)]}' { "log": [ { "commit": "1557d33007f63dd96e5d15f33af389378e5f2e54", "tree": "06d05722b2ba5d2a67532f779fa8a88efe3c88f1", "parents": [ "6ec22f9b037fc0c2e00ddb7023fad279c365324d", "c656ae95d1c5c8ed5763356263ace2d03087efec" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Dec 08 07:38:50 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Dec 08 07:38:50 2009 -0800" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/sysctl-2.6\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/sysctl-2.6: (43 commits)\n security/tomoyo: Remove now unnecessary handling of security_sysctl.\n security/tomoyo: Add a special case to handle accesses through the internal proc mount.\n sysctl: Drop \u0026 in front of every proc_handler.\n sysctl: Remove CTL_NONE and CTL_UNNUMBERED\n sysctl: kill dead ctl_handler definitions.\n sysctl: Remove the last of the generic binary sysctl support\n sysctl net: Remove unused binary sysctl code\n sysctl security/tomoyo: Don\u0027t look at ctl_name\n sysctl arm: Remove binary sysctl support\n sysctl x86: Remove dead binary sysctl support\n sysctl sh: Remove dead binary sysctl support\n sysctl powerpc: Remove dead binary sysctl support\n sysctl ia64: Remove dead binary sysctl support\n sysctl s390: Remove dead sysctl binary support\n sysctl frv: Remove dead binary sysctl support\n sysctl mips/lasat: Remove dead binary sysctl support\n sysctl drivers: Remove dead binary sysctl support\n sysctl crypto: Remove dead binary sysctl support\n sysctl security/keys: Remove dead binary sysctl support\n sysctl kernel: Remove binary sysctl logic\n ...\n" }, { "commit": "f13a48bd798a159291ca583b95453171b88b7448", "tree": "a644293386e30ed5ab297e5943e57658e1d11e6a", "parents": [ "df87f8c06c7f562ef9d93b9d674eebf2ffb96f6a" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Tue Dec 01 15:36:11 2009 +0000" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Dec 01 08:20:31 2009 -0800" }, "message": "SLOW_WORK: Move slow_work\u0027s proc file to debugfs\n\nMove slow_work\u0027s debugging proc file to debugfs.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nRequested-and-acked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "fa1dae4906982b5d896c07613b1fe42456133b1c", "tree": "027dec5baeedbe25a7b645311b530a06d78b36f3", "parents": [ "6f054164322bc6c1233402b9ed6b40d4af39a98f" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Tue Dec 01 13:52:08 2009 +0000" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Dec 01 07:35:11 2009 -0800" }, "message": "SLOW_WORK: Fix the CONFIG_MODULES\u003dn case\n\nCommits 3d7a641 (\"SLOW_WORK: Wait for outstanding work items belonging to a\nmodule to clear\") introduced some code to make sure that all of a module\u0027s\nslow-work items were complete before that module was removed, and commit\n3bde31a (\"SLOW_WORK: Allow a requeueable work item to sleep till the thread is\nneeded\") further extended that, breaking it in the process if CONFIG_MODULES\u003dn:\n\n CC kernel/slow-work.o\n kernel/slow-work.c: In function \u0027slow_work_execute\u0027:\n kernel/slow-work.c:313: error: \u0027slow_work_thread_processing\u0027 undeclared (first use in this function)\n kernel/slow-work.c:313: error: (Each undeclared identifier is reported only once\n kernel/slow-work.c:313: error: for each function it appears in.)\n kernel/slow-work.c: In function \u0027slow_work_wait_for_items\u0027:\n kernel/slow-work.c:950: error: \u0027slow_work_unreg_sync_lock\u0027 undeclared (first use in this function)\n kernel/slow-work.c:951: error: \u0027slow_work_unreg_wq\u0027 undeclared (first use in this function)\n kernel/slow-work.c:961: error: \u0027slow_work_unreg_work_item\u0027 undeclared (first use in this function)\n kernel/slow-work.c:974: error: \u0027slow_work_unreg_module\u0027 undeclared (first use in this function)\n kernel/slow-work.c:977: error: \u0027slow_work_thread_processing\u0027 undeclared (first use in this function)\n make[1]: *** [kernel/slow-work.o] Error 1\n\nFix this by:\n\n (1) Extracting the bits of slow_work_execute() that are contingent on\n CONFIG_MODULES, and the bits that should be, into inline functions and\n placing them into the #ifdef\u0027d section that defines the relevant variables\n and adding stubs for moduleless kernels. This allows the removal of some\n #ifdefs.\n\n (2) #ifdef\u0027ing out the contents of slow_work_wait_for_items() in moduleless\n kernels.