)]}'
{
  "log": [
    {
      "commit": "3270476a6c0ce322354df8679652f060d66526dc",
      "tree": "db58846beb7c5e1c1b50b7e2f1c2538320408c26",
      "parents": [
        "4ce62e9e30cacc26885cab133ad1de358dd79f21"
      ],
      "author": {
        "name": "Tejun Heo",
        "email": "tj@kernel.org",
        "time": "Fri Jul 13 22:16:45 2012 -0700"
      },
      "committer": {
        "name": "Tejun Heo",
        "email": "tj@kernel.org",
        "time": "Fri Jul 13 22:24:45 2012 -0700"
      },
      "message": "workqueue: reimplement WQ_HIGHPRI using a separate worker_pool\n\nWQ_HIGHPRI was implemented by queueing highpri work items at the head\nof the global worklist.  Other than queueing at the head, they weren\u0027t\nhandled differently; unfortunately, this could lead to execution\nlatency of a few seconds on heavily loaded systems.\n\nNow that workqueue code has been updated to deal with multiple\nworker_pools per global_cwq, this patch reimplements WQ_HIGHPRI using\na separate worker_pool.  NR_WORKER_POOLS is bumped to two and\ngcwq-\u003epools[0] is used for normal pri work items and -\u003epools[1] for\nhighpri.  Highpri workers get -20 nice level and has \u0027H\u0027 suffix in\ntheir names.  Note that this change increases the number of kworkers\nper cpu.\n\nPOOL_HIGHPRI_PENDING, pool_determine_ins_pos() and highpri chain\nwakeup code in process_one_work() are no longer used and removed.\n\nThis allows proper prioritization of highpri work items and removes\nhigh execution latency of highpri work items.\n\nv2: nr_running indexing bug in get_pool_nr_running() fixed.\n\nv3: Refreshed for the get_pool_nr_running() update in the previous\n    patch.\n\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\nReported-by: Josh Hunt \u003cjoshhunt00@gmail.com\u003e\nLKML-Reference: \u003cCAKA\u003dqzaHqwZ8eqpLNFjxnO2fX-tgAOjmpvxgBFjv6dJeQaOW1w@mail.gmail.com\u003e\nCc: Tony Luck \u003ctony.luck@intel.com\u003e\nCc: Fengguang Wu \u003cfengguang.wu@intel.com\u003e\n"
    },
    {
      "commit": "e2de9e0862778f4aba103027ce575efbddb8117f",
      "tree": "22e002c6a8a56f5bcd5897fabd568ec54e243ca9",
      "parents": [
        "6aba74f2791287ec407e0f92487a725a25908067"
      ],
      "author": {
        "name": "Florian Mickler",
        "email": "florian@mickler.org",
        "time": "Thu Mar 31 13:40:42 2011 +0200"
      },
      "committer": {
        "name": "Tejun Heo",
        "email": "tj@kernel.org",
        "time": "Thu Mar 31 13:40:42 2011 +0200"
      },
      "message": "workqueue: Document debugging tricks\n\nIt is not obvious how to debug run-away workers.\n\nThese are some tips given by Tejun on lkml.\n\nSigned-off-by: Florian Mickler \u003cflorian@mickler.org\u003e\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\n"
    },
    {
      "commit": "58a69cb47ec6991bf006a3e5d202e8571b0327a4",
      "tree": "56abdf817649c352f70bff3263f9351ed6c42062",
      "parents": [
        "7576958a9d5a4a677ad7dd40901cdbb6c1110c98"
      ],
      "author": {
        "name": "Tejun Heo",
        "email": "tj@kernel.org",
        "time": "Wed Feb 16 09:25:31 2011 +0100"
      },
      "committer": {
        "name": "Tejun Heo",
        "email": "tj@kernel.org",
        "time": "Wed Feb 16 17:48:59 2011 +0100"
      },
      "message": "workqueue, freezer: unify spelling of \u0027freeze\u0027 + \u0027able\u0027 to \u0027freezable\u0027\n\nThere are two spellings in use for \u0027freeze\u0027 + \u0027able\u0027 - \u0027freezable\u0027 and\n\u0027freezeable\u0027.  The former is the more prominent one.  The latter is\nmostly used by workqueue and in a few other odd places.  Unify the\nspelling to \u0027freezable\u0027.\n\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\nReported-by: Alan Stern \u003cstern@rowland.harvard.edu\u003e\nAcked-by: \"Rafael J. Wysocki\" \u003crjw@sisk.pl\u003e\nAcked-by: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\nAcked-by: Dmitry Torokhov \u003cdtor@mail.ru\u003e\nCc: David Woodhouse \u003cdwmw2@infradead.org\u003e\nCc: Alex Dubov \u003coakad@yahoo.com\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: Steven Whitehouse \u003cswhiteho@redhat.com\u003e\n"
    },
    {
      "commit": "6370a6ad3b53df90b4700977f7718118a2cd524a",
      "tree": "2d1f45a19e66329813ce133b18f920d8c450b0c0",
      "parents": [
        "30310045dd20a286cf3800f063f79b468e132fb1"
      ],
      "author": {
        "name": "Tejun Heo",
        "email": "tj@kernel.org",
        "time": "Mon Oct 11 15:12:27 2010 +0200"
      },
      "committer": {
        "name": "Tejun Heo",
        "email": "tj@kernel.org",
        "time": "Mon Oct 11 15:20:26 2010 +0200"
      },
      "message": "workqueue: add and use WQ_MEM_RECLAIM flag\n\nAdd WQ_MEM_RECLAIM flag which currently maps to WQ_RESCUER, mark\nWQ_RESCUER as internal and replace all external WQ_RESCUER usages to\nWQ_MEM_RECLAIM.\n\nThis makes the API users express the intent of the workqueue instead\nof indicating the internal mechanism used to guarantee forward\nprogress.  This is also to make it cleaner to add more semantics to\nWQ_MEM_RECLAIM.  For example, if deemed necessary, memory reclaim\nworkqueues can be made highpri.\n\nThis patch doesn\u0027t introduce any functional change.\n\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\nCc: Jeff Garzik \u003cjgarzik@pobox.com\u003e\nCc: Dave Chinner \u003cdavid@fromorbit.com\u003e\nCc: Steven Whitehouse \u003cswhiteho@redhat.com\u003e\n"
    },
    {
      "commit": "c54fce6eff197d9c57c97afbf6c9722ce434fc8f",
      "tree": "c40c9bf65638399b13c47688f20e761cdd0fa89c",
      "parents": [
        "84e1d836ef0759a152578a961894824bde89596f"
      ],
      "author": {
        "name": "Tejun Heo",
        "email": "tj@kernel.org",
        "time": "Fri Sep 10 16:51:36 2010 +0200"
      },
      "committer": {
        "name": "Tejun Heo",
        "email": "tj@kernel.org",
        "time": "Mon Sep 13 10:26:52 2010 +0200"
      },
      "message": "workqueue: add documentation\n\nUpdate copyright notice and add Documentation/workqueue.txt.\n\nRandy Dunlap, Dave Chinner: misc fixes.\n\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\nReviewed-By: Florian Mickler \u003cflorian@mickler.org\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nCc: Dave Chinner \u003cdavid@fromorbit.com\u003e\n"
    }
  ]
}