)]}' { "log": [ { "commit": "4b0a84043e0c14088958fddb62f416d050368011", "tree": "cf5df6cef66a178c35e335240a756798caf2c399", "parents": [ "63f7a330014ad29b662638caabd8e96fe945b9ed", "d07387b490b1c43bfcb9f3900faf96f2dafb2630" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jul 16 10:18:29 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jul 16 10:18:29 2009 -0700" }, "message": "Merge branch \u0027sched-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/peterz/linux-2.6-sched\n\n* \u0027sched-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/peterz/linux-2.6-sched:\n sched: Fix bug in SCHED_IDLE interaction with group scheduling\n sched: Fix rt_rq-\u003epushable_tasks initialization in init_rt_rq()\n sched: Reset sched stats on fork()\n sched_rt: Fix overload bug on rt group scheduling\n sched: Documentation/sched-rt-group: Fix style issues \u0026 bump version\n" }, { "commit": "d86ee4809d0329d4aa0d0f2c76c2295a16862799", "tree": "32b3eaf766c1127ef2298c2e48b5441b7cf9b843", "parents": [ "c99e6efe1ba04561e7d93a81f0be07e37427e835" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Fri Jul 10 14:57:57 2009 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jul 10 14:24:05 2009 -0700" }, "message": "sched: optimize cond_resched()\n\nOptimize cond_resched() by removing one conditional.\n\nCurrently cond_resched() checks system_state \u003d\u003d\nSYSTEM_RUNNING in order to avoid scheduling before the\nscheduler is running.\n\nWe can however, as per suggestion of Matt, use\nPREEMPT_ACTIVE to accomplish that very same.\n\nSuggested-by: Matt Mackall \u003cmpm@selenic.com\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Matt Mackall \u003cmpm@selenic.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c20b08e3986c2dbfa6df1e880bf4f7159994d199", "tree": "ea539701a3cf78b8e2f1d2aab2a2ec442d00f690", "parents": [ "7793527b90d9418211f4fe8464cc1dcb1631ea1b" ], "author": { "name": "Fabio Checconi", "email": "fchecconi@gmail.com", "time": "Mon Jun 15 20:56:38 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jul 10 10:43:30 2009 +0200" }, "message": "sched: Fix rt_rq-\u003epushable_tasks initialization in init_rt_rq()\n\ninit_rt_rq() initializes only rq-\u003ert.pushable_tasks, and not the\npushable_tasks field of the passed rt_rq. The plist is not used\nuninitialized since the only pushable_tasks plists used are the\nones of root rt_rqs; anyway reinitializing the list on every group\ncreation corrupts the root plist, losing its previous contents.\n\nSigned-off-by: Fabio Checconi \u003cfabio@gandalf.sssup.it\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: \u003c20090615185638.GK21741@gandalf.sssup.it\u003e\nCC: Gregory Haskins \u003cghaskins@novell.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "7793527b90d9418211f4fe8464cc1dcb1631ea1b", "tree": "a09cdbe3942d9ba22877976737a220f9aaac2a04", "parents": [ "a1ba4d8ba9f06a397e97cbd67a93ee306860b40a" ], "author": { "name": "Lucas De Marchi", "email": "lucas.de.marchi@gmail.com", "time": "Thu Jul 09 13:57:20 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jul 10 10:43:29 2009 +0200" }, "message": "sched: Reset sched stats on fork()\n\nThe sched_stat fields are currently not reset upon fork.\nIngo\u0027s recent commit 6c594c21fcb02c662f11c97be4d7d2b73060a205\ndid reset nr_migrations, but it didn\u0027t reset any of the\nothers.\n\nThis patch resets all sched_stat fields on fork.\n\nSigned-off-by: Lucas De Marchi \u003clucas.de.marchi@gmail.com\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: \u003c193b0f820907090457s7a3662f4gcdecdc22fcae857b@mail.gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "a1ba4d8ba9f06a397e97cbd67a93ee306860b40a", "tree": "f0e0f92a2c0763f8ec162c2b0e2abc389075b207", "parents": [ "d4ec36bac3de39b7e10ec8f42fbdd20d9a9ed753" ], "author": { "name": "Peter Zijlstra", "email": "peterz@infradead.org", "time": "Wed Apr 01 18:40:15 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jul 10 10:43:29 2009 +0200" }, "message": "sched_rt: Fix overload bug on rt group scheduling\n\nFixes an easily triggerable BUG() when setting process affinities.