)]}' { "log": [ { "commit": "c1174876874dcf8986806e4dad3d7d07af20b439", "tree": "7e2ea14ba9421bddd63e1810716f1929c753e28b", "parents": [ "7f1b43936f0ecad14770634c021cf4a929aec74d" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Thu May 31 14:47:33 2012 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@kernel.org", "time": "Wed Jun 06 16:52:26 2012 +0200" }, "message": "sched: Fix domain iteration\n\nWeird topologies can lead to asymmetric domain setups. This needs\nfurther consideration since these setups are typically non-minimal\ntoo.\n\nFor now, make it work by adding an extra mask selecting which CPUs\nare allowed to iterate up.\n\nThe topology that triggered it is the one from David Rientjes:\n\n\t10 20 20 30\n\t20 10 20 20\n\t20 20 10 20\n\t30 20 20 10\n\nresulting in boxes that wouldn\u0027t even boot.\n\nReported-by: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLink: http://lkml.kernel.org/n/tip-3p86l9cuaqnxz7uxsojmz5rm@git.kernel.org\nSigned-off-by: Ingo Molnar \u003cmingo@kernel.org\u003e\n" }, { "commit": "556061b00c9f2fd6a5524b6bde823ef12f299ecf", "tree": "087891d70dbcd97cd23ac3eb92fad6a905c0f527", "parents": [ "870a0bb5d636156502769233d02a0d5791d4366a" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Fri May 11 17:31:26 2012 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@kernel.org", "time": "Mon May 14 15:05:27 2012 +0200" }, "message": "sched/nohz: Fix rq-\u003ecpu_load[] calculations\n\nWhile investigating why the load-balancer did funny I found that the\nrq-\u003ecpu_load[] tables were completely screwy.. a bit more digging\nrevealed that the updates that got through were missing ticks followed\nby a catchup of 2 ticks.\n\nThe catchup assumes the cpu was idle during that time (since only nohz\ncan cause missed ticks and the machine is idle etc..) this means that\nesp. the higher indices were significantly lower than they ought to\nbe.\n\nThe reason for this is that its not correct to compare against jiffies\non every jiffy on any other cpu than the cpu that updates jiffies.\n\nThis patch cludges around it by only doing the catch-up stuff from\nnohz_idle_balance() and doing the regular stuff unconditionally from\nthe tick.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: pjt@google.com\nCc: Venkatesh Pallipadi \u003cvenki@google.com\u003e\nLink: http://lkml.kernel.org/n/tip-tp4kj18xdd5aj4vvj0qg55s2@git.kernel.org\nSigned-off-by: Ingo Molnar \u003cmingo@kernel.org\u003e\n" }, { "commit": "c82513e513556a04f81aa511cd890acd23349c48", "tree": "dbccd379fffd75cd87513e4dd0e91ac597628382", "parents": [ "ad7687dde8780a0d618a3e3b5a62bb383696fc22" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Thu Apr 26 13:12:27 2012 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@kernel.org", "time": "Wed May 09 15:00:49 2012 +0200" }, "message": "sched: Change rq-\u003enr_running to unsigned int\n\nSince there\u0027s a PID space limit of 30bits (see\nfutex.h:FUTEX_TID_MASK) and allocating that many tasks (assuming a\nlower bound of 2 pages per task) would still take 8T of memory it\nseems reasonable to say that unsigned int is sufficient for\nrq-\u003enr_running.\n\nWhen we do get anywhere near that amount of tasks I suspect other\nthings would go funny, load-balancer load computations would really\nneed to be hoisted to 128bit etc.\n\nSo save a few bytes and convert rq-\u003enr_running and friends to\nunsigned int.\n\nSuggested-by: Ingo Molnar \u003cmingo@kernel.org\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLink: http://lkml.kernel.org/n/tip-y3tvyszjdmbibade5bw8zl81@git.kernel.org\nSigned-off-by: Ingo Molnar \u003cmingo@kernel.org\u003e\n" }, { "commit": "f22e08a79f3765fecf060b225a46931c94fb0a92", "tree": "2f02777e8893d03289ec0a7f5f414f3ff01c8c37", "parents": [ "f187e9fd68577cdd5f914659b6f7f11124e40485", "e3831edd59edf57ca11fc289f08961b20baf5146" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Mar 31 13:35:31 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Mar 31 13:35:31 2012 -0700" }, "message": "Merge branch \u0027sched-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip\n\nPull scheduler fixes from Ingo Molnar.