" ], "author": { "name": "Eric Dumazet", "email": "edumazet@google.com", "time": "Sun Sep 23 23:04:42 2012 +0000" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Mon Sep 24 16:31:37 2012 -0400" }, "message": "net: use a per task frag allocator\n\nWe currently use a per socket order-0 page cache for tcp_sendmsg()\noperations.\n\nThis page is used to build fragments for skbs.\n\nIts done to increase probability of coalescing small write() into\nsingle segments in skbs still in write queue (not yet sent)\n\nBut it wastes a lot of memory for applications handling many mostly\nidle sockets, since each socket holds one page in sk-\u003esk_sndmsg_page\n\nIts also quite inefficient to build TSO 64KB packets, because we need\nabout 16 pages per skb on arches where PAGE_SIZE \u003d 4096, so we hit\npage allocator more than wanted.\n\nThis patch adds a per task frag allocator and uses bigger pages,\nif available. An automatic fallback is done in case of memory pressure.\n\n(up to 32768 bytes per frag, thats order-3 pages on x86)\n\nThis increases TCP stream performance by 20% on loopback device,\nbut also benefits on other network devices, since 8x less frags are\nmapped on transmit and unmapped on tx completion. Alexander Duyck\nmentioned a probable performance win on systems with IOMMU enabled.\n\nIts possible some SG enabled hardware cant cope with bigger fragments,\nbut their ndo_start_xmit() should already handle this, splitting a\nfragment in sub fragments, since some arches have PAGE_SIZE\u003d65536\n\nSuccessfully tested on various ethernet devices.\n(ixgbe, igb, bnx2x, tg3, mellanox mlx4)\n\nSigned-off-by: Eric Dumazet \u003cedumazet@google.com\u003e\nCc: Ben Hutchings \u003cbhutchings@solarflare.com\u003e\nCc: Vijay Subramanian \u003csubramanian.vijay@gmail.com\u003e\nCc: Alexander Duyck \u003calexander.h.duyck@intel.com\u003e\nTested-by: Vijay Subramanian \u003csubramanian.vijay@gmail.com\u003e\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "8781915ad2716adcd8cd5cc52cee791fc8b00fdf", "tree": "0d16c498542e57b9fe5d709dba9042af63c5c1d1", "parents": [ "5224c3a31549f1c056039545b289e1b01ed02f12" ], "author": { "name": "Ezequiel Garcia", "email": "elezegarcia@gmail.com", "time": "Wed Sep 12 11:47:57 2012 -0300" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon Sep 24 14:13:02 2012 -0400" }, "message": "trace: Move trace event enable from fs_initcall to core_initcall\n\nThis patch splits trace event initialization in two stages:\n * ftrace enable\n * sysfs event entry creation\n\nThis allows to capture trace events from an earlier point\nby using \u0027trace_event\u0027 kernel parameter and is important\nto trace boot-up allocations.\n\nNote that, in order to enable events at core_initcall,\nit\u0027s necessary to move init_ftrace_syscalls() from\ncore_initcall to early_initcall.\n\nLink: http://lkml.kernel.org/r/1347461277-25302-1-git-send-email-elezegarcia@gmail.com\n\nSigned-off-by: Ezequiel Garcia \u003celezegarcia@gmail.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "5224c3a31549f1c056039545b289e1b01ed02f12", "tree": "30750af387cad904c3935418b0c17384abce1de8", "parents": [ "50a011f6409e888d5f41343024d24885281f048c" ], "author": { "name": "Mandeep Singh Baines", "email": "mandeep.baines@gmail.com", "time": "Fri Sep 07 18:12:19 2012 -0700" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon Sep 24 14:10:44 2012 -0400" }, "message": "tracing: Add an option for disabling markers\n\nIn our application, we have trace markers spread through user-space.\nWe have markers in GL, X, etc. These are super handy for Chrome\u0027s\nabout:tracing feature (Chrome + system + kernel trace view), but\ncan be very distracting when you\u0027re trying to debug a kernel issue.\n\nI normally, use \"grep -v tracing_mark_write\" but it would be nice\nif I could just temporarily disable markers all together.