\n\nMake sure to count the number of migratable tasks in the same place:\nthe root rt_rq. Otherwise the number doesn\u0027t make sense and we\u0027ll hit\nthe BUG in set_cpus_allowed_rt().\n\nAlso, make sure we only count tasks, not groups (this is probably\nalready taken care of by the fact that rt_se-\u003enr_cpus_allowed will be 0\nfor groups, but be more explicit)\n\nTested-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCC: stable@kernel.org\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Gregory Haskins \u003cghaskins@novell.com\u003e\nLKML-Reference: \u003c1247067476.9777.57.camel@twins\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "12e24f34cb0d55efd08c18b2112507d4bf498008", "tree": "83b07be17b8ef45f42360a3b9159b3aaae3fbad4", "parents": [ "1eb51c33b21ffa3fceb634d1d6bcd6488c79bc26", "eadc84cc01e04f9f74ec2de0c9355be035c7b396" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jun 20 11:29:32 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jun 20 11:29:32 2009 -0700" }, "message": "Merge branch \u0027perfcounters-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027perfcounters-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (49 commits)\n perfcounter: Handle some IO return values\n perf_counter: Push perf_sample_data through the swcounter code\n perf_counter tools: Define and use our own u64, s64 etc. definitions\n perf_counter: Close race in perf_lock_task_context()\n perf_counter, x86: Improve interactions with fast-gup\n perf_counter: Simplify and fix task migration counting\n perf_counter tools: Add a data file header\n perf_counter: Update userspace callchain sampling uses\n perf_counter: Make callchain samples extensible\n perf report: Filter to parent set by default\n perf_counter tools: Handle lost events\n perf_counter: Add event overlow handling\n fs: Provide empty .set_page_dirty() aop for anon inodes\n perf_counter: tools: Makefile tweaks for 64-bit powerpc\n perf_counter: powerpc: Add processor back-end for MPC7450 family\n perf_counter: powerpc: Make powerpc perf_counter code safe for 32-bit kernels\n perf_counter: powerpc: Change how processor-specific back-ends get selected\n perf_counter: powerpc: Use unsigned long for register and constraint values\n perf_counter: powerpc: Enable use of software counters on 32-bit powerpc\n perf_counter tools: Add and use isprint()\n ...\n" }, { "commit": "1eb51c33b21ffa3fceb634d1d6bcd6488c79bc26", "tree": "5360e0b439b35a97313ea8250209e7dacff8b9a6", "parents": [ "b0b7065b64fe517b4a50915a1555e8ee98890d64", "3104bf03a923c72043a9c5009d9cd56724304916" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jun 20 10:57:40 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jun 20 10:57:40 2009 -0700" }, "message": "Merge branch \u0027sched-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027sched-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n sched: Fix out of scope variable access in sched_slice()\n sched: Hide runqueues from direct refer at source code level\n sched: Remove unneeded __ref tag\n sched, x86: Fix cpufreq + sched_clock() TSC scaling\n" }, { "commit": "e5289d4a181fb6c0b7a7607649af2ffdc491335c", "tree": "6c9e9ab46a29c538e4c505d3d3cd135265db08a2", "parents": [ "f5970550d5ccf90453cbd7d260370ea99d1f6513" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Fri Jun 19 13:22:51 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jun 19 13:43:12 2009 +0200" }, "message": "perf_counter: Simplify and fix task migration counting\n\nThe task migrations counter was causing rare and hard to decypher\nmemory corruptions under load. After a day of debugging and bisection\nwe found that the problem was introduced with:\n\n 3f731ca: perf_counter: Fix cpu migration counter\n\nTurning them off fixes the crashes. Incidentally, the whole\nperf_counter_task_migration() logic can be done simpler as well,\nby injecting a proper sw-counter event.