\n\nThe four functions related to handling module unloading synchronisation (and\ntheir associated variables) could be offloaded into a separate .c file, but\neach function is only used once and three of them are tiny, so doing so would\nprevent them from being inlined.\n\nReported-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3bde31a4ac225cb5805be02eff6eaaf7e0766ccd", "tree": "9fb757ab7d46e0c37fb5e88d3185f1861fbc794e", "parents": [ "31ba99d304494cb28fa8671ccc769c5543e1165d" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:10:57 2009 +0000" }, "committer": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:10:57 2009 +0000" }, "message": "SLOW_WORK: Allow a requeueable work item to sleep till the thread is needed\n\nAdd a function to allow a requeueable work item to sleep till the thread\nprocessing it is needed by the slow-work facility to perform other work.\n\nSometimes a work item can\u0027t progress immediately, but must wait for the\ncompletion of another work item that\u0027s currently being processed by another\nslow-work thread.\n\nIn some circumstances, the waiting item could instead - theoretically - put\nitself back on the queue and yield its thread back to the slow-work facility,\nthus waiting till it gets processing time again before attempting to progress.\nThis would allow other work items processing time on that thread.\n\nHowever, this only works if there is something on the queue for it to queue\nbehind - otherwise it will just get a thread again immediately, and will end\nup cycling between the queue and the thread, eating up valuable CPU time.\n\nSo, slow_work_sleep_till_thread_needed() is provided such that an item can put\nitself on a wait queue that will wake it up when the event it is actually\ninterested in occurs, then call this function in lieu of calling schedule().\n\nThis function will then sleep until either the item\u0027s event occurs or another\nwork item appears on the queue. If another work item is queued, but the\nitem\u0027s event hasn\u0027t occurred, then the work item should requeue itself and\nyield the thread back to the slow-work facility by returning.\n\nThis can be used by CacheFiles for an object that is being created on one\nthread to wait for an object being deleted on another thread where there is\nnothing on the queue for the creation to go and wait behind. As soon as an\nitem appears on the queue that could be given thread time instead, CacheFiles\ncan stick the creating object back on the queue and return to the slow-work\nfacility - assuming the object deletion didn\u0027t also complete.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\n" }, { "commit": "8fba10a42d191de612e60e7009c8f0313f90a9b3", "tree": "1e772fcc7ad3eb5bb3ca1c6cd156171295e6db25", "parents": [ "6b8268b17a1ffc942bc72d7d00274e433d6b6719" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:10:51 2009 +0000" }, "committer": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:10:51 2009 +0000" }, "message": "SLOW_WORK: Allow the work items to be viewed through a /proc file\n\nAllow the executing and queued work items to be viewed through a /proc file\nfor debugging purposes. The contents look something like the following:\n\n THR PID ITEM ADDR FL MARK DESC\n \u003d\u003d\u003d \u003d\u003d\u003d\u003d\u003d \u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d \u003d\u003d \u003d\u003d\u003d\u003d\u003d \u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n 0 3005 ffff880023f52348 a 952ms FSC: OBJ17d3: LOOK\n 1 3006 ffff880024e33668 2 160ms FSC: OBJ17e5 OP60d3b: Write1/Store fl\u003d2\n 2 3165 ffff8800296dd180 a 424ms FSC: OBJ17e4: LOOK\n 3 4089 ffff8800262c8d78 a 212ms FSC: OBJ17ea: CRTN\n 4 4090 ffff88002792bed8 2 388ms FSC: OBJ17e8 OP60d36: Write1/Store fl\u003d2\n 5 4092 ffff88002a0ef308 2 388ms FSC: OBJ17e7 OP60d2e: Write1/Store fl\u003d2\n 6 4094 ffff88002abaf4b8 2 132ms FSC: OBJ17e2 OP60d4e: Write1/Store fl\u003d2\n 7 4095 ffff88002bb188e0 a 388ms FSC: OBJ17e9: CRTN\n vsq - ffff880023d99668 1 308ms FSC: OBJ17e0 OP60f91: Write1/EnQ fl\u003d2\n vsq - ffff8800295d1740 1 212ms FSC: OBJ16be OP4d4b6: Write1/EnQ fl\u003d2\n vsq - ffff880025ba3308 1 160ms FSC: OBJ179a OP58dec: Write1/EnQ fl\u003d2\n vsq - ffff880024ec83e0 1 160ms FSC: OBJ17ae OP599f2: Write1/EnQ fl\u003d2\n vsq - ffff880026618e00 1 160ms FSC: OBJ17e6 OP60d33: Write1/EnQ fl\u003d2\n vsq - ffff880025a2a4b8 1 132ms FSC: OBJ16a2 OP4d583: Write1/EnQ fl\u003d2\n vsq - ffff880023cbe6d8 9 212ms FSC: OBJ17eb: LOOK\n vsq - ffff880024d37590 9 212ms FSC: OBJ17ec: LOOK\n vsq - ffff880027746cb0 9 212ms FSC: OBJ17ed: LOOK\n vsq - ffff880024d37ae8 9 212ms FSC: OBJ17ee: LOOK\n vsq - ffff880024d37cb0 9 212ms FSC: OBJ17ef: LOOK\n vsq - ffff880025036550 9 212ms FSC: OBJ17f0: LOOK\n vsq - ffff8800250368e0 9 212ms FSC: OBJ17f1: LOOK\n vsq - ffff880025036aa8 9 212ms FSC: OBJ17f2: LOOK\n\nIn the \u0027THR\u0027 column, executing items show the thread they\u0027re occupying and\nqueued threads indicate which queue they\u0027re on. \u0027PID\u0027 shows the process ID of\na slow-work thread that\u0027s executing something. \u0027FL\u0027 shows the work item flags.\n\u0027MARK\u0027 indicates how long since an item was queued or began executing. Lastly,\nthe \u0027DESC\u0027 column permits the owner of an item to give some information.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\n" }, { "commit": "6b8268b17a1ffc942bc72d7d00274e433d6b6719", "tree": "bd293facd4b805fc05588fcaf024e964a0bb1cca", "parents": [ "0160950297c08f8233c89b9f9e7dd59cfb080809" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Nov 19 18:10:47 2009 +0000" }, "committer": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:10:47 2009 +0000" }, "message": "SLOW_WORK: Add delayed_slow_work support\n\nThis adds support for starting slow work with a delay, similar\nto the functionality we have for workqueues.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\n" }, { "commit": "0160950297c08f8233c89b9f9e7dd59cfb080809", "tree": "4910bfb7ab5b4000a1679fd165d217ff48226268", "parents": [ "4d8bb2cbccf6dccaada509aafeb01c6205c9d8c4" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Nov 19 18:10:43 2009 +0000" }, "committer": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:10:43 2009 +0000" }, "message": "SLOW_WORK: Add support for cancellation of slow work\n\nAdd support for cancellation of queued slow work and delayed slow work items.\nThe cancellation functions will wait for items that are pending or undergoing\nexecution to be discarded by the slow work facility.\n\nAttempting to enqueue work that is in the process of being cancelled will\nresult in ECANCELED.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\n" }, { "commit": "4d8bb2cbccf6dccaada509aafeb01c6205c9d8c4", "tree": "116689de1f46840915e7f6f196ad334a990a2d5b", "parents": [ "3d7a641e544e428191667e8b1f83f96fa46dbd65" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Nov 19 18:10:39 2009 +0000" }, "committer": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:10:39 2009 +0000" }, "message": "SLOW_WORK: Make slow_work_ops -\u003eget_ref/-\u003eput_ref optional\n\nMake the ability for the slow-work facility to take references on a work item\noptional as not everyone requires this.\n\nEven the internal slow-work stubs them out, so those can be got rid of too.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\n" }, { "commit": "3d7a641e544e428191667e8b1f83f96fa46dbd65", "tree": "172aa672eca96b94f5531885b82abb82b43c7d8a", "parents": [ "66b00a7c93ec782d118d2c03bd599cfd041e80a1" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:10:23 2009 +0000" }, "committer": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:10:23 2009 +0000" }, "message": "SLOW_WORK: Wait for outstanding work items belonging to a module to clear\n\nWait for outstanding slow work items belonging to a module to clear when\nunregistering that module as a user of the facility. This prevents the put_ref\ncode of a work item from being taken away before it returns.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\n" }, { "commit": "6d4561110a3e9fa742aeec6717248a491dfb1878", "tree": "689e2abf19940416ce597ba56ed31026ff59bd21", "parents": [ "86926d0096279b9739ceeff40f68d3c33b9119a9" ], "author": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Mon Nov 16 03:11:48 2009 -0800" }, "committer": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Wed Nov 18 08:37:40 2009 -0800" }, "message": "sysctl: Drop \u0026 in front of every proc_handler.\n\nFor consistency drop \u0026 in front of every proc_handler. Explicity\ntaking the address is unnecessary and it prevents optimizations\nlike stubbing the proc_handlers to NULL.