)]}' { "log": [ { "commit": "e3c8ca8336707062f3f7cb1cd7e6b3c753baccdd", "tree": "281917ab686d2e2a9e1a3996f729fbe97037de97", "parents": [ "01fad98a1f1d3b38adcbab4bd97f7f4cb983ffb5" ], "author": { "name": "Nathan Lynch", "email": "ntl@pobox.com", "time": "Wed Apr 08 19:45:12 2009 -0500" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Apr 09 07:37:02 2009 +0200" }, "message": "sched: do not count frozen tasks toward load\n\nFreezing tasks via the cgroup freezer causes the load average to climb\nbecause the freezer\u0027s current implementation puts frozen tasks in\nuninterruptible sleep (D state).\n\nSome applications which perform job-scheduling functions consult the\nload average when making decisions. If a cgroup is frozen, the load\naverage does not provide a useful measure of the system\u0027s utilization\nto such applications. This is especially inconvenient if the job\nscheduler employs the cgroup freezer as a mechanism for preempting low\npriority jobs. Contrast this with using SIGSTOP for the same purpose:\nthe stopped tasks do not count toward system load.\n\nChange task_contributes_to_load() to return false if the task is\nfrozen. This results in /proc/loadavg behavior that better meets\nusers\u0027 expectations.\n\nSigned-off-by: Nathan Lynch \u003cntl@pobox.com\u003e\nAcked-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nAcked-by: Nigel Cunningham \u003cnigel@tuxonice.net\u003e\nTested-by: Nigel Cunningham \u003cnigel@tuxonice.net\u003e\nCc: \u003cstable@kernel.org\u003e\nCc: containers@lists.linux-foundation.org\nCc: linux-pm@lists.linux-foundation.org\nCc: Matt Helsley \u003cmatthltc@us.ibm.com\u003e\nLKML-Reference: \u003c20090408194512.47a99b95@manatee.lan\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "1551260d1f0fb1d23f264582092b862fce5e2dbd", "tree": "d06a0d20c74adda44a78bc2dc9a3e3016de380d6", "parents": [ "c93f216b5b985a12a18323e5ca2eb01db3d2f000", "5e34437840d33554f69380584311743b39e8fbeb" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Apr 07 14:11:07 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Apr 07 14:11:07 2009 -0700" }, "message": "Merge branch \u0027core/softlockup\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027core/softlockup\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n softlockup: make DETECT_HUNG_TASK default depend on DETECT_SOFTLOCKUP\n softlockup: move \u0027one\u0027 to the softlockup section in sysctl.c\n softlockup: ensure the task has been switched out once\n softlockup: remove timestamp checking from hung_task\n softlockup: convert read_lock in hung_task to rcu_read_lock\n softlockup: check all tasks in hung_task\n softlockup: remove unused definition for spawn_softlockup_task\n softlockup: fix potential race in hung_task when resetting timeout\n softlockup: fix to allow compiling with !DETECT_HUNG_TASK\n softlockup: decouple hung tasks check from softlockup detection\n" }, { "commit": "5e34437840d33554f69380584311743b39e8fbeb", "tree": "e081135619ee146af5efb9ee883afca950df5757", "parents": [ "77d05632baee21b1cef8730d7c06aa69601e4dca", "d508afb437daee7cf07da085b635c44a4ebf9b38" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Apr 07 11:15:40 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Apr 07 11:15:40 2009 +0200" }, "message": "Merge branch \u0027linus\u0027 into core/softlockup\n\nConflicts:\n\tkernel/sysctl.c\n" }, { "commit": "9efe21cb82b5dbe3b0b2ae4de4eccc64ecb94e95", "tree": "7ff8833745d2f268f897f6fa4a27263b4a572245", "parents": [ "de18836e447c2dc30120c0919b8db8ddc0401cc4", "0221c81b1b8eb0cbb6b30a0ced52ead32d2b4e4c" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Apr 06 01:41:22 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Apr 06 01:41:22 2009 +0200" }, "message": "Merge branch \u0027linus\u0027 into irq/threaded\n\nConflicts:\n\tinclude/linux/irq.h\n\tkernel/irq/handle.c\n" }, { "commit": "714f83d5d9f7c785f622259dad1f4fad12d64664", "tree": "20563541ae438e11d686b4d629074eb002a481b7", "parents": [ "8901e7ffc2fa78ede7ce9826dbad68a3a25dc2dc", "645dae969c3b8651c5bc7c54a1835ec03820f85f" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Apr 05 11:04:19 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Apr 05 11:04:19 2009 -0700" }, "message": "Merge branch \u0027tracing-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027tracing-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (413 commits)\n tracing, net: fix net tree and tracing tree merge interaction\n tracing, powerpc: fix powerpc tree and tracing tree interaction\n ring-buffer: do not remove reader page from list on ring buffer free\n function-graph: allow unregistering twice\n trace: make argument \u0027mem\u0027 of trace_seq_putmem() const\n tracing: add missing \u0027extern\u0027 keywords to trace_output.h\n tracing: provide trace_seq_reserve()\n blktrace: print out BLK_TN_MESSAGE properly\n blktrace: extract duplidate code\n blktrace: fix memory leak when freeing struct blk_io_trace\n blktrace: fix blk_probes_ref chaos\n blktrace: make classic output more classic\n blktrace: fix off-by-one bug\n blktrace: fix the original blktrace\n blktrace: fix a race when creating blk_tree_root in debugfs\n blktrace: fix timestamp in binary output\n tracing, Text Edit Lock: cleanup\n tracing: filter fix for TRACE_EVENT_FORMAT events\n ftrace: Using FTRACE_WARN_ON() to check \"freed record\" in ftrace_release()\n x86: kretprobe-booster interrupt emulation code fix\n ...\n\nFix up trivial conflicts in\n arch/parisc/include/asm/ftrace.h\n include/linux/memory.h\n kernel/extable.c\n kernel/module.c\n" }, { "commit": "8fe74cf053de7ad2124a894996f84fa890a81093", "tree": "77dcd8fbf33ce53a3821942233962fb28c6f2848", "parents": [ "c2eb2fa6d2b6fe122d3479ec5b28d978418b2698", "ced117c73edc917e96dea7cca98c91383f0792f7" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Apr 02 21:09:10 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Apr 02 21:09:10 2009 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:\n Remove two unneeded exports and make two symbols static in fs/mpage.c\n Cleanup after commit 585d3bc06f4ca57f975a5a1f698f65a45ea66225\n Trim includes of fdtable.h\n Don\u0027t crap into descriptor table in binfmt_som\n Trim includes in binfmt_elf\n Don\u0027t mess with descriptor table in load_elf_binary()\n Get rid of indirect include of fs_struct.h\n New helper - current_umask()\n check_unsafe_exec() doesn\u0027t care about signal handlers sharing\n New locking/refcounting for fs_struct\n Take fs_struct handling to new file (fs/fs_struct.c)\n Get rid of bumping fs_struct refcount in pivot_root(2)\n Kill unsharing fs_struct in __set_personality()\n" }, { "commit": "1b0f7ffd0ea27cd3a0b9ca04e3df9522048c32a3", "tree": "a8c27acdf95f55f93fe86661c6cba4cd36c8e4f1", "parents": [ "52ee2dfdd4f51cf422ea6a96a0846dc94244aa37" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Thu Apr 02 16:58:39 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Apr 02 19:05:02 2009 -0700" }, "message": "pids: kill signal_struct-\u003e __pgrp/__session and friends\n\nWe are wasting 2 words in signal_struct without any reason to implement\ntask_pgrp_nr() and task_session_nr().\n\ntask_session_nr() has no callers since\n2e2ba22ea4fd4bb85f0fa37c521066db6775cbef, we can remove it.\n\ntask_pgrp_nr() is still (I believe wrongly) used in fs/autofsX and\nfs/coda.\n\nThis patch reimplements task_pgrp_nr() via task_pgrp_nr_ns(), and kills\n__pgrp/__session and the related helpers.\n\nThe change in drivers/char/tty_io.c is cosmetic, but hopefully makes sense\nanyway.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nAcked-by: Alan Cox \u003cnumber6@the-village.bc.nu\u003e\t\t[tty parts]\nCc: Cedric Le Goater \u003cclg@fr.ibm.com\u003e\nCc: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nCc: Eric Biederman \u003cebiederm@xmission.com\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nCc: Serge Hallyn \u003cserue@us.ibm.com\u003e\nCc: Sukadev Bhattiprolu \u003csukadev@linux.vnet.ibm.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "52ee2dfdd4f51cf422ea6a96a0846dc94244aa37", "tree": "e15753e01d2c2fbe980edc45f78a9ae77d2cf891", "parents": [ "2ae448efc87df6d328f5835969076c7f9fce59c3" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Thu Apr 02 16:58:38 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Apr 02 19:05:02 2009 -0700" }, "message": "pids: refactor vnr/nr_ns helpers to make them safe\n\nInho, the safety rules for vnr/nr_ns helpers are horrible and buggy.\n\ntask_pid_nr_ns(task) needs rcu/tasklist depending on task \u003d\u003d current.\n\nAs for \"special\" pids, vnr/nr_ns helpers always need rcu. However, if\ntask !\u003d current, they are unsafe even under rcu lock, we can\u0027t trust\ntask-\u003egroup_leader without the special checks.\n\nAnd almost every helper has a callsite which needs a fix.\n\nAlso, it is a bit annoying that the implementations of, say,\ntask_pgrp_vnr() and task_pgrp_nr_ns() are not \"symmetrical\".\n\nThis patch introduces the new helper, __task_pid_nr_ns(), which is always\nsafe to use, and turns all other helpers into the trivial wrappers.\n\nAfter this I\u0027ll send another patch which converts task_tgid_xxx() as well,\nthey\u0027re are a bit special.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Louis Rilling \u003cLouis.Rilling@kerlabs.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nCc: Sukadev Bhattiprolu \u003csukadev@linux.vnet.ibm.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6dda81f4384b94930826eded254d8c16f89a9248", "tree": "a7b27ca16a6feba637cb01e68b54c58b6ca07bc2", "parents": [ "8e654fba4a376f436bdfe361fc5cdbc87ac09b35" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Thu Apr 02 16:58:35 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Apr 02 19:05:02 2009 -0700" }, "message": "pids: document task_pgrp/task_session is not safe without tasklist/rcu\n\nEven if task \u003d\u003d current, it is not safe to dereference the result of\ntask_pgrp/task_session. We can race with another thread which changes the\nspecial pid via setpgid/setsid.\n\nDocument this. The next 2 patches give an example of the unsafe usage, we\nhave more bad users.\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Louis Rilling \u003cLouis.Rilling@kerlabs.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nCc: Sukadev Bhattiprolu \u003csukadev@linux.vnet.ibm.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "39c626ae47c469abdfd30c6e42eff884931380d6", "tree": "58cbe75bac79ce8ef55c94189df26448d0283918", "parents": [ "7f5d3652d469cdf9eb2365dfea7ce3fb9e1409cc" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Thu Apr 02 16:58:18 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Apr 02 19:05:00 2009 -0700" }, "message": "forget_original_parent: split out the un-ptrace part\n\nBy discussion with Roland.\n\n- Rename ptrace_exit() to exit_ptrace(), and change it to do all the\n necessary work with -\u003eptraced list by its own.\n\n- Move this code from exit.c to ptrace.c\n\n- Update the comment in ptrace_detach() to explain the rechecking of\n the child-\u003eptrace.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: \"Metzger, Markus T\" \u003cmarkus.t.metzger@intel.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6f2c55b843836d26528c56a0968689accaedbc67", "tree": "17501e29d4b6ef3eb85da9a5d6ad3df7f19ec6a2", "parents": [ "14dd1ff0f9e75dd4ae2f1ff8e48becb76d14f4ab" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Thu Apr 02 16:56:59 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Apr 02 19:04:51 2009 -0700" }, "message": "Simplify copy_thread()\n\nFirst argument unused since 2.3.11.