\n\n* \u0027sched-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:\n sched: Fix incorrect usage of for_each_cpu_mask() in select_fallback_rq()\n sched: Fix __schedule_bug() output when called from an interrupt\n sched/arch: Introduce the finish_arch_post_lock_switch() scheduler callback\n" }, { "commit": "1f56ee7b68fecd45d25bdcf2eda7507797594424", "tree": "782ec71491cdfb0ce5d5117428be6c3af7070207", "parents": [ "6135fc1eb4b1c9ae5f535507ed59591bab51e630", "01f23e1630d944f7085cd8fd5793e31ea91c03d8" ], "author": { "name": "Ingo Molnar", "email": "mingo@kernel.org", "time": "Thu Mar 29 12:48:15 2012 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@kernel.org", "time": "Thu Mar 29 12:48:22 2012 +0200" }, "message": "Merge branch \u0027sched/arch\u0027 into sched/urgent\n\nMerge reason: It has not gone upstream via the ARM tree, merge it via\n the scheduler tree.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "2ba68940c893c8f0bfc8573c041254251bb6aeab", "tree": "fa83ebb01d32abd98123fa28f9f6f0b3eaeee25d", "parents": [ "9c2b957db1772ebf942ae7a9346b14eba6c8ca66", "600e145882802d6ccbfe2c4aea243d97caeb91a9" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Mar 20 10:31:44 2012 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Mar 20 10:31:44 2012 -0700" }, "message": "Merge branch \u0027sched-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip\n\nPull scheduler changes for v3.4 from Ingo Molnar\n\n* \u0027sched-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (27 commits)\n printk: Make it compile with !CONFIG_PRINTK\n sched/x86: Fix overflow in cyc2ns_offset\n sched: Fix nohz load accounting -- again!\n sched: Update yield() docs\n printk/sched: Introduce special printk_sched() for those awkward moments\n sched/nohz: Correctly initialize \u0027next_balance\u0027 in \u0027nohz\u0027 idle balancer\n sched: Cleanup cpu_active madness\n sched: Fix load-balance wreckage\n sched: Clean up parameter passing of proc_sched_autogroup_set_nice()\n sched: Ditch per cgroup task lists for load-balancing\n sched: Rename load-balancing fields\n sched: Move load-balancing arguments into helper struct\n sched/rt: Do not submit new work when PI-blocked\n sched/rt: Prevent idle task boosting\n sched/wait: Add __wake_up_all_locked() API\n sched/rt: Document scheduler related skip-resched-check sites\n sched/rt: Use schedule_preempt_disabled()\n sched/rt: Add schedule_preempt_disabled()\n sched/rt: Do not throttle when PI boosting\n sched/rt: Keep period timer ticking when rt throttling is active\n ...\n" }, { "commit": "01f23e1630d944f7085cd8fd5793e31ea91c03d8", "tree": "f21651af720e87721c3829ff69a41c5a9d8cb31d", "parents": [ "fde7d9049e55ab85a390be7f415d74c9f62dd0f9" ], "author": { "name": "Catalin Marinas", "email": "catalin.marinas@arm.com", "time": "Sun Nov 27 21:43:10 2011 +0000" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Mar 13 10:17:45 2012 +0100" }, "message": "sched/arch: Introduce the finish_arch_post_lock_switch() scheduler callback\n\nThis callback is called by the scheduler after rq-\u003elock has been released\nand interrupts enabled. It will be used in subsequent patches on the ARM\narchitecture.\n\nSigned-off-by: Catalin Marinas \u003ccatalin.marinas@arm.com\u003e\nReviewed-by: Will Deacon \u003cwill.deacon@arm.com\u003e\nReviewed-by: Frank Rowand \u003cfrank.rowand@am.sony.com\u003e\nTested-by: Will Deacon \u003cwill.deacon@arm.com\u003e\nTested-by: Marc Zyngier \u003cMarc.Zyngier@arm.com\u003e\nAcked-by: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nLink: http://lkml.kernel.org/n/20120313110840.7b444deb6b1bb902c15f3cdf@canb.auug.org.au\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "367456c756a6b84f493ca9cc5b17b1f5d38ef466", "tree": "0e95a2fa5cb25ea14e2841d84d4d2410ff383e33", "parents": [ "ddcdf6e7d9919d139031fa2a6addd9544a9a833e" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Mon Feb 20 21:49:09 2012 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Mar 01 13:08:37 2012 +0100" }, "message": "sched: Ditch per cgroup task lists for load-balancing\n\nPer cgroup load-balance has numerous problems, chief amongst them that\nthere is no real sane order in them. So stop pretending it makes sense\nand enqueue all tasks on a single list.