\n\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Joe Perches \u003cjoe@perches.com\u003e\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\n" }, { "commit": "56992309ccbe71f4321ddd50ee2f76f91b412c1a", "tree": "d2ffd767aa21cae9364769a25c6b181ccb8b3fb3", "parents": [ "ab09203e302b6e526f6930f3e460064b0f253ae9" ], "author": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Thu Nov 05 15:38:40 2009 -0800" }, "committer": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Thu Nov 12 02:04:55 2009 -0800" }, "message": "sysctl kernel: Remove binary sysctl logic\n\nNow that sys_sysctl is a generic wrapper around /proc/sys .ctl_name\nand .strategy members of sysctl tables are dead code. Remove them.\n\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\n" }, { "commit": "8d65af789f3e2cf4cfbdbf71a0f7a61ebcd41d38", "tree": "121df3bfffc7853ac6d2c514ad514d4a748a0933", "parents": [ "c0d0787b6d47d9f4d5e8bd321921104e854a9135" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Wed Sep 23 15:57:19 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Sep 24 07:21:04 2009 -0700" }, "message": "sysctl: remove \"struct file *\" argument of -\u003eproc_handler\n\nIt\u0027s unused.\n\nIt isn\u0027t needed -- read or write flag is already passed and sysctl\nshouldn\u0027t care about the rest.\n\nIt _was_ used in two places at arch/frv for some reason.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Ralf Baechle \u003cralf@linux-mips.org\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: James Morris \u003cjmorris@namei.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "009789f040b71699278e70a6664701c10065e430", "tree": "83692d9eec2773e1d78628120f8e36807efe233b", "parents": [ "b72b71c6cb6ecc564d4d5f9c512a7df269837846" ], "author": { "name": "Chris Peterson", "email": "cpeterso@cpeterso.com", "time": "Tue Jun 16 15:33:43 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jun 16 19:47:49 2009 -0700" }, "message": "slow-work: use round_jiffies() for thread pool\u0027s cull and OOM timers\n\nRound the slow work queue\u0027s cull and OOM timeouts to whole second boundary\nwith round_jiffies(). The slow work queue uses a pair of timers to cull\nidle threads and, after OOM, to delay new thread creation.\n\nThis patch also extracts the mod_timer() logic for the cull timer into a\nseparate helper function.\n\nBy rounding non-time-critical timers such as these to whole seconds, they\nwill be batched up to fire at the same time rather than being spread out.\nThis allows the CPU wake up less, which saves power.\n\nSigned-off-by: Chris Peterson \u003ccpeterso@cpeterso.com\u003e\nSigned-off-by: David Howells \u003cdhowells@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": "b415c49a864dab8ee90713833d642dd461eccae9", "tree": "f5e763afdab9a43ff632993d7be49e73d8a6df6c", "parents": [ "6adc74b7d03c06a8e15d51fe33c3d924ada9271a" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Thu Jun 11 13:12:55 2009 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jun 11 11:26:38 2009 -0700" }, "message": "slow_work_thread() should do the exclusive wait\n\nslow_work_thread() sleeps on slow_work_thread_wq without WQ_FLAG_EXCLUSIVE,\nthis means that slow_work_enqueue()-\u003e__wake_up(nr_exclusive \u003d\u003e 1) wakes up all\nkslowd threads. This is not what we want, so we change slow_work_thread() to\nuse prepare_to_wait_exclusive() instead.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "418df63c2d94f238ac7e1d1d53be35dd6b7a7252", "tree": "d9ab346ae46a45a4bff12fe7dbc615b7469d17a5", "parents": [ "3e241ff0c57cb610301009fe8c3b9da4c6877800" ], "author": { "name": "Jonathan Corbet", "email": "corbet@lwn.net", "time": "Wed Apr 22 12:01:49 2009 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Apr 24 07:47:59 2009 -0700" }, "message": "Delete slow-work timers properly\n\nSlow-work appears to delete its timer as soon as the first user\nunregisters, even though other users could be active. At the same time, it\nnever seems to delete slow_work_oom_timer. Arrange for both to happen in\nthe shutdown path.\n\nSigned-off-by: Jonathan Corbet \u003ccorbet@lwn.net\u003e\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8f0aa2f25b31ba27db84259141e52ee6ec0d2820", "tree": "f2935c02ac8508dacd125bb1c8bb6f4879fe778e", "parents": [ "12e22c5e4bc08ab4b05ac079fe40d9891c5e81a0" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Fri Apr 03 16:42:35 2009 +0100" }, "committer": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Fri Apr 03 16:42:35 2009 +0100" }, "message": "Document the slow work thread pool\n\nDocument the slow work thread pool.