\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: \u003clinux-arch@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": "8302294f43250dc337108c51882a6007f2b1e2e0", "tree": "85acd4440799c46a372df9cad170fa0c21e59096", "parents": [ "4fe70410d9a219dabb47328effccae7e7f2a6e26", "2e572895bf3203e881356a4039ab0fa428ed2639" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Apr 01 21:54:19 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Apr 02 00:49:02 2009 +0200" }, "message": "Merge branch \u0027tracing/core-v2\u0027 into tracing-for-linus\n\nConflicts:\n\tinclude/linux/slub_def.h\n\tlib/Kconfig.debug\n\tmm/slob.c\n\tmm/slub.c\n" }, { "commit": "9de1581e75ba9d7979766d4ab6d56f0f2d87f7c6", "tree": "da6854544454f7f6184e6cd54c8b4e88bfc3543a", "parents": [ "a12888f772dab4bf5e6f73668dc4f5f6026a7014" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Tue Mar 31 15:19:29 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Apr 01 08:59:11 2009 -0700" }, "message": "get_mm_hiwater_xxx: trivial, s/define/inline/\n\nAndrew pointed out get_mm_hiwater_xxx() evaluate \"mm\" argument thrice/twice,\nmake them inline.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nReviewed-by: 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": "5ad4e53bd5406ee214ddc5a41f03f779b8b2d526", "tree": "b3dab5140284b3edf02bf2b13f74bfddb25aa62a", "parents": [ "ce3b0f8d5c2203301fc87f3aaaed73e5819e2a48" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sun Mar 29 19:50:06 2009 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Mar 31 23:00:27 2009 -0400" }, "message": "Get rid of indirect include of fs_struct.h\n\nDon\u0027t pull it in sched.h; very few files actually need it and those\ncan include directly. sched.h itself only needs forward declaration\nof struct fs_struct;\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "c4e1aa67ed9e4e542a064bc271ddbf152b677e91", "tree": "2a2ca00bed0fc22b4eb83db092c9178868d8f76b", "parents": [ "cf2f7d7c90279cdbc12429de278f3d27ac2050ae", "2f8501815256af8498904e68bd0984b1afffd6f8" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Mar 30 17:17:35 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Mar 30 17:17:35 2009 -0700" }, "message": "Merge branch \u0027locking-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027locking-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (33 commits)\n lockdep: fix deadlock in lockdep_trace_alloc\n lockdep: annotate reclaim context (__GFP_NOFS), fix SLOB\n lockdep: annotate reclaim context (__GFP_NOFS), fix\n lockdep: build fix for !PROVE_LOCKING\n lockstat: warn about disabled lock debugging\n lockdep: use stringify.h\n lockdep: simplify check_prev_add_irq()\n lockdep: get_user_chars() redo\n lockdep: simplify get_user_chars()\n lockdep: add comments to mark_lock_irq()\n lockdep: remove macro usage from mark_held_locks()\n lockdep: fully reduce mark_lock_irq()\n lockdep: merge the !_READ mark_lock_irq() helpers\n lockdep: merge the _READ mark_lock_irq() helpers\n lockdep: simplify mark_lock_irq() helpers #3\n lockdep: further simplify mark_lock_irq() helpers\n lockdep: simplify the mark_lock_irq() helpers\n lockdep: split up mark_lock_irq()\n lockdep: generate usage strings\n lockdep: generate the state bit definitions\n ...\n" }, { "commit": "6e15cf04860074ad032e88c306bea656bbdd0f22", "tree": "c346383bb7563e8d66b2f4a502f875b259c34870", "parents": [ "be0ea69674ed95e1e98cb3687a241badc756d228", "60db56422043aaa455ac7f858ce23c273220f9d9" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Mar 26 21:39:17 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 27 17:28:43 2009 +0100" }, "message": "Merge branch \u0027core/percpu\u0027 into percpu-cpumask-x86-for-linus-2\n\nConflicts:\n\tarch/parisc/kernel/irq.c\n\tarch/x86/include/asm/fixmap_64.h\n\tarch/x86/include/asm/setup.h\n\tkernel/irq/handle.c\n\nSemantic merge:\n arch/x86/include/asm/fixmap.h\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "831576fe40f4175e0767623cffa4aeb28157943a", "tree": "de54e628e5849d6cf201df4446d760d17f752326", "parents": [ "21cdbc1378e8aa96e1ed4a606dce1a8e7daf7fdf", "66fef08f7d5267b2312c4b48a6d2957d2d414105" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Mar 26 16:05:01 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Mar 26 16:05:01 2009 -0700" }, "message": "Merge branch \u0027sched-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027sched-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (46 commits)\n sched: Add comments to find_busiest_group() function\n sched: Refactor the power savings balance code\n sched: Optimize the !power_savings_balance during fbg()\n sched: Create a helper function to calculate imbalance\n sched: Create helper to calculate small_imbalance in fbg()\n sched: Create a helper function to calculate sched_domain stats for fbg()\n sched: Define structure to store the sched_domain statistics for fbg()\n sched: Create a helper function to calculate sched_group stats for fbg()\n sched: Define structure to store the sched_group statistics for fbg()\n sched: Fix indentations in find_busiest_group() using gotos\n sched: Simple helper functions for find_busiest_group()\n sched: remove unused fields from struct rq\n sched: jiffies not printed per CPU\n sched: small optimisation of can_migrate_task()\n sched: fix typos in documentation\n sched: add avg_overlap decay\n x86, sched_clock(): mark variables read-mostly\n sched: optimize ttwu vs group scheduling\n sched: TIF_NEED_RESCHED -\u003e need_reshed() cleanup\n sched: don\u0027t rebalance if attached on NULL domain\n ...\n" }, { "commit": "8aef2d2856158a36c295a8d1288281e4839bff13", "tree": "eef85397dedcad001982724e0be2da6dc089b39f", "parents": [ "05ce5818adee8f8efd0a5ca0d900a6789012516b" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 24 01:10:15 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 24 09:33:30 2009 -0400" }, "message": "function-graph: ignore times across schedule\n\nImpact: more accurate timings\n\nThe current method of function graph tracing does not take into\naccount the time spent when a task is not running. This shows functions\nthat call schedule have increased costs:\n\n 3) + 18.664 us | }\n ------------------------------------------\n 3) \u003cidle\u003e-0 \u003d\u003e kblockd-123\n ------------------------------------------\n\n 3) | finish_task_switch() {\n 3) 1.441 us | _spin_unlock_irq();\n 3) 3.966 us | }\n 3) ! 2959.433 us | }\n 3) ! 2961.465 us | }\n\nThis patch uses the tracepoint in the scheduling context switch to\naccount for time that has elapsed while a task is scheduled out.\nNow we see:\n\n ------------------------------------------\n 3) \u003cidle\u003e-0 \u003d\u003e edac-po-1067\n ------------------------------------------\n\n 3) | finish_task_switch() {\n 3) 0.685 us | _spin_unlock_irq();\n 3) 2.331 us | }\n 3) + 41.439 us | }\n 3) + 42.663 us | }\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "3aa551c9b4c40018f0e261a178e3d25478dc04a9", "tree": "2a696109273fcc421d774cc8fefa4180331a85ad", "parents": [ "80c5520811d3805adcb15c570ea5e2d489fa5d0b" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Mar 23 18:28:15 2009 +0100" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Tue Mar 24 12:15:23 2009 +0100" }, "message": "genirq: add threaded interrupt handler support\n\nAdd support for threaded interrupt handlers:\n\nA device driver can request that its main interrupt handler runs in a\nthread. To achive this the device driver requests the interrupt with\nrequest_threaded_irq() and provides additionally to the handler a\nthread function. The handler function is called in hard interrupt\ncontext and needs to check whether the interrupt originated from the\ndevice. If the interrupt originated from the device then the handler\ncan either return IRQ_HANDLED or IRQ_WAKE_THREAD. IRQ_HANDLED is\nreturned when no further action is required. IRQ_WAKE_THREAD causes\nthe genirq code to invoke the threaded (main) handler. When\nIRQ_WAKE_THREAD is returned handler must have disabled the interrupt\non the device level. This is mandatory for shared interrupt handlers,\nbut we need to do it as well for obscure x86 hardware where disabling\nan interrupt on the IO_APIC level redirects the interrupt to the\nlegacy PIC interrupt lines.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nReviewed-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n\n" }, { "commit": "703a3cd72817e99201cef84a8a7aecc60b2b3581", "tree": "3e943755178ff410694722bb031f523136fbc432", "parents": [ "df7f54c012b92ec93d56b68547351dcdf8a163d3", "8e0ee43bc2c3e19db56a4adaa9a9b04ce885cd84" ], "author": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Tue Mar 24 10:52:46 2009 +1100" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Tue Mar 24 10:52:46 2009 +1100" }, "message": "Merge branch \u0027master\u0027 into next\n" }, { "commit": "17d85bc7564571a1cce23ffdb2d2a33301876925", "tree": "815bfc3a02e94303c7c834770bf2a17012c10bf8", "parents": [ "d95c3578120e5bc4784069439f00ccb1b5f87717", "041b62374c7fedc11a8a1eeda2868612d3d1436c" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 13 05:54:43 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 13 05:54:43 2009 +0100" }, "message": "Merge commit \u0027v2.6.29-rc8\u0027 into cpus4096\n" }, { "commit": "f6411fe7e09b67470a2569231d6fa566c7c29b8b", "tree": "f12d569c70ff937175eb5cde2195fccfe2fa34eb", "parents": [ "df1c99d416500da8d26a4d78777467c53ee7689e", "f24ade3a3332811a512ed3b6c6aa69486719b1d8", "9ead64974b05501bbac0d63a47c99fa786d064ba" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 13 04:50:44 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 13 04:50:44 2009 +0100" }, "message": "Merge branches \u0027sched/clock\u0027, \u0027sched/urgent\u0027 and \u0027linus\u0027 into sched/core\n" }, { "commit": "480c93df5b99699390f93a7024c9f60d09da0e96", "tree": "b93b6c8c71c5f2e716dd05b126e01ef4e20ff0af", "parents": [ "aecfcde920da8d32949f6cbbc1fc051b4ef9e7be", "d820ac4c2fa881079e6b689d2098adce337558ae" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 13 01:33:21 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 13 01:33:21 2009 +0100" }, "message": "Merge branch \u0027core/locking\u0027 into tracing/ftrace\n" }, { "commit": "3c1f67d60e2b4f4455563928999fd41cc653645d", "tree": "0d58c145a05fb09167f1ab6882b474eccb1f3563", "parents": [ "03d78913f01e8f6599823f00357ed17b32747d3d", "9ead64974b05501bbac0d63a47c99fa786d064ba" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 13 01:29:17 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 13 01:29:17 2009 +0100" }, "message": "Merge branch \u0027linus\u0027 into core/locking\n" }, { "commit": "76e6eee03353f01bfca707d4dbb1f10a4ee27dc0", "tree": "6b0378b1da6ae16e04d19f3c742b7863716b8e14", "parents": [ "99adcd9d67aaf04e28f5ae96df280f236bde4b66" ], "author": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Thu Mar 12 14:35:43 2009 -0600" }, "committer": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Thu Mar 12 14:35:44 2009 +1030" }, "message": "cpumask: tsk_cpumask for accessing the struct task_struct\u0027s cpus_allowed.\n\nThis allows us to change the representation (to a dangling bitmap or\ncpumask_var_t) without breaking all the callers: they can use\ntsk_cpumask() now and won\u0027t see a difference as the changes roll into\nlinux-next.