\n\nThis cleanup also fixed the crashes. The precise failure mode is\nnot completely clear yet, but we are clearly not unhappy about\nhaving a fix ;-)\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Mike Galbraith \u003cefault@gmx.de\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Corey Ashford \u003ccjashfor@linux.vnet.ibm.com\u003e\nCc: Marcelo Tosatti \u003cmtosatti@redhat.com\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nLKML-Reference: \u003cnew-submission\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "371cbb387e33651b4c1326457116568ff01ac422", "tree": "4678d02d44fc9764f316e5d84e5d307cc14a0923", "parents": [ "63706172f332fd3f6e7458ebfb35fa6de9c21dc5" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Wed Jun 17 16:27:45 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jun 18 13:03:54 2009 -0700" }, "message": "kthreads: simplify migration_thread() exit path\n\nNow that kthread_stop() can be used even if the task has already exited,\nwe can kill the \"wait_to_die:\" loop in migration_thread(). But we must\npin rq-\u003emigration_thread after creation.\n\nActually, I don\u0027t think CPU_UP_CANCELED or CPU_DEAD should wait for\n-\u003emigration_thread exit. Perhaps we can simplify this code a bit more.\nmigration_call() can set -\u003eshould_stop and forget about this thread. But\nwe need a new helper in kthred.c for that.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nCc: Vitaliy Gusev \u003cvgusev@openvz.org\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "fd5e1b5dbaa8b4aacc0e251d74182eda37062194", "tree": "cba4e780784649fe9c9535b8d5ac1617f52e1a15", "parents": [ "84599f8a59e77699f18f06948cea171a349a3f0f" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Mon Jun 15 13:34:19 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jun 17 16:08:04 2009 +0200" }, "message": "sched: Remove unneeded __ref tag\n\nThose two functions no longer call alloc_bootmmem_cpumask_var(),\nso no need to tag them with __init_refok.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nAcked-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nLKML-Reference: \u003c4A35DD5B.9050106@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "19035e5b5d1e3127b4925d86f6a77964f91f2c3c", "tree": "c9e7e9073970176a5b0970da715cb6430c3c9069", "parents": [ "f9db6e095115f9411b9647bdb9d81fe11f3d8b54", "eea08f32adb3f97553d49a4f79a119833036000a" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jun 15 10:06:19 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jun 15 10:06:19 2009 -0700" }, "message": "Merge branch \u0027timers-for-linus-migration\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027timers-for-linus-migration\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n timers: Logic to move non pinned timers\n timers: /proc/sys sysctl hook to enable timer migration\n timers: Identifying the existing pinned timers\n timers: Framework for identifying pinned timers\n timers: allow deferrable timers for intervals tv2-tv5 to be deferred\n\nFix up conflicts in kernel/sched.c and kernel/timer.c manually\n" }, { "commit": "b43e352139f51216a8c56b0bd5fc3d4e05c65619", "tree": "f7766a7d5dc21e424bc914c99e03a4816a35d78a", "parents": [ "f7027c6387d0c3acf569845165ec7947e2083c82" ], "author": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Fri Jun 12 22:27:00 2009 -0600" }, "committer": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Fri Jun 12 22:27:01 2009 +0930" }, "message": "sched: export kick_process\n\nlguest needs kick_process: wake_up_process() does nothing if a process\nis running, which isn\u0027t sufficient (we need it in the kernel).\n\nAnd lguest support is usually modular.