\n\nLink: http://lkml.kernel.org/r/1347066739-26285-1-git-send-email-msb@chromium.org\n\nCC: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nSigned-off-by: Mandeep Singh Baines \u003cmsb@chromium.org\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "5d18023294abc22984886bd7185344e0c2be0daf", "tree": "13c90f90db9e00e28ae4c00bfa7ba6d0702bced5", "parents": [ "0d8ee37e2fcb7b77b9c5dee784beca5a215cad4c" ], "author": { "name": "Peter Zijlstra", "email": "peterz@infradead.org", "time": "Mon Aug 20 11:26:57 2012 +0200" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Sep 23 07:43:56 2012 -0700" }, "message": "sched: Fix load avg vs cpu-hotplug\n\nRabik and Paul reported two different issues related to the same few\nlines of code.\n\nRabik\u0027s issue is that the nr_uninterruptible migration code is wrong in\nthat he sees artifacts due to this (Rabik please do expand in more\ndetail).\n\nPaul\u0027s issue is that this code as it stands relies on us using\nstop_machine() for unplug, we all would like to remove this assumption\nso that eventually we can remove this stop_machine() usage altogether.\n\nThe only reason we\u0027d have to migrate nr_uninterruptible is so that we\ncould use for_each_online_cpu() loops in favour of\nfor_each_possible_cpu() loops, however since nr_uninterruptible() is the\nonly such loop and its using possible lets not bother at all.\n\nThe problem Rabik sees is (probably) caused by the fact that by\nmigrating nr_uninterruptible we screw rq-\u003ecalc_load_active for both rqs\ninvolved.\n\nSo don\u0027t bother with fancy migration schemes (meaning we now have to\nkeep using for_each_possible_cpu()) and instead fold any nr_active delta\nafter we migrate all tasks away to make sure we don\u0027t have any skewed\nnr_active accounting.\n\n[ paulmck: Move call to calc_load_migration to CPU_DEAD to avoid\nmiscounting noted by Rakib. ]\n\nReported-by: Rakib Mullick \u003crakib.mullick@gmail.com\u003e\nReported-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\n" }, { "commit": "0d8ee37e2fcb7b77b9c5dee784beca5a215cad4c", "tree": "6e7661bf5231b4c48a6681a9fa8e8ede7915d0a7", "parents": [ "1331e7a1bbe1f11b19c4327ba0853bee2a606543" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Fri Aug 03 13:16:15 2012 -0700" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Sep 23 07:43:55 2012 -0700" }, "message": "rcu: Disallow callback registry on offline CPUs\n\nPosting a callback after the CPU_DEAD notifier effectively leaks\nthat callback unless/until that CPU comes back online. Silence is\nunhelpful when attempting to track down such leaks, so this commit emits\na WARN_ON_ONCE() and unconditionally leaks the callback when an offline\nCPU attempts to register a callback. The rdp-\u003enxttail[RCU_NEXT_TAIL] is\nset to NULL in the CPU_DEAD notifier and restored in the CPU_UP_PREPARE\nnotifier, allowing _call_rcu() to determine exactly when posting callbacks\nis illegal.\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n" }, { "commit": "1331e7a1bbe1f11b19c4327ba0853bee2a606543", "tree": "596d9ed379ef7e2c5d8cf1cc0ba56ade084548ec", "parents": [ "a10d206ef1a83121ab7430cb196e0376a7145b22" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Thu Aug 02 17:43:50 2012 -0700" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Sep 23 07:43:55 2012 -0700" }, "message": "rcu: Remove _rcu_barrier() dependency on __stop_machine()\n\nCurrently, _rcu_barrier() relies on preempt_disable() to prevent\nany CPU from going offline, which in turn depends on CPU hotplug\u0027s\nuse of __stop_machine().\n\nThis patch therefore makes _rcu_barrier() use get_online_cpus() to\nblock CPU-hotplug operations. This has the added benefit of removing\nthe need for _rcu_barrier() to adopt callbacks: Because CPU-hotplug\noperations are excluded, there can be no callbacks to adopt. This\ncommit simplifies the code accordingly.\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n" }, { "commit": "86f343b50bb9f56cce60fade22da9defff28934c", "tree": "c2951c5b76afcd56a3d9f4a5d1d40e95528f3bbe", "parents": [ "22a767269a767b3ee91e4aaea353ac6bec6a912d" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Fri Sep 21 10:41:50 2012 -0700" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Sep 23 07:42:52 2012 -0700" }, "message": "rcu: Fix CONFIG_RCU_FAST_NO_HZ stall warning message\n\nThe print_cpu_stall_fast_no_hz() function attempts to print -1 when\nthe -\u003eidle_gp_timer is not pending, but unsigned arithmetic causes it\nto instead print ULONG_MAX, which is 4294967295 on 32-bit systems and\n18446744073709551615 on 64-bit systems. Neither of these are the most\nreader-friendly values, so this commit instead causes \"timer not pending\"\nto be printed when -\u003eidle_gp_timer is not pending.