)]}' { "log": [ { "commit": "30639b6af85a92491b22dd14c17b14ca11da60e6", "tree": "f21c4dd631da5b8750678958b29947d4d0e90cb0", "parents": [ "8b0b1db0133e4218a9b45c09e53793c039edebe1" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Tue Jun 16 15:33:40 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jun 16 19:47:48 2009 -0700" }, "message": "groups: move code to kernel/groups.c\n\nMove supplementary groups implementation to kernel/groups.c .\nkernel/sys.c already accumulated quite a few random stuff.\n\nDo strictly copy/paste + add required headers to compile. Compile-tested\non many configs and archs.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e7fd5d4b3d240f42c30a9e3d20a4689c4d3a795a", "tree": "4ba588631dd8189a818a91c9e3976526071178b6", "parents": [ "1130b0296184bc21806225fd06d533515a99d2db", "56a50adda49b2020156616c4eb15353e0f9ad7de" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Apr 29 14:46:59 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Apr 29 14:47:05 2009 +0200" }, "message": "Merge branch \u0027linus\u0027 into perfcounters/core\n\nMerge reason: This brach was on -rc1, refresh it to almost-rc4 to pick up\n the latest upstream fixes.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "3d26dcf7679c5cc6c9f3b95ffdb2152fba2b7fae", "tree": "4d2b6f5e36a20ed02021a1956b53a5ef6d6f8932", "parents": [ "4cafbd0b94d2c8cae6ede6d1c3ab90547547a3d2" ], "author": { "name": "Andi Kleen", "email": "andi@firstfloor.org", "time": "Mon Apr 13 14:40:08 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 13 15:04:32 2009 -0700" }, "message": "kernel/sys.c: clean up sys_shutdown exit path\n\nImpact: cleanup, fix\n\nClean up sys_shutdown() exit path. Factor out common code. Return\ncorrect error code instead of always 0 on failure.\n\nSigned-off-by: Andi Kleen \u003cak@linux.intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f541ae326fa120fa5c57433e4d9a133df212ce41", "tree": "bdbd94ec72cfc601118051cb35e8617d55510177", "parents": [ "e255357764f92afcafafbd4879b222b8c752065a", "0221c81b1b8eb0cbb6b30a0ced52ead32d2b4e4c" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Apr 06 09:02:57 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Apr 06 09:02:57 2009 +0200" }, "message": "Merge branch \u0027linus\u0027 into perfcounters/core-v2\n\nMerge reason: we have gathered quite a few conflicts, need to merge upstream\n\nConflicts:\n\tarch/powerpc/kernel/Makefile\n\tarch/x86/ia32/ia32entry.S\n\tarch/x86/include/asm/hardirq.h\n\tarch/x86/include/asm/unistd_32.h\n\tarch/x86/include/asm/unistd_64.h\n\tarch/x86/kernel/cpu/common.c\n\tarch/x86/kernel/irq.c\n\tarch/x86/kernel/syscall_table_32.S\n\tarch/x86/mm/iomap_32.c\n\tinclude/linux/sched.h\n\tkernel/Makefile\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\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": "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": "8163d88c79dca35478a2405c837733ac50ea4c39", "tree": "6acae066a09b7dcbedab4a35ad62eba4ba3fd83c", "parents": [ "a1ef58f442542d8b3e3b963339fbc522c36e827c", "fec6c6fec3e20637bee5d276fb61dd8b49a3f9cc" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 04 11:42:31 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 04 11:42:31 2009 +0100" }, "message": "Merge commit \u0027v2.6.29-rc7\u0027 into perfcounters/core\n\nConflicts:\n\tarch/x86/mm/iomap_32.c\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": "95fd4845ed0ffcab305b4f30ce1c12dc34f1b56c", "tree": "aa2aac22a5b329b778a6771a87bbf1945ad49bbd", "parents": [ "d278c48435625cb6b7edcf6a547620768b175709", "8e4921515c1a379539607eb443d51c30f4f7f338" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Feb 11 09:22:04 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Feb 11 09:22:04 2009 +0100" }, "message": "Merge commit \u0027v2.6.29-rc4\u0027 into perfcounters/core\n\nConflicts:\n\tarch/x86/kernel/setup_percpu.c\n\tarch/x86/mm/fault.c\n\tdrivers/acpi/processor_idle.c\n\tkernel/irq/handle.c\n" }, { "commit": "60fd760fb9ff7034360bab7137c917c0330628c2", "tree": "2498b0456b49dc0f4e7db34a9c1d3858e2b5eaf9", "parents": [ "a68e61e8ff2d46327a37b69056998b47745db6fa" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Wed Feb 04 15:12:06 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Feb 05 12:56:47 2009 -0800" }, "message": "revert \"rlimit: permit setting RLIMIT_NOFILE to RLIM_INFINITY\"\n\nRevert commit 0c2d64fb6cae9aae480f6a46cfe79f8d7d48b59f because it causes\n(arguably poorly designed) existing userspace to spend interminable\nperiods closing billions of not-open file descriptors.\n\nWe could bring this back, with some sort of opt-in tunable in /proc, which\ndefaults to \"off\".\n\nPeter\u0027s alanysis follows:\n\n: I spent several hours trying to get to the bottom of a serious\n: performance issue that appeared on one of our servers after upgrading to\n: 2.6.28. In the end it\u0027s what could be considered a userspace bug that\n: was triggered by a change in 2.6.28. Since this might also affect other\n: people I figured I\u0027d at least document what I found here, and maybe we\n: can even do something about it:\n:\n:\n: So, I upgraded some of debian.org\u0027s machines to 2.6.28.1 and immediately\n: the team maintaining our ftp archive complained that one of their\n: scripts that previously ran in a few minutes still hadn\u0027t even come\n: close to being done after an hour or so. Downgrading to 2.6.27 fixed\n: that.\n:\n: Turns out that script is forking a lot and something in it or python or\n: whereever closes all the file descriptors it doesn\u0027t want to pass on.\n: That is, it starts at zero and goes up to ulimit -n/RLIMIT_NOFILE and\n: closes them all with a few exceptions.\n:\n: Turns out that takes a long time when your limit -n is now 2^20 (1048576).\n:\n: With 2.6.27.* the ulimit -n was the standard 1024, but with 2.6.28 it is\n: now a thousand times that.\n:\n: 2.6.28 included a patch titled \"rlimit: permit setting RLIMIT_NOFILE to\n: RLIM_INFINITY\" (0c2d64fb6cae9aae480f6a46cfe79f8d7d48b59f)[1] that\n: allows, as the title implies, to set the limit for number of files to\n: infinity.\n:\n: Closer investigation showed that the broken default ulimit did not apply\n: to \"system\" processes (like stuff started from init). In the end I\n: could establish that all processes that passed through pam_limit at one\n: point had the bad resource limit.\n:\n: Apparently the pam library in Debian etch (4.0) initializes the limits\n: to some default values when it doesn\u0027t have any settings in limit.conf\n: to override them. Turns out that for nofiles this is RLIM_INFINITY.\n: Commenting out \"case RLIMIT_NOFILE\" in pam_limit.c:267 of our pam\n: package version 0.79-5 fixes that - tho I\u0027m not sure what side effects\n: that has.\n:\n: Debian lenny (the upcoming 5.0 version) doesn\u0027t have this issue as it\n: uses a different pam (version).\n\nReported-by: Peter Palfrader \u003cweasel@debian.org\u003e\nCc: Adam Tkac \u003cvonsch@gmail.com\u003e\nCc: Michael Kerrisk \u003cmtk.manpages@googlemail.com\u003e\nCc: \u003cstable@kernel.org\u003e\t\t[2.6.28.x]\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "77835492ed489c0b870f82f4c50687bd267acc0a", "tree": "d80903ce1b8dd30aa44ccfc756616ad4d6c74d63", "parents": [ "af37501c792107c2bde1524bdae38d9a247b841a", "1de9e8e70f5acc441550ca75433563d91b269bbe" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 21 16:37:27 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 21 16:37:27 2009 +0100" }, "message": "Merge commit \u0027v2.6.29-rc2\u0027 into perfcounters/core\n\nConflicts:\n\tinclude/linux/syscalls.h\n" }, { "commit": "836f92adf121f806e9beb5b6b88bd5c9c4ea3f24", "tree": "0deccad6d01b7761a8d96cbc12b8e9541317380e", "parents": [ "6559eed8ca7db0531a207cd80be5e28cd6f213c5" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed Jan 14 14:14:33 2009 +0100" }, "committer": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed Jan 14 14:15:31 2009 +0100" }, "message": "[CVE-2009-0029] System call wrappers part 31\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\n" }, { "commit": "c4ea37c26a691ad0b7e86aa5884aab27830e95c9", "tree": "4a3bd25e61cd3782f535ad2140a01bf3835dca4f", "parents": [ "d5460c9974a321a194aded4a8c4daaac68ea8171" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed Jan 14 14:14:28 2009 +0100" }, "committer": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed Jan 14 14:15:29 2009 +0100" }, "message": "[CVE-2009-0029] System call wrappers part 26\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\n" }, { "commit": "e48fbb699f82ef1e80bd7126046394d2dc9ca7e6", "tree": "d361155949c3c31724946a6d619ece7a093e30a1", "parents": [ "5a8a82b1d306a325d899b67715618413657efda4" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed Jan 14 14:14:26 2009 +0100" }, "committer": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed Jan 14 14:15:28 2009 +0100" }, "message": "[CVE-2009-0029] System call wrappers part 24\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\n" }, { "commit": "5a8a82b1d306a325d899b67715618413657efda4", "tree": "ac599eb041a3cdcbbb3ba0a67ff2f14e251371f5", "parents": [ "3e0fa65f8ba4fd24b3dcfaf14d5b15eaab0fdc61" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed Jan 14 14:14:25 2009 +0100" }, "committer": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed Jan 14 14:15:28 2009 +0100" }, "message": "[CVE-2009-0029] System call wrappers part 23\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\n" }, { "commit": "754fe8d297bfae7b77f7ce866e2fb0c5fb186506", "tree": "b2650f728d50791fa86ecd8c49806f51db714bd4", "parents": [ "5add95d4f7cf08f6f62510f19576992912387501" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed Jan 14 14:14:09 2009 +0100" }, "committer": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed Jan 14 14:15:20 2009 +0100" }, "message": "[CVE-2009-0029] System call wrappers part 07\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\n" }, { "commit": "b290ebe2c46d01b742b948ce03f09e8a3efb9a92", "tree": "4419602f911a8205de2160c56a0ff844f350557e", "parents": [ "ae1251ab785f6da87219df8352ffdac68bba23e4" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed Jan 14 14:14:06 2009 +0100" }, "committer": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed Jan 14 14:15:19 2009 +0100" }, "message": "[CVE-2009-0029] System call wrappers part 04\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\n" }, { "commit": "ae1251ab785f6da87219df8352ffdac68bba23e4", "tree": "8a37770a08b78f8c184764f34cf8455c894ce117", "parents": [ "dbf040d9d1cbf1ef6250bdb095c5c118950bcde8" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed Jan 14 14:14:05 2009 +0100" }, "committer": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed Jan 14 14:15:19 2009 +0100" }, "message": "[CVE-2009-0029] System call wrappers part 03\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\n" }, { "commit": "dbf040d9d1cbf1ef6250bdb095c5c118950bcde8", "tree": "4e09682734b04601b06660e513e67ba0eb062e55", "parents": [ "58fd3aa288939d3097fa04505b25c2f5e6e144d1" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed Jan 14 14:14:04 2009 +0100" }, "committer": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed Jan 14 14:15:19 2009 +0100" }, "message": "[CVE-2009-0029] System call wrappers part 02\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\n" }, { "commit": "58fd3aa288939d3097fa04505b25c2f5e6e144d1", "tree": "73d65d8494f80884c765265d78496fba6ef00784", "parents": [ "6673e0c3fbeaed2cd08e2fd4a4aa97382d6fedb0" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed Jan 14 14:14:03 2009 +0100" }, "committer": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed Jan 14 14:15:18 2009 +0100" }, "message": "[CVE-2009-0029] System call wrappers part 01\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\n" }, { "commit": "506c10f26c481b7f8ef27c1c79290f68989b2e9e", "tree": "03de82e812f00957aa6276dac2fe51c3358e88d7", "parents": [ "e1df957670aef74ffd9a4ad93e6d2c90bf6b4845", "c59765042f53a79a7a65585042ff463b69cb248c" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Jan 11 02:42:53 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Jan 11 02:42:53 2009 +0100" }, "message": "Merge commit \u0027v2.6.29-rc1\u0027 into perfcounters/core\n\nConflicts:\n\tinclude/linux/kernel_stat.h\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": "e3d5a27d5862b6425d0879272e24abecf7245105", "tree": "c8a873e926d4768ae2ecac50c46c5121c8472876", "parents": [ "af9379c7121d5543722c00bbd1adf7dcaa0b6448" ], "author": { "name": "Paul Mackerras", "email": "paulus@samba.org", "time": "Tue Jan 06 14:41:02 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 06 15:59:13 2009 -0800" }, "message": "Allow times and time system calls to return small negative values\n\nAt the moment, the times() system call will appear to fail for a period\nshortly after boot, while the value it want to return is between -4095 and\n-1. The same thing will also happen for the time() system call on 32-bit\nplatforms some time in 2106 or so.\n\nOn some platforms, such as x86, this is unavoidable because of the system\ncall ABI, but other platforms such as powerpc have a separate error\nindication from the return value, so system calls can in fact return small\nnegative values without indicating an error. On those platforms,\nforce_successful_syscall_return() provides a way to indicate that the\nsystem call return value should not be treated as an error even if it is\nin the range which would normally be taken as a negative error number.\n\nThis adds a force_successful_syscall_return() call to the time() and\ntimes() system calls plus their 32-bit compat versions, so that they don\u0027t\nerroneously indicate an error on those platforms whose system call ABI has\na separate error indication. This will not affect anything on other\nplatforms.\n\nJoakim Tjernlund added the fix for time() and the compat versions of\ntime() and times(), after I did the fix for times().\n\nSigned-off-by: Joakim Tjernlund \u003cJoakim.Tjernlund@transmode.se\u003e\nSigned-off-by: Paul Mackerras \u003cpaulus@samba.org\u003e\nAcked-by: David S. Miller \u003cdavem@davemloft.net\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8916edef5888c5d8fe283714416a9ca95b4c3431", "tree": "5a46ef3616ce5cc869c6ba39e342cd71b390f313", "parents": [ "0a582440ff546e2c6610d1acec325e91b4efd313" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Sun Jan 04 05:40:37 2009 +0900" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Jan 04 14:04:00 2009 +0100" }, "message": "getrusage: RUSAGE_THREAD should return ru_utime and ru_stime\n\nImpact: task stats regression fix\n\nOriginal getrusage(RUSAGE_THREAD) implementation can return ru_utime and\nru_stime. But commit \"f06febc: timers: fix itimer/many thread hang\" broke it.