\n\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\n" }, { "commit": "f0ef03985130287c6c84ebe69416cf790e6cc00e", "tree": "3ecb04cc4d82e5fc3ae5f1747e6da172ae8cbcb7", "parents": [ "16097439703bcd38e9fe5608c12add6dacb825ea", "31bbed527e7039203920c51c9fb48c27aed0820c" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 06 16:44:14 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 06 16:45:01 2009 +0100" }, "message": "Merge branch \u0027x86/core\u0027 into tracing/textedit\n\nConflicts:\n\tarch/x86/Kconfig\n\tblock/blktrace.c\n\tkernel/irq/handle.c\n\nSemantic conflict:\n\tkernel/trace/blktrace.c\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "a1413c89ae6a4b7a9a43f7768934a81ffb5c629a", "tree": "7e16be26407c5fd4dfbfeb98b11590809a963664", "parents": [ "f254f3909efaf59ca2d0f408de2d044dace60706", "dd4124a8a06bca89c077a16437edac010f0bb993" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Mar 05 21:48:31 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Mar 05 21:48:50 2009 +0100" }, "message": "Merge branch \u0027x86/urgent\u0027 into x86/core\n\nConflicts:\n\tarch/x86/include/asm/fixmap_64.h\nSemantic merge:\n\tarch/x86/include/asm/fixmap.h\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "a140feab42d1cfd811930ab76104559c19dfc4b0", "tree": "41fd871990e888dd5616a6bf1891a1ff307221df", "parents": [ "1075414b06109a99b0e87601e84c74a95bd45681", "fec6c6fec3e20637bee5d276fb61dd8b49a3f9cc" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Mar 05 11:45:22 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Mar 05 11:45:22 2009 +0100" }, "message": "Merge commit \u0027v2.6.29-rc7\u0027 into core/locking\n" }, { "commit": "28b1bd1cbc33cae95a309691d814399a69cf3070", "tree": "6474d10332662f5302be0df8527c9e9e31e32a95", "parents": [ "2602c3ba4508f528db024c1d209256513ea05de6", "1075414b06109a99b0e87601e84c74a95bd45681" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 04 18:49:19 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 04 18:49:19 2009 +0100" }, "message": "Merge branch \u0027core/locking\u0027 into tracing/ftrace\n" }, { "commit": "a1be621dfacbef0fd374d8acd553d71e07bf29ac", "tree": "32b0355454b43b1098b5e01dd699fd7281abf781", "parents": [ "3612fdf780e28b10323dd12d2b0f306c7ada4d4c", "fec6c6fec3e20637bee5d276fb61dd8b49a3f9cc" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 04 11:14:47 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 04 11:14:47 2009 +0100" }, "message": "Merge branch \u0027tracing/ftrace\u0027; commit \u0027v2.6.29-rc7\u0027 into tracing/core\n" }, { "commit": "5512b3ece0cbb5024b83099963222700aa45f59e", "tree": "24d60f354652f8b9ed5b0820aeb9da6add7be493", "parents": [ "c40c6f85a7594ad842233885386a0ca4cd40eafe", "8325d9c09dedf45476f4d6261d1b6a72e4a7453f", "54e991242850edc8c53f71fa5aa3ba7a93ce38f5", "778ef1e6cbb049c9bcbf405936ee6f2b6e451892" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Mar 02 12:02:36 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Mar 02 12:02:36 2009 +0100" }, "message": "Merge branches \u0027sched/clock\u0027, \u0027sched/urgent\u0027 and \u0027linus\u0027 into sched/core\n" }, { "commit": "54e991242850edc8c53f71fa5aa3ba7a93ce38f5", "tree": "7f136214aab690a8ee4a294ca9c1a7e01de0dc49", "parents": [ "cac64d00c256e65776d575e82aaf540632b66178" ], "author": { "name": "Dhaval Giani", "email": "dhaval@linux.vnet.ibm.com", "time": "Fri Feb 27 15:13:54 2009 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Feb 27 11:11:53 2009 +0100" }, "message": "sched: don\u0027t allow setuid to succeed if the user does not have rt bandwidth\n\nImpact: fix hung task with certain (non-default) rt-limit settings\n\nCorey Hickey reported that on using setuid to change the uid of a\nrt process, the process would be unkillable and not be running.\nThis is because there was no rt runtime for that user group. Add\nin a check to see if a user can attach an rt task to its task group.\nOn failure, return EINVAL, which is also returned in\nCONFIG_CGROUP_SCHED.\n\nReported-by: Corey Hickey \u003cbugfood-ml@fatooh.org\u003e\nSigned-off-by: Dhaval Giani \u003cdhaval@linux.vnet.ibm.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "1b49061d400c9e51e3ac2aac026a099fe599b9bb", "tree": "54c632cd7f0be2573897c1463a247e69fb769940", "parents": [ "14131f2f98ac350ee9e73faed916d2238a8b6a0d", "83ce400928680a6c8123d492684b27857f5a2d95" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Feb 26 21:21:59 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Feb 27 08:35:19 2009 +0100" }, "message": "Merge branch \u0027sched/clock\u0027 into tracing/ftrace\n\nConflicts:\n\tkernel/sched_clock.c\n" }, { "commit": "b342501cd31e5546d0c9ca8ceff5ded1832f9e5b", "tree": "3cd5778565a45a74e8ad0640093927a77d4d625e", "parents": [ "694593e3374a67d95ece6a275a1f181644c2c4d8" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Feb 26 20:20:29 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Feb 26 21:20:22 2009 +0100" }, "message": "sched: allow architectures to specify sched_clock_stable\n\nAllow CONFIG_HAVE_UNSTABLE_SCHED_CLOCK architectures to still specify\nthat their sched_clock() implementation is reliable.\n\nThis will be used by x86 to switch on a faster sched_clock_cpu()\nimplementation on certain CPU types.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "5274f8354d6a1ed9d6688e6a89b705b94aa1b6e9", "tree": "a40ae6f754648311b27811acbbd7af61cc65eab0", "parents": [ "ad0b0fd554dfc126b5750d14908dccc3bbf602be", "a0490fa35dc0022ef95f64802e8edf18c411c790", "d2f8d7ee1a9b4650b4e43325b321801264f7c37a" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Feb 15 21:15:16 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Feb 15 21:15:16 2009 +0100" }, "message": "Merge branch \u0027sched/urgent\u0027; commit \u0027v2.6.29-rc5\u0027 into sched/core\n" }, { "commit": "cf40bd16fdad42c053040bcd3988f5fdedbb6c57", "tree": "d97ab25726981712be806d77650b7f65167cfc88", "parents": [ "6f2b9b9a9d750a9175dc79c74bfed5add840983c" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Wed Jan 21 08:12:39 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Feb 14 23:27:49 2009 +0100" }, "message": "lockdep: annotate reclaim context (__GFP_NOFS)\n\nHere is another version, with the incremental patch rolled up, and\nadded reclaim context annotation to kswapd, and allocation tracing\nto slab allocators (which may only ever reach the page allocator\nin rare cases, so it is good to put annotations here too).\n\nHaven\u0027t tested this version as such, but it should be getting closer\nto merge worthy ;)\n\n--\nAfter noticing some code in mm/filemap.c accidentally perform a __GFP_FS\nallocation when it should not have been, I thought it might be a good idea to\ntry to catch this kind of thing with lockdep.\n\nI coded up a little idea that seems to work. Unfortunately the system has to\nactually be in __GFP_FS page reclaim, then take the lock, before it will mark\nit. But at least that might still be some orders of magnitude more common\n(and more debuggable) than an actual deadlock condition, so we have some\nimprovement I hope (the concept is no less complete than discovery of a lock\u0027s\ninterrupt contexts).\n\nI guess we could even do the same thing with __GFP_IO (normal reclaim), and\neven GFP_NOIO locks too... but filesystems will have the most locks and fiddly\ncode paths, so let\u0027s start there and see how it goes.\n\nIt *seems* to work. I did a quick test.\n\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n[ INFO: inconsistent lock state ]\n2.6.28-rc6-00007-ged31348-dirty #26\n---------------------------------\ninconsistent {in-reclaim-W} -\u003e {ov-reclaim-W} usage.\nmodprobe/8526 [HC0[0]:SC0[0]:HE1:SE1] takes:\n (testlock){--..}, at: [\u003cffffffffa0020055\u003e] brd_init+0x55/0x216 [brd]\n{in-reclaim-W} state was registered at:\n [\u003cffffffff80267bdb\u003e] __lock_acquire+0x75b/0x1a60\n [\u003cffffffff80268f71\u003e] lock_acquire+0x91/0xc0\n [\u003cffffffff8070f0e1\u003e] mutex_lock_nested+0xb1/0x310\n [\u003cffffffffa002002b\u003e] brd_init+0x2b/0x216 [brd]\n [\u003cffffffff8020903b\u003e] _stext+0x3b/0x170\n [\u003cffffffff80272ebf\u003e] sys_init_module+0xaf/0x1e0\n [\u003cffffffff8020c3fb\u003e] system_call_fastpath+0x16/0x1b\n [\u003cffffffffffffffff\u003e] 0xffffffffffffffff\nirq event stamp: 3929\nhardirqs last enabled at (3929): [\u003cffffffff8070f2b5\u003e] mutex_lock_nested+0x285/0x310\nhardirqs last disabled at (3928): [\u003cffffffff8070f089\u003e] mutex_lock_nested+0x59/0x310\nsoftirqs last enabled at (3732): [\u003cffffffff8061f623\u003e] sk_filter+0x83/0xe0\nsoftirqs last disabled at (3730): [\u003cffffffff8061f5b6\u003e] sk_filter+0x16/0xe0\n\nother info that might help us debug this:\n1 lock held by modprobe/8526:\n #0: (testlock){--..}, at: [\u003cffffffffa0020055\u003e] brd_init+0x55/0x216 [brd]\n\nstack backtrace:\nPid: 8526, comm: modprobe Not tainted 2.6.28-rc6-00007-ged31348-dirty #26\nCall Trace:\n [\u003cffffffff80265483\u003e] print_usage_bug+0x193/0x1d0\n [\u003cffffffff80266530\u003e] mark_lock+0xaf0/0xca0\n [\u003cffffffff80266735\u003e] mark_held_locks+0x55/0xc0\n [\u003cffffffffa0020000\u003e] ? brd_init+0x0/0x216 [brd]\n [\u003cffffffff802667ca\u003e] trace_reclaim_fs+0x2a/0x60\n [\u003cffffffff80285005\u003e] __alloc_pages_internal+0x475/0x580\n [\u003cffffffff8070f29e\u003e] ? mutex_lock_nested+0x26e/0x310\n [\u003cffffffffa0020000\u003e] ? brd_init+0x0/0x216 [brd]\n [\u003cffffffffa002006a\u003e] brd_init+0x6a/0x216 [brd]\n [\u003cffffffffa0020000\u003e] ? brd_init+0x0/0x216 [brd]\n [\u003cffffffff8020903b\u003e] _stext+0x3b/0x170\n [\u003cffffffff8070f8b9\u003e] ? mutex_unlock+0x9/0x10\n [\u003cffffffff8070f83d\u003e] ? __mutex_unlock_slowpath+0x10d/0x180\n [\u003cffffffff802669ec\u003e] ? trace_hardirqs_on_caller+0x12c/0x190\n [\u003cffffffff80272ebf\u003e] sys_init_module+0xaf/0x1e0\n [\u003cffffffff8020c3fb\u003e] system_call_fastpath+0x16/0x1b\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "1c511f740fe7031867f51831854360e8be1ba34c", "tree": "bd678fbc8117f751a3d1f8dc93b91c215ceaf66f", "parents": [ "e7669b8e329255bbcb40af65b38e342825d97a46", "00f62f614bb713027b9296068d1879fbca511eb7", "b22f4858126a6aa852ad745b94f6b25dbdea708e", "071a0bc2ceace31266836801510879407a3701fa" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Feb 13 10:25:18 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Feb 13 10:25:18 2009 +0100" }, "message": "Merge branches \u0027tracing/ftrace\u0027, \u0027tracing/ring-buffer\u0027, \u0027tracing/sysprof\u0027, \u0027tracing/urgent\u0027 and \u0027linus\u0027 into tracing/core\n" }, { "commit": "f8a6b2b9cee298a9663cbe38ce1eb5240987cb62", "tree": "b356490269c9e77d164dcc1477792b882fbb8bdb", "parents": [ "ba1511bf7fbda452138e4096bf10d5a382710f4f", "071a0bc2ceace31266836801510879407a3701fa" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Feb 13 09:44:22 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Feb 13 09:44:22 2009 +0100" }, "message": "Merge branch \u0027linus\u0027 into x86/apic\n\nConflicts:\n\tarch/x86/kernel/acpi/boot.c\n\tarch/x86/mm/fault.c\n" }, { "commit": "871cafcc962fa1655c44b4f0e54d4c5cc14e273c", "tree": "fdb7bc65d2606c85b7be6c33ba0dfd5b4e472245", "parents": [ "cf2592f59c0e8ed4308adbdb2e0a88655379d579", "b578f3fcca1e78624dfb5f358776e63711d7fda2" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Feb 12 13:08:57 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Feb 12 13:08:57 2009 +0100" }, "message": "Merge branch \u0027linus\u0027 into core/softlockup\n" }, { "commit": "f9ce1f1cda8b73a36f47e424975a9dfa78b7840c", "tree": "66138b33dbf627f99f5ec67e0e39ce15ab830080", "parents": [ "523979adfa0b79d4e3aa053220c37a9233294206" ], "author": { "name": "Kentaro Takeda", "email": "takedakn@nttdata.co.jp", "time": "Thu Feb 05 17:18:11 2009 +0900" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Thu Feb 12 15:15:03 2009 +1100" }, "message": "Add in_execve flag into task_struct.\n\nThis patch allows LSM modules to determine whether current process is in an\nexecve operation or not so that they can behave differently while an execve\noperation is in progress.\n\nThis patch is needed by TOMOYO. Please see another patch titled \"LSM adapter\nfunctions.\" for backgrounds.\n\nSigned-off-by: Tetsuo Handa \u003cpenguin-kernel@I-love.SAKURA.ne.jp\u003e\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "4da94d49b2ecb0a26e716a8811c3ecc542c2a65d", "tree": "a87980822b2499021f080c2b0235f441b30413cc", "parents": [ "3fccfd67df79c6351a156eb25a7a514e5f39c4d9" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Wed Feb 11 11:30:27 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Feb 11 14:04:21 2009 +0100" }, "message": "timers: fix TIMER_ABSTIME for process wide cpu timers\n\nThe POSIX timer interface allows for absolute time expiry values through the\nTIMER_ABSTIME flag, therefore we have to synchronize the timer to the clock\nevery time we start it.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "3fccfd67df79c6351a156eb25a7a514e5f39c4d9", "tree": "de4776e69e197119ac64097f3ff6239a55ad77be", "parents": [ "ff08f76d738d0ec0f334b187f61e160caa321d54" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Tue Feb 10 16:37:31 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Feb 11 14:04:19 2009 +0100" }, "message": "timers: split process wide cpu clocks/timers, fix\n\nTo decrease the chance of a missed enable, always enable the timer when we\nsample it, we\u0027ll always disable it when we find that there are no active timers\nin the jiffy tick.