\n\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "8a1ca8cedd108c8e76a6ab34079d0bbb4f244799", "tree": "636c715524f1718599209cc289908ea44b6cb859", "parents": [ "b640f042faa2a2fad6464f259a8afec06e2f6386", "940010c5a314a7bd9b498593bc6ba1718ac5aec5" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jun 11 14:01:07 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jun 11 14:01:07 2009 -0700" }, "message": "Merge branch \u0027perfcounters-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027perfcounters-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (574 commits)\n perf_counter: Turn off by default\n perf_counter: Add counter-\u003eid to the throttle event\n perf_counter: Better align code\n perf_counter: Rename L2 to LL cache\n perf_counter: Standardize event names\n perf_counter: Rename enums\n perf_counter tools: Clean up u64 usage\n perf_counter: Rename perf_counter_limit sysctl\n perf_counter: More paranoia settings\n perf_counter: powerpc: Implement generalized cache events for POWER processors\n perf_counters: powerpc: Add support for POWER7 processors\n perf_counter: Accurate period data\n perf_counter: Introduce struct for sample data\n perf_counter tools: Normalize data using per sample period data\n perf_counter: Annotate exit ctx recursion\n perf_counter tools: Propagate signals properly\n perf_counter tools: Small frequency related fixes\n perf_counter: More aggressive frequency adjustment\n perf_counter/x86: Fix the model number of Intel Core2 processors\n perf_counter, x86: Correct some event and umask values for Intel processors\n ...\n" }, { "commit": "0fb530291621c8b8a1b16abeeab05d9262489f71", "tree": "4b5fbb1781b279caf9cd20fb1ef5d04028548f43", "parents": [ "4bdddf8ff9bbb8aa7b4d7847586202bd25842c90" ], "author": { "name": "Pekka Enberg", "email": "penberg@cs.helsinki.fi", "time": "Thu Jun 11 08:41:22 2009 +0300" }, "committer": { "name": "Pekka Enberg", "email": "penberg@cs.helsinki.fi", "time": "Thu Jun 11 19:27:12 2009 +0300" }, "message": "sched: use slab in cpupri_init()\n\nLets not use the bootmem allocator in cpupri_init() as slab is already up when\nit is run.\n\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nCc: Yinghai Lu \u003cyinghai@kernel.org\u003e\nSigned-off-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\n" }, { "commit": "4bdddf8ff9bbb8aa7b4d7847586202bd25842c90", "tree": "b1ba7c6fcb1d6cd4d7260cbcea459ad75ba0b095", "parents": [ "959982fee4e635c61780e989c3e34267143fcc02" ], "author": { "name": "Pekka Enberg", "email": "penberg@cs.helsinki.fi", "time": "Thu Jun 11 08:35:27 2009 +0300" }, "committer": { "name": "Pekka Enberg", "email": "penberg@cs.helsinki.fi", "time": "Thu Jun 11 19:27:11 2009 +0300" }, "message": "sched: use alloc_cpumask_var() instead of alloc_bootmem_cpumask_var()\n\nSlab is initialized when sched_init() runs now so lets use alloc_cpumask_var().\n\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nCc: Yinghai Lu \u003cyinghai@kernel.org\u003e\nSigned-off-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\n" }, { "commit": "36b7b6d465489c4754c4fd66fcec6086eba87896", "tree": "b24eb922eea26181157c7e99047933d3df08ecfb", "parents": [ "444f478f65c7ca4606f9965b31feed13fe2bc9fa" ], "author": { "name": "Pekka Enberg", "email": "penberg@cs.helsinki.fi", "time": "Wed Jun 10 23:42:36 2009 +0300" }, "committer": { "name": "Pekka Enberg", "email": "penberg@cs.helsinki.fi", "time": "Thu Jun 11 19:27:04 2009 +0300" }, "message": "sched: use kzalloc() instead of the bootmem allocator\n\nNow that kmem_cache_init() happens before sched_init(), we should use kzalloc()\nand not the bootmem allocator.\n\nSigned-off-by: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\n" }, { "commit": "940010c5a314a7bd9b498593bc6ba1718ac5aec5", "tree": "d141e08ced08c40c6a8e3ab2cdecde5ff14e560f", "parents": [ "8dc8e5e8bc0ce00b0f656bf972f67cd8a72759e5", "991ec02cdca33b03a132a0cacfe6f0aa0be9aa8d" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Jun 11 17:55:42 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Jun 11 17:55:42 2009 +0200" }, "message": "Merge branch \u0027linus\u0027 into perfcounters/core\n\nConflicts:\n\tarch/x86/kernel/irqinit.c\n\tarch/x86/kernel/irqinit_64.c\n\tarch/x86/kernel/traps.c\n\tarch/x86/mm/fault.c\n\tinclude/linux/sched.h\n\tkernel/exit.c\n" }, { "commit": "862366118026a358882eefc70238dbcc3db37aac", "tree": "4eb62bc10327a5afac064a95a091ea05ecd2acc1", "parents": [ "57eee9ae7bbcfb692dc96c739a5184adb6349733", "511b01bdf64ad8a38414096eab283c7784aebfc4" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Jun 10 19:53:40 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Jun 10 19:53:40 2009 -0700" }, "message": "Merge