\n\nthis patch restores it.\n\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "5f34fe1cfc1bdd8b4711bbe37421fba4ed0d1ed4", "tree": "85b21c8bb0e53005bd970d648ca093acfd0584a3", "parents": [ "eca1bf5b4fab56d2feb1572d34d59fcd92ea7df3", "6638101c1124c19c8a65b1645e4ecd09e0572f3e" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Dec 30 16:10:19 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Dec 30 16:10:19 2008 -0800" }, "message": "Merge branch \u0027core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (63 commits)\n stacktrace: provide save_stack_trace_tsk() weak alias\n rcu: provide RCU options on non-preempt architectures too\n printk: fix discarding message when recursion_bug\n futex: clean up futex_(un)lock_pi fault handling\n \"Tree RCU\": scalable classic RCU implementation\n futex: rename field in futex_q to clarify single waiter semantics\n x86/swiotlb: add default swiotlb_arch_range_needs_mapping\n x86/swiotlb: add default phys\u003c-\u003ebus conversion\n x86: unify pci iommu setup and allow swiotlb to compile for 32 bit\n x86: add swiotlb allocation functions\n swiotlb: consolidate swiotlb info message printing\n swiotlb: support bouncing of HighMem pages\n swiotlb: factor out copy to/from device\n swiotlb: add arch hook to force mapping\n swiotlb: allow architectures to override phys\u003c-\u003ebus\u003c-\u003ephys conversions\n swiotlb: add comment where we handle the overflow of a dma mask on 32 bit\n rcu: fix rcutorture behavior during reboot\n resources: skip sanity check of busy resources\n swiotlb: move some definitions to header\n swiotlb: allow architectures to override swiotlb pool allocation\n ...\n\nFix up trivial conflicts in\n arch/x86/kernel/Makefile\n arch/x86/mm/init_32.c\n include/linux/hardirq.h\nas per Ingo\u0027s suggestions.\n" }, { "commit": "e1df957670aef74ffd9a4ad93e6d2c90bf6b4845", "tree": "bca1fcfef55b3e3e82c9a822b4ac6428fce2b419", "parents": [ "2b583d8bc8d7105b58d7481a4a0ceb718dac49c6", "3c92ec8ae91ecf59d88c798301833d7cf83f2179" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Dec 29 09:45:15 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Dec 29 09:45:15 2008 +0100" }, "message": "Merge branch \u0027linus\u0027 into perfcounters/core\n\nConflicts:\n\tfs/exec.c\n\tinclude/linux/init_task.h\n\nSimple context conflicts.\n" }, { "commit": "1d1c7ddbfab358445a542715551301b7fc363e28", "tree": "d4421834d109b206f39c2019ea039fd42ed22e1d", "parents": [ "bae43c9945ebeef15e7952e317efb02393d3bfc7" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Dec 11 14:59:31 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Dec 11 15:45:55 2008 +0100" }, "message": "perf counters: add prctl interface to disable/enable counters\n\nAdd a way for self-monitoring tasks to disable/enable counters summarily,\nvia a prctl:\n\n\tPR_TASK_PERF_COUNTERS_DISABLE\t\t31\n\tPR_TASK_PERF_COUNTERS_ENABLE\t\t32\n\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": "2b5fe6de58276d0b5a7c884d5dbfc300ca47db78", "tree": "02cc368e46a795bd2c0162d278f9c5549f4e1e5a", "parents": [ "ce394471d13bf071939a9a0b48c64c297676d233" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Mon Nov 17 15:40:08 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Nov 17 16:55:55 2008 +0100" }, "message": "thread_group_cputime: move a couple of callsites outside of -\u003esiglock\n\nImpact: relax the locking of cpu-time accounting calls\n\n-\u003esiglock buys nothing for thread_group_cputime() in do_sys_times() and\nwait_task_zombie() (which btw takes the unrelated parent\u0027s -\u003esiglock).\n\nActually I think do_sys_times() doesn\u0027t need -\u003esiglock at all.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "d84f4f992cbd76e8f39c488cf0c5d123843923b1", "tree": "fc4a0349c42995715b93d0f7a3c78e9ea9b3f36e", "parents": [ "745ca2475a6ac596e3d8d37c2759c0fbe2586227" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Fri Nov 14 10:39:23 2008 +1100" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Fri Nov 14 10:39:23 2008 +1100" }, "message": "CRED: Inaugurate COW credentials\n\nInaugurate copy-on-write credentials management. This uses RCU to manage the\ncredentials pointer in the task_struct with respect to accesses by other tasks.\nA process may only modify its own credentials, and so does not need locking to\naccess or modify its own credentials.\n\nA mutex (cred_replace_mutex) is added to the task_struct to control the effect\nof PTRACE_ATTACHED on credential calculations, particularly with respect to\nexecve().\n\nWith this patch, the contents of an active credentials struct may not be\nchanged directly; rather a new set of credentials must be prepared, modified\nand committed using something like the following sequence of events:\n\n\tstruct cred *new \u003d prepare_creds();\n\tint ret \u003d blah(new);\n\tif (ret \u003c 0) {\n\t\tabort_creds(new);\n\t\treturn ret;\n\t}\n\treturn commit_creds(new);\n\nThere are some exceptions to this rule: the keyrings pointed to by the active\ncredentials may be instantiated - keyrings violate the COW rule as managing\nCOW keyrings is tricky, given that it is possible for a task to directly alter\nthe keys in a keyring in use by another task.\n\nTo help enforce this, various pointers to sets of credentials, such as those in\nthe task_struct, are declared const. The purpose of this is compile-time\ndiscouragement of altering credentials through those pointers. Once a set of\ncredentials has been made public through one of these pointers, it may not be\nmodified, except under special circumstances:\n\n (1) Its reference count may incremented and decremented.\n\n (2) The keyrings to which it points may be modified, but not replaced.\n\nThe only safe way to modify anything else is to create a replacement and commit\nusing the functions described in Documentation/credentials.txt (which will be\nadded by a later patch).\n\nThis patch and the preceding patches have been tested with the LTP SELinux\ntestsuite.\n\nThis patch makes several logical sets of alteration:\n\n (1) execve().\n\n This now prepares and commits credentials in various places in the\n security code rather than altering the current creds directly.\n\n (2) Temporary credential overrides.\n\n do_coredump() and sys_faccessat() now prepare their own credentials and\n temporarily override the ones currently on the acting thread, whilst\n preventing interference from other threads by holding cred_replace_mutex\n on the thread being dumped.\n\n This will be replaced in a future patch by something that hands down the\n credentials directly to the functions being called, rather than altering\n the task\u0027s objective credentials.\n\n (3) LSM interface.\n\n A number of functions have been changed, added or removed:\n\n (*) security_capset_check(), -\u003ecapset_check()\n (*) security_capset_set(), -\u003ecapset_set()\n\n \t Removed in favour of security_capset().\n\n (*) security_capset(), -\u003ecapset()\n\n \t New. This is passed a pointer to the new creds, a pointer to the old\n \t creds and the proposed capability sets. It should fill in the new\n \t creds or return an error. All pointers, barring the pointer to the\n \t new creds, are now const.\n\n (*) security_bprm_apply_creds(), -\u003ebprm_apply_creds()\n\n \t Changed; now returns a value, which will cause the process to be\n \t killed if it\u0027s an error.\n\n (*) security_task_alloc(), -\u003etask_alloc_security()\n\n \t Removed in favour of security_prepare_creds().\n\n (*) security_cred_free(), -\u003ecred_free()\n\n \t New. Free security data attached to cred-\u003esecurity.\n\n (*) security_prepare_creds(), -\u003ecred_prepare()\n\n \t New. Duplicate any security data attached to cred-\u003esecurity.\n\n (*) security_commit_creds(), -\u003ecred_commit()\n\n \t New. Apply any security effects for the upcoming installation of new\n \t security by commit_creds().\n\n (*) security_task_post_setuid(), -\u003etask_post_setuid()\n\n \t Removed in favour of security_task_fix_setuid().\n\n (*) security_task_fix_setuid(), -\u003etask_fix_setuid()\n\n \t Fix up the proposed new credentials for setuid(). This is used by\n \t cap_set_fix_setuid() to implicitly adjust capabilities in line with\n \t setuid() changes. Changes are made to the new credentials, rather\n \t than the task itself as in security_task_post_setuid().\n\n (*) security_task_reparent_to_init(), -\u003etask_reparent_to_init()\n\n \t Removed. Instead the task being reparented to init is referred\n \t directly to init\u0027s credentials.\n\n\t NOTE! This results in the loss of some state: SELinux\u0027s osid no\n\t longer records the sid of the thread that forked it.\n\n (*) security_key_alloc(), -\u003ekey_alloc()\n (*) security_key_permission(), -\u003ekey_permission()\n\n \t Changed. These now take cred pointers rather than task pointers to\n \t refer to the security context.\n\n (4) sys_capset().\n\n This has been simplified and uses less locking. The LSM functions it\n calls have been merged.\n\n (5) reparent_to_kthreadd().\n\n This gives the current thread the same credentials as init by simply using\n commit_thread() to point that way.\n\n (6) __sigqueue_alloc() and switch_uid()\n\n __sigqueue_alloc() can\u0027t stop the target task from changing its creds\n beneath it, so this function gets a reference to the currently applicable\n user_struct which it then passes into the sigqueue struct it returns if\n successful.\n\n switch_uid() is now called from commit_creds(), and possibly should be\n folded into that. commit_creds() should take care of protecting\n __sigqueue_alloc().\n\n (7) [sg]et[ug]id() and co and [sg]et_current_groups.\n\n The set functions now all use prepare_creds(), commit_creds() and\n abort_creds() to build and check a new set of credentials before applying\n it.\n\n security_task_set[ug]id() is called inside the prepared section. This\n guarantees that nothing else will affect the creds until we\u0027ve finished.\n\n The calling of set_dumpable() has been moved into commit_creds().\n\n Much of the functionality of set_user() has been moved into\n commit_creds().\n\n The get functions all simply access the data directly.\n\n (8) security_task_prctl() and cap_task_prctl().\n\n security_task_prctl() has been modified to return -ENOSYS if it doesn\u0027t\n want to handle a function, or otherwise return the return value directly\n rather than through an argument.\n\n Additionally, cap_task_prctl() now prepares a new set of credentials, even\n if it doesn\u0027t end up using it.\n\n (9) Keyrings.\n\n A number of changes have been made to the keyrings code:\n\n (a) switch_uid_keyring(), copy_keys(), exit_keys() and suid_keys() have\n \t all been dropped and built in to the credentials functions directly.\n \t They may want separating out again later.\n\n (b) key_alloc() and search_process_keyrings() now take a cred pointer\n \t rather than a task pointer to specify the security context.\n\n (c) copy_creds() gives a new thread within the same thread group a new\n \t thread keyring if its parent had one, otherwise it discards the thread\n \t keyring.\n\n (d) The authorisation key now points directly to the credentials to extend\n \t the search into rather pointing to the task that carries them.\n\n (e) Installing thread, process or session keyrings causes a new set of\n \t credentials to be created, even though it\u0027s not strictly necessary for\n \t process or session keyrings (they\u0027re shared).\n\n(10) Usermode helper.\n\n The usermode helper code now carries a cred struct pointer in its\n subprocess_info struct instead of a new session keyring pointer. This set\n of credentials is derived from init_cred and installed on the new process\n after it has been cloned.\n\n call_usermodehelper_setup() allocates the new credentials and\n call_usermodehelper_freeinfo() discards them if they haven\u0027t been used. A\n special cred function (prepare_usermodeinfo_creds()) is provided\n specifically for call_usermodehelper_setup() to call.\n\n call_usermodehelper_setkeys() adjusts the credentials to sport the\n supplied keyring as the new session keyring.\n\n(11) SELinux.\n\n SELinux has a number of changes, in addition to those to support the LSM\n interface changes mentioned above:\n\n (a) selinux_setprocattr() no longer does its check for whether the\n \t current ptracer can access processes with the new SID inside the lock\n \t that covers getting the ptracer\u0027s SID. Whilst this lock ensures that\n \t the check is done with the ptracer pinned, the result is only valid\n \t until the lock is released, so there\u0027s no point doing it inside the\n \t lock.\n\n(12) is_single_threaded().\n\n This function has been extracted from selinux_setprocattr() and put into\n a file of its own in the lib/ directory as join_session_keyring() now\n wants to use it too.\n\n The code in SELinux just checked to see whether a task shared mm_structs\n with other tasks (CLONE_VM), but that isn\u0027t good enough. We really want\n to know if they\u0027re part of the same thread group (CLONE_THREAD).\n\n(13) nfsd.\n\n The NFS server daemon now has to use the COW credentials to set the\n credentials it is going to use. It really needs to pass the credentials\n down to the functions it calls, but it can\u0027t do that until other patches\n in this series have been applied.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: James Morris \u003cjmorris@namei.org\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "c69e8d9c01db2adc503464993c358901c9af9de4", "tree": "bed94aaa9aeb7a7834d1c880f72b62a11a752c78", "parents": [ "86a264abe542cfececb4df129bc45a0338d8cdb9" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Fri Nov 14 10:39:19 2008 +1100" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Fri Nov 14 10:39:19 2008 +1100" }, "message": "CRED: Use RCU to access another task\u0027s creds and to release a task\u0027s own creds\n\nUse RCU to access another task\u0027s creds and to release a task\u0027s own creds.