\n\nThis fixes a flood of warnings reported by Mike Galbraith.\n\nReported-by: Mike Galbraith \u003cefault@gmx.de\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "17406b82d621930cca8ccc1272cdac9a7dae8e40", "tree": "224c8b0b7c78a5467175fe10e116bdc6b73495ea", "parents": [ "94be52dc075a32af4aa73d7e10f68734d62d6af2" ], "author": { "name": "Mandeep Singh Baines", "email": "msb@google.com", "time": "Fri Feb 06 15:37:47 2009 -0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Feb 09 11:03:49 2009 +0100" }, "message": "softlockup: remove timestamp checking from hung_task\n\nImpact: saves sizeof(long) bytes per task_struct\n\nBy guaranteeing that sysctl_hung_task_timeout_secs have elapsed between\ntasklist scans we can avoid using timestamps.\n\nSigned-off-by: Mandeep Singh Baines \u003cmsb@google.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "4ad476e11f94fd3724c6e272d8220e99cd222b27", "tree": "a8684d4ecbfe1d2b2b1e29ed74de65394ad21b43", "parents": [ "304cc6ae1bf7a8e6d00053fbe0b7e2b26cdddda2", "8e4921515c1a379539607eb443d51c30f4f7f338" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Feb 09 10:32:48 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Feb 09 10:32:48 2009 +0100" }, "message": "Merge commit \u0027v2.6.29-rc4\u0027 into tracing/core\n" }, { "commit": "140573d33b703194b7e1893711e78b7f546cca7c", "tree": "8e215102e7c5222013df84ceed8b961728d2db91", "parents": [ "34cb61359b503d7aff6447acb037a5efd6ce93b2", "ceacc2c1c85ac498ca4cf297bdfe5b4aaa9fd0e0", "483b4ee60edbefdfbff0dd538fb81f368d9e7c0d" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Feb 08 20:12:46 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Feb 08 20:12:46 2009 +0100" }, "message": "Merge branches \u0027sched/rt\u0027 and \u0027sched/urgent\u0027 into sched/core\n" }, { "commit": "673f8205914a12e928c65afbcd78ae748f78df53", "tree": "38c60215646d079fab3bff812e094e914960c7ec", "parents": [ "cf47b8f3d96b0b8b10b557444a28b3ca4024ff82", "ae1a25da8448271a99745da03100d5299575a269" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Feb 07 18:31:54 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Feb 07 18:31:54 2009 +0100" }, "message": "Merge branch \u0027linus\u0027 into core/locking\n\nConflicts:\n\tfs/btrfs/locking.c\n" }, { "commit": "7d8e23df69820e6be42bcc41d441f4860e8c76f7", "tree": "a39d2c85a0ba741c3fd497b9cd98136fcc4633b3", "parents": [ "4cd4c1b40d40447fb5e7ba80746c6d7ba91d7a53" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Feb 06 14:57:51 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Feb 06 14:57:51 2009 +0100" }, "message": "timers: split process wide cpu clocks/timers, remove spurious warning\n\nMike Galbraith reported that the new warning in thread_group_cputimer()\ntriggers en masse with Amarok running.\n\nOleg Nesterov observed:\n\n Can\u0027t fastpath_timer_check()-\u003ethread_group_cputimer() have the\n false warning too? Suppose we had the timer, then posix_cpu_timer_del()\n removes this timer, but task_cputime_zero(\u0026sig-\u003ecputime_expires) still\n not true.\n\nRemove the spurious debug warning.\n\nReported-by: Mike Galbraith \u003cefault@gmx.de\u003e\nExplained-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "9d45cf9e36bf9bcf16df6e1cbf049807c8402823", "tree": "2118a16701418af10d215d2174df7ee0a5cbe6bd", "parents": [ "a146649bc19d5eba4f5bfac6720c5f252d517a71", "0cd5c3c80a0ebd68c08312fa7d8c13149cc61c4c" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Jan 31 17:32:31 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Feb 05 22:30:01 2009 +0100" }, "message": "Merge branch \u0027x86/urgent\u0027 into x86/apic\n\nConflicts:\n\tarch/x86/mach-default/setup.c\n\nSemantic merge:\n\tarch/x86/kernel/irqinit_32.c\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "4cd4c1b40d40447fb5e7ba80746c6d7ba91d7a53", "tree": "b1e580d5284648d6884e951d995509094a92cca4", "parents": [ "32bd671d6cbeda60dc73be77fa2b9037d9a9bfa0" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Thu Feb 05 12:24:16 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Feb 05 13:04:33 2009 +0100" }, "message": "timers: split process wide cpu clocks/timers\n\nChange the process wide cpu timers/clocks so that we:\n\n 1) don\u0027t mess up the kernel with too many threads,\n 2) don\u0027t have a per-cpu allocation for each process,\n 3) have no impact when not used.\n\nIn order to accomplish this we\u0027re going to split it into two parts:\n\n - clocks; which can take all the time they want since they run\n from user context -- ie. sys_clock_gettime(CLOCK_PROCESS_CPUTIME_ID)\n\n - timers; which need constant time sampling but since they\u0027re\n explicity used, the user can pay the overhead.\n\nThe clock readout will go back to a full sum of the thread group, while the\ntimers will run of a global \u0027clock\u0027 that only runs when needed, so only\nprograms that make use of the facility pay the price.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nReviewed-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "32bd671d6cbeda60dc73be77fa2b9037d9a9bfa0", "tree": "591c941b9f12ce9f3caefd112f0ada3c5fcc53ab", "parents": [ "83895147b702434e6f236deeca75211fd0e3da3a" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Thu Feb 05 12:24:15 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Feb 05 13:04:33 2009 +0100" }, "message": "signal: re-add dead task accumulation stats.\n\nWe\u0027re going to split the process wide cpu accounting into two parts:\n\n - clocks; which can take all the time they want since they run\n from user context.\n\n - timers; which need constant time tracing but can affort the overhead\n because they\u0027re default off -- and rare.\n\nThe clock readout will go back to a full sum of the thread group, for this\nwe need to re-add the exit stats that were removed in the initial itimer\nrework (f06febc9: timers: fix itimer/many thread hang).\n\nFurthermore, since that full sum can be rather slow for large thread groups\nand we have the complete dead task stats, revert the do_notify_parent time\ncomputation.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nReviewed-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "35626129abcd6a7547e84c817ef5b6eff7a8758b", "tree": "f11a12218b023183355c1dab79bb21403bbb6713", "parents": [ "b1792e367053968f2ddb48bc911d314143ce6242" ], "author": { "name": "Randy Dunlap", "email": "randy.dunlap@oracle.com", "time": "Mon Feb 02 16:00:29 2009 -0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Feb 03 06:32:10 2009 +0100" }, "message": "sched: add missing kernel-doc in sched.h\n\nAdd kernel-doc notation for @lock:\n\ninclude/linux/sched.h:457: No description found for parameter \u0027lock\u0027\n\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "dc573f9b20c8710105ac35c08ed0fe1da5160ecd", "tree": "24db0a0f6364b78f9c74e62541d26155e785b8f9", "parents": [ "b3a8c34886d0e3dd3a24a5b614ee025181da2f41", "ecf441b593ac41cb8cd8cd3695110167c42e098c", "b1792e367053968f2ddb48bc911d314143ce6242" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Feb 03 06:25:38 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Feb 03 06:25:38 2009 +0100" }, "message": "Merge branches \u0027tracing/ftrace\u0027, \u0027tracing/kmemtrace\u0027 and \u0027linus\u0027 into tracing/core\n" }, { "commit": "5e54f5986a579b8445aa1d5ad3435c2cf7568bed", "tree": "816f65fa49e4f4c127314dd5022bc3d3bbb8f716", "parents": [ "603a148f434742fff08273207ffa44176cad13a1" ], "author": { "name": "Mandeep Singh Baines", "email": "msb@google.com", "time": "Fri Jan 30 15:29:54 2009 -0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Jan 31 20:12:28 2009 +0100" }, "message": "softlockup: remove unused definition for spawn_softlockup_task\n\nThe definition of spawn_softlockup_task in sched.h became\nunnecessary once it was converted to the early_initcall()\ninterface.\n\nSigned-off-by: Mandeep Singh Baines \u003cmsb@google.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "9df04e1f25effde823a600e755b51475d438f56b", "tree": "57a207adf5e4bfb010000724dc1482e421933be4", "parents": [ "3095eb87bb36ae880608fe3fc46cfd59ced1f319" ], "author": { "name": "Davide Libenzi", "email": "davidel@xmailserver.org", "time": "Thu Jan 29 14:25:26 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 29 18:04:45 2009 -0800" }, "message": "epoll: drop max_user_instances and rely only on max_user_watches\n\nLinus suggested to put limits where the money is, and max_user_watches\nalready does that w/out the need of max_user_instances. That has the\nadvantage to mitigate the potential DoS while allowing pretty generous\ndefault behavior.\n\nAllowing top 4% of low memory (per user) to be allocated in epoll watches,\nwe have:\n\nLOMEM MAX_WATCHES (per user)\n512MB ~178000\n1GB ~356000\n2GB ~712000\n\nA box with 512MB of lomem, will meet some challenge in hitting 180K\nwatches, socket buffers math teaches us. No more max_user_instances\nlimits then.\n\nSigned-off-by: Davide Libenzi \u003cdavidel@xmailserver.org\u003e\nCc: Willy Tarreau \u003cw@1wt.eu\u003e\nCc: Michael Kerrisk \u003cmtk.manpages@googlemail.com\u003e\nCc: Bron Gondwana \u003cbrong@fastmail.fm\u003e\nCc: \u003cstable@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": "3ddeb51d9c83931c1ca6abf76a38934c5a1ed918", "tree": "fc2efb59d627135ea2199a8a68415b162646b121", "parents": [ "5a611268b69f05262936dd177205acbce4471358", "5ee810072175042775e39bdd3eaaa68884c27805" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jan 27 12:01:51 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jan 27 12:01:51 2009 +0100" }, "message": "Merge branch \u0027linus\u0027 into core/percpu\n\nConflicts:\n\tarch/x86/kernel/setup_percpu.c\n" }, { "commit": "3386c05bdbd3e60ca7158253442f0a00133db28e", "tree": "19e48f0352e65eb83a0e922fb75528ed39f44ebd", "parents": [ "1e70c7f7a9d4a3d2cc78b40e1d7768d99cd79899", "6552ebae25ffd57574c6e72d17fce67fea08b918" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jan 26 09:47:56 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jan 26 09:47:56 2009 -0800" }, "message": "Merge branch \u0027core-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027core-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n debugobjects: add and use INIT_WORK_ON_STACK\n rcu: remove duplicate CONFIG_RCU_CPU_STALL_DETECTOR\n relay: fix lock imbalance in relay_late_setup_files\n oprofile: fix uninitialized use of struct op_entry\n rcu: move Kconfig menu\n softlock: fix false panic which can occur if softlockup_thresh is reduced\n rcu: add __cpuinit to rcu_init_percpu_data()\n" }, { "commit": "7e49fcce1bdadd723ae6a0b3b324c4daced61563", "tree": "a2bf1a143ed33ca01612dfab1fb7c993c467cdb0", "parents": [ "b06a830183b610c0a88c29a92feb7991a867ab46" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Jan 22 19:01:40 2009 -0500" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jan 23 11:10:57 2009 +0100" }, "message": "trace, lockdep: manual preempt count adding for local_bh_disable\n\nImpact: fix to preempt trace triggering lockdep check_flag failure\n\nIn local_bh_disable, the use of add_preempt_count causes the\npreempt tracer to start recording the time preemption is off.\nBut because it already modified the preempt_count to show\nsoftirqs disabled, and before it called the lockdep code to\nhandle this, it causes a state that lockdep can not handle.\n\nThe preempt tracer will reset the ring buffer on start of a trace,\nand the ring buffer reset code does a spin_lock_irqsave. This\ncalls into lockdep and lockdep will fail when it detects the\ninvalid state of having softirqs disabled but the internal\ncurrent-\u003esoftirqs_enabled is still set.\n\nThe fix is to manually add the SOFTIRQ_OFFSET to preempt count\nand call the preempt tracer code outside the lockdep critical\narea.\n\nThanks to Peter Zijlstra for suggesting this solution.