)]}' { "log": [ { "commit": "2fc391112fb6f3424435a3aa2fda887497b5f807", "tree": "89cda7002d591807536dca68b6344a558b081428", "parents": [ "beda2c7ea2c15ed01eef00a997d2b0496c3a502d" ], "author": { "name": "Peter Zijlstra", "email": "peterz@infradead.org", "time": "Mon Aug 10 12:33:05 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Aug 10 14:43:09 2009 +0200" }, "message": "locking, sched: Give waitqueue spinlocks their own lockdep classes\n\nGive waitqueue spinlocks their own lockdep classes when they\nare initialised from init_waitqueue_head(). This means that\nstruct wait_queue::func functions can operate other waitqueues.\n\nThis is used by CacheFiles to catch the page from a backing fs\nbeing unlocked and to wake up another thread to take a copy of\nit.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nTested-by: Takashi Iwai \u003ctiwai@suse.de\u003e\nCc: linux-cachefs@redhat.com\nCc: torvalds@osdl.org\nCc: akpm@linux-foundation.org\nLKML-Reference: \u003c20090810113305.17284.81508.stgit@warthog.procyon.org.uk\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "78ddb08feb7d4fbe3c0a9931804c51ee58be4023", "tree": "3cd3485561a9ac036003fd4da41fdc485cd5ac71", "parents": [ "e790fb0ba64bfec158e1219d899cb588275d12ab" ], "author": { "name": "Johannes Weiner", "email": "hannes@cmpxchg.org", "time": "Tue Apr 14 16:53:05 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Apr 14 17:17:16 2009 +0200" }, "message": "wait: don\u0027t use __wake_up_common()\n\n\u0027777c6c5 wait: prevent exclusive waiter starvation\u0027 made\n__wake_up_common() global to be used from abort_exclusive_wait().\n\nIt was needed to do a wake-up with the waitqueue lock held while\npassing down a key to the wake-up function.\n\nSince \u00274ede816 epoll keyed wakeups: add __wake_up_locked_key() and\n__wake_up_sync_key()\u0027 there is an appropriate wrapper for this case:\n__wake_up_locked_key().\n\nUse it here and make __wake_up_common() private to the scheduler\nagain.\n\nSigned-off-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: \u003c1239720785-19661-1-git-send-email-hannes@cmpxchg.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "777c6c5f1f6e757ae49ecca2ed72d6b1f523c007", "tree": "342b79faee43af9705b5a8ca406565fda0ad08fd", "parents": [ "40b0bb1e734700b81d2ec69367c035cd1537f4fa" ], "author": { "name": "Johannes Weiner", "email": "hannes@cmpxchg.org", "time": "Wed Feb 04 15:12:14 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Feb 05 12:56:48 2009 -0800" }, "message": "wait: prevent exclusive waiter starvation\n\nWith exclusive waiters, every process woken up through the wait queue must\nensure that the next waiter down the line is woken when it has finished.\n\nInterruptible waiters don\u0027t do that when aborting due to a signal. And if\nan aborting waiter is concurrently woken up through the waitqueue, noone\nwill ever wake up the next waiter.\n\nThis has been observed with __wait_on_bit_lock() used by\nlock_page_killable(): the first contender on the queue was aborting when\nthe actual lock holder woke it up concurrently. The aborted contender\ndidn\u0027t acquire the lock and therefor never did an unlock followed by\nwaking up the next waiter.\n\nAdd abort_exclusive_wait() which removes the process\u0027 wait descriptor from\nthe waitqueue, iff still queued, or wakes up the next waiter otherwise.\nIt does so under the waitqueue lock. Racing with a wake up means the\naborting process is either already woken (removed from the queue) and will\nwake up the next waiter, or it will remove itself from the queue and the\nconcurrent wake up will apply to the next waiter after it.\n\nUse abort_exclusive_wait() in __wait_event_interruptible_exclusive() and\n__wait_on_bit_lock() when they were interrupted by other means than a wake\nup through the queue.\n\n[akpm@linux-foundation.org: coding-style fixes]\nReported-by: Chris Mason \u003cchris.mason@oracle.com\u003e\nSigned-off-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nMentored-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Matthew Wilcox \u003cmatthew@wil.cx\u003e\nCc: Chuck Lever \u003ccel@citi.umich.edu\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: \u003cstable@kernel.org\u003e\t\t[\"after some testing\"]\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a25d644fc0e232f242d1f3baa63c149c42536ff0", "tree": "c5013caca7978d862f8ea1996c5933495fd7334a", "parents": [ "c80cfb0406c01bb5da91bfe30f5cb1fd96831138" ], "author": { "name": "Tejun Heo", "email": "tj@kernel.org", "time": "Wed Oct 15 22:01:38 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 16 11:21:31 2008 -0700" }, "message": "wait: kill is_sync_wait()\n\nis_sync_wait() is used to distinguish between sync and async waits.\nBasically sync waits are the ones initialized with init_waitqueue_entry()\nand async ones with init_waitqueue_func_entry(). The sync/async\ndistinction is used only in prepare_to_wait[_exclusive]() and its only\nfunction is to skip setting the current task state if the wait is async.