\n\nReported-by: Paul Walmsley \u003cpaul@pwsan.com\u003e\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\n" }, { "commit": "22a767269a767b3ee91e4aaea353ac6bec6a912d", "tree": "21ed83a572e345a81a9ed17182e0cf393712b003", "parents": [ "58fac09566bb48592a09ef0fe0c7dbefa0cd2109" ], "author": { "name": "Li Zhong", "email": "zhong@linux.vnet.ibm.com", "time": "Wed Sep 19 08:52:32 2012 -0700" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Sep 23 07:42:52 2012 -0700" }, "message": "rcu: Move TINY_RCU quiescent state out of extended quiescent state\n\nTINY_RCU\u0027s rcu_idle_enter_common() invokes rcu_sched_qs() in order\nto inform the RCU core of the quiescent state implied by idle entry.\nOf course, idle is also an extended quiescent state, so that the call\nto rcu_sched_qs() speeds up RCU\u0027s invoking of any callbacks that might\nbe queued. This speed-up is important when entering into dyntick-idle\nmode -- if there are no further scheduling-clock interrupts, the callbacks\nmight never be invoked, which could result in a system hang.\n\nHowever, processing callbacks does event tracing, which in turn\nimplies RCU read-side critical sections, which are illegal in extended\nquiescent states. This patch therefore moves the call to rcu_sched_qs()\nso that it precedes the point at which we inform lockdep that RCU has\nentered an extended quiescent state.\n\nSigned-off-by: Li Zhong \u003czhong@linux.vnet.ibm.com\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\n" }, { "commit": "803b0ebae921714d1c36f0996db8125eda5fae53", "tree": "06366b934b3e703e4f8e633d853e9eb22495931b", "parents": [ "7a11e2058f02feb6884efb067f328012c318a13f" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Thu Aug 23 08:34:07 2012 -0700" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Sep 23 07:42:52 2012 -0700" }, "message": "time: RCU permitted to stop idle entry via softirq\n\nThe can_stop_idle_tick() function complains if a softirq vector is\nraised too late in the idle-entry process, presumably in order to\nprevent dangling softirq invocations from being delayed across the\nfull idle period, which might be indefinitely long -- and if softirq\nwas asserted any later than the call to this function, such a delay\nmight well happen.\n\nHowever, RCU needs to be able to use softirq to stop idle entry in\norder to be able to drain RCU callbacks from the current CPU, which in\nturn enables faster entry into dyntick-idle mode, which in turn reduces\npower consumption. Because RCU takes this action at a well-defined\npoint in the idle-entry path, it is safe for RCU to take this approach.\n\nThis commit therefore silences the error message that is sometimes\nproduced when the going-idle CPU suddenly finds that it has an RCU_SOFTIRQ\nto process. The error message will continue to be issued for other\nsoftirq vectors.\n\nReported-by: Sedat Dilek \u003csedat.dilek@gmail.com\u003e\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nTested-by: Sedat Dilek \u003csedat.dilek@gmail.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n" }, { "commit": "7a11e2058f02feb6884efb067f328012c318a13f", "tree": "a0e2694a5ea94bc670de640a2631545517201868", "parents": [ "fdab649b1aa732cd6e79654349088465cdff49af" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Tue Aug 21 12:14:19 2012 -0700" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Sep 23 07:42:51 2012 -0700" }, "message": "rcu: Move TINY_PREEMPT_RCU away from raw_local_irq_save()\n\nThe use of raw_local_irq_save() is unnecessary, given that local_irq_save()\nreally does disable interrupts. Also, it appears to interfere with lockdep.\nTherefore, this commit moves to local_irq_save().