\nThis means that it will be possible for the credentials of a task to be\nreplaced without another task (a) requiring a full lock to read them, and (b)\nseeing deallocated memory.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: James Morris \u003cjmorris@namei.org\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "86a264abe542cfececb4df129bc45a0338d8cdb9", "tree": "30152f04ba847f311028d5ca697f864c16c7ebb3", "parents": [ "f1752eec6145c97163dbce62d17cf5d928e28a27" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Fri Nov 14 10:39:18 2008 +1100" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Fri Nov 14 10:39:18 2008 +1100" }, "message": "CRED: Wrap current-\u003ecred and a few other accessors\n\nWrap current-\u003ecred and a few other accessors to hide their actual\nimplementation.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: James Morris \u003cjmorris@namei.org\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "b6dff3ec5e116e3af6f537d4caedcad6b9e5082a", "tree": "9e76f972eb7ce9b84e0146c8e4126a3f86acb428", "parents": [ "15a2460ed0af7538ca8e6c610fe607a2cd9da142" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Fri Nov 14 10:39:16 2008 +1100" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Fri Nov 14 10:39:16 2008 +1100" }, "message": "CRED: Separate task security context from task_struct\n\nSeparate the task security context from task_struct. At this point, the\nsecurity data is temporarily embedded in the task_struct with two pointers\npointing to it.\n\nNote that the Alpha arch is altered as it refers to (E)UID and (E)GID in\nentry.S via asm-offsets.\n\nWith comment fixes Signed-off-by: Marc Dionne \u003cmarc.c.dionne@gmail.com\u003e\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: James Morris \u003cjmorris@namei.org\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "76aac0e9a17742e60d408be1a706e9aaad370891", "tree": "e873a000d9c96209726e0958e311f005c13b2ed5", "parents": [ "b103c59883f1ec6e4d548b25054608cb5724453c" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Fri Nov 14 10:39:12 2008 +1100" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Fri Nov 14 10:39:12 2008 +1100" }, "message": "CRED: Wrap task credential accesses in the core kernel\n\nWrap access to task credentials so that they can be separated more easily from\nthe task_struct during the introduction of COW creds.\n\nChange most current-\u003e(|e|s|fs)[ug]id to current_(|e|s|fs)[ug]id().\n\nChange some task-\u003ee?[ug]id to task_e?[ug]id(). In some places it makes more\nsense to use RCU directly rather than a convenient wrapper; these will be\naddressed by later patches.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nReviewed-by: James Morris \u003cjmorris@namei.org\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: linux-audit@redhat.com\nCc: containers@lists.linux-foundation.org\nCc: linux-mm@kvack.org\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "268a3dcfea2077fca60d3715caa5c96f9b5e6ea7", "tree": "c2232774508424e677e27f296090a68c775e4669", "parents": [ "c4bd822e7b12a9008241d76db45b665f2fef180c", "592aa999d6a272856c9bfbdaac0cfba1bb37c24c" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Oct 22 09:48:06 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Oct 22 09:48:06 2008 +0200" }, "message": "Merge branch \u0027timers/range-hrtimers\u0027 into v28-range-hrtimers-for-linus-v2\n\nConflicts:\n\n\tkernel/time/tick-sched.c\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "c465a76af658b443075d6efee1c3131257643020", "tree": "63c28c9fab02dedec7f03cee4a3ef7fe4dc1c072", "parents": [ "2d42244ae71d6c7b0884b5664cf2eda30fb2ae68", "1b02469088ac7a13d7e622b618b7410d0f1ce5ec", "fb02fbc14d17837b4b7b02dbb36142c16a7bf208", "d40e944c25fb4642adb2a4c580a48218a9f3f824", "1508487e7f16d992ad23cabd3712563ff912f413", "322acf6585f3c4e82ee32a246b0483ca0f6ad3f4" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Oct 20 13:14:06 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Oct 20 13:14:06 2008 +0200" }, "message": "Merge branches \u0027timers/clocksource\u0027, \u0027timers/hrtimers\u0027, \u0027timers/nohz\u0027, \u0027timers/ntp\u0027, \u0027timers/posixtimers\u0027 and \u0027timers/debug\u0027 into v28-timers-for-linus\n" }, { "commit": "651dab4264e4ba0e563f5ff56f748127246e9065", "tree": "016630974bdcb00fe529b673f96d389e0fd6dc94", "parents": [ "40b8606253552109815786e5d4b0de98782d31f5", "2e532d68a2b3e2aa6b19731501222069735c741c" ], "author": { "name": "Arjan van de Ven", "email": "arjan@linux.intel.com", "time": "Fri Oct 17 09:20:26 2008 -0700" }, "committer": { "name": "Arjan van de Ven", "email": "arjan@linux.intel.com", "time": "Fri Oct 17 09:20:26 2008 -0700" }, "message": "Merge commit \u0027linus/master\u0027 into merge-linus\n\nConflicts:\n\n\tarch/x86/kvm/i8254.c\n" }, { "commit": "9679e4dd628743b9ef4375d60ae69923c3766173", "tree": "03d491b6dbcc66079d4015c585f156fc4d94c2ea", "parents": [ "87988815073918134c0dae059cf247a4472d78ed" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Wed Oct 15 22:01:51 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 16 11:21:31 2008 -0700" }, "message": "kernel/sys.c: improve code generation\n\nutsname() is quite expensive to calculate. Cache it in a local.\n\n text data bss dec hex filename\nbefore: 11136 720 16 11872 2e60 kernel/sys.o\nafter: 11096 720 16 11832 2e38 kernel/sys.o\n\nAcked-by: Vegard Nossum \u003cvegard.nossum@gmail.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nAcked-by: \"Serge E. Hallyn\" \u003cserue@us.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": "87988815073918134c0dae059cf247a4472d78ed", "tree": "dbab51efdb95de92bbfb585dd1a90c49061e7cdf", "parents": [ "929f37cb3c3e0f4d23d7106693b7067cf72f4dbc" ], "author": { "name": "Vegard Nossum", "email": "vegard.nossum@gmail.com", "time": "Wed Oct 15 22:01:51 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 16 11:21:31 2008 -0700" }, "message": "utsname: completely overwrite prior information\n\nOn sethostname() and setdomainname(), previous information may be retained\nif it was longer than than the new hostname/domainname.\n\nThis can be demonstrated trivially by calling sethostname() first with a\nlong name, then with a short name, and then calling uname() to retrieve\nthe full buffer that contains the hostname (and possibly parts of the old\nhostname), one just has to look past the terminating zero.\n\nI don\u0027t know if we should really care that much (hence the RFC); the only\nscenarios I can possibly think of is administrator putting something\nsensitive in the hostname (or domain name) by accident, and changing it\nback will not undo the mistake entirely, though it\u0027s not like we can\nrecover gracefully from \"rm -rf /\" either... The other scenario is\nnamespaces (CLONE_NEWUTS) where some information may be unintentionally\n\"inherited\" from the previous namespace (a program wants to hide the\noriginal name and does clone + sethostname, but some information is still\nleft).\n\nI think the patch may be defended on grounds of the principle of least\nsurprise. But I am not adamant :-)\n\n(I guess the question now is whether userspace should be able to\nwrite embedded NULs into the buffer or not...)\n\nAt least the observation has been made and the patch has been presented.\n\nSigned-off-by: Vegard Nossum \u003cvegard.nossum@gmail.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: \"Serge E. Hallyn\" \u003cserue@us.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": "0c2d64fb6cae9aae480f6a46cfe79f8d7d48b59f", "tree": "f0080c63a78a021cc3404e12e205e3b82e982427", "parents": [ "b4236f81f2347096df650fb072f50d67bb6066a2" ], "author": { "name": "Adam Tkac", "email": "vonsch@gmail.com", "time": "Wed Oct 15 22:01:45 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 16 11:21:31 2008 -0700" }, "message": "rlimit: permit setting RLIMIT_NOFILE to RLIM_INFINITY\n\nWhen a process wants to set the limit of open files to RLIM_INFINITY it\ngets EPERM even if it has CAP_SYS_RESOURCE capability.\n\nFor example, BIND does:\n\n...\n#elif defined(NR_OPEN) \u0026\u0026 defined(__linux__)\n /*\n * Some Linux kernels don\u0027t accept RLIM_INFINIT; the maximum\n * possible value is the NR_OPEN defined in linux/fs.h.\n */\n if (resource \u003d\u003d isc_resource_openfiles \u0026\u0026 rlim_value \u003d\u003d RLIM_INFINITY) {\n rl.rlim_cur \u003d rl.rlim_max \u003d NR_OPEN;\n unixresult \u003d setrlimit(unixresource, \u0026rl);\n if (unixresult \u003d\u003d 0)\n return (ISC_R_SUCCESS);\n }\n#elif ...\n\nIf we allow setting RLIMIT_NOFILE to RLIM_INFINITY we increase portability\n- you don\u0027t have to check if OS is linux and then use different schema for\nlimits.\n\nThe spec says \"Specifying RLIM_INFINITY as any resource limit value on a\nsuccessful call to setrlimit() shall inhibit enforcement of that resource\nlimit.\" and we\u0027re presently not doing that.\n\nCc: Michael Kerrisk \u003cmtk.manpages@googlemail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "9c9f4ded90a59eee84e15f5fd38c03d60184e112", "tree": "925a7f7c30136477b3f8551123fd86b355fd60fb", "parents": [ "348eb12e5598be97400c749d3d93a71856ae0b2b" ], "author": { "name": "Alan Cox", "email": "alan@redhat.com", "time": "Mon Oct 13 10:37:26 2008 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 13 09:51:40 2008 -0700" }, "message": "tty: Add a kref count\n\nIntroduce a kref to the tty structure and use it to protect the tty-\u003esignal\ntty references. For now we don\u0027t introduce it for anything else.\n\nSigned-off-by: Alan Cox \u003calan@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f06febc96ba8e0af80bcc3eaec0a109e88275fac", "tree": "46dba9432ef25d2eae9434ff2df638c7a268c0f1", "parents": [ "6bfb09a1005193be5c81ebac9f3ef85210142650" ], "author": { "name": "Frank Mayhar", "email": "fmayhar@google.com", "time": "Fri Sep 12 09:54:39 2008 -0700" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Sep 14 16:25:35 2008 +0200" }, "message": "timers: fix itimer/many thread hang\n\nOverview\n\nThis patch reworks the handling of POSIX CPU timers, including the\nITIMER_PROF, ITIMER_VIRT timers and rlimit handling. It was put together\nwith the help of Roland McGrath, the owner and original writer of this code.\n\nThe problem we ran into, and the reason for this rework, has to do with using\na profiling timer in a process with a large number of threads. It appears\nthat the performance of the old implementation of run_posix_cpu_timers() was\nat least O(n*3) (where \"n\" is the number of threads in a process) or worse.\nEverything is fine with an increasing number of threads until the time taken\nfor that routine to run becomes the same as or greater than the tick time, at\nwhich point things degrade rather quickly.\n\nThis patch fixes bug 9906, \"Weird hang with NPTL and SIGPROF.\"\n\nCode Changes\n\nThis rework corrects the implementation of run_posix_cpu_timers() to make it\nrun in constant time for a particular machine. (Performance may vary between\none machine and another depending upon whether the kernel is built as single-\nor multiprocessor and, in the latter case, depending upon the number of\nrunning processors.) To do this, at each tick we now update fields in\nsignal_struct as well as task_struct. The run_posix_cpu_timers() function\nuses those fields to make its decisions.\n\nWe define a new structure, \"task_cputime,\" to contain user, system and\nscheduler times and use these in appropriate places:\n\nstruct task_cputime {\n\tcputime_t utime;\n\tcputime_t stime;\n\tunsigned long long sum_exec_runtime;\n};\n\nThis is included in the structure \"thread_group_cputime,\" which is a new\nsubstructure of signal_struct and which varies for uniprocessor versus\nmultiprocessor kernels. For uniprocessor kernels, it uses \"task_cputime\" as\na simple substructure, while for multiprocessor kernels it is a pointer:\n\nstruct thread_group_cputime {\n\tstruct task_cputime totals;\n};\n\nstruct thread_group_cputime {\n\tstruct task_cputime *totals;\n};\n\nWe also add a new task_cputime substructure directly to signal_struct, to\ncache the earliest expiration of process-wide timers, and task_cputime also\nreplaces the it_*_expires fields of task_struct (used for earliest expiration\nof thread timers). The \"thread_group_cputime\" structure contains process-wide\ntimers that are updated via account_user_time() and friends. In the non-SMP\ncase the structure is a simple aggregator; unfortunately in the SMP case that\nsimplicity was not achievable due to cache-line contention between CPUs (in\none measured case performance was actually _worse_ on a 16-cpu system than\nthe same test on a 4-cpu system, due to this contention). For SMP, the\nthread_group_cputime counters are maintained as a per-cpu structure allocated\nusing alloc_percpu(). The timer functions update only the timer field in\nthe structure corresponding to the running CPU, obtained using per_cpu_ptr().\n\nWe define a set of inline functions in sched.h that we use to maintain the\nthread_group_cputime structure and hide the differences between UP and SMP\nimplementations from the rest of the kernel. The thread_group_cputime_init()\nfunction initializes the thread_group_cputime structure for the given task.\nThe thread_group_cputime_alloc() is a no-op for UP; for SMP it calls the\nout-of-line function thread_group_cputime_alloc_smp() to allocate and fill\nin the per-cpu structures and fields. The thread_group_cputime_free()\nfunction, also a no-op for UP, in SMP frees the per-cpu structures. The\nthread_group_cputime_clone_thread() function (also a UP no-op) for SMP calls\nthread_group_cputime_alloc() if the per-cpu structures haven\u0027t yet been\nallocated. The thread_group_cputime() function fills the task_cputime\nstructure it is passed with the contents of the thread_group_cputime fields;\nin UP it\u0027s that simple but in SMP it must also safely check that tsk-\u003esignal\nis non-NULL (if it is it just uses the appropriate fields of task_struct) and,\nif so, sums the per-cpu values for each online CPU. Finally, the three\nfunctions account_group_user_time(), account_group_system_time() and\naccount_group_exec_runtime() are used by timer functions to update the\nrespective fields of the thread_group_cputime structure.\n\nNon-SMP operation is trivial and will not be mentioned further.\n\nThe per-cpu structure is always allocated when a task creates its first new\nthread, via a call to thread_group_cputime_clone_thread() from copy_signal().