)]}' { "log": [ { "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": "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": "31ba99d304494cb28fa8671ccc769c5543e1165d", "tree": "ea2d839fb70798cf6a3b55ccc87f749e14e14f1d", "parents": [ "8fba10a42d191de612e60e7009c8f0313f90a9b3" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:10:53 2009 +0000" }, "committer": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:10:53 2009 +0000" }, "message": "SLOW_WORK: Allow the owner of a work item to determine if it is queued or not\n\nAdd a function (slow_work_is_queued()) to permit the owner of a work item to\ndetermine if the item is queued or not.\n\nThe work item is counted as being queued if it is actually on the queue, not\njust if it is pending. If it is executing and pending, then it is not on the\nqueue, but will rather be put back on the queue when execution finishes.\n\nThis permits a caller to quickly work out if it may be able to put another,\ndependent work item on the queue behind it, or whether it will have to wait\ntill that is finished.\n\nThis can be used by CacheFiles to work out whether the creation a new object\ncan be immediately deferred when it has to wait for an old object to be\ndeleted, or whether a wait must take place. If a wait is necessary, then the\nslow-work thread can otherwise get blocked, preventing the deletion from\ntaking place.\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": "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" } ] }