\n\nReported-by: Fengguang Wu \u003cfengguang.wu@intel.com\u003e\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nTested-by: Fengguang Wu \u003cfengguang.wu@intel.com\u003e\n" }, { "commit": "fdab649b1aa732cd6e79654349088465cdff49af", "tree": "5a8b75266eb451b0766f2c622744ae984ac7c3b5", "parents": [ "c96ea7cfdd88d0a67c970502bc5313fede34b86b" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Mon Aug 13 16:34:12 2012 -0700" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Sep 23 07:42:51 2012 -0700" }, "message": "rcu: Remove redundant memory barrier from __call_rcu()\n\nThe first memory barrier in __call_rcu() is supposed to order any\nupdates done beforehand by the caller against the actual queuing\nof the callback. However, the second memory barrier (which is intended\nto order incrementing the queue lengths before queuing the callback)\nis also between the caller\u0027s updates and the queuing of the callback.\nThe second memory barrier can therefore serve both purposes.\n\nThis commit therefore removes the first memory barrier.\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n" }, { "commit": "c96ea7cfdd88d0a67c970502bc5313fede34b86b", "tree": "b5e8273bfa99f3ddf72e3a4fbfb6483b60d7f345", "parents": [ "c8020a67e625c714c4dbedc8ae2944b461e204ec" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Mon Aug 13 11:17:06 2012 -0700" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Sep 23 07:42:51 2012 -0700" }, "message": "rcu: Avoid spurious RCU CPU stall warnings\n\nIf a given CPU avoids the idle loop but also avoids starting a new\nRCU grace period for a full minute, RCU can issue spurious RCU CPU\nstall warnings. This commit fixes this issue by adding a check for\nongoing grace period to avoid these spurious stall warnings.\n\nReported-by: Becky Bruce \u003cbgillbruce@gmail.com\u003e\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n" }, { "commit": "c8020a67e625c714c4dbedc8ae2944b461e204ec", "tree": "12ad0e02b6e30dffd8c7e2b24cdb278a6b799ad4", "parents": [ "5fd4dc068c4ded1339180dbcd1a99e15b1c0a728" ], "author": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Fri Aug 10 16:55:59 2012 -0700" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Sep 23 07:42:51 2012 -0700" }, "message": "rcu: Protect rcu_node accesses during CPU stall warnings\n\nThe print_other_cpu_stall() function accesses a number of rcu_node\nfields without protection from the -\u003elock. In theory, this is not\na problem because the fields accessed are all integers, but in\npractice the compiler can get nasty. Therefore, the commit extends\nthe existing critical section to cover the entire loop body.\n\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\n" }, { "commit": "5fd4dc068c4ded1339180dbcd1a99e15b1c0a728", "tree": "89e0113e51e255dac69a726ada08044d461a0c18", "parents": [ "115f7a7ca0d412aab81acaaaa95eb1ab1c622e2f" ], "author": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Fri Aug 10 16:00:11 2012 -0700" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Sep 23 07:42:50 2012 -0700" }, "message": "rcu: Avoid rcu_print_detail_task_stall_rnp() segfault\n\nThe rcu_print_detail_task_stall_rnp() function invokes\nrcu_preempt_blocked_readers_cgp() to verify that there are some preempted\nRCU readers blocking the current grace period outside of the protection\nof the rcu_node structure\u0027s -\u003elock. This means that the last blocked\nreader might exit its RCU read-side critical section and remove itself\nfrom the -\u003eblkd_tasks list before the -\u003elock is acquired, resulting in\na segmentation fault when the subsequent code attempts to dereference\nthe now-NULL gp_tasks pointer.\n\nThis commit therefore moves the test under the lock. This will not\nhave measurable effect on lock contention because this code is invoked\nonly when printing RCU CPU stall warnings, in other words, in the common\ncase, never.\n\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\n" }, { "commit": "115f7a7ca0d412aab81acaaaa95eb1ab1c622e2f", "tree": "03efa7f9a3f796c88af60a8bf2cc7cdf2885000b", "parents": [ "b065a85354239cc96295f696eeace67ad3a55e5c" ], "author": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Fri Aug 10 13:55:03 2012 -0700" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Sep 23 07:42:50 2012 -0700" }, "message": "rcu: Apply for_each_rcu_flavor() to increment_cpu_stall_ticks()\n\nThe increment_cpu_stall_ticks() function listed each RCU flavor\nexplicitly, with an ifdef to handle preemptible RCU. This commit\ntherefore applies for_each_rcu_flavor() to save a line of code.