\nIt is freed at process exit via a call to thread_group_cputime_free() from\ncleanup_signal().\n\nAll functions that formerly summed utime/stime/sum_sched_runtime values from\nfrom all threads in the thread group now use thread_group_cputime() to\nsnapshot the values in the thread_group_cputime structure or the values in\nthe task structure itself if the per-cpu structure hasn\u0027t been allocated.\n\nFinally, the code in kernel/posix-cpu-timers.c has changed quite a bit.\nThe run_posix_cpu_timers() function has been split into a fast path and a\nslow path; the former safely checks whether there are any expired thread\ntimers and, if not, just returns, while the slow path does the heavy lifting.\nWith the dedicated thread group fields, timers are no longer \"rebalanced\" and\nthe process_timer_rebalance() function and related code has gone away. All\nsumming loops are gone and all code that used them now uses the\nthread_group_cputime() inline. When process-wide timers are set, the new\ntask_cputime structure in signal_struct is used to cache the earliest\nexpiration; this is checked in the fast path.\n\nPerformance\n\nThe fix appears not to add significant overhead to existing operations. It\ngenerally performs the same as the current code except in two cases, one in\nwhich it performs slightly worse (Case 5 below) and one in which it performs\nvery significantly better (Case 2 below). Overall it\u0027s a wash except in those\ntwo cases.\n\nI\u0027ve since done somewhat more involved testing on a dual-core Opteron system.\n\nCase 1: With no itimer running, for a test with 100,000 threads, the fixed\n\tkernel took 1428.5 seconds, 513 seconds more than the unfixed system,\n\tall of which was spent in the system. There were twice as many\n\tvoluntary context switches with the fix as without it.\n\nCase 2: With an itimer running at .01 second ticks and 4000 threads (the most\n\tan unmodified kernel can handle), the fixed kernel ran the test in\n\teight percent of the time (5.8 seconds as opposed to 70 seconds) and\n\thad better tick accuracy (.012 seconds per tick as opposed to .023\n\tseconds per tick).\n\nCase 3: A 4000-thread test with an initial timer tick of .01 second and an\n\tinterval of 10,000 seconds (i.e. a timer that ticks only once) had\n\tvery nearly the same performance in both cases: 6.3 seconds elapsed\n\tfor the fixed kernel versus 5.5 seconds for the unfixed kernel.\n\nWith fewer threads (eight in these tests), the Case 1 test ran in essentially\nthe same time on both the modified and unmodified kernels (5.2 seconds versus\n5.8 seconds). The Case 2 test ran in about the same time as well, 5.9 seconds\nversus 5.4 seconds but again with much better tick accuracy, .013 seconds per\ntick versus .025 seconds per tick for the unmodified kernel.\n\nSince the fix affected the rlimit code, I also tested soft and hard CPU limits.\n\nCase 4: With a hard CPU limit of 20 seconds and eight threads (and an itimer\n\trunning), the modified kernel was very slightly favored in that while\n\tit killed the process in 19.997 seconds of CPU time (5.002 seconds of\n\twall time), only .003 seconds of that was system time, the rest was\n\tuser time. The unmodified kernel killed the process in 20.001 seconds\n\tof CPU (5.014 seconds of wall time) of which .016 seconds was system\n\ttime. Really, though, the results were too close to call. The results\n\twere essentially the same with no itimer running.\n\nCase 5: With a soft limit of 20 seconds and a hard limit of 2000 seconds\n\t(where the hard limit would never be reached) and an itimer running,\n\tthe modified kernel exhibited worse tick accuracy than the unmodified\n\tkernel: .050 seconds/tick versus .028 seconds/tick. Otherwise,\n\tperformance was almost indistinguishable. With no itimer running this\n\ttest exhibited virtually identical behavior and times in both cases.\n\nIn times past I did some limited performance testing. those results are below.\n\nOn a four-cpu Opteron system without this fix, a sixteen-thread test executed\nin 3569.991 seconds, of which user was 3568.435s and system was 1.556s. On\nthe same system with the fix, user and elapsed time were about the same, but\nsystem time dropped to 0.007 seconds. Performance with eight, four and one\nthread were comparable. Interestingly, the timer ticks with the fix seemed\nmore accurate: The sixteen-thread test with the fix received 149543 ticks\nfor 0.024 seconds per tick, while the same test without the fix received 58720\nfor 0.061 seconds per tick. Both cases were configured for an interval of\n0.01 seconds. Again, the other tests were comparable. Each thread in this\ntest computed the primes up to 25,000,000.\n\nI also did a test with a large number of threads, 100,000 threads, which is\nimpossible without the fix. In this case each thread computed the primes only\nup to 10,000 (to make the runtime manageable). System time dominated, at\n1546.968 seconds out of a total 2176.906 seconds (giving a user time of\n629.938s). It received 147651 ticks for 0.015 seconds per tick, still quite\naccurate. There is obviously no comparable test without the fix.\n\nSigned-off-by: Frank Mayhar \u003cfmayhar@google.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "6976675d94042fbd446231d1bd8b7de71a980ada", "tree": "2d2acebb8078dd373115ecbdac5423f7d4fa7d72", "parents": [ "654c8e0b1c623b156c5b92f28d914ab38c9c2c90" ], "author": { "name": "Arjan van de Ven", "email": "arjan@linux.intel.com", "time": "Mon Sep 01 15:52:40 2008 -0700" }, "committer": { "name": "Arjan van de Ven", "email": "arjan@linux.intel.com", "time": "Fri Sep 05 21:35:30 2008 -0700" }, "message": "hrtimer: create a \"timer_slack\" field in the task struct\n\nWe want to be able to control the default \"rounding\" that is used by\nselect() and poll() and friends. This is a per process property\n(so that we can have a \"nice\" like program to start certain programs with\na looser or stricter rounding) that can be set/get via a prctl().\n\nFor this purpose, a field called \"timer_slack_ns\" is added to the task\nstruct. In addition, a field called \"default_timer_slack\"ns\" is added\nso that tasks easily can temporarily to a more/less accurate slack and then\nback to the default.\n\nThe default value of the slack is set to 50 usec; this is significantly less\nthan 2.6.27\u0027s average select() and poll() timing error but still allows\nthe kernel to group timers somewhat to preserve power behavior. Applications\nand admins can override this via the prctl()\n\nSigned-off-by: Arjan van de Ven \u003carjan@linux.intel.com\u003e\n" }, { "commit": "2d70b68d42b5196a48ccb639e3797f097ef5bea3", "tree": "b3040706cd69e0e7bc6d846e08fd91a441b34310", "parents": [ "141d87e7debe3334018e46859c7565c44cebda65" ], "author": { "name": "Ken Chen", "email": "kenchen@google.com", "time": "Wed Aug 20 14:09:17 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Aug 20 15:40:32 2008 -0700" }, "message": "fix setpriority(PRIO_PGRP) thread iterator breakage\n\nWhen user calls sys_setpriority(PRIO_PGRP ...) on a NPTL style multi-LWP\nprocess, only the task leader of the process is affected, all other\nsibling LWP threads didn\u0027t receive the setting. The problem was that the\niterator used in sys_setpriority() only iteartes over one task for each\nprocess, ignoring all other sibling thread.\n\nIntroduce a new macro do_each_pid_thread / while_each_pid_thread to walk\neach thread of a process. Convert 4 call sites in {set/get}priority and\nioprio_{set/get}.\n\nSigned-off-by: Ken Chen \u003ckenchen@google.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ca195b7f6da3d5dde0bb85a7c322d7de73352653", "tree": "1f8a31634ddc2bd4ba8a5fc081b39babab62323b", "parents": [ "fb45daa69d287b394eca1619b3fadff7c0215c71" ], "author": { "name": "Huang Ying", "email": "ying.huang@intel.com", "time": "Fri Aug 15 00:40:24 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Aug 15 08:35:42 2008 -0700" }, "message": "kexec jump: remove duplication of kexec_restart_prepare()\n\nCall kernel_restart_prepare() in kernel_kexec() instead of duplicating the\ncode.\n\nSigned-off-by: Huang Ying \u003cying.huang@intel.com\u003e\nAcked-by: Pavel Machek \u003cpavel@suse.cz\u003e\nAcked-by: Vivek Goyal \u003cvgoyal@redhat.com\u003e\nCc: Pavel Machek \u003cpavel@ucw.cz\u003e\nCc: \"Rafael J. Wysocki\" \u003crjw@sisk.pl\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Vivek Goyal \u003cvgoyal@redhat.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3ab83521378268044a448113c6aa9a9e245f4d2f", "tree": "e9e8496577e4b2e994edf204e9a8ae7c026eec95", "parents": [ "7fccf0326536c1b245b98740d489abb9aab69a12" ], "author": { "name": "Huang Ying", "email": "ying.huang@intel.com", "time": "Fri Jul 25 19:45:07 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jul 26 12:00:04 2008 -0700" }, "message": "kexec jump\n\nThis patch provides an enhancement to kexec/kdump. It implements the\nfollowing features:\n\n- Backup/restore memory used by the original kernel before/after\n kexec.\n\n- Save/restore CPU state before/after kexec.\n\nThe features of this patch can be used as a general method to call program in\nphysical mode (paging turning off). This can be used to call BIOS code under\nLinux.\n\nkexec-tools needs to be patched to support kexec jump. The patches and\nthe precompiled kexec can be download from the following URL:\n\n source: http://khibernation.sourceforge.net/download/release_v10/kexec-tools/kexec-tools-src_git_kh10.tar.bz2\n patches: http://khibernation.sourceforge.net/download/release_v10/kexec-tools/kexec-tools-patches_git_kh10.tar.bz2\n binary: http://khibernation.sourceforge.net/download/release_v10/kexec-tools/kexec_git_kh10\n\nUsage example of calling some physical mode code and return:\n\n1. Compile and install patched kernel with following options selected:\n\nCONFIG_X86_32\u003dy\nCONFIG_KEXEC\u003dy\nCONFIG_PM\u003dy\nCONFIG_KEXEC_JUMP\u003dy\n\n2. Build patched kexec-tool or download the pre-built one.\n\n3. Build some physical mode executable named such as \"phy_mode\"\n\n4. Boot kernel compiled in step 1.\n\n5. Load physical mode executable with /sbin/kexec. The shell command\n line can be as follow:\n\n /sbin/kexec --load-preserve-context --args-none phy_mode\n\n6. Call physical mode executable with following shell command line:\n\n /sbin/kexec -e\n\nImplementation point:\n\nTo support jumping without reserving memory. One shadow backup page (source\npage) is allocated for each page used by kexeced code image (destination\npage). When do kexec_load, the image of kexeced code is loaded into source\npages, and before executing, the destination pages and the source pages are\nswapped, so the contents of destination pages are backupped. Before jumping\nto the kexeced code image and after jumping back to the original kernel, the\ndestination pages and the source pages are swapped too.\n\nC ABI (calling convention) is used as communication protocol between\nkernel and called code.\n\nA flag named KEXEC_PRESERVE_CONTEXT for sys_kexec_load is added to\nindicate that the loaded kernel image is used for jumping back.\n\nNow, only the i386 architecture is supported.\n\nSigned-off-by: Huang Ying \u003cying.huang@intel.com\u003e\nAcked-by: Vivek Goyal \u003cvgoyal@redhat.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Pavel Machek \u003cpavel@ucw.cz\u003e\nCc: Nigel Cunningham \u003cnigel@nigel.suspend2.net\u003e\nCc: \"Rafael J. Wysocki\" \u003crjw@sisk.pl\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7394f0f6c0baab650ea9194cb1be847df646fb57", "tree": "dac44a6ddeac45d0ac604053b798291e68d2a70a", "parents": [ "a89cc1959d0ea5f36bf7421dc97b34f03809637d" ], "author": { "name": "Adrian Bunk", "email": "bunk@kernel.org", "time": "Fri Jul 25 01:48:40 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jul 25 10:53:45 2008 -0700" }, "message": "unexport uts_sem\n\nWith the removal of the Solaris binary emulation the export of\nuts_sem became unused.\n\nSigned-off-by: Adrian Bunk \u003cbunk@kernel.org\u003e\nAcked-by: David S. Miller \u003cdavem@davemloft.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ac331d158e198d2a91a5b0a3ec4ca9991fdb57af", "tree": "b0921e2bc8e59d5df2c554c41c3b9f04e05d6d7c", "parents": [ "f557d0996a6f9c06912528ea85e1dba0fb7d485f" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Fri Jul 25 01:45:38 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jul 25 10:53:28 2008 -0700" }, "message": "call_usermodehelper(): increase reliability\n\nPresently call_usermodehelper_setup() uses GFP_ATOMIC. but it can return\nNULL _very_ easily.\n\nGFP_ATOMIC is needed only when we can\u0027t sleep. and, GFP_KERNEL is robust\nand better.\n\nthus, I add gfp_mask argument to call_usermodehelper_setup().\n\nSo, its callers pass the gfp_t as below:\n\ncall_usermodehelper() and call_usermodehelper_keys():\n\tdepend on \u0027wait\u0027 argument.\ncall_usermodehelper_pipe():\n\talways GFP_KERNEL because always run under process context.\norderly_poweroff():\n\tpass to GFP_ATOMIC because may run under interrupt context.\n\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: \"Paul Menage\" \u003cmenage@google.com\u003e\nReviewed-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nAcked-by: Jeremy Fitzhardinge \u003cjeremy@xensource.com\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nCc: Andi Kleen \u003candi@firstfloor.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7b26655f6208fdefa9ab0adc016116324f8d4ba8", "tree": "07f081c52da72a9730861c74ebea86ea48d402e2", "parents": [ "f99c90094bffbe1cf38ef66f198a808c14a02d56" ], "author": { "name": "Shi Weihua", "email": "shiwh@cn.fujitsu.com", "time": "Fri May 23 13:04:59 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat May 24 09:56:13 2008 -0700" }, "message": "sys_prctl(): fix return of uninitialized value\n\nIf none of the switch cases match, the PR_SET_PDEATHSIG and\nPR_SET_DUMPABLE cases of the switch statement will never write to local\nvariable `error\u0027.\n\nSigned-off-by: Shi Weihua \u003cshiwh@cn.fujitsu.com\u003e\nCc: Andrew G. Morgan \u003cmorgan@kernel.org\u003e\nAcked-by: \"Serge E. Hallyn\" \u003cserue@us.