)]}' { "log": [ { "commit": "2cd4d0ea19713304963dbb2de5073700bfe253f5", "tree": "39a374d0918db059413f6709184669da63af81ef", "parents": [ "018a2212950457b1093e504cd834aa0fe749da6c" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Jul 26 13:40:43 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Jul 26 13:40:43 2007 +0200" }, "message": "[PATCH] sched: make cpu_clock() not use the rq clock\n\nit is enough to disable interrupts to get the precise rq-clock\nof the local CPU.\n\nthis also solves an NMI watchdog regression: the NMI watchdog\ncalls touch_softlockup_watchdog(), which might deadlock on\nrq-\u003elock if the NMI hits an rq-locked critical section.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "018a2212950457b1093e504cd834aa0fe749da6c", "tree": "52ea323f648dbb09bb6c46cb8c28d3187add19e1", "parents": [ "e107be36efb2a233833e8c9899039a370e4b2318" ], "author": { "name": "Satoru Takeuchi", "email": "takeuchi_satoru@jp.fujitsu.com", "time": "Thu Jul 26 13:40:43 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Jul 26 13:40:43 2007 +0200" }, "message": "[PATCH] sched: remove unused rq-\u003eload_balance_class\n\nRemove unused rq-\u003eload_balance_class.\n\nSigned-off-by: Satoru Takeuchi \u003ctakeuchi_satoru@jp.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "e107be36efb2a233833e8c9899039a370e4b2318", "tree": "655955aa81aefeff441c412adaafe9b51a00ff56", "parents": [ "b47e8608a08766ef8121cd747d3aaf6c3dc22649" ], "author": { "name": "Avi Kivity", "email": "avi@qumranet.com", "time": "Thu Jul 26 13:40:43 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Jul 26 13:40:43 2007 +0200" }, "message": "[PATCH] sched: arch preempt notifier mechanism\n\nThis adds a general mechanism whereby a task can request the scheduler to\nnotify it whenever it is preempted or scheduled back in. This allows the\ntask to swap any special-purpose registers like the fpu or Intel\u0027s VT\nregisters.\n\nSigned-off-by: Avi Kivity \u003cavi@qumranet.com\u003e\n[ mingo@elte.hu: fixes, cleanups ]\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "e436d80085133858bf2613a630365e8a0459fd58", "tree": "c579410a12ed63d94e3a40a023634c7df4aebc76", "parents": [ "969bb4e4032dac67287951d8f6642a3b5119694e" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Jul 19 21:28:35 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Jul 19 21:28:35 2007 +0200" }, "message": "[PATCH] sched: implement cpu_clock(cpu) high-speed time source\n\nImplement the cpu_clock(cpu) interface for kernel-internal use:\nhigh-speed (but slightly incorrect) per-cpu clock constructed from\nsched_clock().\n\nThis API, unused at the moment, will be used in the future by blktrace,\nby the softlockup-watchdog, by printk and by lockstat.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "969bb4e4032dac67287951d8f6642a3b5119694e", "tree": "2056749332226e750394001ec29d43514c14d0b6", "parents": [ "9439aab8dbc33c2c03c3a19dba267360383ba38c" ], "author": { "name": "Suresh Siddha", "email": "suresh.b.siddha@intel.com", "time": "Thu Jul 19 21:28:35 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Jul 19 21:28:35 2007 +0200" }, "message": "[PATCH] sched: fix the all pinned logic in load_balance_newidle()\n\nnr_moved is not the correct check for triggering all pinned logic. Fix\nthe all pinned logic in the case of load_balance_newidle().\n\nSigned-off-by: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "9439aab8dbc33c2c03c3a19dba267360383ba38c", "tree": "b6405b709b7bf60216290f9d81aec133faea6adf", "parents": [ "c41917df8a1adde34864116ce2231a7fe308d2ff" ], "author": { "name": "Suresh Siddha", "email": "suresh.b.siddha@intel.com", "time": "Thu Jul 19 21:28:35 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Jul 19 21:28:35 2007 +0200" }, "message": "[PATCH] sched: fix newly idle load balance in case of SMT\n\nIn the presence of SMT, newly idle balance was never happening for\nmulti-core and SMP domains (even when both the logical siblings are\nidle).\n\nIf thread 0 is already idle and when thread 1 is about to go to idle,\nnewly idle load balance always think that one of the threads is not idle\nand skips doing the newly idle load balance for multi-core and SMP\ndomains.\n\nThis is because of the idle_cpu() macro, which checks if the current\nprocess on a cpu is an idle process. But this is not the case for the\nthread doing the load_balance_newidle().\n\nFix this by using runqueue\u0027s nr_running field instead of idle_cpu(). And\nalso skip the logic of \u0027only one idle cpu in the group will be doing\nload balancing\u0027 during newly idle case.\n\nSigned-off-by: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "f34e3b61f2be9628bd41244f3ecc42009c5eced5", "tree": "192a64c12f84b3d69b9bf12ba56c2c7d86bc269b", "parents": [ "5fb7dc37dc16fbc8b80d81318a582201ef7e280d" ], "author": { "name": "Fenghua Yu", "email": "fenghua.yu@intel.com", "time": "Thu Jul 19 01:48:13 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:45 2007 -0700" }, "message": "use the new percpu interface for shared data\n\nCurrently most of the per cpu data, which is accessed by different cpus,\nhas a ____cacheline_aligned_in_smp attribute. Move all this data to the\nnew per cpu shared data section: .data.percpu.shared_aligned.\n\nThis will seperate the percpu data which is referenced frequently by other\ncpus from the local only percpu data.\n\nSigned-off-by: Fenghua Yu \u003cfenghua.yu@intel.com\u003e\nAcked-by: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "831441862956fffa17b9801db37e6ea1650b0f69", "tree": "b0334921341f8f1734bdd3243de76d676329d21c", "parents": [ "787d2214c19bcc9b6ac48af0ce098277a801eded" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Tue Jul 17 04:03:35 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:02 2007 -0700" }, "message": "Freezer: make kernel threads nonfreezable by default\n\nCurrently, the freezer treats all tasks as freezable, except for the kernel\nthreads that explicitly set the PF_NOFREEZE flag for themselves. This\napproach is problematic, since it requires every kernel thread to either\nset PF_NOFREEZE explicitly, or call try_to_freeze(), even if it doesn\u0027t\ncare for the freezing of tasks at all.\n\nIt seems better to only require the kernel threads that want to or need to\nbe frozen to use some freezer-related code and to remove any\nfreezer-related code from the other (nonfreezable) kernel threads, which is\ndone in this patch.\n\nThe patch causes all kernel threads to be nonfreezable by default (ie. to\nhave PF_NOFREEZE set by default) and introduces the set_freezable()\nfunction that should be called by the freezable kernel threads in order to\nunset PF_NOFREEZE. It also makes all of the currently freezable kernel\nthreads call set_freezable(), so it shouldn\u0027t cause any (intentional)\nchange of behaviour to appear. Additionally, it updates documentation to\ndescribe the freezing of tasks more accurately.\n\n[akpm@linux-foundation.org: build fixes]\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nAcked-by: Nigel Cunningham \u003cnigel@nigel.suspend2.net\u003e\nCc: Pavel Machek \u003cpavel@ucw.cz\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e4af30be8fd0bed0e8f96e4e1ebd546a3dfa8f2b", "tree": "83e4ee65d6481ae35efc86d56a6be0e2872dd5b1", "parents": [ "5714d2de93fbb156c5e45fb101a2b4f0cae8fbb7" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 16 09:46:31 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 16 09:46:31 2007 +0200" }, "message": "[PATCH] sched: prettify prio_to_wmult[]\n\nprettify the prio_to_wmult[] array. (this could have saved us from the typos)\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "5714d2de93fbb156c5e45fb101a2b4f0cae8fbb7", "tree": "50f6958246a6247e77816770989cb638c2ff99f1", "parents": [ "f9153ee6c71cb9ab38de3b8ed66b1c3fa27c3f7d" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 16 09:46:31 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 16 09:46:31 2007 +0200" }, "message": "[PATCH] sched: document prio_to_wmult[]\n\ndocument prio_to_wmult[].\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "f9153ee6c71cb9ab38de3b8ed66b1c3fa27c3f7d", "tree": "77a00afe63230a59f7e10cd034eb467bbb1d5430", "parents": [ "5926c50b83b626991c8c38efbca2020ee96b215f" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 16 09:46:30 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 16 09:46:30 2007 +0200" }, "message": "[PATCH] sched: improve weight-array comments\n\nimprove the comments around the wmult array (which controls the weight\nof niced tasks). Clarify that to achieve a 10% difference in CPU\nutilization, a weight multiplier of 1.25 has to be used.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "4fd885170bf13841ada921495b7b00c4b9971cf9", "tree": "504a949de4700d7d995aab93ff941930b9e05ce0", "parents": [ "af09f1e4b3214569de93bc9309c35014e5c8a3d0" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri Jul 13 21:43:55 2007 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Jul 13 16:45:43 2007 -0700" }, "message": "CFS: Fix missing digit off in wmult table\n\nRoman Zippel noticed another inconsistency of the wmult table.\n\nwmult[16] has a missing digit.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4bd77321a833077c5c9ac7b9d284e261e4a8906e", "tree": "e24fadab783702c410b5bcf075f32f17ed11e58a", "parents": [ "45f384a64f0769bb9a3caf0516de88a629f48e61" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jul 11 21:21:47 2007 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Jul 13 10:11:17 2007 -0700" }, "message": "[PATCH] sched: fix show_task()/show_tasks() output\n\nfix show_task()/show_tasks() output:\n\n- there\u0027s no sibling info anymore\n\n- the fields were not aligned properly with the description\n\n- get rid of the lazy-TLB output: it\u0027s been quite some time since\n we last had a bug there, and when we had a bug it wasnt helped a\n bit by this debug output.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a5968df8737eda477d9d1038f5428ebd4d0884e1", "tree": "59b8c15aa6a7dee6eb6ce5a9aa1e970b7a183f65", "parents": [ "e127031f4f76dc367c5d2f9d883715730dd82f7d" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jul 11 21:21:47 2007 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Jul 13 10:10:08 2007 -0700" }, "message": "[PATCH] sched: allow larger granularity\n\nAllow granularity up to 100 msecs, instead of 10 msecs.\n(needed on larger boxes)\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e127031f4f76dc367c5d2f9d883715730dd82f7d", "tree": "0617840dfa144c56c9c011475d27ba015806d28f", "parents": [ "4eb6bf6bfb580afaf1e1a1d30cba17a078530cf4" ], "author": { "name": "Mike Galbraith", "email": "efault@gmx.de", "time": "Wed Jul 11 21:21:47 2007 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Jul 13 10:09:02 2007 -0700" }, "message": "[PATCH] sched: fix prio_to_wmult[] for nice 1\n\nThere\u0027s a typo in the values in prio_to_wmult[] for nice level 1. While\nit did not cause bad CPU distribution, but caused more rescheduling\nbetween nice-0 and nice-1 tasks than necessary.