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "b2b062b8163391c42b3219d466ca1ac9742b9c7b", "tree": "f3f920c09b8de694b1bc1d4b878cfd2b0b98c913", "parents": [ "a9de18eb761f7c1c860964b2e5addc1a35c7e861", "99937d6455cea95405ac681c86a857d0fcd530bd" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Jan 18 18:37:14 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Jan 18 18:37:14 2009 +0100" }, "message": "Merge branch \u0027core/percpu\u0027 into stackprotector\n\nConflicts:\n\tarch/x86/include/asm/pda.h\n\tarch/x86/include/asm/system.h\n\nAlso, moved include/asm-x86/stackprotector.h to arch/x86/include/asm.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "e162b39a368f0401e41b558f430c354d12a85b37", "tree": "3fb7e4d48f398d62e5074e7e3dd183cc54f59820", "parents": [ "c903ff837909ccada51243307d4239f86af40179" ], "author": { "name": "Mandeep Singh Baines", "email": "msb@google.com", "time": "Thu Jan 15 11:08:40 2009 -0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jan 16 14:06:04 2009 +0100" }, "message": "softlockup: decouple hung tasks check from softlockup detection\n\nDecoupling allows:\n\n* hung tasks check to happen at very low priority\n\n* hung tasks check and softlockup to be enabled/disabled independently\n at compile and/or run-time\n\n* individual panic settings to be enabled disabled independently\n at compile and/or run-time\n\n* softlockup threshold to be reduced without increasing hung tasks\n poll frequency (hung task check is expensive relative to softlock watchdog)\n\n* hung task check to be zero over-head when disabled at run-time\n\nSigned-off-by: Mandeep Singh Baines \u003cmsb@google.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "34cb61359b503d7aff6447acb037a5efd6ce93b2", "tree": "88d72e4db5c969e4ccba5ee4c0a098e77adf6b16", "parents": [ "e52fb7c097238d34f4d8e2a596f8a3f85b0c0565" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jan 16 13:36:06 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jan 16 13:37:25 2009 +0100" }, "message": "sched: fix !CONFIG_SCHEDSTATS build failure\n\nStephen Rothwell reported this linux-next build failure with !CONFIG_SCHEDSTATS:\n\n| In file included from kernel/sched.c:1703:\n| kernel/sched_fair.c: In function \u0027adaptive_gran\u0027:\n| kernel/sched_fair.c:1324: error: \u0027struct sched_entity\u0027 has no member named \u0027avg_wakeup\u0027\n\nThe start_runtime and avg_wakeup metrics are now not just for statistics,\nbut also for scheduling - so they always need to be available. (Also\nmove out the nr_migrations fields - for future perfcounters usage.)\n\nReported-by: Stephen Rothwell \u003csfr@canb.auug.org.au\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "831451ac4e44d3a20b581ce726ef1d1144373f7d", "tree": "0ef28221132dc7cd30a2660bb4193fb86f3bb021", "parents": [ "a6525042bfdfcab128bd91fad264de10fd24a55e" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Wed Jan 14 12:39:18 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Jan 15 12:00:08 2009 +0100" }, "message": "sched: introduce avg_wakeup\n\nIntroduce a new avg_wakeup statistic.\n\navg_wakeup is a measure of how frequently a task wakes up other tasks, it\nrepresents the average time between wakeups, with a limit of avg_runtime\nfor when it doesn\u0027t wake up anybody.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Mike Galbraith \u003cefault@gmx.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "0d66bf6d3514b35eb6897629059443132992dbd7", "tree": "a47ee0fc3299361cf3b222c8242741adfedaab74", "parents": [ "41719b03091911028116155deddc5eedf8c45e37" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Mon Jan 12 14:01:47 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 14 18:09:02 2009 +0100" }, "message": "mutex: implement adaptive spinning\n\nChange mutex contention behaviour such that it will sometimes busy wait on\nacquisition - moving its behaviour closer to that of spinlocks.\n\nThis concept got ported to mainline from the -rt tree, where it was originally\nimplemented for rtmutexes by Steven Rostedt, based on work by Gregory Haskins.\n\nTesting with Ingo\u0027s test-mutex application (http://lkml.org/lkml/2006/1/8/50)\ngave a 345% boost for VFS scalability on my testbox:\n\n # ./test-mutex-shm V 16 10 | grep \"^avg ops\"\n avg ops/sec: 296604\n\n # ./test-mutex-shm V 16 10 | grep \"^avg ops\"\n avg ops/sec: 85870\n\nThe key criteria for the busy wait is that the lock owner has to be running on\na (different) cpu. The idea is that as long as the owner is running, there is a\nfair chance it\u0027ll release the lock soon, and thus we\u0027ll be better off spinning\ninstead of blocking/scheduling.\n\nSince regular mutexes (as opposed to rtmutexes) do not atomically track the\nowner, we add the owner in a non-atomic fashion and deal with the races in\nthe slowpath.\n\nFurthermore, to ease the testing of the performance impact of this new code,\nthere is means to disable this behaviour runtime (without having to reboot\nthe system), when scheduler debugging is enabled (CONFIG_SCHED_DEBUG\u003dy),\nby issuing the following command:\n\n # echo NO_OWNER_SPIN \u003e /debug/sched_features\n\nThis command re-enables spinning again (this is also the default):\n\n # echo OWNER_SPIN \u003e /debug/sched_features\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "41719b03091911028116155deddc5eedf8c45e37", "tree": "20a699807d78bc0af86b19443dc751415c0cc6f7", "parents": [ "93d81d1aca26e64a75d06a85f7e128b5f49053e7" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Wed Jan 14 15:36:26 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 14 18:09:00 2009 +0100" }, "message": "mutex: preemption fixes\n\nThe problem is that dropping the spinlock right before schedule is a voluntary\npreemption point and can cause a schedule, right after which we schedule again.\n\nFix this inefficiency by keeping preemption disabled until we schedule, do this\nby explicity disabling preemption and providing a schedule() variant that\nassumes preemption is already disabled.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "baf48f6577e581a9adb8fe849dc80e24b21d171d", "tree": "279e54b7374a9c52025ded4f9bb718e5382b0340", "parents": [ "e4fa4c97016037620f9dc8bafe03e1086b665b4c" ], "author": { "name": "Mandeep Singh Baines", "email": "msb@google.com", "time": "Mon Jan 12 21:15:17 2009 -0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 14 11:48:07 2009 +0100" }, "message": "softlock: fix false panic which can occur if softlockup_thresh is reduced\n\nAt run-time, if softlockup_thresh is changed to a much lower value,\ntouch_timestamp is likely to be much older than the new softlock_thresh.\n\nThis will cause a false softlockup to be detected. If softlockup_panic\nis enabled, the system will panic.\n\nThe fix is to touch all watchdogs before changing softlockup_thresh.\n\nSigned-off-by: Mandeep Singh Baines \u003cmsb@google.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "0a6d4e1dc9154c4376358663d74060d1e33d203e", "tree": "5e0b72984d249bc215a6cd52b12e7b1d27abc852", "parents": [ "c59765042f53a79a7a65585042ff463b69cb248c", "1563513d34ed4b12ef32bc2adde4a53ce05701a1" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Jan 11 04:58:49 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Jan 11 04:58:49 2009 +0100" }, "message": "Merge branch \u0027sched/latest\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/ghaskins/linux-2.6-hacks into sched/rt\n" }, { "commit": "490dea45d00f01847ebebd007685d564aaf2cd98", "tree": "a1f559fd497b10c21479b378ffb262d517cb627b", "parents": [ "ede6f5aea054d3fb67c78857f7abdee602302043" ], "author": { "name": "Peter Zijlstra", "email": "peterz@infradead.org", "time": "Mon Nov 24 17:06:57 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 07 18:52:44 2009 +0100" }, "message": "itimers: remove the per-cpu-ish-ness\n\nEither we bounce once cacheline per cpu per tick, yielding n^2 bounces\nor we just bounce a single..\n\nAlso, using per-cpu allocations for the thread-groups complicates the\nper-cpu allocator in that its currently aimed to be a fixed sized\nallocator and the only possible extention to that would be vmap based,\nwhich is seriously constrained on 32 bit archs.\n\nSo making the per-cpu memory requirement depend on the number of\nprocesses is an issue.\n\nLastly, it didn\u0027t deal with cpu-hotplug, although admittedly that might\nbe fixable.\n\nSigned-off-by: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "cfa97f993c275d193fe82c22511dfb5f1e51b661", "tree": "552cea5db0ef07bbcc5d53850607dcda6f9b664c", "parents": [ "7238eb4ca35cd63340dc02caf757376e40c1210c", "db2f59c8c9b315f2b88b1dac159b988c6009034d" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 06 17:10:33 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 06 17:10:33 2009 -0800" }, "message": "Merge branch \u0027sched-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027sched-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n sched: fix section mismatch\n sched: fix double kfree in failure path\n sched: clean up arch_reinit_sched_domains()\n sched: mark sched_create_sysfs_power_savings_entries() as __init\n getrusage: RUSAGE_THREAD should return ru_utime and ru_stime\n sched: fix sched_slice()\n sched_clock: prevent scd-\u003eclock from moving backwards, take #2\n sched: sched.c declare variables before they get used\n" }, { "commit": "901608d9045146aec6f14a7777ea4b1501c379f0", "tree": "0155189f48479b920855dedccba6829363376d4d", "parents": [ "67d58ac47d25f7e2a105248a4aea6113131ab874" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Tue Jan 06 14:40:29 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 06 15:59:09 2009 -0800" }, "message": "mm: introduce get_mm_hiwater_xxx(), fix taskstats-\u003ehiwater_xxx accounting\n\nxacct_add_tsk() relies on do_exit()-\u003eupdate_hiwater_xxx() and uses\nmm-\u003ehiwater_xxx directly, this leads to 2 problems:\n\n- taskstats_user_cmd() can call fill_pid()-\u003exacct_add_tsk() at any\n moment before the task exits, so we should check the current values of\n rss/vm anyway.\n\n- do_exit()-\u003eupdate_hiwater_xxx() calls are racy. An exiting thread can\n be preempted right before mm-\u003ehiwater_xxx \u003d new_val, and another thread\n can use A_LOT of memory and exit in between. When the first thread\n resumes it can be the last thread in the thread group, in that case we\n report the wrong hiwater_xxx values which do not take A_LOT into\n account.\n\nIntroduce get_mm_hiwater_rss() and get_mm_hiwater_vm() helpers and change\nxacct_add_tsk() to use them. The first helper will also be used by\nrusage-\u003eru_maxrss accounting.\n\nKill do_exit()-\u003eupdate_hiwater_xxx() calls. Unless we are going to\ndecrease rss/vm there is no point to update mm-\u003ehiwater_xxx, and nobody\ncan look at this mm_struct when exit_mmap() actually unmaps the memory.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nAcked-by: Hugh Dickins \u003chugh@veritas.com\u003e\nReviewed-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nAcked-by: Balbir Singh \u003cbalbir@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": "d9be28ea9110c596a05bd2d56afa94251bd19818", "tree": "c23a960b9087694a880011a4a956cbcf8c3c5b72", "parents": [ "c70f22d203fc02c805b6ed4a3483b740dc36786b", "1c5745aa380efb6417b5681104b007c8612fb496", "47fea2adfc9e16846bc57c2f64ff233b354fef39", "238c6d54830c624f34ac9cf123ac04aebfca5013" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jan 06 09:33:57 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jan 06 09:33:57 2009 +0100" }, "message": "Merge branches \u0027sched/clock\u0027, \u0027sched/cleanups\u0027 and \u0027linus\u0027 into sched/urgent\n" }, { "commit": "c70f22d203fc02c805b6ed4a3483b740dc36786b", "tree": "2677c5981257915c8682f0b08043ac46db1f709e", "parents": [ "39aac64812da70f0af262f4700e67637338cbb3b" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Mon Jan 05 19:07:50 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jan 05 13:54:16 2009 +0100" }, "message": "sched: clean up arch_reinit_sched_domains()\n\n- Make arch_reinit_sched_domains() static. It was exported to be used in\n s390, but now rebuild_sched_domains() is used instead.\n\n- Make it return void.