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": "12a3de0a965826096d8adc593bcf4392a7d5b459", "tree": "764d69c2973e67cb3ae58bec02e29cd616c40f90", "parents": [ "1dd768c0815334d2319d6377f0750ace075b6142" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed Apr 30 00:54:29 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Apr 30 08:29:49 2008 -0700" }, "message": "pids: sys_getpgid: fix unsafe *pid usage, s/tasklist/rcu/\n\n1. sys_getpgid() needs rcu_read_lock() to derive the pgrp _nr, even if\n the task is current, otherwise we can race with another thread which\n does sys_setpgid().\n\n2. Use rcu_read_lock() instead of tasklist_lock when pid !\u003d 0, make sure\n that we don\u0027t use the NULL pid if the task exits right after successful\n find_task_by_vpid().\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\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": "1dd768c0815334d2319d6377f0750ace075b6142", "tree": "13e3d42f3679ef1a50e276abdbeafccc9cfe1ed0", "parents": [ "7d8da0962eaee30b4a380ded177349bfbdd6ac46" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed Apr 30 00:54:28 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Apr 30 08:29:49 2008 -0700" }, "message": "pids: sys_getsid: fix unsafe *pid usage, fix possible 0 instead of -ESRCH\n\n1. sys_getsid() needs rcu_read_lock() to derive the session _nr, even if\n the task is current, otherwise we can race with another thread which\n does sys_setsid().\n\n2. The task can exit between find_task_by_vpid() and task_session_vnr(),\n in that unlikely case sys_getsid() returns 0 instead of -ESRCH.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\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": "83beaf3c6c75b36b7c9be7f555c8cf7797842cc5", "tree": "e134ff1fcd8aec134ecde984a4b90d221f79af15", "parents": [ "24336eaeecea860b2a82530e07c80bc7e0558b73" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed Apr 30 00:54:27 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Apr 30 08:29:49 2008 -0700" }, "message": "pids: sys_setpgid: use change_pid() helper\n\nUse change_pid() instead of detach_pid() + attach_pid() in sys_setpgid().\n\nThis way task_pgrp() is not NULL in between.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\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": "d6cf723a142f63ccb92272bc0e9bfffd3c3a5cac", "tree": "16ec6665ebb03107d40f5ab0884ca7e8394b5358", "parents": [ "1406f2d321bae5ac5ff729dcb773336d9c05ec74" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed Apr 30 00:52:38 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Apr 30 08:29:34 2008 -0700" }, "message": "k_getrusage: don\u0027t take rcu_read_lock()\n\nJust a trivial example, more to come.\n\nk_getrusage() holds rcu_read_lock() because it was previously required by\nlock_task_sighand(). Unneeded now.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: \"Paul E. McKenney\" \u003cpaulmck@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": "679c9cd4acc2cf2872171813752eab3320273339", "tree": "ddc9c455e47361746d58636419d535550a86cbcc", "parents": [ "e5949050f2610fa526b154e0d8379218e54f49d1" ], "author": { "name": "Sripathi Kodi", "email": "sripathik@in.ibm.com", "time": "Tue Apr 29 00:58:42 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Apr 29 08:05:59 2008 -0700" }, "message": "add RUSAGE_THREAD\n\nAdd the RUSAGE_THREAD option for the getrusage system call. This is\nessentially Roland\u0027s patch from http://lkml.org/lkml/2008/1/18/589, but the\nline about RUSAGE_LWP line has been removed, as suggested by Ulrich and\nChristoph.\n\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Sripathi Kodi \u003csripathik@in.ibm.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Michael Kerrisk \u003cmtk.manpages@googlemail.com\u003e\nCc: Ulrich Drepper \u003cdrepper@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": "3898b1b4ebff8dcfbcf1807e0661585e06c9a91c", "tree": "69a338864dfe654f68064a599c5d0da460df34ac", "parents": [ "4016a1390d07f15b267eecb20e76a48fd5c524ef" ], "author": { "name": "Andrew G. Morgan", "email": "morgan@kernel.org", "time": "Mon Apr 28 02:13:40 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:26 2008 -0700" }, "message": "capabilities: implement per-process securebits\n\nFilesystem capability support makes it possible to do away with (set)uid-0\nbased privilege and use capabilities instead. That is, with filesystem\nsupport for capabilities but without this present patch, it is (conceptually)\npossible to manage a system with capabilities alone and never need to obtain\nprivilege via (set)uid-0.\n\nOf course, conceptually isn\u0027t quite the same as currently possible since few\nuser applications, certainly not enough to run a viable system, are currently\nprepared to leverage capabilities to exercise privilege. Further, many\napplications exist that may never get upgraded in this way, and the kernel\nwill continue to want to support their setuid-0 base privilege needs.\n\nWhere pure-capability applications evolve and replace setuid-0 binaries, it is\ndesirable that there be a mechanisms by which they can contain their\nprivilege. In addition to leveraging the per-process bounding and inheritable\nsets, this should include suppressing the privilege of the uid-0 superuser\nfrom the process\u0027 tree of children.\n\nThe feature added by this patch can be leveraged to suppress the privilege\nassociated with (set)uid-0. This suppression requires CAP_SETPCAP to\ninitiate, and only immediately affects the \u0027current\u0027 process (it is inherited\nthrough fork()/exec()). This reimplementation differs significantly from the\nhistorical support for securebits which was system-wide, unwieldy and which\nhas ultimately withered to a dead relic in the source of the modern kernel.\n\nWith this patch applied a process, that is capable(CAP_SETPCAP), can now drop\nall legacy privilege (through uid\u003d0) for itself and all subsequently\nfork()\u0027d/exec()\u0027d children with:\n\n prctl(PR_SET_SECUREBITS, 0x2f);\n\nThis patch represents a no-op unless CONFIG_SECURITY_FILE_CAPABILITIES is\nenabled at configure time.\n\n[akpm@linux-foundation.org: fix uninitialised var warning]\n[serue@us.ibm.com: capabilities: use cap_task_prctl when !CONFIG_SECURITY]\nSigned-off-by: Andrew G. Morgan \u003cmorgan@kernel.org\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nReviewed-by: James Morris \u003cjmorris@namei.org\u003e\nCc: Stephen Smalley \u003csds@tycho.nsa.gov\u003e\nCc: Paul Moore \u003cpaul.moore@hp.com\u003e\nSigned-off-by: Serge E. Hallyn \u003cserue@us.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": "8fb402bccf203ecca8f9e0202b8fd3c937dece6f", "tree": "4f102f9cc81dedbf9271f728a4b1e6e731a6a174", "parents": [ "5deb45e39b946901ae028ccd3a1d0b35fa387475" ], "author": { "name": "Erik Bosman", "email": "ebn310@few.vu.nl", "time": "Fri Apr 11 18:54:17 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Apr 19 19:19:55 2008 +0200" }, "message": "generic, x86: add prctl commands PR_GET_TSC and PR_SET_TSC\n\nThis patch adds prctl commands that make it possible\nto deny the execution of timestamp counters in userspace.\nIf this is not implemented on a specific architecture,\nprctl will return -EINVAL.\n\nned-off-by: Erik Bosman \u003cejbosman@cs.vu.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "6c5f3e7b43300508fe3947ff3cfff0f86043bb57", "tree": "9843b8897ec3357b09f62bb6423cd4753e1d4516", "parents": [ "fea9d175545b38cb3e84569400419eb81bc90fa3" ], "author": { "name": "Pavel Emelyanov", "email": "xemul@openvz.org", "time": "Fri Feb 08 04:19:20 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 08 09:22:29 2008 -0800" }, "message": "Pidns: make full use of xxx_vnr() calls\n\nSome time ago the xxx_vnr() calls (e.g. pid_vnr or find_task_by_vpid) were\n_all_ converted to operate on the current pid namespace. After this each call\nlike xxx_nr_ns(foo, current-\u003ensproxy-\u003epid_ns) is nothing but a xxx_vnr(foo)\none.\n\nSwitch all the xxx_nr_ns() callers to use the xxx_vnr() calls where\nappropriate.\n\nSigned-off-by: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nReviewed-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Balbir Singh \u003cbalbir@in.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": "ac9a8e3f0f43d20fc316162e8e5f9186d295ff49", "tree": "a6b8d416c38d222773a46c5d84b3d043facbf008", "parents": [ "44c4e1b2581f7273ab14ef30b6430618801c57b1" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Fri Feb 08 04:19:15 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 08 09:22:28 2008 -0800" }, "message": "sys_getsid: don\u0027t use -\u003ensproxy directly\n\nWith the new semantics of find_vpid() we don\u0027t need to play with -\u003ensproxy\nexplicitely, _vxx() do the right things.\n\nAlso s/tasklist/rcu/.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6806aac6d282d58b97763f5e17e2787e62c3b440", "tree": "4076069a60e054a2d8c31bc2998607668b0a40b0", "parents": [ "d12619b5ff5664623524aef796514d1946ea3b4a" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Fri Feb 08 04:19:12 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 08 09:22:27 2008 -0800" }, "message": "sys_setsid: remove now unneeded session !\u003d 1 check\n\nEric\u0027s \"fix clone(CLONE_NEWPID)\" eliminated the last reason for this hack.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.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": "430c623121ea88ca80595c99fdc63b7f8a803ae5", "tree": "8ada2d8287d07cabd64cc3614a6a643623046e5c", "parents": [ "297bd42b15daed02453ff59ce6d31216a58b0398" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Fri Feb 08 04:19:11 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 08 09:22:27 2008 -0800" }, "message": "start the global /sbin/init with 0,0 special pids\n\nAs Eric pointed out, there is no problem with init starting with sid \u003d\u003d pgid\n\u003d\u003d 0, and this was historical linux behavior changed in 2.6.18.\n\nRemove kernel_init()-\u003e__set_special_pids(), this is unneeded and complicates\nthe rules for sys_setsid().\n\nThis change and the previous change in daemonize() mean that /sbin/init does\nnot need the special \"session !\u003d 1\" hack in sys_setsid() any longer. We can\u0027t\nremove this check yet, we should cleanup copy_process(CLONE_NEWPID) first, so\nupdate the comment only.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nAcked-by: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8520d7c7f8611216e3b270becec95bb35b6899d4", "tree": "77001e6830bb415590067e9d4be24cd8bdd36219", "parents": [ "e4cc0a9c876d4d4eadaef97a2bff4a199946d202" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Fri Feb 08 04:19:09 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 08 09:22:27 2008 -0800" }, "message": "teach set_special_pids() to use struct pid\n\nChange set_special_pids() to work with struct pid, not pid_t from global name\nspace. This again speedups and imho cleanups the code, also a preparation for\nthe next patch.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nAcked-by: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nAcked-by: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e4cc0a9c876d4d4eadaef97a2bff4a199946d202", "tree": "e25406d84ce842c54e3ac5438e4bcee32a75a964", "parents": [ "4e021306cff4277764a42065214fc73f2d26be4b" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Fri Feb 08 04:19:09 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 08 09:22:27 2008 -0800" }, "message": "fix setsid() for sub-namespace /sbin/init\n\nsys_setsid() still deals with pid_t\u0027s from the global namespace. This means\nthat the \"session \u003e 1\" check can\u0027t help for sub-namespace init, setsid() can\u0027t\nsucceed because copy_process(CLONE_NEWPID) populates PIDTYPE_PGID/SID links.\n\nRemove the usage of task_struct-\u003epid and convert the code to use \"struct pid\".\nThis also simplifies and speedups the code, saves one find_pid().\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nAcked-by: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4e021306cff4277764a42065214fc73f2d26be4b", "tree": "49e2c5b785b887ae47c599b0afd81ba304f9062a", "parents": [ "c543f1ee08ea6c2176dbdc47df0d0f6357c88713" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Fri Feb 08 04:19:08 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 08 09:22:27 2008 -0800" }, "message": "sys_setpgid(): simplify pid/ns interaction\n\nsys_setpgid() does unneeded conversions from pid_t to \"struct pid\" and vice\nversa. Use \"struct pid\" more consistently. Saves one find_vpid() and\neliminates the explicit usage of -\u003ensproxy-\u003epid_ns. Imho, cleanups the\ncode.\n\nAlso use the same_thread_group() helper.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nAcked-by: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nAcked-by: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "1bf47346d75790ebd2563d909d48046961c7ffd5", "tree": "0f478764beb8dc4e0c71c5f3d6a657535579fe3a", "parents": [ "6b2fb3c65844452bb9e8b449d50863d1b36c5dc0" ], "author": { "name": "Eric Dumazet", "email": "dada1@cosmosbay.com", "time": "Wed Feb 06 01:37:56 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Feb 06 10:41:09 2008 -0800" }, "message": "kernel/sys.c: get rid of expensive divides in groups_sort()\n\ngroups_sort() can be quite long if user loads a large gid table.\n\nThis is because GROUP_AT(group_info, some_integer) uses an integer divide.\nSo having to do XXX thousand divides during one syscall can lead to very\nhigh latencies. (NGROUPS_MAX\u003d65536)\n\nIn the past (25 Mar 2006), an analog problem was found in groups_search()\n(commit d74beb9f33a5f16d2965f11b275e401f225c949d ) and at that time I\nchanged some variables to unsigned int.\n\nI believe that a more generic fix is to make sure NGROUPS_PER_BLOCK is\nunsigned.\n\nSigned-off-by: Eric Dumazet \u003cdada1@cosmosbay.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "9cfe015aa424b3c003baba3841a60dd9b5ad319b", "tree": "5575e06efcf91018f860f2db43979e8e91aba1c3", "parents": [ "774ed22c21ab95d582dfff38560f11cf290baeb4" ], "author": { "name": "Eric Dumazet", "email": "dada1@cosmosbay.com", "time": "Wed Feb 06 01:37:16 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Feb 06 10:41:06 2008 -0800" }, "message": "get rid of NR_OPEN and introduce a sysctl_nr_open\n\nNR_OPEN (historically set to 1024*1024) actually forbids processes to open\nmore than 1024*1024 handles.\n\nUnfortunatly some production servers hit the not so \u0027ridiculously high\nvalue\u0027 of 1024*1024 file descriptors per process.\n\nChanging NR_OPEN is not considered safe because of vmalloc space potential\nexhaust.