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: Steve Dickson \u003csteved@redhat.com\u003e\nAcked-by: Trond Myklebust \u003cTrond.Myklebust@netapp.com\u003e\nAcked-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nTested-by: Daire Byrne \u003cDaire.Byrne@framestore.com\u003e\n" }, { "commit": "12e22c5e4bc08ab4b05ac079fe40d9891c5e81a0", "tree": "e3d34a8f21d4c00dff311dfef564c59a76e1ae70", "parents": [ "109d9272c423f46604d45fedfe87e21ee0b25180" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Fri Apr 03 16:42:35 2009 +0100" }, "committer": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Fri Apr 03 16:42:35 2009 +0100" }, "message": "Make the slow work pool configurable\n\nMake the slow work pool configurable through /proc/sys/kernel/slow-work.\n\n (*) /proc/sys/kernel/slow-work/min-threads\n\n The minimum number of threads that should be in the pool as long as it is\n in use. This may be anywhere between 2 and max-threads.\n\n (*) /proc/sys/kernel/slow-work/max-threads\n\n The maximum number of threads that should in the pool. This may be\n anywhere between min-threads and 255 or NR_CPUS * 2, whichever is greater.\n\n (*) /proc/sys/kernel/slow-work/vslow-percentage\n\n The percentage of active threads in the pool that may be used to execute\n very slow work items. This may be between 1 and 99. The resultant number\n is bounded to between 1 and one fewer than the number of active threads.\n This ensures there is always at least one thread that can process very\n slow work items, and always at least one thread that won\u0027t.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nAcked-by: Steve Dickson \u003csteved@redhat.com\u003e\nAcked-by: Trond Myklebust \u003cTrond.Myklebust@netapp.com\u003e\nAcked-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nTested-by: Daire Byrne \u003cDaire.Byrne@framestore.com\u003e\n" }, { "commit": "109d9272c423f46604d45fedfe87e21ee0b25180", "tree": "b6bd1d94fd3e018ee97dedb577aa6757787db1a9", "parents": [ "07fe7cb7c7c179f473fd9c823348fd3eb5dad369" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Fri Apr 03 16:42:35 2009 +0100" }, "committer": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Fri Apr 03 16:42:35 2009 +0100" }, "message": "Make slow-work thread pool actually dynamic\n\nMake the slow-work thread pool actually dynamic in the number of threads it\ncontains. With this patch, it will both create additional threads when it has\nextra work to do, and cull excess threads that aren\u0027t doing anything.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nAcked-by: Steve Dickson \u003csteved@redhat.com\u003e\nAcked-by: Trond Myklebust \u003cTrond.Myklebust@netapp.com\u003e\nAcked-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nTested-by: Daire Byrne \u003cDaire.Byrne@framestore.com\u003e\n" }, { "commit": "07fe7cb7c7c179f473fd9c823348fd3eb5dad369", "tree": "516c959de929a4c39870629e550b3307601fa73f", "parents": [ "8fe74cf053de7ad2124a894996f84fa890a81093" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Fri Apr 03 16:42:35 2009 +0100" }, "committer": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Fri Apr 03 16:42:35 2009 +0100" }, "message": "Create a dynamically sized pool of threads for doing very slow work items\n\nCreate a dynamically sized pool of threads for doing very slow work items, such\nas invoking mkdir() or rmdir() - things that may take a long time and may\nsleep, holding mutexes/semaphores and hogging a thread, and are thus unsuitable\nfor workqueues.\n\nThe number of threads is always at least a settable minimum, but more are\nstarted when there\u0027s more work to do, up to a limit. Because of the nature of\nthe load, it\u0027s not suitable for a 1-thread-per-CPU type pool. A system with\none CPU may well want several threads.\n\nThis is used by FS-Cache to do slow caching operations in the background, such\nas looking up, creating or deleting cache objects.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nAcked-by: Steve Dickson \u003csteved@redhat.com\u003e\nAcked-by: Trond Myklebust \u003cTrond.Myklebust@netapp.com\u003e\nAcked-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nTested-by: Daire Byrne \u003cDaire.Byrne@framestore.com\u003e\n" } ] }