\n\nBecause this commit switches from a code-based enumeration of the\nflavors of RCU to an rcu_state-list-based enumeration, it is no longer\npossible to apply __get_cpu_var() to the per-CPU rcu_data structures.\nWe instead use __this_cpu_var() on the rcu_state structure\u0027s -\u003erda field\nthat references the corresponding rcu_data structures.\n\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\n" }, { "commit": "b065a85354239cc96295f696eeace67ad3a55e5c", "tree": "3f1d429c803ddf21c8bc0583711ba0d9e3ee4fab", "parents": [ "a82dcc76021e22c174ba85d90b7a8c750b7362d0" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Wed Aug 01 15:57:54 2012 -0700" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Sep 23 07:42:50 2012 -0700" }, "message": "rcu: Fix obsolete rcu_initiate_boost() header comment\n\nCommit 1217ed1b (rcu: permit rcu_read_unlock() to be called while holding\nrunqueue locks) made rcu_initiate_boost() restore irq state when releasing\nthe rcu_node structure\u0027s -\u003elock, but failed to update the header comment\naccordingly. This commit therefore brings the header comment up to date.\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n" }, { "commit": "a82dcc76021e22c174ba85d90b7a8c750b7362d0", "tree": "f65ef1af700610b9e3e59545d2bf13e4cac33876", "parents": [ "5cc900cf55fe58aaad93767c5a526e2a69cbcbc6" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Wed Aug 01 14:29:20 2012 -0700" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Sep 23 07:42:50 2012 -0700" }, "message": "rcu: Make offline-CPU checking allow for indefinite delays\n\nThe rcu_implicit_offline_qs() function implicitly assumed that execution\nwould progress predictably when interrupts are disabled, which is of course\nnot guaranteed when running on a hypervisor. Furthermore, this function\nis short, and is called from one place only in a short function.\n\nThis commit therefore ensures that the timing is checked before\nchecking the condition, which guarantees correct behavior even given\nindefinite delays. It also inlines rcu_implicit_offline_qs() into\nrcu_implicit_dynticks_qs().\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n" }, { "commit": "5cc900cf55fe58aaad93767c5a526e2a69cbcbc6", "tree": "d6eb08a2df0797927d5288e2fa0ba9f2b8b1d4b6", "parents": [ "b4270ee356e5ecef5394ab80c0a0301c1676b7f0" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Tue Jul 31 14:09:49 2012 -0700" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Sep 23 07:42:50 2012 -0700" }, "message": "rcu: Improve boost selection when moving tasks to root rcu_node\n\nThe rcu_preempt_offline_tasks() moves all tasks queued on a given leaf\nrcu_node structure to the root rcu_node, which is done when the last CPU\ncorresponding the the leaf rcu_node structure goes offline. Now that\nRCU-preempt\u0027s synchronize_rcu_expedited() implementation blocks CPU-hotplug\noperations during the initialization of each rcu_node structure\u0027s\n-\u003eboost_tasks pointer, rcu_preempt_offline_tasks() can do a better job\nof setting the root rcu_node\u0027s -\u003eboost_tasks pointer.\n\nThe key point is that rcu_preempt_offline_tasks() runs as part of the\nCPU-hotplug process, so that a concurrent synchronize_rcu_expedited()\nis guaranteed to either have not started on the one hand (in which case\nthere is no boosting on behalf of the expedited grace period) or to be\ncompletely initialized on the other (in which case, in the absence of\nother priority boosting, all -\u003eboost_tasks pointers will be initialized).\nTherefore, if rcu_preempt_offline_tasks() finds that the -\u003eboost_tasks\npointer is equal to the -\u003eexp_tasks pointer, it can be sure that it is\ncorrectly placed.\n\nIn the case where there was boosting ongoing at the time that the\nsynchronize_rcu_expedited() function started, different nodes might start\nboosting the tasks blocking the expedited grace period at different times.