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c31f2e8a42c41efa46397732656ddf48cc77593e", "tree": "440218407395cfa69f6e2c4fcb1188ffe1f96c97", "parents": [ "6fb43d7b50e49a36f8be3199141bec473e5ecb00" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:52:01 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:52:01 2007 +0200" }, "message": "sched: add CFS credits\n\nadd credits for recent major scheduler contributions:\n\n Con Kolivas, for pioneering the fair-scheduling approach\n Peter Williams, for smpnice\n Mike Galbraith, for interactivity tuning of CFS\n Srivatsa Vaddagiri, for group scheduling enhancements\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "0fec171cdbd7763ef86cbaccb91f3708de6a9003", "tree": "cfbc2617b6cf2542699172ab430ecc97ef1f2d3e", "parents": [ "9761eea8516d1ff2c7b185e283c5d81cfc307acb" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:52:01 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:52:01 2007 +0200" }, "message": "sched: clean up sleep_on() APIs\n\nclean up the sleep_on() APIs:\n\n - do not use fastcall\n - replace fragile macro magic with proper inline functions\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "9761eea8516d1ff2c7b185e283c5d81cfc307acb", "tree": "31da44facd8b111988ebf48c7f44df2e1d6c8206", "parents": [ "23bdd703a585a869f2eb32fb9f66749d0476d71e" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:52:00 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:52:00 2007 +0200" }, "message": "sched: style cleanups\n\n4 small style cleanups to sched.c: checkpatch.pl is now happy about\nthe totality of sched.c [ignoring false positives] - yay! ;-)\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "b2cfba19f67228e78e48177187f6b07f4107c784", "tree": "f7309130f1fac8bf781eb0ddb8e42740af919817", "parents": [ "0c57d5893e4a9857ff22ec9e379f6bdbdad50850" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:52:00 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:52:00 2007 +0200" }, "message": "sched: remove unused rq types from sched.c\n\nremove unused rq types from sched.c, now that we switched\nover to CFS.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "634fa8c97cc8f4ee2ae1dea7200ff0df762405e7", "tree": "1133c527fb93d2c81924fb1c1b82fd9913a73fc9", "parents": [ "dff06c157b6089b774514337769a3c1b7ccccf6c" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:52:00 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:52:00 2007 +0200" }, "message": "sched: remove interactivity types\n\nremove now unused interactivity-heuristics related defined and\ntypes of the old scheduler.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "dff06c157b6089b774514337769a3c1b7ccccf6c", "tree": "41d02979a90c06d6c7421aad19759ef81e9bf055", "parents": [ "ad46c2c4ebcead75cd364a79b63b134393094fb9" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:52:00 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:52:00 2007 +0200" }, "message": "sched: clean up include files in sched.c\n\nclean up include files in sched.c, they were still old-style \u003casm/\u003e.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "1b9f19c2125dd1021b9327111dc40b14b557ee12", "tree": "139bfbf6f43fa957821f95ebc9c5f1d43b177271", "parents": [ "bb29ab26863c022743143f27956cc0ca362f258c" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:59 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:59 2007 +0200" }, "message": "sched: turn on the use of unstable events\n\nmake use of sched-clock-unstable events.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "bb29ab26863c022743143f27956cc0ca362f258c", "tree": "f8106b8a82d4abe9c3b217c7ca96307539a945ad", "parents": [ "dd41f596cda0d7d6e4a8b139ffdfabcefdd46528" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:59 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:59 2007 +0200" }, "message": "sched: x86, track TSC-unstable events\n\ntrack TSC-unstable events and propagate it to the scheduler code.\nAlso allow sched_clock() to be used when the TSC is unstable,\nthe rq_clock() wrapper creates a reliable clock out of it.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "dd41f596cda0d7d6e4a8b139ffdfabcefdd46528", "tree": "6f0e3677b348c3038f60c9d0cf165301771ece48", "parents": [ "f3479f10c5d667e591f4417a0bba78e221924206" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:59 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:59 2007 +0200" }, "message": "sched: cfs core code\n\napply the CFS core code.\n\nthis change switches over the scheduler core to CFS\u0027s modular\ndesign and makes use of kernel/sched_fair/rt/idletask.c to implement\nLinux\u0027s scheduling policies.\n\nthanks to Andrew Morton and Thomas Gleixner for lots of detailed review\nfeedback and for fixlets.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Mike Galbraith \u003cefault@gmx.de\u003e\nSigned-off-by: Dmitry Adamushko \u003cdmitry.adamushko@gmail.com\u003e\nSigned-off-by: Srivatsa Vaddagiri \u003cvatsa@linux.vnet.ibm.com\u003e\n" }, { "commit": "f3479f10c5d667e591f4417a0bba78e221924206", "tree": "b79d1aa84c8e80261beab4af90c29d3686efcbf0", "parents": [ "c18a17329b3389315e8a138d998b217077509c13" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:59 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:59 2007 +0200" }, "message": "sched: remove the sleep-bonus interactivity code\n\nremove the sleep-bonus interactivity code from the core scheduler.\n\nscheduling policy is implemented in the policy modules, and CFS does\nnot need such type of heuristics.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "c18a17329b3389315e8a138d998b217077509c13", "tree": "6425c0a3a5eebc9ea78f79506fa610e09f335bf2", "parents": [ "f2ac58ee617fd9f6cd9922fbcd291b661d7c9954" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:59 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:59 2007 +0200" }, "message": "sched: remove expired_starving()\n\nremove the expired_starving() heuristics from the core scheduler.\n\nCFS does not need it, and this did not really work well in practice\nanyway, due to the rq-\u003enr_running multiplier to STARVATION_LIMIT.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "f2ac58ee617fd9f6cd9922fbcd291b661d7c9954", "tree": "6eee6329575aafba0efe055b8f8f3c39674b1196", "parents": [ "45bf76df4814a4cd1c57226ae001c464467cb656" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:59 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:59 2007 +0200" }, "message": "sched: remove sleep_type\n\nremove the sleep_type heuristics from the core scheduler - scheduling\npolicy is implemented in the scheduling-policy modules. (and CFS does\nnot use this type of sleep-type heuristics)\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "45bf76df4814a4cd1c57226ae001c464467cb656", "tree": "866d425d59043cdc93620d91860aacf2e58447e8", "parents": [ "14531189f0a1071b928586e9e1a89eceac91d95f" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:59 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:59 2007 +0200" }, "message": "sched: cfs, add load-calculation methods\n\nadd the new load-calculation methods of CFS.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "14531189f0a1071b928586e9e1a89eceac91d95f", "tree": "bb5ddb4a284e42b76a2f9378788ddb0ec4c8689f", "parents": [ "71f8bd4600521fecb08644072052b85853a5a615" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:59 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:59 2007 +0200" }, "message": "sched: clean up __normal_prio() position\n\nclean up: move __normal_prio() in head of normal_prio().\n\nno code changed.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "71f8bd4600521fecb08644072052b85853a5a615", "tree": "4d0a963ee30df7a1f64fc8f5c0a6b2f8e541952a", "parents": [ "c24d20dbef948487cd14f15dbf04644142e9f886" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:59 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:59 2007 +0200" }, "message": "sched: cleanup: move dequeue/enqueue_task()\n\ncleanup: move dequeue/enqueue_task() to a more logical place, to\nnot split up __normal_prio()/normal_prio().\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "c24d20dbef948487cd14f15dbf04644142e9f886", "tree": "afdf0f55982daeb07fad9953e2f9285861d8857e", "parents": [ "62480d13d5d1812176e969a47e2db78a5398d02e" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:59 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:59 2007 +0200" }, "message": "sched: move around resched_task()\n\nmove resched_task()/resched_cpu() into the \u0027public interfaces\u0027\nsection of sched.c, for use by kernel/sched_fair/rt/idletask.c\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "e05606d3301525aa67b081ad9fccade2b31ab35a", "tree": "2a3e5a477dfca70ce32f3ea8dbc5e16034c98c23", "parents": [ "138a8aeb5b9e5c5abd5e5ec22b6d1848e7e9c50b" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:59 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:59 2007 +0200" }, "message": "sched: clean up the rt priority macros\n\nclean up the rt priority macros, pointed out by Andrew Morton.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "138a8aeb5b9e5c5abd5e5ec22b6d1848e7e9c50b", "tree": "c109206cd95dd22c94dd24e27703a13bbbc80b0c", "parents": [ "41b86e9c510ae66639bf29d3201e1d2384a7fde6" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:58 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:58 2007 +0200" }, "message": "sched: add cfs_rq ops\n\nadd the set_task_cfs_rq() abstraction needed by CONFIG_FAIR_GROUP_SCHED.\n\n(not activated yet)\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "41b86e9c510ae66639bf29d3201e1d2384a7fde6", "tree": "f340b94f53be08e2fbba2344deb985f9ecb4a036", "parents": [ "20d315d42aed95423a7203e1d7e84086004b5a00" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:58 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:58 2007 +0200" }, "message": "sched: make posix-cpu-timers use CFS\u0027s accounting information\n\nupdate the posix-cpu-timers code to use CFS\u0027s CPU accounting information.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "20d315d42aed95423a7203e1d7e84086004b5a00", "tree": "3649d00c3ed1053783727333de1291a71bdb3ca4", "parents": [ "6aa645ea5f7a246702e07f29edc7075d487ae4a3" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:58 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:58 2007 +0200" }, "message": "sched: add rq_clock()/__rq_clock()\n\nadd rq_clock()/__rq_clock(), a robust wrapper around sched_clock(),\nused by CFS. It protects against common type of sched_clock() problems\n(caused by hardware): time warps forwards and backwards.