\n\nThis also allows us to more easily fix the fwd progress issue\nuncovered by the lock-break stuff. Rotate the list on failure to\nmigreate and limit the total iterations to nr_running (which with\nreleasing the lock isn\u0027t strictly accurate but close enough).\n\nAlso add a filter that skips very light tasks on the first attempt\naround the list, this attempts to avoid shooting whole cgroups around\nwithout affecting over balance.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: pjt@google.com\nLink: http://lkml.kernel.org/n/tip-tx8yqydc7eimgq7i4rkc3a4g@git.kernel.org\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "c5905afb0ee6550b42c49213da1c22d67316c194", "tree": "253fdb322e6e5b257ffda3b9b66bce90a473a6f7", "parents": [ "1cfa60dc7d7c7cc774a44eee47ff135a644a1f31" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Feb 24 08:31:31 2012 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Feb 24 10:05:59 2012 +0100" }, "message": "static keys: Introduce \u0027struct static_key\u0027, static_key_true()/false() and static_key_slow_[inc|dec]()\n\nSo here\u0027s a boot tested patch on top of Jason\u0027s series that does\nall the cleanups I talked about and turns jump labels into a\nmore intuitive to use facility. It should also address the\nvarious misconceptions and confusions that surround jump labels.\n\nTypical usage scenarios:\n\n #include \u003clinux/static_key.h\u003e\n\n struct static_key key \u003d STATIC_KEY_INIT_TRUE;\n\n if (static_key_false(\u0026key))\n do unlikely code\n else\n do likely code\n\nOr:\n\n if (static_key_true(\u0026key))\n do likely code\n else\n do unlikely code\n\nThe static key is modified via:\n\n static_key_slow_inc(\u0026key);\n ...\n static_key_slow_dec(\u0026key);\n\nThe \u0027slow\u0027 prefix makes it abundantly clear that this is an\nexpensive operation.\n\nI\u0027ve updated all in-kernel code to use this everywhere. Note\nthat I (intentionally) have not pushed through the rename\nblindly through to the lowest levels: the actual jump-label\npatching arch facility should be named like that, so we want to\ndecouple jump labels from the static-key facility a bit.\n\nOn non-jump-label enabled architectures static keys default to\nlikely()/unlikely() branches.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nAcked-by: Jason Baron \u003cjbaron@redhat.com\u003e\nAcked-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: a.p.zijlstra@chello.nl\nCc: mathieu.desnoyers@efficios.com\nCc: davem@davemloft.net\nCc: ddaney.cavm@gmail.com\nCc: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nLink: http://lkml.kernel.org/r/20120222085809.GA26397@elte.hu\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "de5bdff7a72acc281219be2b8edeeca1fd81c542", "tree": "6a528beb1852e2fd7d444b47e8b4cc6e6be31108", "parents": [ "62f6536a630affe3176deb48554d27ee58b65077" ], "author": { "name": "Hiroshi Shimamoto", "email": "h-shimamoto@ct.jp.nec.com", "time": "Thu Feb 16 14:52:21 2012 +0900" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Feb 22 12:28:29 2012 +0100" }, "message": "sched: Make initial SCHED_RR timeslace DEF_TIMESLICE\n\nCurrent the initial SCHED_RR timeslice of init_task is HZ, which means\n1s, and is not same as the default SCHED_RR timeslice DEF_TIMESLICE.\n\nChange that initial timeslice to the DEF_TIMESLICE.