\nIn this mixed case, the root node will either be boosting tasks for\nthe expedited grace period already, or it will start as soon as it gets\ndone boosting for the normal grace period -- but in this latter case,\nthe root node\u0027s tasks needed to be boosted in any case.\n\nThis commit therefore adds a check of the -\u003eboost_tasks pointer against\nthe -\u003eexp_tasks pointer to the list that prevents updating -\u003eboost_tasks.\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n" }, { "commit": "b4270ee356e5ecef5394ab80c0a0301c1676b7f0", "tree": "d600c6dcea20363414220b9b369832af97a8a090", "parents": [ "1e3fd2b38cea41f5386bf23440f2cbdd74cf13d0" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Tue Jul 31 10:12:48 2012 -0700" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Sep 23 07:42:49 2012 -0700" }, "message": "rcu: Permit RCU_NONIDLE() to be used from interrupt context\n\nThere is a need to use RCU from interrupt context, but either before\nrcu_irq_enter() is called or after rcu_irq_exit() is called. If the\ninterrupt occurs from idle, then lockdep-RCU will complain about such\nuses, as they appear to be illegal uses of RCU from the idle loop.\nIn other environments, RCU_NONIDLE() could be used to properly protect\nthe use of RCU, but RCU_NONIDLE() currently cannot be invoked except\nfrom process context.\n\nThis commit therefore modifies RCU_NONIDLE() to permit its use more\nglobally.\n\nReported-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\n" }, { "commit": "1e3fd2b38cea41f5386bf23440f2cbdd74cf13d0", "tree": "0323ed32ad7616b328d49d1f0a934278988ca5a4", "parents": [ "818615c4cde2a71a5857007b134cce89d506cc3f" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Fri Jul 27 13:41:47 2012 -0700" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Sep 23 07:42:49 2012 -0700" }, "message": "rcu: Properly initialize -\u003eboost_tasks on CPU offline\n\nWhen rcu_preempt_offline_tasks() clears tasks from a leaf rcu_node\nstructure, it does not NULL out the structure\u0027s -\u003eboost_tasks field.\nThis commit therefore fixes this issue.\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n" }, { "commit": "818615c4cde2a71a5857007b134cce89d506cc3f", "tree": "71204f4c20bac45df7875169d9baaa3953c0aec6", "parents": [ "e3ebfb96f396731ca2d0b108785d5da31b53ab00" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Wed Jul 11 00:24:57 2012 -0700" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Sep 23 07:42:49 2012 -0700" }, "message": "rcu: Pull TINY_RCU dyntick-idle tracing into non-idle region\n\nBecause TINY_RCU\u0027s idle detection keys directly off of the nesting\nlevel, rather than from a separate variable as in TREE_RCU, the\nTINY_RCU dyntick-idle tracing on transition to idle must happen\nbefore the change to the nesting level. This commit therefore makes\nthis change by passing the desired new value (rather than the old value)\nof the nesting level in to rcu_idle_enter_common().\n\n[ paulmck: Add fix for wrong-variable bug spotted by\n Michael Wang \u003cwangyun@linux.vnet.ibm.com\u003e. ]\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n" }, { "commit": "e3ebfb96f396731ca2d0b108785d5da31b53ab00", "tree": "7bac429c3cad5f00894746270322d5a4119cea47", "parents": [ "a10d206ef1a83121ab7430cb196e0376a7145b22" ], "author": { "name": "Paul E. McKenney", "email": "paul.mckenney@linaro.org", "time": "Mon Jul 02 14:42:01 2012 -0700" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Sep 23 07:42:49 2012 -0700" }, "message": "rcu: Add PROVE_RCU_DELAY to provoke difficult races\n\nThere have been some recent bugs that were triggered only when\npreemptible RCU\u0027s __rcu_read_unlock() was preempted just after setting\n-\u003ercu_read_lock_nesting to INT_MIN, which is a low-probability event.\nTherefore, reproducing those bugs (to say nothing of gaining confidence\nin alleged fixes) was quite difficult. This commit therefore creates\na new debug-only RCU kernel config option that forces a short delay\nin __rcu_read_unlock() to increase the probability of those sorts of\nbugs occurring.\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nReviewed-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\n" } ], "next": "60f53782c51f27c695840ce90c6c432284319eef" }