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "61420f59a589c0668f70cbe725785837c78ece90", "tree": "79ae77d731cd2425677b9527d50079d8cf34c3b2", "parents": [ "d97106ab53f812910a62d18afb9dbe882819c1ba", "c742b31c03f37c5c499178f09f57381aa6c70131" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jan 03 11:56:24 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jan 03 11:56:24 2009 -0800" }, "message": "Merge branch \u0027cputime\u0027 of git://git390.osdl.marist.edu/pub/scm/linux-2.6\n\n* \u0027cputime\u0027 of git://git390.osdl.marist.edu/pub/scm/linux-2.6:\n [PATCH] fast vdso implementation for CLOCK_THREAD_CPUTIME_ID\n [PATCH] improve idle cputime accounting\n [PATCH] improve precision of idle time detection.\n [PATCH] improve precision of process accounting.\n [PATCH] idle cputime accounting\n [PATCH] fix scaled \u0026 unscaled cputime accounting\n" }, { "commit": "b840d79631c882786925303c2b0f4fefc31845ed", "tree": "cda60a95d4507fe1321fc285af38982d7eb9693b", "parents": [ "597b0d21626da4e6f09f132442caf0cc2b0eb47c", "c3d80000e3a812fe5a200d6bde755fbd7fa65481" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 02 11:44:09 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 02 11:44:09 2009 -0800" }, "message": "Merge branch \u0027cpus4096-for-linus-2\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027cpus4096-for-linus-2\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (66 commits)\n x86: export vector_used_by_percpu_irq\n x86: use logical apicid in x2apic_cluster\u0027s x2apic_cpu_mask_to_apicid_and()\n sched: nominate preferred wakeup cpu, fix\n x86: fix lguest used_vectors breakage, -v2\n x86: fix warning in arch/x86/kernel/io_apic.c\n sched: fix warning in kernel/sched.c\n sched: move test_sd_parent() to an SMP section of sched.h\n sched: add SD_BALANCE_NEWIDLE at MC and CPU level for sched_mc\u003e0\n sched: activate active load balancing in new idle cpus\n sched: bias task wakeups to preferred semi-idle packages\n sched: nominate preferred wakeup cpu\n sched: favour lower logical cpu number for sched_mc balance\n sched: framework for sched_mc/smt_power_savings\u003dN\n sched: convert BALANCE_FOR_xx_POWER to inline functions\n x86: use possible_cpus\u003dNUM to extend the possible cpus allowed\n x86: fix cpu_mask_to_apicid_and to include cpu_online_mask\n x86: update io_apic.c to the new cpumask code\n x86: Introduce topology_core_cpumask()/topology_thread_cpumask()\n x86: xen: use smp_call_function_many()\n x86: use work_on_cpu in x86/kernel/cpu/mcheck/mce_amd_64.c\n ...\n\nFixed up trivial conflict in kernel/time/tick-sched.c manually\n" }, { "commit": "79741dd35713ff4f6fd0eafd59fa94e8a4ba922d", "tree": "73c6b503fbd274cb3fcca7a0a68c6f636e3a53ad", "parents": [ "457533a7d3402d1d91fbc125c8bd1bd16dcd3cd4" ], "author": { "name": "Martin Schwidefsky", "email": "schwidefsky@de.ibm.com", "time": "Wed Dec 31 15:11:38 2008 +0100" }, "committer": { "name": "Martin Schwidefsky", "email": "schwidefsky@de.ibm.com", "time": "Wed Dec 31 15:11:46 2008 +0100" }, "message": "[PATCH] idle cputime accounting\n\nThe cpu time spent by the idle process actually doing something is\ncurrently accounted as idle time. This is plain wrong, the architectures\nthat support VIRT_CPU_ACCOUNTING\u003dy can do better: distinguish between the\ntime spent doing nothing and the time spent by idle doing work. The first\nis accounted with account_idle_time and the second with account_system_time.\nThe architectures that use the account_xxx_time interface directly and not\nthe account_xxx_ticks interface now need to do the check for the idle\nprocess in their arch code. In particular to improve the system vs true\nidle time accounting the arch code needs to measure the true idle time\ninstead of just testing for the idle process.\nTo improve the tick based accounting as well we would need an architecture\nprimitive that can tell us if the pt_regs of the interrupted context\npoints to the magic instruction that halts the cpu.\n\nIn addition idle time is no more added to the stime of the idle process.\nThis field now contains the system time of the idle process as it should\nbe. On systems without VIRT_CPU_ACCOUNTING this will always be zero as\nevery tick that occurs while idle is running will be accounted as idle\ntime.\n\nThis patch contains the necessary common code changes to be able to\ndistinguish idle system time and true idle time. The architectures with\nsupport for VIRT_CPU_ACCOUNTING need some changes to exploit this.\n\nSigned-off-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\n" }, { "commit": "a9de18eb761f7c1c860964b2e5addc1a35c7e861", "tree": "886e75fdfd09690cd262ca69cb7f5d1d42b48602", "parents": [ "b2aaf8f74cdc84a9182f6cabf198b7763bcb9d40", "6a94cb73064c952255336cc57731904174b2c58f" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Dec 31 08:31:57 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Dec 31 08:31:57 2008 +0100" }, "message": "Merge branch \u0027linus\u0027 into stackprotector\n\nConflicts:\n\tarch/x86/include/asm/pda.h\n\tkernel/fork.c\n" }, { "commit": "47fea2adfc9e16846bc57c2f64ff233b354fef39", "tree": "00e72585e260dd84f4933d6894168c497d9fb1e6", "parents": [ "3c92ec8ae91ecf59d88c798301833d7cf83f2179" ], "author": { "name": "Jaswinder Singh Rajput", "email": "jaswinder@infradead.org", "time": "Mon Dec 29 23:39:17 2008 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Dec 30 07:42:34 2008 +0100" }, "message": "sched: sched.c declare variables before they get used\n\nImpact: cleanup, avoid sparse warnings\n\nIn linux/sched.h moved out sysctl_sched_latency, sysctl_sched_min_granularity,\nsysctl_sched_wakeup_granularity, sysctl_sched_shares_ratelimit and\nsysctl_sched_shares_thresh from #ifdef CONFIG_SCHED_DEBUG as these variables\nare common for both.\n\nFixes these sparse warnings:\n kernel/sched.c:825:14: warning: symbol \u0027sysctl_sched_shares_ratelimit\u0027 was not declared. Should it be static?\n kernel/sched.c:832:14: warning: symbol \u0027sysctl_sched_shares_thresh\u0027 was not declared. Should it be static?\n kernel/sched_fair.c:37:14: warning: symbol \u0027sysctl_sched_latency\u0027 was not declared. Should it be static?\n kernel/sched_fair.c:43:14: warning: symbol \u0027sysctl_sched_min_granularity\u0027 was not declared. Should it be static?\n kernel/sched_fair.c:72:14: warning: symbol \u0027sysctl_sched_wakeup_granularity\u0027 was not declared. Should it be static?\n\nSigned-off-by: Jaswinder Singh Rajput \u003cjaswinderrajput@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "917b627d4d981dc614519d7b34ea31a976b14e12", "tree": "edb1744bd3f943ee79ee4f6c995c48a28421504c", "parents": [ "4075134e40804821f90866d7de56802e4dcecb1e" ], "author": { "name": "Gregory Haskins", "email": "ghaskins@novell.com", "time": "Mon Dec 29 09:39:53 2008 -0500" }, "committer": { "name": "Gregory Haskins", "email": "ghaskins@novell.com", "time": "Mon Dec 29 09:39:53 2008 -0500" }, "message": "sched: create \"pushable_tasks\" list to limit pushing to one attempt\n\nThe RT scheduler employs a \"push/pull\" design to actively balance tasks\nwithin the system (on a per disjoint cpuset basis). When a task is\nawoken, it is immediately determined if there are any lower priority\ncpus which should be preempted. This is opposed to the way normal\nSCHED_OTHER tasks behave, which will wait for a periodic rebalancing\noperation to occur before spreading out load.\n\nWhen a particular RQ has more than 1 active RT task, it is said to\nbe in an \"overloaded\" state. Once this occurs, the system enters\nthe active balancing mode, where it will try to push the task away,\nor persuade a different cpu to pull it over. The system will stay\nin this state until the system falls back below the \u003c\u003d 1 queued RT\ntask per RQ.\n\nHowever, the current implementation suffers from a limitation in the\npush logic. Once overloaded, all tasks (other than current) on the\nRQ are analyzed on every push operation, even if it was previously\nunpushable (due to affinity, etc). Whats more, the operation stops\nat the first task that is unpushable and will not look at items\nlower in the queue. This causes two problems:\n\n1) We can have the same tasks analyzed over and over again during each\n push, which extends out the fast path in the scheduler for no\n gain. Consider a RQ that has dozens of tasks that are bound to a\n core. Each one of those tasks will be encountered and skipped\n for each push operation while they are queued.\n\n2) There may be lower-priority tasks under the unpushable task that\n could have been successfully pushed, but will never be considered\n until either the unpushable task is cleared, or a pull operation\n succeeds. The net result is a potential latency source for mid\n priority tasks.\n\nThis patch aims to rectify these two conditions by introducing a new\npriority sorted list: \"pushable_tasks\". A task is added to the list\neach time a task is activated or preempted. It is removed from the\nlist any time it is deactivated, made current, or fails to push.\n\nThis works because a task only needs to be attempted to push once.\nAfter an initial failure to push, the other cpus will eventually try to\npull the task when the conditions are proper. This also solves the\nproblem that we don\u0027t completely analyze all tasks due to encountering\nan unpushable tasks. Now every task will have a push attempted (when\nappropriate).\n\nThis reduces latency both by shorting the critical section of the\nrq-\u003elock for certain workloads, and by making sure the algorithm\nconsiders all eligible tasks in the system.\n\n[ rostedt: added a couple more BUG_ONs ]\n\nSigned-off-by: Gregory Haskins \u003cghaskins@novell.com\u003e\nAcked-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "967fc04671feea4dbf780c9e55a0bc8fcf68a14e", "tree": "223f2bb8c59138cc70fbb0e438ae27819ebe1a92", "parents": [ "8f45e2b516201d1bf681e6026fa5276385def565" ], "author": { "name": "Gregory Haskins", "email": "ghaskins@novell.com", "time": "Mon Dec 29 09:39:52 2008 -0500" }, "committer": { "name": "Gregory Haskins", "email": "ghaskins@novell.com", "time": "Mon Dec 29 09:39:52 2008 -0500" }, "message": "sched: add sched_class-\u003eneeds_post_schedule() member\n\nWe currently run class-\u003epost_schedule() outside of the rq-\u003elock, which\nmeans that we need to test for the need to post_schedule outside of\nthe lock to avoid a forced reacquistion. This is currently not a problem\nas we only look at rq-\u003ert.overloaded. However, we want to enhance this\ngoing forward to look at more state to reduce the need to post_schedule to\na bare minimum set. Therefore, we introduce a new member-func called\nneeds_post_schedule() which tests for the post_schedule condtion without\nactually performing the work. Therefore it is safe to call this\nfunction before the rq-\u003elock is released, because we are guaranteed not\nto drop the lock at an intermediate point (such as what post_schedule()\nmay do).\n\nWe will use this later in the series\n\n[ rostedt: removed paranoid BUG_ON ]\n\nSigned-off-by: Gregory Haskins \u003cghaskins@novell.com\u003e\n" }, { "commit": "a39b863342b8aba52390092be95db58f6ed56061", "tree": "a952625e9815c0a4d7fe9f85c33908068513429a", "parents": [ "b0f4b285d7ed174804658539129a834270f4829a", "4e202284e6ac1695df3eb4a0e549ea78addfb663" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Dec 28 12:27:58 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Dec 28 12:27:58 2008 -0800" }, "message": "Merge branch \u0027sched-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027sched-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (31 commits)\n sched: fix warning in fs/proc/base.c\n schedstat: consolidate per-task cpu runtime stats\n sched: use RCU variant of list traversal in for_each_leaf_rt_rq()\n sched, cpuacct: export percpu cpuacct cgroup stats\n sched, cpuacct: refactoring cpuusage_read / cpuusage_write\n sched: optimize update_curr()\n sched: fix wakeup preemption clock\n sched: add missing arch_update_cpu_topology() call\n sched: let arch_update_cpu_topology indicate if topology changed\n sched: idle_balance() does not call load_balance_newidle()\n sched: fix sd_parent_degenerate on non-numa smp machine\n sched: add uid information to sched_debug for CONFIG_USER_SCHED\n sched: move double_unlock_balance() higher\n sched: update comment for move_task_off_dead_cpu\n sched: fix inconsistency when redistribute per-cpu tg-\u003ecfs_rq shares\n sched/rt: removed unneeded defintion\n sched: add hierarchical accounting to cpu accounting controller\n sched: include group statistics in /proc/sched_debug\n sched: rename SCHED_NO_NO_OMIT_FRAME_POINTER \u003d\u003e SCHED_OMIT_FRAME_POINTER\n sched: clean up SCHED_CPUMASK_ALLOC\n ...