\n\nSigned-off-by: Hiroshi Shimamoto \u003ch-shimamoto@ct.jp.nec.com\u003e\n[ s/DEF_TIMESLICE/RR_TIMESLICE/g ]\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLink: http://lkml.kernel.org/r/4F3C9995.3010800@ct.jp.nec.com\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "30fd049afcfed50e022704036e8629d6bdfe84e6", "tree": "829472524c157f1d7a769d088b2f9b70c9779c11", "parents": [ "4ec4412e1e91f44a3dcb97b6c9172a13fc78bac9" ], "author": { "name": "Rakib Mullick", "email": "rakib.mullick@gmail.com", "time": "Tue Jan 24 22:33:56 2012 +0600" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jan 27 13:28:53 2012 +0100" }, "message": "sched: Remove sched_switch\n\nCurrently we don\u0027t utilize the sched_switch field anymore.\n\nBut, simply removing sched_switch field from the middle of the\nsched_stat output will break tools.\n\nSo, to stay compatible we hardcode it to zero and remove the\nfield from the scheduler data structures.\n\nUpdate the schedstat documentation accordingly.\n\nSigned-off-by: Rakib Mullick \u003crakib.mullick@gmail.com\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLink: http://lkml.kernel.org/r/1327422836.27181.5.camel@localhost.localdomain\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "518cd62341786aa4e3839810832af2fbc0de1ea4", "tree": "bd28f7fce47887e9c5d33bd772c8380255ef3065", "parents": [ "612ef28a045efadb3a98d4492ead7806a146485d" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Wed Dec 07 15:07:31 2011 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Dec 21 10:34:44 2011 +0100" }, "message": "sched: Only queue remote wakeups when crossing cache boundaries\n\nMike reported a 13% drop in netperf TCP_RR performance due to the\nnew remote wakeup code. Suresh too noticed some performance issues\nwith it.\n\nReducing the IPIs to only cross cache domains solves the observed\nperformance issues.\n\nReported-by: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nReported-by: Mike Galbraith \u003cefault@gmx.de\u003e\nAcked-by: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nAcked-by: Mike Galbraith \u003cefault@gmx.de\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Chris Mason \u003cchris.mason@oracle.com\u003e\nCc: Dave Kleikamp \u003cdave.kleikamp@oracle.com\u003e\nLink: http://lkml.kernel.org/r/1323338531.17673.7.camel@twins\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "f8b6d1cc7dc15cf3de538b864eefaedad7a84d85", "tree": "084948d4bebc74a66231d95e03daaeb808640d66", "parents": [ "be726ffd1ef291c04c4d6632ac277afa1c281712" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Wed Jul 06 14:20:14 2011 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Dec 06 20:51:26 2011 +0100" }, "message": "sched: Use jump_labels for sched_feat\n\nNow that we initialize jump_labels before sched_init() we can use them\nfor the debug features without having to worry about a window where\nthey have the wrong setting.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLink: http://lkml.kernel.org/n/tip-vpreo4hal9e0kzqmg5y0io2k@git.kernel.org\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "54c707e98de9ca899e6552a47c797c62c45885ee", "tree": "61ec9be62b2b3db0201aca7c8eddb5e49239baf5", "parents": [ "b39e66eaf9c573f38133e894256caeaf9fd2a528" ], "author": { "name": "Glauber Costa", "email": "glommer@parallels.com", "time": "Mon Nov 28 14:45:19 2011 -0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Dec 06 20:51:21 2011 +0100" }, "message": "sched/accounting: Re-use scheduler statistics for the root cgroup\n\nRight now, after we collect tick statistics for user and system and store them\nin a well known location, we keep the same statistics again for cpuacct.\nSince cpuacct is hierarchical, the numbers for the root cgroup should be\nabsolutely equal to the system-wide numbers.\n\nSo it would be better to just use it: this patch changes cpuacct accounting\nin a way that the cpustat statistics are kept in a struct kernel_cpustat percpu\narray. In the root cgroup case, we just point it to the main array. The rest of\nthe hierarchy walk can be totally disabled later with a static branch - but I am\nnot doing it here.