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "6aa645ea5f7a246702e07f29edc7075d487ae4a3", "tree": "e59f5426c6668262ef082eb46f49c963822b0d36", "parents": [ "20b8a59f2461e1be911dce2cfafefab9d22e4eee" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:58 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:58 2007 +0200" }, "message": "sched: cfs rq data types\n\nadd the CFS rq data types to sched.c.\n\n(the old scheduler fields are still intact, they are removed\n by a later patch)\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "425e0968a25fa3f111f9919964cac079738140b5", "tree": "0b5165947477446d1a3680bf970689ded93c2931", "parents": [ "1df21055e34b6a68d62cf0c524b9e52deebd7ead" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:58 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:58 2007 +0200" }, "message": "sched: move code into kernel/sched_stats.h\n\ncreate sched_stats.h and move sched.c schedstats code into it.\nThis cleans up sched.c a bit.\n\nno code changes are caused by this patch.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "1df21055e34b6a68d62cf0c524b9e52deebd7ead", "tree": "b3611a364b289340d6b5016eba9f53a37b6b1de2", "parents": [ "4da1ce6d9c7e2a6d9236bf4dcfd33cf506082794" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:58 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:58 2007 +0200" }, "message": "sched: add init_idle_bootup_task()\n\nadd the init_idle_bootup_task() callback to the bootup thread,\nunused at the moment. (CFS will use it to switch the scheduling\nclass of the boot thread to the idle class)\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "f64f61145a38f7039e4f1c0b50dcc3fbe70ec28e", "tree": "5864c65e858dc320ab16d6025132bd26d4f54e7e", "parents": [ "c65cc8705256ad7524c97564b4fe3ca9782bf6d1" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:58 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:58 2007 +0200" }, "message": "sched: remove sched_exit()\n\nremove sched_exit(): the elaborate dance of us trying to recover\ntimeslices given to child tasks never really worked.\n\nCFS does not need it either.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "c65cc8705256ad7524c97564b4fe3ca9782bf6d1", "tree": "f51e32d6b5ec813bdee5b623dd36f9af3967e8fd", "parents": [ "0437e109e1841607f2988891eaa36c531c6aa6ac" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:58 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:58 2007 +0200" }, "message": "sched: uninline set_task_cpu()\n\nuninline set_task_cpu(): CFS will add more code to it.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "0437e109e1841607f2988891eaa36c531c6aa6ac", "tree": "e9d8f170786f7e33d4c5829cb008cf38d42a2014", "parents": [ "0e6aca43e08a62a48d6770e9a159dbec167bf4c6" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:57 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:57 2007 +0200" }, "message": "sched: zap the migration init / cache-hot balancing code\n\nthe SMP load-balancer uses the boot-time migration-cost estimation\ncode to attempt to improve the quality of balancing. The reason for\nthis code is that the discrete priority queues do not preserve\nthe order of scheduling accurately, so the load-balancer skips\ntasks that were running on a CPU \u0027recently\u0027.\n\nthis code is fundamental fragile: the boot-time migration cost detector\ndoesnt really work on systems that had large L3 caches, it caused boot\ndelays on large systems and the whole cache-hot concept made the\nbalancing code pretty undeterministic as well.\n\n(and hey, i wrote most of it, so i can say it out loud that it sucks ;-)\n\nunder CFS the same purpose of cache affinity can be achieved without\nany special cache-hot special-case: tasks are sorted in the \u0027timeline\u0027\ntree and the SMP balancer picks tasks from the left side of the\ntree, thus the most cache-cold task is balanced automatically.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "d15bcfdbe1818478891d714343f037cfe60875f0", "tree": "62362e16a1b189161d0c163085898043e6844a5e", "parents": [ "7dcca30a32aadb0520417521b0c44f42d09fe05c" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:57 2007 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 09 18:51:57 2007 +0200" }, "message": "sched: rename idle_type/SCHED_IDLE\n\nenum idle_type (used by the load-balancer) clashes with the\nSCHED_IDLE name that we want to introduce. \u0027CPU_IDLE\u0027 instead\nof \u0027SCHED_IDLE\u0027 is more descriptive as well.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "92c4ca5c3a5e180e9762438db235f41d192cb955", "tree": "814af0cfd84986f75e1e581f854eeb4f6ab42c35", "parents": [ "849663430268db63a9c3c7467984e4e530ded901" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sat Jun 23 17:16:33 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Jun 24 08:59:11 2007 -0700" }, "message": "sched: fix next_interval determination in idle_balance()\n\nThe intervals of domains that do not have SD_BALANCE_NEWIDLE must be\nconsidered for the calculation of the time of the next balance. Otherwise\nwe may defer rebalancing forever.\n\nSiddha also spotted that the conversion of the balance interval\nto jiffies is missing. Fix that to.\n\nFrom: Srivatsa Vaddagiri \u003cvatsa@linux.vnet.ibm.com\u003e\n\nalso continue the loop if !(sd-\u003eflags \u0026 SD_LOAD_BALANCE).\n\nTested-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\n\nIt did in fact trigger under all three of mainline, CFS, and -rt including CFS\n-- see below for a couple of emails from last Friday giving results for these\nthree on the AMD box (where it happened) and on a single-quad NUMA-Q system\n(where it did not, at least not with such severity).\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "fa490cfd15d7ce0900097cc4e60cfd7a76381138", "tree": "37c0294ed6f6f9e0362db974c4136979a37d9ecd", "parents": [ "a0f98a1cb7d27c656de450ba56efd31bdc59065e" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jun 18 09:34:40 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jun 18 11:52:55 2007 -0700" }, "message": "Fix possible runqueue lock starvation in wait_task_inactive()\n\nMiklos Szeredi reported very long pauses (several seconds, sometimes\nmore) on his T60 (with a Core2Duo) which he managed to track down to\nwait_task_inactive()\u0027s open-coded busy-loop.\n\nHe observed that an interrupt on one core tries to acquire the\nrunqueue-lock but does not succeed in doing so for a very long time -\nwhile wait_task_inactive() on the other core loops waiting for the first\ncore to deschedule a task (which it wont do while spinning in an\ninterrupt handler).\n\nThis rewrites wait_task_inactive() to do all its waiting optimistically\nwithout any locks taken at all, and then just double-check the end\nresult with the proper runqueue lock held over just a very short\nsection. If there were races in the optimistic wait, of a preemption\nevent scheduled the process away, we simply re-synchronize, and start\nover.\n\nSo the code now looks like this:\n\n\trepeat:\n\t\t/* Unlocked, optimistic looping! */\n\t\trq \u003d task_rq(p);\n\t\twhile (task_running(rq, p))\n\t\t\tcpu_relax();\n\n\t\t/* Get the *real* values */\n\t\trq \u003d task_rq_lock(p, \u0026flags);\n\t\trunning \u003d task_running(rq, p);\n\t\tarray \u003d p-\u003earray;\n\t\ttask_rq_unlock(rq, \u0026flags);\n\n\t\t/* Check them.. */\n\t\tif (unlikely(running)) {\n\t\t\tcpu_relax();\n\t\t\tgoto repeat;\n\t\t}\n\n\t\t/* Preempted away? Yield if so.. */\n\t\tif (unlikely(array)) {\n\t\t\tyield();\n\t\t\tgoto repeat;\n\t\t}\n\nBasically, that first \"while()\" loop is done entirely without any\nlocking at all (and doesn\u0027t check for the case where the target process\nmight have been preempted away), and so it\u0027s possibly \"incorrect\", but\nwe don\u0027t really care. Both the runqueue used, and the \"task_running()\"\ncheck might be the wrong tests, but they won\u0027t oops - they just mean\nthat we could possibly get the wrong results due to lack of locking and\nexit the loop early in the case of a race condition.\n\nSo once we\u0027ve exited the loop, we then get the proper (and careful) rq\nlock, and check the running/runnable state _safely_. And if it turns\nout that our quick-and-dirty and unsafe loop was wrong after all, we\njust go back and try it all again.\n\n(The patch also adds a lot of comments, which is the actual bulk of it\nall, to make it more obvious why we can do these things without holding\nthe locks).\n\nThanks to Miklos for all the testing and tracking it down.\n\nTested-by: Miklos Szeredi \u003cmiklos@szeredi.hu\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a0f98a1cb7d27c656de450ba56efd31bdc59065e", "tree": "8ff6c211cd190aa6152e8ef4bd9f142277ed4a9f", "parents": [ "4cc21505a09354ade787de368bd697a1bba3b213" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Jun 17 18:37:45 2007 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jun 18 11:52:55 2007 -0700" }, "message": "sched: fix SysRq-N (normalize RT tasks)\n\nGene Heskett reported the following problem while testing CFS: SysRq-N\nis not always effective in normalizing tasks back to SCHED_OTHER.\n\nThe reason for that turns out to be the following bug:\n\n - normalize_rt_tasks() uses for_each_process() to iterate through all\n tasks in the system. The problem is, this method does not iterate\n through all tasks, it iterates through all thread groups.\n\nThe proper mechanism to enumerate over all threads is to use a\ndo_each_thread() + while_each_thread() loop.\n\nReported-by: Gene Heskett \u003cgene.heskett@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "98d8256739f2c6c636fa2da359f5949c739ae839", "tree": "e2f92238779ff3012b47a8dd93d57b86b6949793", "parents": [ "40acc095302aee380491df5f58d98945243468ec" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed May 23 13:58:18 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 23 20:14:15 2007 -0700" }, "message": "Prevent going idle with softirq pending\n\nThe NOHZ patch contains a check for softirqs pending when a CPU goes idle.\nThe BUG is unrelated to NOHZ, it just was made visible by the NOHZ patch.\nThe BUG showed up mainly on P4 / hyperthreading enabled machines which lead\nthe investigations into the wrong direction in the first place. The real\ncause is in cond_resched_softirq():\n\ncond_resched_softirq() is enabling softirqs without invoking the softirq\ndaemon when softirqs are pending. This leads to the warning message in the\nNOHZ idle code:\n\nt1 runs softirq disabled code on CPU#0\ninterrupt happens, softirq is raised, but deferred (softirqs disabled)\nt1 calls cond_resched_softirq()\n\tenables softirqs via _local_bh_enable()\n\tcalls schedule()\nt2 runs\nt1 is migrated to CPU#1\nt2 is done and invokes idle()\nNOHZ detects the pending softirq\n\nFix: change _local_bh_enable() to local_bh_enable() so the softirq\ndaemon is invoked.