\n" }, { "commit": "b0f4b285d7ed174804658539129a834270f4829a", "tree": "be7f8dca58075aba2c6a137fcfd4d44c5c333efc", "parents": [ "be9c5ae4eeec2e85527e95647348b8ea4eb25128", "5250d329e38cdf7580faeb9c53c17d3588d7d19c" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Dec 28 12:21:10 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Dec 28 12:21:10 2008 -0800" }, "message": "Merge branch \u0027tracing-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027tracing-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (241 commits)\n sched, trace: update trace_sched_wakeup()\n tracing/ftrace: don\u0027t trace on early stage of a secondary cpu boot, v3\n Revert \"x86: disable X86_PTRACE_BTS\"\n ring-buffer: prevent false positive warning\n ring-buffer: fix dangling commit race\n ftrace: enable format arguments checking\n x86, bts: memory accounting\n x86, bts: add fork and exit handling\n ftrace: introduce tracing_reset_online_cpus() helper\n tracing: fix warnings in kernel/trace/trace_sched_switch.c\n tracing: fix warning in kernel/trace/trace.c\n tracing/ring-buffer: remove unused ring_buffer size\n trace: fix task state printout\n ftrace: add not to regex on filtering functions\n trace: better use of stack_trace_enabled for boot up code\n trace: add a way to enable or disable the stack tracer\n x86: entry_64 - introduce FTRACE_ frame macro v2\n tracing/ftrace: add the printk-msg-only option\n tracing/ftrace: use preempt_enable_no_resched_notrace in ring_buffer_time_stamp()\n x86, bts: correctly report invalid bts records\n ...\n\nFixed up trivial conflict in scripts/recordmcount.pl due to SH bits\nbeing already partly merged by the SH merge.\n" }, { "commit": "06aaf76a7e2e4cc57eabcb8f43ec99c961fe55fe", "tree": "82321fd9e565deaeedc9dd1c4de7c52c0e4113b7", "parents": [ "100fdaee70ebf5f31b9451fbc01300c627091328" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Dec 18 21:30:23 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Dec 19 09:21:56 2008 +0100" }, "message": "sched: move test_sd_parent() to an SMP section of sched.h\n\nImpact: build fix\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "100fdaee70ebf5f31b9451fbc01300c627091328", "tree": "81493242ff99c8ba52163da5b44ffc51929622cf", "parents": [ "ad273b32e482cdef306eac32b28d97f513a022f4" ], "author": { "name": "Vaidyanathan Srinivasan", "email": "svaidy@linux.vnet.ibm.com", "time": "Thu Dec 18 23:26:47 2008 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Dec 19 09:21:55 2008 +0100" }, "message": "sched: add SD_BALANCE_NEWIDLE at MC and CPU level for sched_mc\u003e0\n\nImpact: change task balancing to save power more agressively\n\nAdd SD_BALANCE_NEWIDLE flag at MC level and CPU level\nif sched_mc is set. This helps power savings and\nwill not affect performance when sched_mc\u003d0\n\nIngo and Mike Galbraith have optimised the SD flags by\nremoving SD_BALANCE_NEWIDLE at MC and CPU level. This\nhelps performance but hurts power savings since this\nslows down task consolidation by reducing the number\nof times load_balance is run.\n\n sched: fine-tune SD_MC_INIT\n commit 14800984706bf6936bbec5187f736e928be5c218\n Author: Mike Galbraith \u003cefault@gmx.de\u003e\n Date: Fri Nov 7 15:26:50 2008 +0100\n\n sched: re-tune balancing -- revert\n commit 9fcd18c9e63e325dbd2b4c726623f760788d5aa8\n Author: Ingo Molnar \u003cmingo@elte.hu\u003e\n Date: Wed Nov 5 16:52:08 2008 +0100\n\nThis patch selectively enables SD_BALANCE_NEWIDLE flag\nonly when sched_mc is set to 1 or 2. This helps power savings\nby task consolidation and also does not hurt performance at\nsched_mc\u003d0 where all power saving optimisations are turned off.\n\nSigned-off-by: Vaidyanathan Srinivasan \u003csvaidy@linux.vnet.ibm.com\u003e\nAcked-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "afb8a9b70b86866a60e08b2956ae4e1406390336", "tree": "e4f8918230f4a4eb696c32edb888bced183001db", "parents": [ "716707b29906e1d8d190defe3d646610b097a861" ], "author": { "name": "Gautham R Shenoy", "email": "ego@in.ibm.com", "time": "Thu Dec 18 23:26:09 2008 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Dec 19 09:21:46 2008 +0100" }, "message": "sched: framework for sched_mc/smt_power_savings\u003dN\n\nImpact: extend range of /sys/devices/system/cpu/sched_mc_power_savings\n\nCurrently the sched_mc/smt_power_savings variable is a boolean,\nwhich either enables or disables topology based power savings.\nThis patch extends the behaviour of the variable from boolean to\nmultivalued, such that based on the value, we decide how\naggressively do we want to perform powersavings balance at\nappropriate sched domain based on topology.\n\nVariable levels of power saving tunable would benefit end user to\nmatch the required level of power savings vs performance\ntrade-off depending on the system configuration and workloads.\n\nThis version makes the sched_mc_power_savings global variable to\ntake more values (0,1,2). Later versions can have a single\ntunable called sched_power_savings instead of\nsched_{mc,smt}_power_savings.\n\nSigned-off-by: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nSigned-off-by: Vaidyanathan Srinivasan \u003csvaidy@linux.vnet.ibm.com\u003e\nAcked-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "716707b29906e1d8d190defe3d646610b097a861", "tree": "02ddc0300b74d19bc93cc00d033b72e3e279dbf7", "parents": [ "3b11ce7f542e415c90267b4482d4611410b468e6" ], "author": { "name": "Vaidyanathan Srinivasan", "email": "svaidy@linux.vnet.ibm.com", "time": "Thu Dec 18 23:26:02 2008 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Dec 19 09:21:45 2008 +0100" }, "message": "sched: convert BALANCE_FOR_xx_POWER to inline functions\n\nImpact: cleanup\n\nBALANCE_FOR_MC_POWER and similar macros defined in sched.h are\nnot constants and have various condition checks and significant\namount of code that is not suitable to be contain in a macro.\nAlso there could be side effects on the expressions passed to\nsome of them like test_sd_parent().\n\nThis patch converts all complex macros related to power savings\nbalance to inline functions.\n\nSigned-off-by: Vaidyanathan Srinivasan \u003csvaidy@linux.vnet.ibm.com\u003e\nAcked-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "9c2c48020ec0dd6ecd27e5a1298f73b40d85a595", "tree": "1a44f56e18012120aff0969094eebd572deb2ea3", "parents": [ "e9515c3c9feecd74174c2998add0db51e02abb8d" ], "author": { "name": "Ken Chen", "email": "kenchen@google.com", "time": "Tue Dec 16 23:41:22 2008 -0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Dec 18 13:54:01 2008 +0100" }, "message": "schedstat: consolidate per-task cpu runtime stats\n\nImpact: simplify code\n\nWhen we turn on CONFIG_SCHEDSTATS, per-task cpu runtime is accumulated\ntwice. Once in task-\u003ese.sum_exec_runtime and once in sched_info.cpu_time.\nThese two stats are exactly the same.\n\nGiven that task-\u003ese.sum_exec_runtime is always accumulated by the core\nscheduler, sched_info can reuse that data instead of duplicate the accounting.\n\nSigned-off-by: Ken Chen \u003ckenchen@google.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "45ab6b0c76d0e4cce5bd608ccf97b0f6b20f18df", "tree": "4d51c73533c386aee16fde1e74b5e3bc22eedc53", "parents": [ "81444a799550214f549caf579cf65a0ca55e70b7", "d65bd5ecb2bd166cea4952a59b7e16cc3ad6ef6c" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Dec 12 13:48:57 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Dec 12 13:48:57 2008 +0100" }, "message": "Merge branch \u0027sched/core\u0027 into cpus4096\n\nConflicts:\n\tinclude/linux/ftrace.h\n\tkernel/sched.c\n" }, { "commit": "81444a799550214f549caf579cf65a0ca55e70b7", "tree": "3288dac0740be2e1e7d1af4ee51d792a6e91edf3", "parents": [ "a64d31baed104be25305e9c71585d3ea4ee9a418", "da485e0cb16726797e99a595a399b9fc721b91bc" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Dec 12 12:43:05 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Dec 12 12:43:05 2008 +0100" }, "message": "Merge branch \u0027tracing/fastboot\u0027 into cpus4096\n" }, { "commit": "c1dfdc7597d051b09555d4ae2acb90403e238746", "tree": "86aa49f5a2ab25459f9196dd6724bbe6645b1375", "parents": [ "efbe027e95dc13ac343b6130948418d7ead7ddf1", "8b1fae4e4200388b64dd88065639413cb3f1051c" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Dec 12 10:29:35 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Dec 12 10:29:35 2008 +0100" }, "message": "Merge commit \u0027v2.6.28-rc8\u0027 into sched/core\n" }, { "commit": "c2724775ce57c98b8af9694857b941dc61056516", "tree": "c3936699317da3233bc31e92d68cb582ec17d193", "parents": [ "b0884e25fe361f2ca228808fb5fd1b74cb04e711" ], "author": { "name": "Markus Metzger", "email": "markus.t.metzger@intel.com", "time": "Thu Dec 11 13:49:59 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Dec 12 08:08:12 2008 +0100" }, "message": "x86, bts: provide in-kernel branch-trace interface\n\nImpact: cleanup\n\nMove the BTS bits from ptrace.c into ds.c.\n\nSigned-off-by: Markus Metzger \u003cmarkus.t.metzger@intel.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "380c4b1411ccd6885f92b2c8ceb08433a720f44e", "tree": "f3b571e1caff2de3e6b4cace87c2b1ec332667d7", "parents": [ "8e1b82e0866befaa0b2920be296c6e4c3fc7f422" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Sat Dec 06 03:43:41 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Dec 08 15:11:45 2008 +0100" }, "message": "tracing/function-graph-tracer: append the tracing_graph_flag\n\nImpact: Provide a way to pause the function graph tracer\n\nAs suggested by Steven Rostedt, the previous patch that prevented from\nspinlock function tracing shouldn\u0027t use the raw_spinlock to fix it.\nIt\u0027s much better to follow lockdep with normal spinlock, so this patch\nadds a new flag for each task to make the function graph tracer able\nto be paused. We also can send an ftrace_printk whithout worrying of\nthe irrelevant traced spinlock during insertion.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "ea4e2bc4d9f7370e57a343ccb5e7c0ad3222ec3c", "tree": "64a4a1d9d7d3de0695cb2e8c7161886ab660e311", "parents": [ "b29144c317fb748dae6d72c0f88eda9d43165b8d" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Dec 03 15:36:57 2008 -0500" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Dec 04 09:09:34 2008 +0100" }, "message": "ftrace: graph of a single function\n\nThis patch adds the file:\n\n /debugfs/tracing/set_graph_function\n\nwhich can be used along with the function graph tracer.\n\nWhen this file is empty, the function graph tracer will act as\nusual. When the file has a function in it, the function graph\ntracer will only trace that function.\n\nFor example:\n\n # echo blk_unplug \u003e /debugfs/tracing/set_graph_function\n # cat /debugfs/tracing/trace\n [...]\n ------------------------------------------\n | 2) make-19003 \u003d\u003e kjournald-2219\n ------------------------------------------\n\n 2) | blk_unplug() {\n 2) | dm_unplug_all() {\n 2) | dm_get_table() {\n 2) 1.381 us | _read_lock();\n 2) 0.911 us | dm_table_get();\n 2) 1. 76 us | _read_unlock();\n 2) + 12.912 us | }\n 2) | dm_table_unplug_all() {\n 2) | blk_unplug() {\n 2) 0.778 us | generic_unplug_device();\n 2) 2.409 us | }\n 2) 5.992 us | }\n 2) 0.813 us | dm_table_put();\n 2) + 29. 90 us | }\n 2) + 34.532 us | }\n\nYou can add up to 32 functions into this file. Currently we limit it\nto 32, but this may change with later improvements.