\n\nSigned-off-by: Glauber Costa \u003cglommer@parallels.com\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Paul Tuner \u003cpjt@google.com\u003e\nLink: http://lkml.kernel.org/r/1322498719-2255-4-git-send-email-glommer@parallels.com\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "b39e66eaf9c573f38133e894256caeaf9fd2a528", "tree": "316e239a62d589515bbe4c4b9b8c4fc8cac91715", "parents": [ "fdaabd800bdd60652a448994eeb77442180db6c0" ], "author": { "name": "Mike Galbraith", "email": "mgalbraith@suse.de", "time": "Tue Nov 22 15:20:07 2011 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Dec 06 20:51:20 2011 +0100" }, "message": "sched: Save some hrtick_start_fair cycles\n\nhrtick_start_fair() shows up in profiles even when disabled.\n\nv3.0.6\n\ntaskset -c 3 pipe-test\n\n PerfTop: 997 irqs/sec kernel:89.5% exact: 0.0% [1000Hz cycles], (all, CPU: 3)\n------------------------------------------------------------------------------------------------\n\n Virgin Patched\n samples pcnt function samples pcnt function\n _______ _____ ___________________________ _______ _____ ___________________________\n\n 2880.00 10.2% __schedule 3136.00 11.3% __schedule\n 1634.00 5.8% pipe_read 1615.00 5.8% pipe_read\n 1458.00 5.2% system_call 1534.00 5.5% system_call\n 1382.00 4.9% _raw_spin_lock_irqsave 1412.00 5.1% _raw_spin_lock_irqsave\n 1202.00 4.3% pipe_write 1255.00 4.5% copy_user_generic_string\n 1164.00 4.1% copy_user_generic_string 1241.00 4.5% __switch_to\n 1097.00 3.9% __switch_to 929.00 3.3% mutex_lock\n 872.00 3.1% mutex_lock 846.00 3.0% mutex_unlock\n 687.00 2.4% mutex_unlock 804.00 2.9% pipe_write\n 682.00 2.4% native_sched_clock 713.00 2.6% native_sched_clock\n 643.00 2.3% system_call_after_swapgs 653.00 2.3% _raw_spin_unlock_irqrestore\n 617.00 2.2% sched_clock_local 633.00 2.3% fsnotify\n 612.00 2.2% fsnotify 605.00 2.2% sched_clock_local\n 596.00 2.1% _raw_spin_unlock_irqrestore 593.00 2.1% system_call_after_swapgs\n 542.00 1.9% sysret_check 559.00 2.0% sysret_check\n 467.00 1.7% fget_light 472.00 1.7% fget_light\n 462.00 1.6% finish_task_switch 461.00 1.7% finish_task_switch\n 437.00 1.5% vfs_write 442.00 1.6% vfs_write\n 431.00 1.5% do_sync_write 428.00 1.5% do_sync_write\n 413.00 1.5% select_task_rq_fair 404.00 1.5% _raw_spin_lock_irq\n 386.00 1.4% update_curr 402.00 1.4% update_curr\n 385.00 1.4% rw_verify_area 389.00 1.4% do_sync_read\n 377.00 1.3% _raw_spin_lock_irq 378.00 1.4% vfs_read\n 369.00 1.3% do_sync_read 340.00 1.2% pipe_iov_copy_from_user\n 360.00 1.3% vfs_read 316.00 1.1% __wake_up_sync_key\n* 342.00 1.2% hrtick_start_fair 313.00 1.1% __wake_up_common\n\nSigned-off-by: Mike Galbraith \u003cefault@gmx.de\u003e\n[ fixed !CONFIG_SCHED_HRTICK borkage ]\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLink: http://lkml.kernel.org/r/1321971607.6855.17.camel@marge.simson.net\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "69e1e811dcc436a6b129dbef273ad9ec22d095ce", "tree": "f07179af4989178733727683796927948db9059a", "parents": [ "1c792db7f7957e2e34b9a164f08200e36a25dfd0" ], "author": { "name": "Suresh Siddha", "email": "suresh.b.siddha@intel.com", "time": "Thu Dec 01 17:07:33 2011 -0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Dec 06 09:06:32 2011 +0100" }, "message": "sched, nohz: Track nr_busy_cpus in the sched_group_power\n\nIntroduce nr_busy_cpus in the struct sched_group_power [Not in sched_group\nbecause sched groups are duplicated for the SD_OVERLAP scheduler domain]\nand for each cpu that enters and exits idle, this parameter will\nbe updated in each scheduler group of the scheduler domain that this cpu\nbelongs to.\n\nTo avoid the frequent update of this state as the cpu enters\nand exits idle, the update of the stat during idle exit is\ndelayed to the first timer tick that happens after the cpu becomes busy.\nThis is done using NOHZ_IDLE flag in the struct rq\u0027s nohz_flags.