\n\nThanks to Anant Nitya for debugging this with great patience !\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8bb7844286fb8c9fce6f65d8288aeb09d03a5e0d", "tree": "f4e305edaedbde05774bb1e4acd89a9475661d2e", "parents": [ "f37bc2712b54ec641e0c0c8634f1a4b61d9956c0" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Wed May 09 02:35:10 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:56 2007 -0700" }, "message": "Add suspend-related notifications for CPU hotplug\n\nSince nonboot CPUs are now disabled after tasks and devices have been\nfrozen and the CPU hotplug infrastructure is used for this purpose, we need\nspecial CPU hotplug notifications that will help the CPU-hotplug-aware\nsubsystems distinguish normal CPU hotplug events from CPU hotplug events\nrelated to a system-wide suspend or resume operation in progress. This\npatch introduces such notifications and causes them to be used during\nsuspend and resume transitions. It also changes all of the\nCPU-hotplug-aware subsystems to take these notifications into consideration\n(for now they are handled in the same way as the corresponding \"normal\"\nones).\n\n[oleg@tv-sign.ru: cleanups]\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nCc: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nCc: Pavel Machek \u003cpavel@ucw.cz\u003e\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5be9361cdff17fc76fa0c3e262ead94158555f16", "tree": "c0fd48bc0a39a2ba8a71677467f3d4e164b40f65", "parents": [ "baaca49f415b25fdbe2a8f3c22b39929e450fbfd" ], "author": { "name": "Gautham R Shenoy", "email": "ego@in.ibm.com", "time": "Wed May 09 02:34:04 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:51 2007 -0700" }, "message": "Eliminate lock_cpu_hotplug in kernel/schedc\n\nEliminate lock_cpu_hotplug from kernel/sched.c and use sched_hotcpu_mutex\ninstead to postpone a hotplug event.\n\nIn the migration_call hotcpu callback function, take sched_hotcpu_mutex\nwhile handling the event CPU_LOCK_ACQUIRE and release it while handling\nCPU_LOCK_RELEASE event.\n\n[akpm@linux-foundation.org: fix deadlock]\nSigned-off-by: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d5f9f942c601fdebe57f7805e4b4fbad9c28ada8", "tree": "6a212ceabd844fbaf517a13a9f885be5ab1c59b5", "parents": [ "da4e8ca376a1b3dca470eba14dcec321a6a27b8b" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Tue May 08 20:27:06 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 20:41:15 2007 -0700" }, "message": "revert \u0027sched: redundant reschedule when set_user_nice() boosts a prio of a task from the \"expired\" array\u0027\n\nRevert commit bd53f96ca54a21c07e7a0ae1886fa623d370b85f.\n\nCon says:\n\nThis is no good, sorry. The one I saw originally was with the staircase\ndeadline cpu scheduler in situ and was different.\n\n #define TASK_PREEMPTS_CURR(p, rq) \\\n ((p)-\u003eprio \u003c (rq)-\u003ecurr-\u003eprio)\n (((p)-\u003eprio \u003c (rq)-\u003ecurr-\u003eprio) \u0026\u0026 ((p)-\u003earray \u003d\u003d (rq)-\u003eactive))\n\nThis will fail to wake up a runqueue for a task that has been migrated to the\nexpired array of a runqueue which is otherwise idle which can happen with smp\nbalancing,\n\nCc: Dmitry Adamushko \u003cdmitry.adamushko@gmail.com\u003e\nCc: Con Kolivas \u003ckernel@kolivas.org\u003e\nCc: 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": "c3396620cace20639bdf380f893f4dccad090d91", "tree": "90e4a76b014809e4773eb4393f64d92791ecaba5", "parents": [ "bd53f96ca54a21c07e7a0ae1886fa623d370b85f" ], "author": { "name": "Siddha, Suresh B", "email": "suresh.b.siddha@intel.com", "time": "Tue May 08 00:33:09 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:17 2007 -0700" }, "message": "sched: align rq to cacheline boundary\n\nAlign the per cpu runqueue to the cacheline boundary. This will minimize\nthe number of cachelines touched during remote wakeup.\n\nSigned-off-by: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Ravikiran G Thirumalai \u003ckiran@scalex86.org\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "bd53f96ca54a21c07e7a0ae1886fa623d370b85f", "tree": "c908772406a055fcaa8a8742a36f61014a99b20a", "parents": [ "4953198b6ce07b008b0f1c2edd41c9d027a118b4" ], "author": { "name": "Dmitry Adamushko", "email": "dmitry.adamushko@gmail.com", "time": "Tue May 08 00:33:06 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:17 2007 -0700" }, "message": "sched: redundant reschedule when set_user_nice() boosts a prio of a task from the \"expired\" array\n\n- Make TASK_PREEMPTS_CURR(task, rq) return \"true\" only if the task\u0027s prio\n is higher than the current\u0027s one and the task is in the \"active\" array.\n This ensures we don\u0027t make redundant resched_task() calls when the task\n is in the \"expired\" array (as may happen now in set_user_prio(),\n rt_mutex_setprio() and pull_task() ) ;\n\n- generalise conditions for a call to resched_task() in set_user_nice(),\n rt_mutex_setprio() and sched_setscheduler()\n\nSigned-off-by: Dmitry Adamushko \u003cdmitry.adamushko@gmail.com\u003e\nCc: Con Kolivas \u003ckernel@kolivas.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": "4953198b6ce07b008b0f1c2edd41c9d027a118b4", "tree": "dc0f500aae58c84ee7d422ac11990956ecbf9673", "parents": [ "5517d86bea237c1d7078840182d9ebc0fe4c1afc" ], "author": { "name": "Siddha, Suresh B", "email": "suresh.b.siddha@intel.com", "time": "Tue May 08 00:33:01 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:17 2007 -0700" }, "message": "sched: optimize siblings status check logic in wake_idle()\n\nWhen a logical cpu \u0027x\u0027 already has more than one process running, then most\nlikely the siblings of that cpu \u0027x\u0027 must be busy. Otherwise the idle\nsiblings would have likely(in most of the scenarios) picked up the extra\nload making the load on \u0027x\u0027 atmost one.\n\nUse this logic to eliminate the siblings status check and minimize the cache\nmisses encountered on a heavily loaded system.\n\nSigned-off-by: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\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": "5517d86bea237c1d7078840182d9ebc0fe4c1afc", "tree": "67f1999895313878bfa904c66dffb7066f3c8d91", "parents": [ "46cb4b7c88fa5517f64b5bee42939ea3614cddcb" ], "author": { "name": "Eric Dumazet", "email": "dada1@cosmosbay.com", "time": "Tue May 08 00:32:57 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:17 2007 -0700" }, "message": "Speed up divides by cpu_power in scheduler\n\nI noticed expensive divides done in try_to_wakeup() and\nfind_busiest_group() on a bi dual core Opteron machine (total of 4 cores),\nmoderatly loaded (15.000 context switch per second)\n\noprofile numbers :\n\nCPU: AMD64 processors, speed 2600.05 MHz (estimated)\nCounted CPU_CLK_UNHALTED events (Cycles outside of halt state) with a unit\nmask of 0x00 (No unit mask) count 50000\nsamples % symbol name\n...\n613914 1.0498 try_to_wake_up\n 834 0.0013 :ffffffff80227ae1: div %rcx\n77513 0.1191 :ffffffff80227ae4: mov %rax,%r11\n\n608893 1.0413 find_busiest_group\n 1841 0.0031 :ffffffff802260bf: div %rdi\n140109 0.2394 :ffffffff802260c2: test %sil,%sil\n\nSome of these divides can use the reciprocal divides we introduced some\ntime ago (currently used in slab AFAIK)\n\nWe can assume a load will fit in a 32bits number, because with a\nSCHED_LOAD_SCALE\u003d128 value, its still a theorical limit of 33554432\n\nWhen/if we reach this limit one day, probably cpus will have a fast\nhardware divide and we can zap the reciprocal divide trick.\n\nIngo suggested to rename cpu_power to __cpu_power to make clear it should\nnot be modified without changing its reciprocal value too.\n\nI did not convert the divide in cpu_avg_load_per_task(), because tracking\nnr_running changes may be not worth it ? We could use a static table of 32\nreciprocal values but it would add a conditional branch and table lookup.\n\n[akpm@linux-foundation.org: !SMP build fix]\nSigned-off-by: Eric Dumazet \u003cdada1@cosmosbay.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": "46cb4b7c88fa5517f64b5bee42939ea3614cddcb", "tree": "429b8092394974ae787bf0cfaefe5c7b6a1da782", "parents": [ "bdecea3a9282d529b54954f3f1e59877629baba1" ], "author": { "name": "Siddha, Suresh B", "email": "suresh.b.siddha@intel.com", "time": "Tue May 08 00:32:51 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:17 2007 -0700" }, "message": "sched: dynticks idle load balancing\n\nFix the process idle load balancing in the presence of dynticks. cpus for\nwhich ticks are stopped will sleep till the next event wakes it up.\nPotentially these sleeps can be for large durations and during which today,\nthere is no periodic idle load balancing being done.\n\nThis patch nominates an owner among the idle cpus, which does the idle load\nbalancing on behalf of the other idle cpus. And once all the cpus are\ncompletely idle, then we can stop this idle load balancing too. Checks added\nin fast path are minimized. Whenever there are busy cpus in the system, there\nwill be an owner(idle cpu) doing the system wide idle load balancing.\n\nOpen items:\n1. Intelligent owner selection (like an idle core in a busy package).\n2. Merge with rcu\u0027s nohz_cpu_mask?\n\nSigned-off-by: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "bdecea3a9282d529b54954f3f1e59877629baba1", "tree": "c7330b1cec4b4a9bf18657bc99100276343efc38", "parents": [ "2bd7e20e0d24325b0799544bc8105cc57cc8e2aa" ], "author": { "name": "Siddha, Suresh B", "email": "suresh.b.siddha@intel.com", "time": "Tue May 08 00:32:48 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:17 2007 -0700" }, "message": "sched: fix idle load balancing in softirqd context\n\nPeriodic load balancing in recent kernels happen in the softirq. In\ncertain -rt configurations, these softirqs are handled in softirqd context.\n And hence the check for idle processor was always returning busy (as\nnr_running \u003e 1).\n\nThis patch captures the idle information at the tick and passes this info\nto softirq context through an element \u0027idle_at_tick\u0027 in rq.\n\n[kernel@kolivas.org: Fix reverse idle at tick logic]\nSigned-off-by: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "04c9167f91e309c9c4ea982992aa08e83b2eb42e", "tree": "b15e7bed8eb2e22e96971bbe3156a00683c70909", "parents": [ "966812dc98e6a7fcdf759cbfa0efab77500a8868" ], "author": { "name": "Jeremy Fitzhardinge", "email": "jeremy@goop.org", "time": "Tue May 08 00:28:05 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:06 2007 -0700" }, "message": "add touch_all_softlockup_watchdogs()\n\nAdd touch_all_softlockup_watchdogs() to allow the softlockup watchdog\ntimers on all cpus to be updated. This is used to prevent sysrq-t from\ngenerating a spurious watchdog message when generating lots of output.