\n\nThis patch introduces a new sysctl (/proc/sys/fs/nr_open) wich defaults to\n1024*1024, so that admins can decide to change this limit if their workload\nneeds it.\n\n[akpm@linux-foundation.org: export it for sparc64]\nSigned-off-by: Eric Dumazet \u003cdada1@cosmosbay.com\u003e\nCc: Alan Cox \u003calan@lxorguk.ukuu.org.uk\u003e\nCc: Richard Henderson \u003crth@twiddle.net\u003e\nCc: Ivan Kokshaysky \u003cink@jurassic.park.msu.ru\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: Ralf Baechle \u003cralf@linux-mips.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4ef7229ffa93695e346d510b871452811509ea65", "tree": "052adef3a8cc1e8d502525f3355e99d5e8d9dcda", "parents": [ "47a460d5a307e639d6c9cdf9bb4857e2f5f3cb76" ], "author": { "name": "Adrian Bunk", "email": "bunk@kernel.org", "time": "Mon Feb 04 22:30:06 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:22 2008 -0800" }, "message": "make kernel_shutdown_prepare() static\n\nkernel_shutdown_prepare() can now become static.\n\nSigned-off-by: Adrian Bunk \u003cbunk@kernel.org\u003e\nAcked-by: Pavel Machek \u003cpavel@ucw.cz\u003e\nCc: \"Rafael J. Wysocki\" \u003crjw@sisk.pl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3b7391de67da515c91f48aa371de77cb6cc5c07e", "tree": "22b9f5d9d1c36b374eb5765219aca3c7e1f23486", "parents": [ "46c383cc4530ccc438cb325e92e11eb21dd3d4fc" ], "author": { "name": "Serge E. Hallyn", "email": "serue@us.ibm.com", "time": "Mon Feb 04 22:29:45 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:20 2008 -0800" }, "message": "capabilities: introduce per-process capability bounding set\n\nThe capability bounding set is a set beyond which capabilities cannot grow.\n Currently cap_bset is per-system. It can be manipulated through sysctl,\nbut only init can add capabilities. Root can remove capabilities. By\ndefault it includes all caps except CAP_SETPCAP.\n\nThis patch makes the bounding set per-process when file capabilities are\nenabled. It is inherited at fork from parent. Noone can add elements,\nCAP_SETPCAP is required to remove them.\n\nOne example use of this is to start a safer container. For instance, until\ndevice namespaces or per-container device whitelists are introduced, it is\nbest to take CAP_MKNOD away from a container.\n\nThe bounding set will not affect pP and pE immediately. It will only\naffect pP\u0027 and pE\u0027 after subsequent exec()s. It also does not affect pI,\nand exec() does not constrain pI\u0027. So to really start a shell with no way\nof regain CAP_MKNOD, you would do\n\n\tprctl(PR_CAPBSET_DROP, CAP_MKNOD);\n\tcap_t cap \u003d cap_get_proc();\n\tcap_value_t caparray[1];\n\tcaparray[0] \u003d CAP_MKNOD;\n\tcap_set_flag(cap, CAP_INHERITABLE, 1, caparray, CAP_DROP);\n\tcap_set_proc(cap);\n\tcap_free(cap);\n\nThe following test program will get and set the bounding\nset (but not pI). For instance\n\n\t./bset get\n\t\t(lists capabilities in bset)\n\t./bset drop cap_net_raw\n\t\t(starts shell with new bset)\n\t\t(use capset, setuid binary, or binary with\n\t\tfile capabilities to try to increase caps)\n\n************************************************************\ncap_bound.c\n************************************************************\n #include \u003csys/prctl.h\u003e\n #include \u003clinux/capability.h\u003e\n #include \u003csys/types.h\u003e\n #include \u003cunistd.h\u003e\n #include \u003cstdio.h\u003e\n #include \u003cstdlib.h\u003e\n #include \u003cstring.h\u003e\n\n #ifndef PR_CAPBSET_READ\n #define PR_CAPBSET_READ 23\n #endif\n\n #ifndef PR_CAPBSET_DROP\n #define PR_CAPBSET_DROP 24\n #endif\n\nint usage(char *me)\n{\n\tprintf(\"Usage: %s get\\n\", me);\n\tprintf(\" %s drop \u003ccapability\u003e\\n\", me);\n\treturn 1;\n}\n\n #define numcaps 32\nchar *captable[numcaps] \u003d {\n\t\"cap_chown\",\n\t\"cap_dac_override\",\n\t\"cap_dac_read_search\",\n\t\"cap_fowner\",\n\t\"cap_fsetid\",\n\t\"cap_kill\",\n\t\"cap_setgid\",\n\t\"cap_setuid\",\n\t\"cap_setpcap\",\n\t\"cap_linux_immutable\",\n\t\"cap_net_bind_service\",\n\t\"cap_net_broadcast\",\n\t\"cap_net_admin\",\n\t\"cap_net_raw\",\n\t\"cap_ipc_lock\",\n\t\"cap_ipc_owner\",\n\t\"cap_sys_module\",\n\t\"cap_sys_rawio\",\n\t\"cap_sys_chroot\",\n\t\"cap_sys_ptrace\",\n\t\"cap_sys_pacct\",\n\t\"cap_sys_admin\",\n\t\"cap_sys_boot\",\n\t\"cap_sys_nice\",\n\t\"cap_sys_resource\",\n\t\"cap_sys_time\",\n\t\"cap_sys_tty_config\",\n\t\"cap_mknod\",\n\t\"cap_lease\",\n\t\"cap_audit_write\",\n\t\"cap_audit_control\",\n\t\"cap_setfcap\"\n};\n\nint getbcap(void)\n{\n\tint comma\u003d0;\n\tunsigned long i;\n\tint ret;\n\n\tprintf(\"i know of %d capabilities\\n\", numcaps);\n\tprintf(\"capability bounding set:\");\n\tfor (i\u003d0; i\u003cnumcaps; i++) {\n\t\tret \u003d prctl(PR_CAPBSET_READ, i);\n\t\tif (ret \u003c 0)\n\t\t\tperror(\"prctl\");\n\t\telse if (ret\u003d\u003d1)\n\t\t\tprintf(\"%s%s\", (comma++) ? \", \" : \" \", captable[i]);\n\t}\n\tprintf(\"\\n\");\n\treturn 0;\n}\n\nint capdrop(char *str)\n{\n\tunsigned long i;\n\n\tint found\u003d0;\n\tfor (i\u003d0; i\u003cnumcaps; i++) {\n\t\tif (strcmp(captable[i], str) \u003d\u003d 0) {\n\t\t\tfound\u003d1;\n\t\t\tbreak;\n\t\t}\n\t}\n\tif (!found)\n\t\treturn 1;\n\tif (prctl(PR_CAPBSET_DROP, i)) {\n\t\tperror(\"prctl\");\n\t\treturn 1;\n\t}\n\treturn 0;\n}\n\nint main(int argc, char *argv[])\n{\n\tif (argc\u003c2)\n\t\treturn usage(argv[0]);\n\tif (strcmp(argv[1], \"get\")\u003d\u003d0)\n\t\treturn getbcap();\n\tif (strcmp(argv[1], \"drop\")!\u003d0 || argc\u003c3)\n\t\treturn usage(argv[0]);\n\tif (capdrop(argv[2])) {\n\t\tprintf(\"unknown capability\\n\");\n\t\treturn 1;\n\t}\n\treturn execl(\"/bin/bash\", \"/bin/bash\", NULL);\n}\n************************************************************\n\n[serue@us.ibm.com: fix typo]\nSigned-off-by: Serge E. Hallyn \u003cserue@us.ibm.com\u003e\nSigned-off-by: Andrew G. Morgan \u003cmorgan@kernel.org\u003e\nCc: Stephen Smalley \u003csds@tycho.nsa.gov\u003e\nCc: James Morris \u003cjmorris@namei.org\u003e\nCc: Chris Wright \u003cchrisw@sous-sol.org\u003e\nCc: Casey Schaufler \u003ccasey@schaufler-ca.com\u003ea\nSigned-off-by: \"Serge E. Hallyn\" \u003cserue@us.ibm.com\u003e\nTested-by: Jiri Slaby \u003cjirislaby@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4307d1e5ada595c87f9a4d16db16ba5edb70dcb1", "tree": "bae1a90cc162a0d5bd1a78290ffb1f445fc07d80", "parents": [ "434b3d3209a8d8dcda63c3b14815659f4671b0a8" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Nov 07 18:37:48 2007 +0100" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@apollo.(none)", "time": "Sat Nov 17 16:27:00 2007 +0100" }, "message": "x86: ignore the sys_getcpu() tcache parameter\n\ndont use the vgetcpu tcache - it\u0027s causing problems with tasks\nmigrating, they\u0027ll see the old cache up to a jiffy after the\nmigration, further increasing the costs of the migration.\n\nIn the worst case they see a complete bogus information from\nthe tcache, when a sys_getcpu() call \"invalidated\" the cache\ninfo by incrementing the jiffies _and_ the cpuid info in the\ncache and the following vdso_getcpu() call happens after\nvdso_jiffies have been incremented.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Ulrich Drepper \u003cdrepper@redhat.com\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n\n" }, { "commit": "9a2e70572e94e21e7ec4186702d045415422bda0", "tree": "a6cd54dc559cbf6840dac4077f507a961486e21b", "parents": [ "270f722d4d5f94b02fd48eed47e57917ab00a858" ], "author": { "name": "Pavel Emelyanov", "email": "xemul@openvz.org", "time": "Thu Oct 18 23:40:39 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Oct 19 11:53:43 2007 -0700" }, "message": "Isolate the explicit usage of signal-\u003epgrp\n\nThe pgrp field is not used widely around the kernel so it is now marked as\ndeprecated with appropriate comment.\n\nThe initialization of INIT_SIGNALS is trimmed because\na) they are set to 0 automatically;\nb) gcc cannot properly initialize two anonymous (the second one\n is the one with the session) unions. In this particular case\n to make it compile we\u0027d have to add some field initialized\n right before the .pgrp.\n\nThis is the same patch as the 1ec320afdc9552c92191d5f89fcd1ebe588334ca one\n(from Cedric), but for the pgrp field.\n\nSome progress report:\n\nWe have to deprecate the pid, tgid, session and pgrp fields on struct\ntask_struct and struct signal_struct. The session and pgrp are already\ndeprecated. The tgid value is close to being such - the worst known usage\nin in fs/locks.c and audit code. The pid field deprecation is mainly\nblocked by numerous printk-s around the kernel that print the tsk-\u003epid to\nlog.\n\nSigned-off-by: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Sukadev Bhattiprolu \u003csukadev@us.ibm.com\u003e\nCc: Cedric Le Goater \u003cclg@fr.ibm.com\u003e\nCc: Serge Hallyn \u003cserue@us.ibm.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Herbert Poetzl \u003cherbert@13thfloor.at\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "228ebcbe634a30aec35132ea4375721bcc41bec0", "tree": "a875976fd5bde6e2f931aa235c34c88a2738493f", "parents": [ "b488893a390edfe027bae7a46e9af8083e740668" ], "author": { "name": "Pavel Emelyanov", "email": "xemul@openvz.org", "time": "Thu Oct 18 23:40:16 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Oct 19 11:53:40 2007 -0700" }, "message": "Uninline find_task_by_xxx set of functions\n\nThe find_task_by_something is a set of macros are used to find task by pid\ndepending on what kind of pid is proposed - global or virtual one. All of\nthem are wrappers above the most generic one - find_task_by_pid_type_ns() -\nand just substitute some args for it.\n\nIt turned out, that dereferencing the current-\u003ensproxy-\u003epid_ns construction\nand pushing one more argument on the stack inline cause kernel text size to\ngrow.\n\nThis patch moves all this stuff out-of-line into kernel/pid.c. Together\nwith the next patch it saves a bit less than 400 bytes from the .text\nsection.\n\nSigned-off-by: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nCc: Sukadev Bhattiprolu \u003csukadev@us.ibm.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b488893a390edfe027bae7a46e9af8083e740668", "tree": "c469a7f99ad01005a73011c029eb5e5d15454559", "parents": [ "3eb07c8c8adb6f0572baba844ba2d9e501654316" ], "author": { "name": "Pavel Emelyanov", "email": "xemul@openvz.org", "time": "Thu Oct 18 23:40:14 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Oct 19 11:53:40 2007 -0700" }, "message": "pid namespaces: changes to show virtual ids to user\n\nThis is the largest patch in the set. Make all (I hope) the places where\nthe pid is shown to or get from user operate on the virtual pids.\n\nThe idea is:\n - all in-kernel data structures must store either struct pid itself\n or the pid\u0027s global nr, obtained with pid_nr() call;\n - when seeking the task from kernel code with the stored id one\n should use find_task_by_pid() call that works with global pids;\n - when showing pid\u0027s numerical value to the user the virtual one\n should be used, but however when one shows task\u0027s pid outside this\n task\u0027s namespace the global one is to be used;\n - when getting the pid from userspace one need to consider this as\n the virtual one and use appropriate task/pid-searching functions.\n\n[akpm@linux-foundation.org: build fix]\n[akpm@linux-foundation.org: nuther build fix]\n[akpm@linux-foundation.org: yet nuther build fix]\n[akpm@linux-foundation.org: remove unneeded casts]\nSigned-off-by: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@openvz.org\u003e\nCc: Sukadev Bhattiprolu \u003csukadev@us.ibm.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a47afb0f9d794d525a372c8d69902147cc88222a", "tree": "7bd67280e2edc1c3b1803d4a93bee794088e9342", "parents": [ "858d72ead4864da0fb0b89b919524125ce998e27" ], "author": { "name": "Pavel Emelianov", "email": "xemul@openvz.org", "time": "Thu Oct 18 23:39:46 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Oct 19 11:53:37 2007 -0700" }, "message": "pid namespaces: round up the API\n\nThe set of functions process_session, task_session, process_group and\ntask_pgrp is confusing, as the names can be mixed with each other when looking\nat the code for a long time.\n\nThe proposals are to\n* equip the functions that return the integer with _nr suffix to\n represent that fact,\n* and to make all functions work with task (not process) by making\n the common prefix of the same name.\n\nFor monotony the routines signal_session() and set_signal_session() are\nreplaced with task_session_nr() and set_task_session(), especially since they\nare only used with the explicit task-\u003esignal dereference.\n\nSigned-off-by: Pavel Emelianov \u003cxemul@openvz.org\u003e\nAcked-by: Serge E. Hallyn \u003cserue@us.ibm.com\u003e\nCc: Kirill Korotaev \u003cdev@openvz.org\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Cedric Le Goater \u003cclg@fr.ibm.com\u003e\nCc: Herbert Poetzl \u003cherbert@13thfloor.at\u003e\nCc: Sukadev Bhattiprolu \u003csukadev@us.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": "fe9d4f576324999ac521c931f3b3eee0c8e45544", "tree": "8ff6ad770e15e81d00c87b945cb60326f28aee6b", "parents": [ "3ed75eb8f1cd89565966599c4f77d2edb086d5b0" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@sw.ru", "time": "Thu Oct 18 23:39:16 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Oct 19 11:53:34 2007 -0700" }, "message": "Add kernel/notifier.c\n\nThere is separate notifier header, but no separate notifier .c file.\n\nExtract notifier code out of kernel/sys.c which will remain for\nmisc syscalls I hope. Merge kernel/die_notifier.c into kernel/notifier.c.\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@sw.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c3d42d75270e9c259b75f814ccad2a88ab310665", "tree": "7b5e3b359581431c7d782b164a95230c1019c1a2", "parents": [ "d5d8c5976d6adeddb8208c240460411e2198b393" ], "author": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Thu Oct 18 03:04:47 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Oct 18 14:37:19 2007 -0700" }, "message": "unexport pm_power_off_prepare\n\nThis patch removes the unused EXPORT_SYMBOL(pm_power_off_prepare).