\nThis has a few problems.\n\n* No one uses it. None of func_entry users use prepare_to_wait()\n functions, so the code path never gets executed.\n\n* The distinction is bogus. Maybe back when func_entry is used only\n by aio but it\u0027s now also used by epoll and in future possibly by 9p\n and poll/select.\n\n* Taking @state as argument and ignoring it silenly depending on how\n @wait is initialized is just a bad error-prone API.\n\n* It prevents func_entry waits from using wait-\u003eprivate for no good\n reason.\n\nThis patch kills is_sync_wait() and the associated code paths from\nprepare_to_wait[_exclusive](). As there was no user of these code paths,\nthis patch doesn\u0027t cause any behavior difference.\n\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\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": "7ad5b3a505e68cfdc342933d6e0fc0eaa5e0a4f7", "tree": "6715ffd8df509d3d53dea581bb97418a21bc7cbc", "parents": [ "fc9b52cd8f5f459b88adcf67c47668425ae31a78" ], "author": { "name": "Harvey Harrison", "email": "harvey.harrison@gmail.com", "time": "Fri Feb 08 04:19:53 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 08 09:22:31 2008 -0800" }, "message": "kernel: remove fastcall in kernel/*\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Harvey Harrison \u003charvey.harrison@gmail.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": "e64d66c8edf11629aa203328daf898775ee27dd4", "tree": "3b91bfac6774079eff7707214645f75a1484f20a", "parents": [ "6d8982d9b8f4b771754335f1398e406cc72003c3" ], "author": { "name": "Matthew Wilcox", "email": "matthew@wil.cx", "time": "Thu Dec 06 17:34:36 2007 -0500" }, "committer": { "name": "Matthew Wilcox", "email": "willy@linux.intel.com", "time": "Thu Dec 06 17:34:36 2007 -0500" }, "message": "wait: Use TASK_NORMAL\n\nAlso move wake_up_locked() to be with the related functions\n\nSigned-off-by: Matthew Wilcox \u003cwilly@linux.intel.com\u003e\n" }, { "commit": "59c51591a0ac7568824f541f57de967e88adaa07", "tree": "243d20eb0a26b76d5d312f39ec5a1ff60e036711", "parents": [ "02a3e59a088749c08b0293ee1535f5bf48f5926c" ], "author": { "name": "Michael Opdenacker", "email": "michael@free-electrons.com", "time": "Wed May 09 08:57:56 2007 +0200" }, "committer": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Wed May 09 08:57:56 2007 +0200" }, "message": "Fix occurrences of \"the the \"\n\nSigned-off-by: Michael Opdenacker \u003cmichael@free-electrons.com\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "21d71f513b6221f482ed6ad45e05f073ae67f319", "tree": "4b890613d46adce1391be4c5c954f5042968ba85", "parents": [ "92eb7a2f28d551acedeb5752263267a64b1f5ddf" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 10 04:45:32 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Jul 10 13:24:25 2006 -0700" }, "message": "[PATCH] uninline init_waitqueue_head()\n\nallyesconfig vmlinux size delta:\n\n text data bss dec filename\n 20736884 6073834 3075176 29885894 vmlinux.before\n 20721009 6073966 3075176 29870151 vmlinux.after\n\n~18 bytes per callsite, 15K of text size (~0.1%) saved.\n\n(as an added bonus this also removes a lockdep annotation.)\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "eb4542b98c81e22e08587b747b21986a45360999", "tree": "e983cc095333c11bed51950ed39ad3a51d140398", "parents": [ "243c7621aac4ed1aa79524c9a1cecf7c05a28124" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 03 00:25:07 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Jul 03 15:27:07 2006 -0700" }, "message": "[PATCH] lockdep: annotate waitqueues\n\nCreate one lock class for all waitqueue locks in the kernel. Has no effect on\nnon-lockdep kernels.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Arjan van de Ven \u003carjan@linux.intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "6ab3d5624e172c553004ecc862bfeac16d9d68b7", "tree": "6d98881fe91fd9583c109208d5c27131b93fa248", "parents": [ "e02169b682bc448ccdc819dc8639ed34a23cedd8" ], "author": { "name": "Jörn Engel", "email": "joern@wohnheim.fh-wedel.de", "time": "Fri Jun 30 19:25:36 2006 +0200" }, "committer": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Fri Jun 30 19:25:36 2006 +0200" }, "message": "Remove obsolete #include \u003clinux/config.h\u003e\n\nSigned-off-by: Jörn Engel \u003cjoern@wohnheim.fh-wedel.de\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "tree": "0bba044c4ce775e45a88a51686b5d9f90697ea9d", "parents": [], "author": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sat Apr 16 15:20:36 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sat Apr 16 15:20:36 2005 -0700" }, "message": "Linux-2.6.12-rc2\n\nInitial git repository build. I\u0027m not bothering with the full history,\neven though we have it. We can create a separate \"historical\" git\narchive of that later if we want to, and in the meantime it\u0027s about\n3.2GB when imported into git - space that would just make the early\ngit days unnecessarily complicated, when we don\u0027t have a lot of good\ninfrastructure for it.\n\nLet it rip!\n" } ] }