\n\nSoftlockup watchdogs use sched_clock() as its timebase, which is inherently\nper-cpu (at least, when it is measuring unstolen time). Because of this,\nit isn\u0027t possible for one CPU to directly update the other CPU\u0027s timers,\nbut it is possible to tell the other CPUs to do update themselves\nappropriately.\n\nSigned-off-by: Jeremy Fitzhardinge \u003cjeremy@xensource.com\u003e\nAcked-by: Chris Lalancette \u003cclalance@redhat.com\u003e\nSigned-off-by: Prarit Bhargava \u003cprarit@redhat.com\u003e\nCc: Rick Lindsley \u003cricklind@us.ibm.com\u003e\nCc: 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": "476f35348eb8d2a827765992899fea78b7dcc46f", "tree": "81dbace9de3d4ffa3ecc67bffe265134962117bd", "parents": [ "aee16b3cee2746880e40945a9b5bff4f309cfbc4" ], "author": { "name": "Christoph Lameter", "email": "clameter@engr.sgi.com", "time": "Sun May 06 14:48:58 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon May 07 12:12:51 2007 -0700" }, "message": "Safer nr_node_ids and nr_node_ids determination and initial values\n\nThe nr_cpu_ids value is currently only calculated in smp_init. However, it\nmay be needed before (SLUB needs it on kmem_cache_init!) and other kernel\ncomponents may also want to allocate dynamically sized per cpu array before\nsmp_init. So move the determination of possible cpus into sched_init()\nwhere we already loop over all possible cpus early in boot.\n\nAlso initialize both nr_node_ids and nr_cpu_ids with the highest value they\ncould take. If we have accidental users before these values are determined\nthen the current valud of 0 may cause too small per cpu and per node arrays\nto be allocated. If it is set to the maximum possible then we only waste\nsome memory for early boot users.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "39bc89fd4019b164002adaacef92c4140e37955a", "tree": "34ff87b8d8c2984af2015dd8c01177df88815214", "parents": [ "20f09390b2da2432309afe8aaa0bd64ec64c4584" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Apr 25 20:50:03 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Apr 27 10:46:51 2007 -0700" }, "message": "make SysRq-T show all tasks again\n\nshow_state() (SysRq-T) developed the buggy habbit of not showing\nTASK_RUNNING tasks. This was due to the mistaken belief that state_filter\n\u003d\u003d -1 would be a pass-through filter - while in reality it did not let\nTASK_RUNNING \u003d\u003d 0 p-\u003estate values through.\n\nFix this by restoring the original \u0027!state_filter means all tasks\u0027\nspecial-case i had in the original version. Test-built and test-booted on\ni686, SysRq-T now works as intended.\n\nSigned-off-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": "d354d2f4a6fc1b722c2e464a8b3cfd2f6afb304b", "tree": "f2e31a10732d1d8744b690fbb4dd7da1829f1575", "parents": [ "35f6f753b79705bc4b62da5dcc218d75ffa88370" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sat Apr 07 10:18:33 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sat Apr 07 10:18:33 2007 -0700" }, "message": "sched.c: Remove unused variable \u0027relative\u0027\n\nGetting rid of the p-\u003echildren printout in show_task() left behind an\nunused variable.\n\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "35f6f753b79705bc4b62da5dcc218d75ffa88370", "tree": "fae64e1ebcc00b2768689a3e24f956ce0a431513", "parents": [ "7f30e49ee1c2c1e95ce9d2ccce5221ddb793dd60" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Apr 06 21:18:06 2007 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sat Apr 07 10:06:51 2007 -0700" }, "message": "[PATCH] sched: get rid of p-\u003echildren use in show_task()\n\nthe p-\u003eparent PID printout gives us all the information about the\ntask tree that we need - the eldest_child()/older_sibling()/\nyounger_sibling() printouts are mostly historic and i do not\nremember ever having used those fields. (IMO in fact they confuse\nthe SysRq-T output.) So remove them.\n\nThis code has sentimental value though, those fields and\nprintouts are one of the oldest ones still surviving from\nLinux v0.95\u0027s kernel/sched.c:\n\n if (p-\u003ep_ysptr || p-\u003ep_osptr)\n printk(\" Younger sib\u003d%d, older sib\u003d%d\\n\\r\",\n p-\u003ep_ysptr ? p-\u003ep_ysptr-\u003epid : -1,\n p-\u003ep_osptr ? p-\u003ep_osptr-\u003epid : -1);\n else\n printk(\"\\n\\r\");\n\nwritten 15 years ago, in early 1992.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Linus \u0027snif\u0027 Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "69f7c0a1be84b10a81b6edcce2dbee0cdec26eba", "tree": "a6d4988fda72595ea71ba7e2b4ac11f91fde0159", "parents": [ "759b9775c25f5e69aaea8a75c3914019e2dc5539" ], "author": { "name": "Con Kolivas", "email": "kernel@kolivas.org", "time": "Mon Mar 05 00:30:29 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Mar 05 07:57:51 2007 -0800" }, "message": "[PATCH] sched: remove SMT nice\n\nRemove the SMT-nice feature which idles sibling cpus on SMT cpus to\nfacilitiate nice working properly where cpu power is shared. The idling of\ncpus in the presence of runnable tasks is considered too fragile, easy to\nbreak with outside code, and the complexity of managing this system if an\narchitecture comes along with many logical cores sharing cpu power will be\nunworkable.\n\nRemove the associated per_cpu_gain variable in sched_domains used only by\nthis code.\n\nAlso:\n\n The reason is that with dynticks enabled, this code breaks without yet\n further tweaks so dynticks brought on the rapid demise of this code. So\n either we tweak this code or kill it off entirely. It was Ingo\u0027s preference\n to kill it off. Either way this needs to happen for 2.6.21 since dynticks\n has gone in.\n\nSigned-off-by: Con Kolivas \u003ckernel@kolivas.org\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7355690ead6d61f6344072ae61060f985060da29", "tree": "a8cd9d89ed0a34b6d81399eae0999a0cafa63ed8", "parents": [ "3f555c700b6c90f9ac24bc81a4f509583d906278" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Feb 28 20:13:42 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Mar 01 14:53:38 2007 -0800" }, "message": "[PATCH] sched: fix SMT scheduler bug\n\nThe SMT scheduler incorrectly skips kernel threads even if they are\nrunnable (but they are preempted by a higher-prio user-space task which got\nSMT-delayed by an even higher-priority task running on a sibling CPU).\n\nFix this for now by only doing the SMT-nice optimization if the\nto-be-delayed task is the only runnable task. (This should cover most of\nthe real-life cases anyway.)\n\nThis bug has been in the SMT scheduler since 2.6.17 or so, but has only\nbeen noticed now by the active check in the dynticks code.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Michal Piotrowski \u003cmichal.k.k.piotrowski@gmail.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c1e16aa2792a129d8920e22210ef21eb62a0f80a", "tree": "bb924b7c77760d01aae19bc6caf1d24869b25e41", "parents": [ "ae73fc093a8cae4d92e22ab8b635e3590e80785d" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Feb 28 20:12:19 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Mar 01 14:53:37 2007 -0800" }, "message": "[PATCH] Fix posix-cpu-timer breakage caused by stale p-\u003elast_ran value\n\nProblem description at:\nhttp://bugzilla.kernel.org/show_bug.cgi?id\u003d8048\n\nCommit b18ec80396834497933d77b81ec0918519f4e2a7\n [PATCH] sched: improve migration accuracy\noptimized the scheduler time calculations, but broke posix-cpu-timers.\n\nThe problem is that the p-\u003elast_ran value is not updated after a context\nswitch. So a subsequent call to current_sched_time() calculates with a\nstale p-\u003elast_ran value, i.e. accounts the full time, which the task was\nscheduled away.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "9226d125d94c7e4964dd41cc5e9ca2ff84091d01", "tree": "935d6e80ff843e1d7b54e0fd9386ef2e0d31aa3d", "parents": [ "c119ecce894120790903ef535dac3e105f3d6cde" ], "author": { "name": "Zachary Amsden", "email": "zach@vmware.com", "time": "Tue Feb 13 13:26:21 2007 +0100" }, "committer": { "name": "Andi Kleen", "email": "andi@basil.nowhere.org", "time": "Tue Feb 13 13:26:21 2007 +0100" }, "message": "[PATCH] i386: paravirt CPU hypercall batching mode\n\nThe VMI ROM has a mode where hypercalls can be queued and batched. This turns\nout to be a significant win during context switch, but must be done at a\nspecific point before side effects to CPU state are visible to subsequent\ninstructions. This is similar to the MMU batching hooks already provided.\nThe same hooks could be used by the Xen backend to implement a context switch\nmulticall.\n\nTo explain a bit more about lazy modes in the paravirt patches, basically, the\nidea is that only one of lazy CPU or MMU mode can be active at any given time.\n Lazy MMU mode is similar to this lazy CPU mode, and allows for batching of\nmultiple PTE updates (say, inside a remap loop), but to avoid keeping some\nkind of state machine about when to flush cpu or mmu updates, we just allow\none or the other to be active. Although there is no real reason a more\ncomprehensive scheme could not be implemented, there is also no demonstrated\nneed for this extra complexity.\n\nSigned-off-by: Zachary Amsden \u003czach@vmware.com\u003e\nSigned-off-by: Andi Kleen \u003cak@suse.de\u003e\nCc: Andi Kleen \u003cak@suse.de\u003e\nCc: Jeremy Fitzhardinge \u003cjeremy@xensource.com\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nCc: Chris Wright \u003cchrisw@sous-sol.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\n" }, { "commit": "ff91691bccdb741efb2df0489058a4961fa79598", "tree": "eeef6ce3d48df86a7b2c1178a9ba54210b8b8981", "parents": [ "0a9ac38246b11892ad20a1eb9deb67adf8c0db2f" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Mon Feb 12 00:53:51 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Feb 12 09:48:37 2007 -0800" }, "message": "[PATCH] sched: avoid div in rebalance_tick\n\nAvoid expensive integer divide 3 times per CPU per tick.\n\nA userspace test of this loop went from 26ns, down to 19ns on a G5; and\nfrom 123ns down to 28ns on a P3.\n\n(Also avoid a variable bit shift, as suggested by Alan. The effect\nof this wasn\u0027t noticable on the CPUs I tested with).\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Alan Cox \u003calan@lxorguk.ukuu.org.uk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "72fd4a35a824331d7a0f4168d7576502d95d34b3", "tree": "be27880bc36b7f62e8044a88b8744a35c5317714", "parents": [ "262086cf5b5343c2b81c97b1c606058e921859df" ], "author": { "name": "Robert P. J. Day", "email": "rpjday@mindspring.com", "time": "Sat Feb 10 01:45:59 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Feb 11 10:51:32 2007 -0800" }, "message": "[PATCH] Numerous fixes to kernel-doc info in source files.