\n\nTo add another function, use the append \u0027\u003e\u003e\u0027:\n\n # echo sys_read \u003e\u003e /debugfs/tracing/set_graph_function\n # cat /debugfs/tracing/set_graph_function\n blk_unplug\n sys_read\n\nUsing the \u0027\u003e\u0027 will clear out the function and write anew:\n\n # echo sys_write \u003e /debug/tracing/set_graph_function\n # cat /debug/tracing/set_graph_function\n sys_write\n\nNote, if you have function graph running while doing this, the small\ntime between clearing it and updating it will cause the graph to\nrecord all functions. This should not be an issue because after\nit sets the filter, only those functions will be recorded from then on.\nIf you need to only record a particular function then set this\nfile first before starting the function graph tracer. In the future\nthis side effect may be corrected.\n\nThe set_graph_function file is similar to the set_ftrace_filter but\nit does not take wild cards nor does it allow for more than one\nfunction to be set with a single write. There is no technical reason why\nthis is the case, I just do not have the time yet to implement that.\n\nNote, dynamic ftrace must be enabled for this to appear because it\nuses the dynamic ftrace records to match the name to the mcount\ncall sites.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "b8307db2477f9c551e54e0c7b643ea349a3349cd", "tree": "88654f8bd73857bbd40f75013ce41d8882d16ce6", "parents": [ "f0461d0146ee30927bc7efa2ae24ea8c6693b725", "061e41fdb5047b1fb161e89664057835935ca1d2" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Dec 04 09:07:19 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Dec 04 09:07:19 2008 +0100" }, "message": "Merge commit \u0027v2.6.28-rc7\u0027 into tracing/core\n" }, { "commit": "ec98ce480ada787f2cfbd696980ff3564415505b", "tree": "1a4d644b38f9f1e4b4e086fde0b195df4a92cf84", "parents": [ "3496f92beb9aa99ef21fccc154a36c7698e9c538", "feaf3848a813a106f163013af6fcf6c4bfec92d9" ], "author": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Thu Dec 04 17:16:36 2008 +1100" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Thu Dec 04 17:16:36 2008 +1100" }, "message": "Merge branch \u0027master\u0027 into next\n\nConflicts:\n\tfs/nfsd/nfs4recover.c\n\nManually fixed above to use new creds API functions, e.g.\nnfs4_save_creds().\n\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "a64d31baed104be25305e9c71585d3ea4ee9a418", "tree": "470e3c59ef39f38bcd69f8fef7dba8f76afbec53", "parents": [ "1c39194878c09bd88ffc9c9d4c2f01c3397c7aed", "061e41fdb5047b1fb161e89664057835935ca1d2" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Dec 02 20:09:50 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Dec 02 20:09:50 2008 +0100" }, "message": "Merge branch \u0027linus\u0027 into cpus4096\n\nConflicts:\n\tkernel/trace/ring_buffer.c\n" }, { "commit": "7ef9964e6d1b911b78709f144000aacadd0ebc21", "tree": "30667d0a2f8e53973ff48d2c02df48bbc6fe74aa", "parents": [ "b7d271df873c5121a4ca1c70dea126b5920ec2f1" ], "author": { "name": "Davide Libenzi", "email": "davidel@xmailserver.org", "time": "Mon Dec 01 13:13:55 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Dec 01 19:55:24 2008 -0800" }, "message": "epoll: introduce resource usage limits\n\nIt has been thought that the per-user file descriptors limit would also\nlimit the resources that a normal user can request via the epoll\ninterface. Vegard Nossum reported a very simple program (a modified\nversion attached) that can make a normal user to request a pretty large\namount of kernel memory, well within the its maximum number of fds. To\nsolve such problem, default limits are now imposed, and /proc based\nconfiguration has been introduced. A new directory has been created,\nnamed /proc/sys/fs/epoll/ and inside there, there are two configuration\npoints:\n\n max_user_instances \u003d Maximum number of devices - per user\n\n max_user_watches \u003d Maximum number of \"watched\" fds - per user\n\nThe current default for \"max_user_watches\" limits the memory used by epoll\nto store \"watches\", to 1/32 of the amount of the low RAM. As example, a\n256MB 32bit machine, will have \"max_user_watches\" set to roughly 90000.\nThat should be enough to not break existing heavy epoll users. The\ndefault value for \"max_user_instances\" is set to 128, that should be\nenough too.\n\nThis also changes the userspace, because a new error code can now come out\nfrom EPOLL_CTL_ADD (-ENOSPC). The EMFILE from epoll_create() was already\nlisted, so that should be ok.\n\n[akpm@linux-foundation.org: use get_current_user()]\nSigned-off-by: Davide Libenzi \u003cdavidel@xmailserver.org\u003e\nCc: Michael Kerrisk \u003cmtk.manpages@gmail.com\u003e\nCc: \u003cstable@kernel.org\u003e\nCc: Cyrill Gorcunov \u003cgorcunov@gmail.com\u003e\nReported-by: Vegard Nossum \u003cvegardno@ifi.uio.no\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6c415b9234a8c71f290e5d4fddc467f103f32719", "tree": "d7ba28aab68b5b38952ccc6256b7ecb701b23ed5", "parents": [ "70574a996fc7a70c5586eb56bd92a544eccf18b6" ], "author": { "name": "Arun R Bharadwaj", "email": "arun@linux.vnet.ibm.com", "time": "Mon Dec 01 20:49:05 2008 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Dec 01 20:39:50 2008 +0100" }, "message": "sched: add uid information to sched_debug for CONFIG_USER_SCHED\n\nImpact: extend information in /proc/sched_debug\n\nThis patch adds uid information in sched_debug for CONFIG_USER_SCHED\n\nSigned-off-by: Arun R Bharadwaj \u003carun@linux.vnet.ibm.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "fb52607afcd0629776f1dc9e657647ceae81dd50", "tree": "7bf43b41ff8510d3098c089913cce56a9049f0fd", "parents": [ "509dceef6470442d8c7b8a43ec34125205840b3c" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Nov 25 21:07:04 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Nov 26 01:59:45 2008 +0100" }, "message": "tracing/function-return-tracer: change the name into function-graph-tracer\n\nImpact: cleanup\n\nThis patch changes the name of the \"return function tracer\" into\nfunction-graph-tracer which is a more suitable name for a tracing\nwhich makes one able to retrieve the ordered call stack during\nthe code flow.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nAcked-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "6abb11aecd888d1da6276399380b7355f127c006", "tree": "ef64f865780fa85f4ef102e6de4dd0a589302d32", "parents": [ "ca0002a179bfa532d009a9272d619732872c49bd" ], "author": { "name": "Markus Metzger", "email": "markus.t.metzger@intel.com", "time": "Tue Nov 25 09:05:27 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Nov 25 17:31:12 2008 +0100" }, "message": "x86, bts, ptrace: move BTS buffer allocation from ds.c into ptrace.c\n\nImpact: restructure DS memory allocation to be done by the usage site of DS\n\nRequire pre-allocated buffers in ds.h.\n\nMove the BTS buffer allocation for ptrace into ptrace.c.\nThe pointer to the allocated buffer is stored in the traced task\u0027s\ntask_struct together with the handle returned by ds_request_bts().\n\nRemoves memory accounting code.\n\nSigned-off-by: Markus Metzger \u003cmarkus.t.metzger@intel.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "ca0002a179bfa532d009a9272d619732872c49bd", "tree": "9a9ca02164dfb2c13afaa38ab67f3f15d8dd5ce8", "parents": [ "7d55718b0c19ba611241c330f688ee824e9bab79" ], "author": { "name": "Markus Metzger", "email": "markus.t.metzger@intel.com", "time": "Tue Nov 25 09:01:25 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Nov 25 17:31:11 2008 +0100" }, "message": "x86, bts: base in-kernel ds interface on handles\n\nImpact: generalize the DS code to shared buffers\n\nChange the in-kernel ds.h interface to identify the tracer via a\nhandle returned on ds_request_~().\n\nTracers used to be identified via their task_struct.\n\nThe changes are required to allow DS to be shared between different\ntasks, which is needed for perfmon2 and for ftrace.\n\nFor ptrace, the handle is stored in the traced task\u0027s task_struct.\nThis should probably go into a (arch-specific) ptrace context some\ntime.\n\nSigned-off-by: Markus Metzger \u003cmarkus.t.metzger@intel.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "18b6e0414e42d95183f07d8177e3ff0241abd825", "tree": "91ca2f2d442055e31eb7bb551bf7060f3f4c4cc7", "parents": [ "9789cfe22e5d7bc10cad841a4ea96ecedb34b267" ], "author": { "name": "Serge Hallyn", "email": "serue@us.ibm.com", "time": "Wed Oct 15 16:38:45 2008 -0500" }, "committer": { "name": "Serge E. Hallyn", "email": "serue@us.ibm.com", "time": "Mon Nov 24 18:57:41 2008 -0500" }, "message": "User namespaces: set of cleanups (v2)\n\nThe user_ns is moved from nsproxy to user_struct, so that a struct\ncred by itself is sufficient to determine access (which it otherwise\nwould not be). Corresponding ecryptfs fixes (by David Howells) are\nhere as well.\n\nFix refcounting. The following rules now apply:\n 1. The task pins the user struct.\n 2. The user struct pins its user namespace.\n 3. The user namespace pins the struct user which created it.\n\nUser namespaces are cloned during copy_creds(). Unsharing a new user_ns\nis no longer possible. (We could re-add that, but it\u0027ll cause code\nduplication and doesn\u0027t seem useful if PAM doesn\u0027t need to clone user\nnamespaces).\n\nWhen a user namespace is created, its first user (uid 0) gets empty\nkeyrings and a clean group_info.\n\nThis incorporates a previous patch by David Howells. Here\nis his original patch description:\n\n\u003eI suggest adding the attached incremental patch. It makes the following\n\u003echanges:\n\u003e\n\u003e (1) Provides a current_user_ns() macro to wrap accesses to current\u0027s user\n\u003e namespace.\n\u003e\n\u003e (2) Fixes eCryptFS.\n\u003e\n\u003e (3) Renames create_new_userns() to create_user_ns() to be more consistent\n\u003e with the other associated functions and because the \u0027new\u0027 in the name is\n\u003e superfluous.\n\u003e\n\u003e (4) Moves the argument and permission checks made for CLONE_NEWUSER to the\n\u003e beginning of do_fork() so that they\u0027re done prior to making any attempts\n\u003e at allocation.\n\u003e\n\u003e (5) Calls create_user_ns() after prepare_creds(), and gives it the new creds\n\u003e to fill in rather than have it return the new root user. I don\u0027t imagine\n\u003e the new root user being used for anything other than filling in a cred\n\u003e struct.\n\u003e\n\u003e This also permits me to get rid of a get_uid() and a free_uid(), as the\n\u003e reference the creds were holding on the old user_struct can just be\n\u003e transferred to the new namespace\u0027s creator pointer.\n\u003e\n\u003e (6) Makes create_user_ns() reset the UIDs and GIDs of the creds under\n\u003e preparation rather than doing it in copy_creds().\n\u003e\n\u003eDavid\n\n\u003eSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\n\nChangelog:\n\tOct 20: integrate dhowells comments\n\t\t1. leave thread_keyring alone\n\t\t2. use current_user_ns() in set_user()\n\nSigned-off-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\n" }, { "commit": "96f874e26428ab5d2db681c100210c254775e154", "tree": "e18a6f0629ef17f2344f3691c8df4692ccb875fa", "parents": [ "0e3900e6d3b04c44737ebc505604dcd8ed30e354" ], "author": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Tue Nov 25 02:35:14 2008 +1030" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Nov 24 17:52:42 2008 +0100" }, "message": "sched: convert remaining old-style cpumask operators\n\nImpact: Trivial API conversion\n\n NR_CPUS -\u003e nr_cpu_ids\n cpumask_t -\u003e struct cpumask\n sizeof(cpumask_t) -\u003e cpumask_size()\n cpumask_a \u003d cpumask_b -\u003e cpumask_copy(\u0026cpumask_a, \u0026cpumask_b)\n\n cpu_set() -\u003e cpumask_set_cpu()\n first_cpu() -\u003e cpumask_first()\n cpumask_of_cpu() -\u003e cpumask_of()\n cpus_* -\u003e cpumask_*\n\nThere are some FIXMEs where we all archs to complete infrastructure\n(patches have been sent):\n\n cpu_coregroup_map -\u003e cpu_coregroup_mask\n node_to_cpumask* -\u003e cpumask_of_node\n\nThere is also one FIXME where we pass an array of cpumasks to\npartition_sched_domains(): this implies knowing the definition of\n\u0027struct cpumask\u0027 and the size of a cpumask. This will be fixed in a\nfuture patch.\n\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" } ], "next": "6a7b3dc3440f7b5a9b67594af01ed562cdeb41e4" }