branch \u0027tracing-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027tracing-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (244 commits)\n Revert \"x86, bts: reenable ptrace branch trace support\"\n tracing: do not translate event helper macros in print format\n ftrace/documentation: fix typo in function grapher name\n tracing/events: convert block trace points to TRACE_EVENT(), fix !CONFIG_BLOCK\n tracing: add protection around module events unload\n tracing: add trace_seq_vprint interface\n tracing: fix the block trace points print size\n tracing/events: convert block trace points to TRACE_EVENT()\n ring-buffer: fix ret in rb_add_time_stamp\n ring-buffer: pass in lockdep class key for reader_lock\n tracing: add annotation to what type of stack trace is recorded\n tracing: fix multiple use of __print_flags and __print_symbolic\n tracing/events: fix output format of user stack\n tracing/events: fix output format of kernel stack\n tracing/trace_stack: fix the number of entries in the header\n ring-buffer: discard timestamps that are at the start of the buffer\n ring-buffer: try to discard unneeded timestamps\n ring-buffer: fix bug in ring_buffer_discard_commit\n ftrace: do not profile functions when disabled\n tracing: make trace pipe recognize latency format flag\n ...\n" }, { "commit": "be15f9d63b97da0065187696962331de6cd9de9e", "tree": "cc85c72e92afccfdcdfa851c4694a93f4ea22b84", "parents": [ "595dc54a1da91408a52c4b962f3deeb1109aaca0", "a789ed5fb6d0256c4177c2cc27e06520ddbe4d4c" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Jun 10 16:16:27 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Jun 10 16:16:27 2009 -0700" }, "message": "Merge branch \u0027x86-xen-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027x86-xen-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (42 commits)\n xen: cache cr0 value to avoid trap\u0027n\u0027emulate for read_cr0\n xen/x86-64: clean up warnings about IST-using traps\n xen/x86-64: fix breakpoints and hardware watchpoints\n xen: reserve Xen start_info rather than e820 reserving\n xen: add FIX_TEXT_POKE to fixmap\n lguest: update lazy mmu changes to match lguest\u0027s use of kvm hypercalls\n xen: honour VCPU availability on boot\n xen: add \"capabilities\" file\n xen: drop kexec bits from /sys/hypervisor since kexec isn\u0027t implemented yet\n xen/sys/hypervisor: change writable_pt to features\n xen: add /sys/hypervisor support\n xen/xenbus: export xenbus_dev_changed\n xen: use device model for suspending xenbus devices\n xen: remove suspend_cancel hook\n xen/dev-evtchn: clean up locking in evtchn\n xen: export ioctl headers to userspace\n xen: add /dev/xen/evtchn driver\n xen: add irq_from_evtchn\n xen: clean up gate trap/interrupt constants\n xen: set _PAGE_NX in __supported_pte_mask before pagetable construction\n ...\n" }, { "commit": "082b63ae45e7d14e15995dedd782ec7344596fb2", "tree": "b5e52149ecd6ac4a8951abbcf4bef5101bc60479", "parents": [ "99e97b860e14c64760855198e91d1166697131a7", "50fa610a3b6ba7cf91d7a92229177dfaff2b81a1" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Jun 10 15:48:53 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Jun 10 15:48:53 2009 -0700" }, "message": "Merge branch \u0027sched-docs-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027sched-docs-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n sched: Document memory barriers implied by sleep/wake-up primitives\n" }, { "commit": "3f731ca60afc29f5bcdb5fd2a04391466313a9ac", "tree": "ca9953e902e5043f62f56db31a0e990eed755e78", "parents": [ "f38b082081bf69a06fffb8b32a175999e2320c5b" ], "author": { "name": "Paul Mackerras", "email": "paulus@samba.org", "time": "Mon Jun 01 17:52:30 2009 +1000" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jun 02 13:10:54 2009 +0200" }, "message": "perf_counter: Fix cpu migration counter\n\nThis fixes the cpu migration software counter to count\ncorrectly even when contexts get swapped from one task to\nanother. Previously the cpu migration counts reported by perf\nstat were bogus, ranging from negative to several thousand for\na single \"lat_ctx 2 8 32\" run. With this patch the cpu\nmigration count reported for \"lat_ctx 2 8 32\" is almost always\nbetween 35 and 44.