\n\nA variety of (mostly) innocuous fixes to the embedded kernel-doc content in\nsource files, including:\n\n * make multi-line initial descriptions single line\n * denote some function names, constants and structs as such\n * change erroneous opening \u0027/*\u0027 to \u0027/**\u0027 in a few places\n * reword some text for clarity\n\nSigned-off-by: Robert P. J. Day \u003crpjday@mindspring.com\u003e\nCc: \"Randy.Dunlap\" \u003crdunlap@xenotime.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b035b6de24932ffd4a2b1c6619a2f5711da6920f", "tree": "76f43316bf4788c510a1f271064b67ef8e584035", "parents": [ "5e07e1ccb0c0f25dd748ebe2ef83008c2229bf1c" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@openvz.org", "time": "Sat Feb 10 01:45:10 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Feb 11 10:51:28 2007 -0800" }, "message": "[PATCH] Consolidate default sched_clock()\n\nUse attribute(weak).\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@openvz.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": "e5e5673f828623e58a401862b33173591faaeaff", "tree": "51af4f3295f5104217e90d75af6df881b851b3be", "parents": [ "c71551ad309c46d9d2433a9b688491edbd10c806" ], "author": { "name": "Nathan Lynch", "email": "ntl@pobox.com", "time": "Wed Jan 10 23:15:28 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Jan 11 18:18:20 2007 -0800" }, "message": "[PATCH] sched: tasks cannot run on cpus onlined after boot\n\nCommit 5c1e176781f43bc902a51e5832f789756bff911b (\"sched: force /sbin/init\noff isolated cpus\") sets init\u0027s cpus_allowed to a subset of cpu_online_map\nat boot time, which means that tasks won\u0027t be scheduled on cpus that are\nadded to the system later.\n\nMake init\u0027s cpus_allowed a subset of cpu_possible_map instead. This should\nstill preserve the behavior that Nick\u0027s change intended.\n\nThanks to Giuliano Pochini for reporting this and testing the fix:\n\nhttp://ozlabs.org/pipermail/linuxppc-dev/2006-December/029397.html\n\nSigned-off-by: Nathan Lynch \u003cntl@pobox.com\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "9414232fa0cc28e2f51b8c76d260f2748f7953fc", "tree": "71717c2907f4fe2f50aba355e8cf03f3a2a8b385", "parents": [ "d449db98d5d7d90f29f9f6e091b0e1d996184df1" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Dec 29 16:48:13 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sat Dec 30 10:56:41 2006 -0800" }, "message": "[PATCH] sched: fix cond_resched_softirq() offset\n\nRemove the __resched_legal() check: it is conceptually broken. The biggest\nproblem it had is that it can mask buggy cond_resched() calls. A\ncond_resched() call is only legal if we are not in an atomic context, with\ntwo narrow exceptions:\n\n - if the system is booting\n - a reacquire_kernel_lock() down() done while PREEMPT_ACTIVE is set\n\nBut __resched_legal() hid this and just silently returned whenever\nthese primitives were called from invalid contexts. (Same goes for\ncond_resched_locked() and cond_resched_softirq()).\n\nFurthermore, the __legal_resched(0) call was buggy in that it caused\nunnecessarily long softirq latencies via cond_resched_softirq(). (which is\nonly called from softirq-off sections, hence the code did nothing.)\n\nThe fix is to resurrect the efficiency of the might_sleep checks and to\nonly allow the narrow exceptions.\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": "67af63a6ab4ce064f807bdce614fe0fa2bcea252", "tree": "dc9431e230073f977181ce7d4f697bcbe06d73e6", "parents": [ "132e2bc3ee7181c178314ced49da9944b76411c2" ], "author": { "name": "Tim Chen", "email": "tim.c.chen@linux.intel.com", "time": "Fri Dec 22 01:07:50 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Fri Dec 22 08:55:47 2006 -0800" }, "message": "[PATCH] sched: remove __cpuinitdata anotation to cpu_isolated_map\n\nThe structure cpu_isolated_map is used not only during initialization.\nMulti-core scheduler configuration changes and exclusive cpusets\nuse this during run time. During setting of sched_mc_power_savings\n policy, this structure is accessed to update sched_domains.\n\nSigned-off-by: Tim Chen \u003ctim.c.chen@intel.com\u003e\nAcked-by: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "ba0084048ab785c2cb1d6cc2cccabe642a5b799a", "tree": "402f1d6a726413a734ab05415a8f3277d23310e7", "parents": [ "2aea4fb61609ba7ef82f7dc6fca116bda88816e1" ], "author": { "name": "Mark Fasheh", "email": "mark.fasheh@oracle.com", "time": "Fri Dec 22 01:06:15 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Fri Dec 22 08:55:46 2006 -0800" }, "message": "[PATCH] Conditionally check expected_preempt_count in __resched_legal()\n\nCommit 2d7d253548cffdce80f4e03664686e9ccb1b0ed7 (\"fix cond_resched() fix\")\nintroduced an \u0027expected_preempt_count\u0027 parameter to __resched_legal() to\nfix a bug where it was returning a false negative when called from\ncond_resched_lock() and preemption was enabled.\n\nUnfortunately this broke things for when preemption is disabled.\npreempt_count() will always return zero, thus failing the check against any\nvalue of expected_preempt_count not equal to zero. cond_resched_lock() for\nexample, passes an expected_preempt_count value of 1.\n\nSo fix the fix for the cond_resched() fix by skipping the check of\npreempt_count() against expected_preempt_count when preemption is disabled.\n\nCredit should go to Sunil Mushran for spotting the bug during testing.\n\nSigned-off-by: Mark Fasheh \u003cmark.fasheh@oracle.com\u003e\nAcked-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": "bc947631d1d532c758f8fcbdeb1f7fc2f4c863f8", "tree": "3795bf4735650e4a1af417f7c97f1d7103401308", "parents": [ "136f1e7a8cb7d17ff91706518549697071640ae4" ], "author": { "name": "Peter Williams", "email": "pwil3058@bigpond.net.au", "time": "Tue Dec 19 12:48:50 2006 +1000" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 21 00:11:51 2006 -0800" }, "message": "[PATCH] sched: improve efficiency of sched_fork()\n\nProblem:\n sched_fork() has always called scheduler_tick() in some (unlikely)\n circumstances in order to update the current task in light of those\n circumstances. It has always been the case that the work done by\n scheduler_tick() was more than was required to handle the problem in\n hand but no harm was done except for the waste of a few CPU cycles.\n\n However, the splitting of scheduler_tick() into two procedures in\n 2.6.20-rc1 enables the wasted cycles to be saved as the new procedure\n task_running_tick() does all the work that is required to rectify the\n problem being handled.\n\nSolution:\n Replace the call to scheduler_tick() in sched_fork() with a call to\n task_running_tick().\n\nSigned-off-by: Peter Williams \u003cpwil3058@bigpond.com.au\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "3117df0453828bd045c16244e6f50e5714667a8a", "tree": "4f24e5b4024359dd42c91b84cbc25280f21b7314", "parents": [ "27c3b23226fc649de47e4886ccbf994482f388ba" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Dec 13 00:34:43 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Wed Dec 13 09:05:50 2006 -0800" }, "message": "[PATCH] lockdep: print irq-trace info on asserts\n\nWhen we print an assert due to scheduling-in-atomic bugs, and if lockdep\nis enabled, then the IRQ tracing information of lockdep can be printed\nto pinpoint the code location that disabled interrupts. This saved me\nquite a bit of debugging time in cases where the backtrace did not\nidentify the irq-disabling site well enough.\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": "33859f7f9788da2ac9aa23be4dc8e948112809ca", "tree": "42862c87cf0577580a952e67dfa6b126e91719ac", "parents": [ "62ab616d54371a65f595c199aad1e1755b837d25" ], "author": { "name": "Miguel Ojeda Sandonis", "email": "maxextreme@gmail.com", "time": "Sun Dec 10 02:20:38 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sun Dec 10 09:57:20 2006 -0800" }, "message": "[PATCH] kernel/sched.c: whitespace cleanups\n\n[akpm@osdl.org: additional cleanups]\nSigned-off-by: Miguel Ojeda Sandonis \u003cmaxextreme@gmail.com\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "62ab616d54371a65f595c199aad1e1755b837d25", "tree": "5615868bc04901a48f28ecc3da7cc3de035a5662", "parents": [ "06066714f6016cffcb249f6ab21b7919de1bc859" ], "author": { "name": "Chen, Kenneth W", "email": "kenneth.w.chen@intel.com", "time": "Sun Dec 10 02:20:36 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sun Dec 10 09:55:43 2006 -0800" }, "message": "[PATCH] sched: optimize activate_task for RT task\n\nRT task does not participate in interactiveness priority and thus shouldn\u0027t\nbe bothered with timestamp and p-\u003esleep_type manipulation when task is\nbeing put on run queue. Bypass all of the them with a single if (rt_task)\ntest.\n\nSigned-off-by: Ken Chen \u003ckenneth.w.chen@intel.com\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: \"Siddha, Suresh B\" \u003csuresh.b.siddha@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "06066714f6016cffcb249f6ab21b7919de1bc859", "tree": "ef6848c94a8cf0af47bdf8534aa49b507dfc5952", "parents": [ "783609c6cb4eaa23f2ac5c968a44483584ec133f" ], "author": { "name": "Chen, Kenneth W", "email": "kenneth.w.chen@intel.com", "time": "Sun Dec 10 02:20:35 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sun Dec 10 09:55:43 2006 -0800" }, "message": "[PATCH] sched: remove lb_stopbalance counter\n\nRemove scheduler stats lb_stopbalance counter. This counter can be\ncalculated by: lb_balanced - lb_nobusyg - lb_nobusyq. There is no need to\ncreate gazillion counters while we can derive the value.\n\nSigned-off-by: Ken Chen \u003ckenneth.w.chen@intel.com\u003e\nSigned-off-by: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nAcked-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": "783609c6cb4eaa23f2ac5c968a44483584ec133f", "tree": "678704bab2c69f5115ad84452e931adf4c11f3f4", "parents": [ "b18ec80396834497933d77b81ec0918519f4e2a7" ], "author": { "name": "Siddha, Suresh B", "email": "suresh.b.siddha@intel.com", "time": "Sun Dec 10 02:20:33 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sun Dec 10 09:55:43 2006 -0800" }, "message": "[PATCH] sched: decrease number of load balances\n\nCurrently at a particular domain, each cpu in the sched group will do a\nload balance at the frequency of balance_interval. More the cores and\nthreads, more the cpus will be in each sched group at SMP and NUMA domain.\nAnd we endup spending quite a bit of time doing load balancing in those\ndomains.