\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nCc: \"Rafael J. Wysocki\" \u003crjw@sisk.pl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4047727e5ae33f9b8d2b7766d1994ea6e5ec2991", "tree": "70486b4524e672d800c2fbf36d06c73306efacf6", "parents": [ "281e0e3b34acb76a157576d27abc85c09fcf78e3" ], "author": { "name": "Mark Lord", "email": "lkml@rtr.ca", "time": "Mon Oct 01 01:20:10 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Oct 01 07:52:23 2007 -0700" }, "message": "Fix SMP poweroff hangs\n\nWe need to disable all CPUs other than the boot CPU (usually 0) before\nattempting to power-off modern SMP machines. This fixes the\nhang-on-poweroff issue on my MythTV SMP box, and also on Thomas Gleixner\u0027s\nnew toybox.\n\nSigned-off-by: Mark Lord \u003cmlord@pobox.com\u003e\nAcked-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: \"Rafael J. Wysocki\" \u003crjw@sisk.pl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b07e35f94a7b6a059f889b904529ee907dc0634d", "tree": "0d6178552b4232fa4ea7c3d49aa4710873babc11", "parents": [ "5d540fb71552b9f2c542bea967200c48be2d8ef6" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Thu Aug 30 23:56:27 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Aug 31 01:42:22 2007 -0700" }, "message": "setpgid(child) fails if the child was forked by sub-thread\n\nSpotted by Marcin Kowalczyk \u003cqrczak@knm.org.pl\u003e.\n\nsys_setpgid(child) fails if the child was forked by sub-thread.\n\nFix the \"is it our child\" check. The previous commit\nee0acf90d320c29916ba8c5c1b2e908d81f5057d was not complete.\n\n(this patch asks for the new same_thread_group() helper, but mainline doesn\u0027t\n have it yet).\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nCc: \u003cstable@kernel.org\u003e\nTested-by: \"Marcin \u0027Qrczak\u0027 Kowalczyk\" \u003cqrczak@knm.org.pl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b0cb1a19d05b8ea8611a9ef48a17fe417f1832e6", "tree": "895fe53e8dc4fc59d05b963ac079f6ff759ad0fb", "parents": [ "6c8dca5d53f95009d4fff00195bf38f277dc4366" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Sun Jul 29 23:24:36 2007 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Jul 29 16:45:38 2007 -0700" }, "message": "Replace CONFIG_SOFTWARE_SUSPEND with CONFIG_HIBERNATION\n\nReplace CONFIG_SOFTWARE_SUSPEND with CONFIG_HIBERNATION to avoid\nconfusion (among other things, with CONFIG_SUSPEND introduced in the\nnext patch).\n\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "58b3b71dfaaecbf7cff1fe10c049d663f0313e5f", "tree": "38f34ce39e1c93d6d54730ead4e414a5070e3b45", "parents": [ "602033ed5907a59ce86f709082a35be047743a86" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Thu Jul 26 16:29:55 2007 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 26 12:13:06 2007 -0700" }, "message": "Fix ThinkPad T42 poweroff failure introduced by by \"PM: Introduce pm_power_off_prepare\"\n\nCommit bd804eba1c8597cbb7cd5a5f9fe886aae16a079a (\"PM: Introduce\npm_power_off_prepare\") caused problems in the poweroff path, as reported by\nYOSHIFUJI Hideaki / 吉藤英明.\n\nGenerally, sysdev_shutdown() should be called after the ACPI preparation for\npowering the system off. To make it happen, we can separate sysdev_shutdown()\nfrom device_shutdown() and call it directly wherever necessary.\n\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nTested-by: YOSHIFUJI Hideaki / 吉藤英明 \u003cyoshfuji@linux-ipv6.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6c5d523826dc639df709ed0f88c5d2ce25379652", "tree": "ef2fa8cb30266b3a9b047902794e78c583b099da", "parents": [ "76fdbb25f963de5dc1e308325f0578a2f92b1c2d" ], "author": { "name": "Kawai, Hidehiro", "email": "hidehiro.kawai.ez@hitachi.com", "time": "Thu Jul 19 01:48:27 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:46 2007 -0700" }, "message": "coredump masking: reimplementation of dumpable using two flags\n\nThis patch changes mm_struct.dumpable to a pair of bit flags.\n\nset_dumpable() converts three-value dumpable to two flags and stores it into\nlower two bits of mm_struct.flags instead of mm_struct.dumpable.\nget_dumpable() behaves in the opposite way.\n\n[akpm@linux-foundation.org: export set_dumpable]\nSigned-off-by: Hidehiro Kawai \u003chidehiro.kawai.ez@hitachi.com\u003e\nCc: Alan Cox \u003calan@lxorguk.ukuu.org.uk\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "bd804eba1c8597cbb7cd5a5f9fe886aae16a079a", "tree": "082f289809f92db6d23a13cd8fbbb82da125fcda", "parents": [ "d7372cdf6938ccea23ec9fc68970702fed9ec3c8" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Thu Jul 19 01:47:40 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:42 2007 -0700" }, "message": "PM: Introduce pm_power_off_prepare\n\nIntroduce the pm_power_off_prepare() callback that can be registered by the\ninterested platforms in analogy with pm_idle() and pm_power_off(), used for\npreparing the system to power off (needed by ACPI).\n\nThis allows us to drop acpi_sysclass and device_acpi that are only defined in\norder to register the ACPI power off preparation callback, which is needed by\npm_power_off() registered in a much different way.\n\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nAcked-by: Pavel Machek \u003cpavel@ucw.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "86313c488a6848b7ec2ba04e74f25f79dd32a0b7", "tree": "3b190f7afc338362470573b563f65a1eb83795ac", "parents": [ "10a0a8d4e3f6bf2d077f94344441909abe670f5a" ], "author": { "name": "Jeremy Fitzhardinge", "email": "jeremy@xensource.com", "time": "Tue Jul 17 18:37:03 2007 -0700" }, "committer": { "name": "Jeremy Fitzhardinge", "email": "jeremy@goop.org", "time": "Wed Jul 18 08:47:40 2007 -0700" }, "message": "usermodehelper: Tidy up waiting\n\nRather than using a tri-state integer for the wait flag in\ncall_usermodehelper_exec, define a proper enum, and use that. I\u0027ve\npreserved the integer values so that any callers I\u0027ve missed should\nstill work OK.\n\nSigned-off-by: Jeremy Fitzhardinge \u003cjeremy@xensource.com\u003e\nCc: James Bottomley \u003cJames.Bottomley@HansenPartnership.com\u003e\nCc: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Johannes Berg \u003cjohannes@sipsolutions.net\u003e\nCc: Ralf Baechle \u003cralf@linux-mips.org\u003e\nCc: Bjorn Helgaas \u003cbjorn.helgaas@hp.com\u003e\nCc: Joel Becker \u003cjoel.becker@oracle.com\u003e\nCc: Tony Luck \u003ctony.luck@intel.com\u003e\nCc: Kay Sievers \u003ckay.sievers@vrfy.org\u003e\nCc: Srivatsa Vaddagiri \u003cvatsa@in.ibm.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\n" }, { "commit": "10a0a8d4e3f6bf2d077f94344441909abe670f5a", "tree": "b834c912629498e9fefb5958ee9965c414d32d69", "parents": [ "0ab4dc92278a0f3816e486d6350c6652a72e06c8" ], "author": { "name": "Jeremy Fitzhardinge", "email": "jeremy@xensource.com", "time": "Tue Jul 17 18:37:02 2007 -0700" }, "committer": { "name": "Jeremy Fitzhardinge", "email": "jeremy@goop.org", "time": "Wed Jul 18 08:47:40 2007 -0700" }, "message": "Add common orderly_poweroff()\n\nVarious pieces of code around the kernel want to be able to trigger an\norderly poweroff. This pulls them together into a single\nimplementation.\n\nBy default the poweroff command is /sbin/poweroff, but it can be set\nvia sysctl: kernel/poweroff_cmd. This is split at whitespace, so it\ncan include command-line arguments.\n\nThis patch replaces four other instances of invoking either \"poweroff\"\nor \"shutdown -h now\": two sbus drivers, and acpi thermal\nmanagement.\n\nsparc64 has its own \"powerd\"; still need to determine whether it should\nbe replaced by orderly_poweroff().\n\nSigned-off-by: Jeremy Fitzhardinge \u003cjeremy@xensource.com\u003e\nAcked-by: Len Brown \u003clenb@kernel.org\u003e\nSigned-off-by: Chris Wright \u003cchrisw@sous-sol.org\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Arnd Bergmann \u003carnd@arndb.de\u003e\nCc: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "1d9d02feeee89e9132034d504c9a45eeaf618a3d", "tree": "a4324cce8acd77cace3b1d4cf3a1e61783707e5c", "parents": [ "be0ef957c9eed4ebae873ee3fbcfb9dfde486dec" ], "author": { "name": "Andrea Arcangeli", "email": "andrea@cpushare.com", "time": "Sun Jul 15 23:41:32 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:50 2007 -0700" }, "message": "move seccomp from /proc to a prctl\n\nThis reduces the memory footprint and it enforces that only the current\ntask can enable seccomp on itself (this is a requirement for a\nstrightforward [modulo preempt ;) ] TIF_NOTSC implementation).\n\nSigned-off-by: Andrea Arcangeli \u003candrea@cpushare.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "acce292c82d4d82d35553b928df2b0597c3a9c78", "tree": "464288f40db9c254da214c400d0880ee50dc37f3", "parents": [ "7d69a1f4a72b18876c99c697692b78339d491568" ], "author": { "name": "Cedric Le Goater", "email": "clg@fr.ibm.com", "time": "Sun Jul 15 23:40:59 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:47 2007 -0700" }, "message": "user namespace: add the framework\n\nBasically, it will allow a process to unshare its user_struct table,\nresetting at the same time its own user_struct and all the associated\naccounting.\n\nA new root user (uid \u003d\u003d 0) is added to the user namespace upon creation.\nSuch root users have full privileges and it seems that theses privileges\nshould be controlled through some means (process capabilities ?)\n\nThe unshare is not included in this patch.\n\nChanges since [try #4]:\n\t- Updated get_user_ns and put_user_ns to accept NULL, and\n\t get_user_ns to return the namespace.\n\nChanges since [try #3]:\n\t- moved struct user_namespace to files user_namespace.{c,h}\n\nChanges since [try #2]:\n\t- removed struct user_namespace* argument from find_user()\n\nChanges since [try #1]:\n\t- removed struct user_namespace* argument from find_user()\n\t- added a root_user per user namespace\n\nSigned-off-by: Cedric Le Goater \u003cclg@fr.ibm.com\u003e\nSigned-off-by: Serge E. Hallyn \u003cserue@us.ibm.com\u003e\nAcked-by: Pavel Emelianov \u003cxemul@openvz.org\u003e\nCc: Herbert Poetzl \u003cherbert@13thfloor.at\u003e\nCc: Kirill Korotaev \u003cdev@sw.ru\u003e\nCc: Eric W. Biederman \u003cebiederm@xmission.com\u003e\nCc: Chris Wright \u003cchrisw@sous-sol.org\u003e\nCc: Stephen Smalley \u003csds@tycho.nsa.gov\u003e\nCc: James Morris \u003cjmorris@namei.org\u003e\nCc: Andrew Morgan \u003cagm@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e713d0dab21a68500720e222fa02567fc7dfb14b", "tree": "a56f90ce94d9287b73da6db72ed0e73542a70a07", "parents": [ "4ac24b3ba9016881b11646114bb5cd12cf23edd9" ], "author": { "name": "Sukadev Bhattiprolu", "email": "sukadev@us.ibm.com", "time": "Thu May 10 22:22:58 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri May 11 08:29:35 2007 -0700" }, "message": "attach_pid() with struct pid parameter\n\nattach_pid() currently takes a pid_t and then uses find_pid() to find the\ncorresponding struct pid. Sometimes we already have the struct pid. We can\nthen skip find_pid() if attach_pid() were to take a struct pid parameter.\n\nSigned-off-by: Sukadev Bhattiprolu \u003csukadev@us.ibm.com\u003e\nCc: Cedric Le Goater \u003cclg@fr.ibm.com\u003e\nCc: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nCc: Serge Hallyn \u003cserue@us.ibm.com\u003e\nCc: \u003ccontainers@lists.osdl.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3e88c553db938ad016026375f0545304b9030b42", "tree": "bbf9f04dea6f70e6a93a7b26e13db4778c9f3221", "parents": [ "00b8fd236764e3d5bc1d30dc65e256e283de4c3d" ], "author": { "name": "Daniel Walker", "email": "dwalker@mvista.com", "time": "Thu May 10 22:22:53 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri May 11 08:29:35 2007 -0700" }, "message": "use defines in sys_getpriority/sys_setpriority\n\nSwitch to the defines for these two checks, instead of hard coding the\nvalues.\n\n[akpm@linux-foundation.org: add missing include]\nSigned-off-by: Daniel Walker \u003cdwalker@mvista.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6eaeeaba39e5fa3d52a0bb8de15e995516ae251a", "tree": "5b4052fabfe107ad5332cb758ad8d86ea5a87848", "parents": [ "02239c29967418284c05d58971894d658575e78c" ], "author": { "name": "Eric Dumazet", "email": "dada1@cosmosbay.com", "time": "Thu May 10 22:22:37 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri May 11 08:29:34 2007 -0700" }, "message": "getrusage(): fill ru_inblock and ru_oublock fields if possible\n\nIf CONFIG_TASK_IO_ACCOUNTING is defined, we update io accounting counters for\neach task.\n\nThis patch permits reporting of values using the well known getrusage()\nsyscall, filling ru_inblock and ru_oublock instead of null values.\n\nAs TASK_IO_ACCOUNTING currently counts bytes counts, we approximate blocks\ncount doing : nr_blocks \u003d nr_bytes / 512\n\nExample of use :\n----------------------\nAfter patch is applied, /usr/bin/time command can now give a good\napproximation of IO that the process had to do.\n\n$ /usr/bin/time grep tototo /usr/include/*\nCommand exited with non-zero status 1\n0.00user 0.02system 0:02.11elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k\n24288inputs+0outputs (0major+259minor)pagefaults 0swaps\n\n$ /usr/bin/time dd if\u003d/dev/zero of\u003d/tmp/testfile count\u003d1000\n1000+0 enregistrements lus\n1000+0 enregistrements écrits\n512000 octets (512 kB) copiés, 0,00326601 seconde, 157 MB/s\n0.00user 0.00system 0:00.00elapsed 80%CPU (0avgtext+0avgdata 0maxresident)k\n0inputs+3000outputs (0major+299minor)pagefaults 0swaps\n\nSigned-off-by: Eric Dumazet \u003cdada1@cosmosbay.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "9a9136e270af14da506f66bcafcc506b86a86498", "tree": "b4d0a6877d92635134b7a944d0032fbc43227fd2", "parents": [ "3960208f9ca0cf6bdb31c21c59ac0526303f8b34", "7bb2acb76e8168ca5d0bde5a5a56585a11b3525a" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:54:17 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:54:17 2007 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: (25 commits)\n sound: convert \"sound\" subdirectory to UTF-8\n MAINTAINERS: Add cxacru website/mailing list\n include files: convert \"include\" subdirectory to UTF-8\n general: convert \"kernel\" subdirectory to UTF-8\n documentation: convert the Documentation directory to UTF-8\n Convert the toplevel files CREDITS and MAINTAINERS to UTF-8.\n remove broken URLs from net drivers\u0027 output\n Magic number prefix consistency change to Documentation/magic-number.txt\n trivial: s/i_sem /i_mutex/\n fix file specification in comments\n drivers/base/platform.c: fix small typo in doc\n misc doc and kconfig typos\n Remove obsolete fat_cvf help text\n Fix occurrences of \"the the \"\n Fix minor typoes in kernel/module.c\n Kconfig: Remove reference to external mqueue library\n Kconfig: A couple of grammatical fixes in arch/i386/Kconfig\n Correct comments in genrtc.c to refer to correct /proc file.