\n\nSigned-off-by: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nLink: http://lkml.kernel.org/r/20111202010832.555984323@sbsiddha-desk.sc.intel.com\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "1c792db7f7957e2e34b9a164f08200e36a25dfd0", "tree": "d1ab8d9e860e12b31f8553309b79cc65ff380fa5", "parents": [ "5b680fd61388abb9059fbc8e7a2f60f602bfce15" ], "author": { "name": "Suresh Siddha", "email": "suresh.b.siddha@intel.com", "time": "Thu Dec 01 17:07:32 2011 -0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Dec 06 09:06:30 2011 +0100" }, "message": "sched, nohz: Introduce nohz_flags in \u0027struct rq\u0027\n\nIntroduce nohz_flags in the struct rq, which will track these two flags\nfor now.\n\nNOHZ_TICK_STOPPED keeps track of the tick stopped status that gets set when\nthe tick is stopped. It will be used to update the nohz idle load balancer data\nstructures during the first busy tick after the tick is restarted. At this\nfirst busy tick after tickless idle, NOHZ_TICK_STOPPED flag will be reset.\nThis will minimize the nohz idle load balancer status updates that currently\nhappen for every tickless exit, making it more scalable when there\nare many logical cpu\u0027s that enter and exit idle often.\n\nNOHZ_BALANCE_KICK will track the need for nohz idle load balance\non this rq. This will replace the nohz_balance_kick in the rq, which was\nnot being updated atomically.\n\nSigned-off-by: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nLink: http://lkml.kernel.org/r/20111202010832.499438999@sbsiddha-desk.sc.intel.com\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "77e81365e0b7d7479fc444a21cea0cd4def70b45", "tree": "edb0aa41e7ca436f3e1097ea5ea9da6ebee4ec81", "parents": [ "b781a602ac745ee3d5d745276f1e1905a2c101f9" ], "author": { "name": "Suresh Siddha", "email": "suresh.b.siddha@intel.com", "time": "Thu Nov 17 11:08:23 2011 -0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Dec 06 08:51:25 2011 +0100" }, "message": "sched: Clean up domain traversal in select_idle_sibling()\n\nInstead of going through the scheduler domain hierarchy multiple times\n(for giving priority to an idle core over an idle SMT sibling in a busy\ncore), start with the highest scheduler domain with the SD_SHARE_PKG_RESOURCES\nflag and traverse the domain hierarchy down till we find an idle group.\n\nThis cleanup also addresses an issue reported by Mike where the recent\nchanges returned the busy thread even in the presence of an idle SMT\nsibling in single socket platforms.\n\nSigned-off-by: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nTested-by: Mike Galbraith \u003cefault@gmx.de\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLink: http://lkml.kernel.org/r/1321556904.15339.25.camel@sbsiddha-desk.sc.intel.com\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "391e43da797a96aeb65410281891f6d0b0e9611c", "tree": "0ce6784525a5a8f75b377170cf1a7d60abccea29", "parents": [ "029632fbb7b7c9d85063cc9eb470de6c54873df3" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Tue Nov 15 17:14:39 2011 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Nov 17 12:20:22 2011 +0100" }, "message": "sched: Move all scheduler bits into kernel/sched/\n\nThere\u0027s too many sched*.[ch] files in kernel/, give them their own\ndirectory.\n\n(No code changed, other than Makefile glue added.)\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "029632fbb7b7c9d85063cc9eb470de6c54873df3", "tree": "511303f0fa32f997c4b2f68364b032555b6a642e", "parents": [ "60686317da05049385eae86e44c710cde535f95f" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Tue Oct 25 10:00:11 2011 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Nov 17 12:20:19 2011 +0100" }, "message": "sched: Make separate sched*.c translation units\n\nSince once needs to do something at conferences and fixing compile\nwarnings doesn\u0027t actually require much if any attention I decided\nto break up the sched.c #include \"*.c\" fest.\n\nThis further modularizes the scheduler code.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLink: http://lkml.kernel.org/n/tip-x0fcd3mnp8f9c99grcpewmhi@git.kernel.org\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" } ] }