\n\nFix this by making only one cpu(first idle cpu or first cpu in the group if\nall the cpus are busy) in the sched group do the load balance at that\nparticular sched domain and this load will slowly percolate down to the\nother cpus with in that group(when they do load balancing at lower\ndomains).\n\nSigned-off-by: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nCc: Christoph Lameter \u003cclameter@engr.sgi.com\u003e\nCc: 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": "b18ec80396834497933d77b81ec0918519f4e2a7", "tree": "659422f11d4ed64725e321105f0465d27bb60d3d", "parents": [ "08c183f31bdbb709f177f6d3110d5f288ea33933" ], "author": { "name": "Mike Galbraith", "email": "efault@gmx.de", "time": "Sun Dec 10 02:20:31 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sun Dec 10 09:55:43 2006 -0800" }, "message": "[PATCH] sched: improve migration accuracy\n\nCo-opt rq-\u003etimestamp_last_tick to maintain a cache_hot_time evaluation\nreference timestamp at both tick and sched times to prevent said reference,\nformerly rq-\u003etimestamp_last_tick, from being behind task-\u003elast_ran at\nevaluation time, and to move said reference closer to current time on the\nremote processor, intent being to improve cache hot evaluation and\ntimestamp adjustment accuracy for task migration.\n\nFix minor sched_time double accounting error which occurs when a task\npassing through schedule() does not schedule off, and takes the next timer\ntick.\n\n[kenneth.w.chen@intel.com: cleanup]\nSigned-off-by: Mike Galbraith \u003cefault@gmx.de\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nAcked-by: Ken Chen \u003ckenneth.w.chen@intel.com\u003e\nCc: Don Mullis \u003cdwm@meer.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "08c183f31bdbb709f177f6d3110d5f288ea33933", "tree": "be7b84c07f3b0bf29473bad2b7b788fa189f948e", "parents": [ "1bd77f2da58e9cdd1f159217887343dadd9af417" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun Dec 10 02:20:29 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sun Dec 10 09:55:43 2006 -0800" }, "message": "[PATCH] sched: add option to serialize load balancing\n\nLarge sched domains can be very expensive to scan. Add an option SD_SERIALIZE\nto the sched domain flags. If that flag is set then we make sure that no\nother such domain is being balanced.\n\n[akpm@osdl.org: build fix]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Peter Williams \u003cpwil3058@bigpond.net.au\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: \"Siddha, Suresh B\" \u003csuresh.b.siddha@intel.com\u003e\nCc: \"Chen, Kenneth W\" \u003ckenneth.w.chen@intel.com\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "1bd77f2da58e9cdd1f159217887343dadd9af417", "tree": "91104dab07ea6bb7a7fff9da16ac2ba41bba1686", "parents": [ "c9819f4593e8d052b41a89f47140f5c5e7e30582" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun Dec 10 02:20:27 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sun Dec 10 09:55:43 2006 -0800" }, "message": "[PATCH] sched: call tasklet less frequently\n\nTrigger softirq less frequently\n\nWe trigger the softirq before this patch using offset of sd-\u003einterval.\nHowever, if the queue is busy then it is sufficient to schedule the softirq\nwith sd-\u003einterval * busy_factor.\n\nSo we modify the calculation of the next time to balance by taking\nthe interval added to last_balance again. This is only the\nright value if the idle/busy situation continues as is.\n\nThere are two potential trouble spots:\n- If the queue was idle and now gets busy then we call rebalance\n early. However, that is not a problem because we will then use\n the longer interval for the next period.\n\n- If the queue was busy and becomes idle then we potentially\n wait too long before rebalancing. However, when the task\n goes idle then idle_balance is called. We add another calculation\n of the next balance time based on sd-\u003einterval in idle_balance\n so that we will rebalance soon.\n\nV2-\u003eV3:\n- Calculate rebalance time based on current jiffies and not\n based on the jiffies at the last time we load balanced.\n We no longer rely on staggering and therefore we can\n affort to do this now.\n\nV3-\u003eV4:\n- Use functions to do jiffy comparisons.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Peter Williams \u003cpwil3058@bigpond.net.au\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: \"Siddha, Suresh B\" \u003csuresh.b.siddha@intel.com\u003e\nCc: \"Chen, Kenneth W\" \u003ckenneth.w.chen@intel.com\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "c9819f4593e8d052b41a89f47140f5c5e7e30582", "tree": "85da690ecd1e14506336009281e5c369d8457325", "parents": [ "e418e1c2bf1a253916b569370653414eb28597b6" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun Dec 10 02:20:25 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sun Dec 10 09:55:42 2006 -0800" }, "message": "[PATCH] sched: use softirq for load balancing\n\nCall rebalance_tick (renamed to run_rebalance_domains) from a newly introduced\nsoftirq.\n\nWe calculate the earliest time for each layer of sched domains to be rescanned\n(this is the rescan time for idle) and use the earliest of those to schedule\nthe softirq via a new field \"next_balance\" added to struct rq.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Peter Williams \u003cpwil3058@bigpond.net.au\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: \"Siddha, Suresh B\" \u003csuresh.b.siddha@intel.com\u003e\nCc: \"Chen, Kenneth W\" \u003ckenneth.w.chen@intel.com\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "e418e1c2bf1a253916b569370653414eb28597b6", "tree": "cecaba4e3ce408bd4eeaff33abec2d73d99dba9c", "parents": [ "7835b98bc6de2ca10afa45572d272304b000b048" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun Dec 10 02:20:23 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sun Dec 10 09:55:42 2006 -0800" }, "message": "[PATCH] sched: move idle status calculation into rebalance_tick()\n\nPerform the idle state determination in rebalance_tick.\n\nIf we separate balancing from sched_tick then we also need to determine the\nidle state in rebalance_tick.\n\nV2-\u003eV3\n\tRemove useless idlle !\u003d 0 check. Checking nr_running seems\n\tto be sufficient. Thanks Suresh.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Peter Williams \u003cpwil3058@bigpond.net.au\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: \"Siddha, Suresh B\" \u003csuresh.b.siddha@intel.com\u003e\nCc: \"Chen, Kenneth W\" \u003ckenneth.w.chen@intel.com\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "7835b98bc6de2ca10afa45572d272304b000b048", "tree": "6c029f271821b00d18f5f318526b80511b409838", "parents": [ "fe2eea3fafb3df2f5b8a55a48bcbb0d23b3b5618" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun Dec 10 02:20:22 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sun Dec 10 09:55:42 2006 -0800" }, "message": "[PATCH] sched: extract load calculation from rebalance_tick\n\nA load calculation is always done in rebalance_tick() in addition to the real\nload balancing activities that only take place when certain jiffie counts have\nbeen reached. Move that processing into a separate function and call it\ndirectly from scheduler_tick().\n\nAlso extract the time slice handling from scheduler_tick and put it into a\nseparate function. Then we can clean up scheduler_tick significantly. It\nwill no longer have any gotos.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Peter Williams \u003cpwil3058@bigpond.net.au\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: \"Siddha, Suresh B\" \u003csuresh.b.siddha@intel.com\u003e\nCc: \"Chen, Kenneth W\" \u003ckenneth.w.chen@intel.com\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "fe2eea3fafb3df2f5b8a55a48bcbb0d23b3b5618", "tree": "5376e761d21d9164985f27e8836ec2b002dad8a1", "parents": [ "4211a9a2e94a34df8c02bc39b7ec10678ad5c2ab" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun Dec 10 02:20:21 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sun Dec 10 09:55:42 2006 -0800" }, "message": "[PATCH] sched: disable interrupts for locking in load_balance()\n\nInterrupts must be disabled for request queue locks if we want to run\nload_balance() with interrupts enabled.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Peter Williams \u003cpwil3058@bigpond.net.au\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: \"Siddha, Suresh B\" \u003csuresh.b.siddha@intel.com\u003e\nCc: \"Chen, Kenneth W\" \u003ckenneth.w.chen@intel.com\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "4211a9a2e94a34df8c02bc39b7ec10678ad5c2ab", "tree": "006f3678fbf181cfd172f9dc5cb9077c9efc4165", "parents": [ "571f6d2fb0b1c04798df783db2ba85e96bcce43d" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun Dec 10 02:20:19 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sun Dec 10 09:55:42 2006 -0800" }, "message": "[PATCH] sched: remove staggering of load balancing\n\nTimer interrupts already are staggered. We do not need an additional layer of\ntime staggering for short load balancing actions that take a reasonably small\nportion of the time slice.\n\nFor load balancing on large sched_domains we will add a serialization later\nthat avoids concurrent load balance operations and thus has the same effect as\nload staggering.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Peter Williams \u003cpwil3058@bigpond.net.au\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: \"Siddha, Suresh B\" \u003csuresh.b.siddha@intel.com\u003e\nCc: \"Chen, Kenneth W\" \u003ckenneth.w.chen@intel.com\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "571f6d2fb0b1c04798df783db2ba85e96bcce43d", "tree": "09e90a5f4976ddfa35e93e90372413e2ef87060a", "parents": [ "ac7d550499e225efb51a53d0b00667f26b93bdff" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun Dec 10 02:20:13 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sun Dec 10 09:55:42 2006 -0800" }, "message": "[PATCH] sched: avoid taking rq lock in wake_priority_sleeper\n\nAvoid taking the request queue lock in wake_priority_sleeper if there are no\nrunning processes.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Peter Williams \u003cpwil3058@bigpond.net.au\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: \"Siddha, Suresh B\" \u003csuresh.b.siddha@intel.com\u003e\nCc: \"Chen, Kenneth W\" \u003ckenneth.w.chen@intel.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nAcked-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": "054b9108e01ef27e2e6b32b4226abb6024626f06", "tree": "be5c7a42f26f76406da51b888d8ae8e020ba7821", "parents": [ "6711cab43ed5e60bf51e3dbbce6395e87d4e9805" ], "author": { "name": "Kirill Korotaev", "email": "dev@openvz.org", "time": "Sun Dec 10 02:20:11 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sun Dec 10 09:55:42 2006 -0800" }, "message": "[PATCH] move_task_off_dead_cpu() should be called with disabled ints\n\nmove_task_off_dead_cpu() requires interrupts to be disabled, while\nmigrate_dead() calls it with enabled interrupts. Added appropriate\ncomments to functions and added BUG_ON(!irqs_disabled()) into\ndouble_rq_lock() and double_lock_balance() which are the origin sources of\nsuch bugs.