\n Fix more \"deprecated\" spellos.\n Fix \"deprecated\" typoes.\n ...\n\nFix trivial comment conflict in kernel/relay.c.\n" }, { "commit": "6f7cc11aa6c7d5002e16096c7590944daece70ed", "tree": "68a11e4b67189c44ac0f3ab579e52e134d479cf5", "parents": [ "7c9cb38302e78d24e37f7d8a2ea7eed4ae5f2fa7" ], "author": { "name": "Gautham R Shenoy", "email": "ego@in.ibm.com", "time": "Wed May 09 02:34:02 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:51 2007 -0700" }, "message": "Extend notifier_call_chain to count nr_calls made\n\nSince 2.6.18-something, the community has been bugged by the problem to\nprovide a clean and a stable mechanism to postpone a cpu-hotplug event as\nlock_cpu_hotplug was badly broken.\n\nThis is another proposal towards solving that problem. This one is along the\nlines of the solution provided in kernel/workqueue.c\n\nInstead of having a global mechanism like lock_cpu_hotplug, we allow the\nsubsytems to define their own per-subsystem hot cpu mutexes. These would be\ntaken(released) where ever we are currently calling\nlock_cpu_hotplug(unlock_cpu_hotplug).\n\nAlso, in the per-subsystem hotcpu callback function,we take this mutex before\nwe handle any pre-cpu-hotplug events and release it once we finish handling\nthe post-cpu-hotplug events. A standard means for doing this has been\nprovided in [PATCH 2/4] and demonstrated in [PATCH 3/4].\n\nThe ordering of these per-subsystem mutexes might still prove to be a\nproblem, but hopefully lockdep should help us get out of that muddle.\n\nThe patch set to be applied against linux-2.6.19-rc5 is as follows:\n\n[PATCH 1/4] :\tExtend notifier_call_chain with an option to specify the\n\t\tnumber of notifications to be sent and also count the\n\t\tnumber of notifications actually sent.\n\n[PATCH 2/4] :\tDefine events CPU_LOCK_ACQUIRE and CPU_LOCK_RELEASE\n\t\tand send out notifications for these in _cpu_up and\n\t\t_cpu_down. This would help us standardise the acquire and\n\t\trelease of the subsystem locks in the hotcpu\n\t\tcallback functions of these subsystems.\n\n[PATCH 3/4] :\tEliminate lock_cpu_hotplug from kernel/sched.c.\n\n[PATCH 4/4] :\tIn workqueue_cpu_callback function, acquire(release) the\n\t\tworkqueue_mutex while handling\n\t\tCPU_LOCK_ACQUIRE(CPU_LOCK_RELEASE).\n\nIf the per-subsystem-locking approach survives the test of time, we can expect\na slow phasing out of lock_cpu_hotplug, which has not yet been eliminated in\nthese patches :)\n\nThis patch:\n\nProvide notifier_call_chain with an option to call only a specified number of\nnotifiers and also record the number of call to notifiers made.\n\nThe need for this enhancement was identified in the post entitled\n\"Slab - Eliminate lock_cpu_hotplug from slab\"\n(http://lkml.org/lkml/2006/10/28/92) by Ravikiran G Thirumalai and\nAndrew Morton.\n\nThis patch adds two additional parameters to notifier_call_chain API namely\n - int nr_to_calls : Number of notifier_functions to be called.\n \t\t The don\u0027t care value is -1.\n\n - unsigned int *nr_calls : Records the total number of notifier_funtions\n\t\t\t called by notifier_call_chain. The don\u0027t care\n\t\t\t value is NULL.\n\n[michal.k.k.piotrowski@gmail.com: build fix]\nCredit: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nSigned-off-by: Michal Piotrowski \u003cmichal.k.k.piotrowski@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a3d25c275d383975504dc53c25b691df59bd3c48", "tree": "161a2ae12a20a630c2f639e144872db2b92eb098", "parents": [ "d60846c4d16f9518b098b905af2b87cb6bf6dc42" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Wed May 09 02:33:18 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:48 2007 -0700" }, "message": "PM: Separate hibernation code from suspend code\n\n[ With Johannes Berg \u003cjohannes@sipsolutions.net\u003e ]\n\nSeparate the hibernation (aka suspend to disk code) from the other suspend\ncode. In particular:\n\n * Remove the definitions related to hibernation from include/linux/pm.h\n * Introduce struct hibernation_ops and a new hibernate() function to hibernate\n the system, defined in include/linux/suspend.h\n * Separate suspend code in kernel/power/main.c from hibernation-related code\n in kernel/power/disk.c and kernel/power/user.c (with the help of\n hibernation_ops)\n * Switch ACPI (the only user of pm_ops.pm_disk_mode) to hibernation_ops\n\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nCc: Greg KH \u003cgreg@kroah.com\u003e\nCc: Pavel Machek \u003cpavel@ucw.cz\u003e\nCc: Nigel Cunningham \u003cnigel@nigel.suspend2.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f42df9e658be10ca10d0d9b19a0e9d484694f04f", "tree": "a18ac720960721083c813d1f94e85d2ef1e7e612", "parents": [ "be2a608bd08ec00e19e14b322e07f443d2711084" ], "author": { "name": "John Anthony Kazos Jr", "email": "jakj@j-a-k-j.com", "time": "Wed May 09 08:23:08 2007 +0200" }, "committer": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Wed May 09 08:58:20 2007 +0200" }, "message": "general: convert \"kernel\" subdirectory to UTF-8\n\nConvert the \"kernel\" subdirectory of the tree to UTF-8. The only file\nmodified is \u003ckernel/sys.c\u003e.\n\nSigned-off-by: John Anthony Kazos Jr. \u003cjakj@j-a-k-j.com\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "9926e4c74300c4b31dee007298c6475d33369df0", "tree": "c2251d7f6a19874de8388b4271d6b2b9836cae38", "parents": [ "a4bb27d99ca2986e30180a0eb143865051b909db" ], "author": { "name": "Tom Alsberg", "email": "alsbergt@cs.huji.ac.il", "time": "Tue May 08 00:30:31 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:12 2007 -0700" }, "message": "CPU time limit patch / setrlimit(RLIMIT_CPU, 0) cheat fix\n\nAs discovered here today, the change in Kernel 2.6.17 intended to inhibit\nusers from setting RLIMIT_CPU to 0 (as that is equivalent to unlimited) by\n\"cheating\" and setting it to 1 in such a case, does not make a difference,\nas the check is done in the wrong place (too late), and only applies to the\nprofiling code.\n\nOn all systems I checked running kernels above 2.6.17, no matter what the\nhard and soft CPU time limits were before, a user could escape them by\nissuing in the shell (sh/bash/zsh) \"ulimit -t 0\", and then the user\u0027s\nprocess was not ever killed.\n\nAttached is a trivial patch to fix that. Simply moving the check to a\nslightly earlier location (specifically, before the line that actually\nassigns the limit - *old_rlim \u003d new_rlim), does the trick.\n\nDo note that at least the zsh (but not ash, dash, or bash) shell has the\nproblem of \"caching\" the limits set by the ulimit command, so when running\nzsh the fix will not immediately be evident - after entering \"ulimit -t 0\",\n\"ulimit -a\" will show \"-t: cpu time (seconds) 0\", even though the actual\nlimit as returned by getrlimit(...) will be 1. It can be verified by\nopening a subshell (which will not have the values of the parent shell in\ncache) and checking in it, or just by running a CPU intensive command like\n\"echo \u002765536^1048576\u0027 | bc\" and verifying that it dumps core after one\nsecond.\n\nRegardless of whether that is a misfeature in the shell, perhaps it would\nbe better to return -EINVAL from setrlimit in such a case instead of\ncheating and setting to 1, as that does not really reflect the actual state\nof the process anymore. I do not however know what the ground for that\ndecision was in the original 2.6.17 change, and whether there would be any\n\"backward\" compatibility issues, so I preferred not to touch that right\nnow.\n\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ab3bfca7abf3fd0fe41d26d839610a787aa7e587", "tree": "e62e58beaf9d22d4156b27d4523c3728bf5769bc", "parents": [ "b1296cc48b39355241470ef934a5e2270e3f23bd" ], "author": { "name": "Johannes Berg", "email": "johannes@sipsolutions.net", "time": "Sun May 06 14:50:49 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:59 2007 -0700" }, "message": "remove software_suspend()\n\nRemove software_suspend() and all its users since\npm_suspend(PM_SUSPEND_DISK) should be equivalent and there\u0027s no point in\nhaving two interfaces for the same thing.\n\nThe patch also changes the valid_state function to return 0 (false) for\nPM_SUSPEND_DISK when SOFTWARE_SUSPEND is not configured instead of\naccepting it and having the whole thing fail later.\n\nSigned-off-by: Johannes Berg \u003cjohannes@sipsolutions.net\u003e\nAcked-by: \"Rafael J. Wysocki\" \u003crjw@sisk.pl\u003e\nCc: Pavel Machek \u003cpavel@ucw.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "41487c65bfcce9c8e4d123da1719fcfd8df6d4d0", "tree": "e2e0e13bc3178c2cff766f1e0165bbbabdb2ed98", "parents": [ "ab521dc0f8e117fd808d3e425216864d60390500" ], "author": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Mon Feb 12 00:53:01 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Feb 12 09:48:32 2007 -0800" }, "message": "[PATCH] pid: replace do/while_each_task_pid with do/while_each_pid_task\n\nThere isn\u0027t any real advantage to this change except that it allows the old\nfunctions to be removed. Which is easier on maintenance and puts the code in\na more uniform style.\n\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\nCc: Alan Cox \u003calan@lxorguk.ukuu.org.uk\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ab521dc0f8e117fd808d3e425216864d60390500", "tree": "f9d6449c4d8c9508fd43edfe845108043e1536b2", "parents": [ "3e7cd6c413c9e6fbb5e1ee2acdadb4ababd2d474" ], "author": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Mon Feb 12 00:53:00 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Feb 12 09:48:32 2007 -0800" }, "message": "[PATCH] tty: update the tty layer to work with struct pid\n\nOf kernel subsystems that work with pids the tty layer is probably the largest\nconsumer. But it has the nice virtue that the assiation with a session only\nlasts until the session leader exits. Which means that no reference counting\nis required. So using struct pid winds up being a simple optimization to\navoid hash table lookups.\n\nIn the long term the use of pid_nr also ensures that when we have multiple pid\nspaces mixed everything will work correctly.\n\nSigned-off-by: Eric W. Biederman \u003ceric@maxwell.lnxi.com\u003e\nCc: Alan Cox \u003calan@lxorguk.ukuu.org.uk\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "72fd4a35a824331d7a0f4168d7576502d95d34b3", "tree": "be27880bc36b7f62e8044a88b8744a35c5317714", "parents": [ "262086cf5b5343c2b81c97b1c606058e921859df" ], "author": { "name": "Robert P. J. Day", "email": "rpjday@mindspring.com", "time": "Sat Feb 10 01:45:59 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Feb 11 10:51:32 2007 -0800" }, "message": "[PATCH] Numerous fixes to kernel-doc info in source files.\n\nA variety of (mostly) innocuous fixes to the embedded kernel-doc content in\nsource files, including:\n\n * make multi-line initial descriptions single line\n * denote some function names, constants and structs as such\n * change erroneous opening \u0027/*\u0027 to \u0027/**\u0027 in a few places\n * reword some text for clarity\n\nSigned-off-by: Robert P. J. Day \u003crpjday@mindspring.com\u003e\nCc: \"Randy.Dunlap\" \u003crdunlap@xenotime.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "1b5180b65122666a36a1a232b7b9b38b21a9dcdd", "tree": "a61b7cea4cd410755bd5f87ea886554ad1d05676", "parents": [ "b53d0b919ebe227e2b8e49b6e0ddee506be83aa8" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jan 23 10:45:50 2007 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jan 23 11:08:03 2007 -0800" }, "message": "[PATCH] notifiers: fix blocking_notifier_call_chain() scalability\n\nwhile lock-profiling the -rt kernel i noticed weird contention during\nmmap-intense workloads, and the tracer showed the following gem, in one\nof our MM hotpaths:\n\n threaded-2771 1.... 65us : sys_munmap (sysenter_do_call)\n threaded-2771 1.... 66us : profile_munmap (sys_munmap)\n threaded-2771 1.... 66us : blocking_notifier_call_chain (profile_munmap)\n threaded-2771 1.... 66us : rt_down_read (blocking_notifier_call_chain)\n\nouch! a global rw-semaphore taken in one of the most performance-\nsensitive codepaths of the kernel. And i dont even have oprofile\nenabled! All distro kernels have CONFIG_PROFILING enabled, so this\nscalability problem affects the majority of Linux users.\n\nThe fix is to enhance blocking_notifier_call_chain() to only take the\nlock if there appears to be work on the call-chain.\n\nWith this patch applied i get nicely saturated system, and much higher\nmunmap performance, on SMP systems.\n\nAnd as a bonus this also fixes a similar scalability bottleneck in the\nthread-exit codepath: profile_task_exit() ...\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f020bc468fe4a91d32046d448511978c7b611315", "tree": "30fb5d6f149425c7d30fa9a8540a517f1cb911c4", "parents": [ "84d737866e2babdeab0c6b18ea155c6a649663b8" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Fri Dec 08 02:38:02 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Fri Dec 08 08:28:52 2006 -0800" }, "message": "[PATCH] sys_setpgid: eliminate unnecessary do_each_task_pid(PIDTYPE_PGID)\n\nAll tasks in the process group have the same sid, we don\u0027t need to iterate\nthem all to check that the caller of sys_setpgid() doesn\u0027t change its\nsession.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "937949d9edbf4049bd41af6c9f92c26280584564", "tree": "d0a28f503b082f890cfa1f7fe952fda8fc771752", "parents": [ "ef55d53caa055aedee13e77da82740987dd64f2d" ], "author": { "name": "Cedric Le Goater", "email": "clg@fr.ibm.com", "time": "Fri Dec 08 02:37:54 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Fri Dec 08 08:28:51 2006 -0800" }, "message": "[PATCH] add process_session() helper routine\n\nReplace occurences of task-\u003esignal-\u003esession by a new process_session() helper\nroutine.\n\nIt will be useful for pid namespaces to abstract the session pid number.\n\nSigned-off-by: Cedric Le Goater \u003cclg@fr.ibm.com\u003e\nCc: Kirill Korotaev \u003cdev@openvz.org\u003e\nCc: Eric W. Biederman \u003cebiederm@xmission.com\u003e\nCc: Herbert Poetzl \u003cherbert@13thfloor.at\u003e\nCc: Sukadev Bhattiprolu \u003csukadev@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" } ], "next": "24ec839c431eb79bb8f6abc00c4e1eb3b8c4d517" }