\n\nSigned-off-by: Kirill Korotaev \u003cdev@openvz.org\u003e\nAcked-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": "6711cab43ed5e60bf51e3dbbce6395e87d4e9805", "tree": "de7c1b25add18dbfccf5fbccdaccca7a0a05bd33", "parents": [ "cc2a73b5caf065f8612fcb5df5bd2f5e25881d99" ], "author": { "name": "Siddha, Suresh B", "email": "suresh.b.siddha@intel.com", "time": "Sun Dec 10 02:20:07 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sun Dec 10 09:55:42 2006 -0800" }, "message": "[PATCH] ched domain: move sched group allocations to percpu area\n\nMove the sched group allocations to percpu area. This will minimize cross\nnode memory references and also cleans up the sched groups allocation for\nallnodes sched domain.\n\nSigned-off-by: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "cc2a73b5caf065f8612fcb5df5bd2f5e25881d99", "tree": "281f9957286872a7587da1004a50665ee07a7a97", "parents": [ "596afa41b21a414e523936b27100456f0f85e411" ], "author": { "name": "Robert P. J. Day", "email": "rpjday@mindspring.com", "time": "Sun Dec 10 02:20:00 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sun Dec 10 09:55:42 2006 -0800" }, "message": "[PATCH] sched.c: correct comment for this_rq_lock()\n\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Robert P. J. Day \u003crpjday@mindspring.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "15ad7cdcfd76450d4beebc789ec646664238184d", "tree": "279d05a76ae0906c23ee2de8c5684d95d9886ad3", "parents": [ "4a08a9f68168e547c2baf100020e9b96cae5fbd1" ], "author": { "name": "Helge Deller", "email": "deller@gmx.de", "time": "Wed Dec 06 20:40:36 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:46 2006 -0800" }, "message": "[PATCH] struct seq_operations and struct file_operations constification\n\n - move some file_operations structs into the .rodata section\n\n - move static strings from policy_types[] array into the .rodata section\n\n - fix generic seq_operations usages, so that those structs may be defined\n as \"const\" as well\n\n[akpm@osdl.org: couple of fixes]\nSigned-off-by: Helge Deller \u003cdeller@gmx.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "301827acbe49d0ba7ec9770803970893ac9ded97", "tree": "af2440b2361b190dd794479953a52d20bea50f89", "parents": [ "bd9b0bac6f601655044fc35978e26231dffee03e" ], "author": { "name": "Chris Caputo", "email": "ccaputo@alt.net", "time": "Wed Dec 06 20:39:11 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:42 2006 -0800" }, "message": "[PATCH] sched: correct output of show_state()\n\nAt present show_state prints a header the does not match the output of\nshow_task, as follows:\n\n-\n sibling\n task PC pid father child younger older\ninit S 00000000 0 1 0 2 (NOTLB)\n-\n\nThis patch corrects the output of show_state so that the header is\naligned with the data, ala:\n\n-\n free sibling\n task PC stack pid father child younger older\ninit S 00000000 0 1 0 2 (NOTLB)\n-\n\nSigned-off-by: Chris Caputo \u003cccaputo@alt.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "02316067852187b8bec781bec07410e91af79627", "tree": "856e3f4610c91a6548bf3bf5c70ecbc0b28a4145", "parents": [ "a38a44c1a93078fc5fadc4ac2df8dea4697069e2" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Dec 06 20:38:17 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:39 2006 -0800" }, "message": "[PATCH] hotplug CPU: clean up hotcpu_notifier() use\n\nThere was lots of #ifdef noise in the kernel due to hotcpu_notifier(fn,\nprio) not correctly marking \u0027fn\u0027 as used in the !HOTPLUG_CPU case, and thus\ngenerating compiler warnings of unused symbols, hence forcing people to add\n#ifdefs.\n\nthe compiler can skip truly unused functions just fine:\n\n text data bss dec hex filename\n 1624412 728710 3674856 6027978 5bfaca vmlinux.before\n 1624412 728710 3674856 6027978 5bfaca vmlinux.after\n\n[akpm@osdl.org: topology.c fix]\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": "ece8a684c75df215320b4155944979e3f78c5c93", "tree": "2a65e786dd70ab368c12836a39c36070c0e4974f", "parents": [ "70888bd5b70579e278d5ef1b7e1ec6a420d38b9e" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Dec 06 20:37:24 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:36 2006 -0800" }, "message": "[PATCH] sleep profiling\n\nImplement prof\u003dsleep profiling. TASK_UNINTERRUPTIBLE sleeps will be taken\nas a profile hit, and every millisecond spent sleeping causes a profile-hit\nfor the call site that initiated the sleep.\n\nSample readprofile output on i386:\n\n 306 ps2_sendbyte 1.3973\n 432 call_usermodehelper_keys 1.9548\n 484 ps2_command 0.6453\n 790 __driver_attach 4.7879\n 1593 msleep 44.2500\n 3976 sync_buffer 64.1290\n 4076 do_lookup 12.4648\n 8587 sync_page 122.6714\n 20820 total 0.0067\n\n(NOTE: architectures need to check whether get_wchan() can be called from\ndeep within the wakeup path.)\n\nakpm: we need to mark more functions __sched. lock_sock(), msleep(), others..\n\nakpm: the contention in do_lookup() is a surprise. Presumably doing disk\nreads for directory contents while holding i_mutex.\n\n[akpm@osdl.org: various fixes]\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": "a4c410f00f7ca4bd448b0d63f6f882fd244dc991", "tree": "9384e64eda2ee317ceb7b02d1752459ce9fcb8c6", "parents": [ "8bb0269160df2a60764013994d0bc5165406cf4a" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Wed Dec 06 20:37:21 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:36 2006 -0800" }, "message": "[PATCH] lockdep: print current locks on in_atomic warnings\n\nAdd debug_show_held_locks(current) to __might_sleep() and schedule(); this\nmakes finding the offending lock leak easier.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-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": "e59e2ae2c29700117a54e85c106017c24837119f", "tree": "d746e90d2d79fa8458d021d3572bc55ebdc3aca3", "parents": [ "875d95ec9eb69ffb334116fb44d04d9a64dcbfbb" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Dec 06 20:35:59 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:32 2006 -0800" }, "message": "[PATCH] SysRq-X: show blocked tasks\n\nAdd SysRq-X support: show blocked (TASK_UNINTERRUPTIBLE) tasks only.\n\nUseful for debugging IO stalls.\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": "7dfb71030f7636a0d65200158113c37764552f93", "tree": "276b812903d377b16d8828e888552fd256f48aab", "parents": [ "8a05aac2631aa0e6494d9dc990f8c68ed8b8fde7" ], "author": { "name": "Nigel Cunningham", "email": "ncunningham@linuxmail.org", "time": "Wed Dec 06 20:34:23 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:27 2006 -0800" }, "message": "[PATCH] Add include/linux/freezer.h and move definitions from sched.h\n\nMove process freezing functions from include/linux/sched.h to freezer.h, so\nthat modifications to the freezer or the kernel configuration don\u0027t require\nrecompiling just about everything.\n\n[akpm@osdl.org: fix ueagle driver]\nSigned-off-by: Nigel Cunningham \u003cnigel@suspend2.net\u003e\nCc: \"Rafael J. Wysocki\" \u003crjw@sisk.pl\u003e\nCc: Pavel Machek \u003cpavel@ucw.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "91fcdd4e0314145d7d4fa52dba2f9c2da25346fd", "tree": "a4defe96d7f86a1bc0ba8bdb6df51efcf271d347", "parents": [ "145fc655a1ceabda76cf2ad74f7cf96863c65b65" ], "author": { "name": "Borislav Petkov", "email": "bbpetkov@yahoo.de", "time": "Thu Oct 19 23:28:29 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Oct 20 10:26:37 2006 -0700" }, "message": "[PATCH] readjust comments of task_timeslice for kernel doc\n\nSigned-off-by: Borislav Petkov \u003cpetkov@math.uni-muenster.de\u003e\nAcked-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": "beed33a816204cb402c69266475b6a60a2433ceb", "tree": "4eaa7e5a1ccf2960d1478774cdfcab671384accb", "parents": [ "f33d9bd50478c9a969b65f58feb6b69a3ad478cb" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Wed Oct 11 01:21:52 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Oct 11 11:14:22 2006 -0700" }, "message": "[PATCH] sched: likely profiling\n\nThis likely profiling is pretty fun. I found a few possible problems\nin sched.c.\n\nThis patch may be not measurable, but when I did measure long ago,\nnooping (un)likely cost a couple of % on scheduler heavy benchmarks, so\nit all adds up.\n\nTweak some branch hints:\n\n- the 2nd 64 bits in the bitmask is likely to be populated, because it\n contains the first 28 bits (nearly 3/4) of the normal priorities.\n (ratio of 669669:691 ~\u003d 1000:1).\n\n- it isn\u0027t unlikely that context switching switches to another process. it\n might be very rapidly switching to and from the idle process (ratio of\n 475815:419004 and 471330:423544). Let the branch predictor decide.\n\n- preempt_enable seems to be very often called in a nested preempt_disable\n or with interrupts disabled (ratio of 3567760:87965 ~\u003d 40:1)\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Daniel Walker \u003cdwalker@mvista.com\u003e\nCc: Hua Zhong \u003chzhong@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "ce164428c4cabfd284ca81913415cacd889aac33", "tree": "ae4df00bc80285b03e755d615f41b4f96e5520ba", "parents": [ "0feaece97795c4c775a3c732c045706eda28d0e5" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Tue Oct 03 01:14:11 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Oct 03 08:04:07 2006 -0700" }, "message": "[PATCH] scheduler: NUMA aware placement of sched_group_allnodes\n\nWhen the per cpu sched domains are build then they also need to be placed\non the node where the cpu resides otherwise we will have frequent off node\naccesses which will slow down the system.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nAcked-by: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "0feaece97795c4c775a3c732c045706eda28d0e5", "tree": "49c154f597b934478f145a8b9f032a450908d63e", "parents": [ "89c4710ee9bbbefe6a4d469d9f36266a92c275c5" ], "author": { "name": "Satoru Takeuchi", "email": "takeuchi_satoru@jp.fujitsu.com", "time": "Tue Oct 03 01:14:10 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Oct 03 08:04:07 2006 -0700" }, "message": "[PATCH] sched: fixing wrong comment for find_idlest_cpu()\n\nFixing wrong comment for find_idlest_cpu().\n\nSigned-off-by: Satoru Takeuchi \u003ctakeuchi_satoru@jp.fujitsu.com\u003e\nAcked-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" } ], "next": "89c4710ee9bbbefe6a4d469d9f36266a92c275c5" }