\n\nThis fixes the problem by adding a call into the perf_counter\ncode from set_task_cpu when tasks are migrated. This enables\nus to use the generic swcounter code (with some modifications)\nfor the cpu migration counter.\n\nThis modifies the swcounter code to allow a NULL regs pointer\nto be passed in to perf_swcounter_ctx_event() etc. The cpu\nmigration counter does this because there isn\u0027t necessarily a\npt_regs struct for the task available. In this case, the\ncounter will not have interrupt capability - but the migration\ncounter didn\u0027t have interrupt capability before, so this is no\nloss.\n\nSigned-off-by: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Mike Galbraith \u003cefault@gmx.de\u003e\nCc: Corey Ashford \u003ccjashfor@linux.vnet.ibm.com\u003e\nCc: Marcelo Tosatti \u003cmtosatti@redhat.com\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nCc: John Kacur \u003cjkacur@redhat.com\u003e\nLKML-Reference: \u003c18979.35006.819769.416327@cargo.ozlabs.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "f38b082081bf69a06fffb8b32a175999e2320c5b", "tree": "08a26857c77b11a97871b3e1e06ec588033f7cf3", "parents": [ "10a2825514a988225ac2e336c7a9502c4ca57c39" ], "author": { "name": "Paul Mackerras", "email": "paulus@samba.org", "time": "Tue Jun 02 21:05:16 2009 +1000" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jun 02 13:10:54 2009 +0200" }, "message": "perf_counter: Initialize per-cpu context earlier on cpu up\n\nThis arranges for perf_counter\u0027s notifier for cpu hotplug\noperations to be called earlier than the migration notifier in\nsched.c by increasing its priority to 20, compared to the 10\nfor the migration notifier. The reason for doing this is that\na subsequent commit to convert the cpu migration counter to use\nthe generic swcounter infrastructure will add a call into the\nperf_counter subsystem when tasks get migrated. Therefore the\nperf_counter subsystem needs a chance to initialize its per-cpu\ndata for the new cpu before it can get called from the\nmigration code.\n\nThis also adds a comment to the migration notifier noting that\nits priority needs to be lower than that of the perf_counter\nnotifier.\n\nSigned-off-by: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: \u003c18981.1900.792795.836858@cargo.ozlabs.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "e220d2dcb944c5c488b6855d15ec66d76900514f", "tree": "bbaa8ead4276d59d6d73d49a28fd6e1e1ed3259a", "parents": [ "c6eb13847ba081552d2af644219bddeff7110caf" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Sat May 23 18:28:55 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat May 23 19:37:44 2009 +0200" }, "message": "perf_counter: Fix dynamic irq_period logging\n\nWe call perf_adjust_freq() from perf_counter_task_tick() which\nis is called under the rq-\u003elock causing lock recursion.\nHowever, it\u0027s no longer required to be called under the\nrq-\u003elock, so remove it from under it.\n\nAlso, fix up some related comments.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Corey Ashford \u003ccjashfor@linux.vnet.ibm.com\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nCc: John Kacur \u003cjkacur@redhat.com\u003e\nLKML-Reference: \u003c20090523163012.476197912@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "564c2b210add41df9a3a5aaa365c1d97cff6110d", "tree": "2fe54df816abfe8c6010d277c79fbe18aa5c4082", "parents": [ "a63eaf34ae60bdb067a354cc8def2e8f4a01f5f4" ], "author": { "name": "Paul Mackerras", "email": "paulus@samba.org", "time": "Fri May 22 14:27:22 2009 +1000" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri May 22 12:18:20 2009 +0200" }, "message": "perf_counter: Optimize context switch between identical inherited contexts\n\nWhen monitoring a process and its descendants with a set of inherited\ncounters, we can often get the situation in a context switch where\nboth the old (outgoing) and new (incoming) process have the same set\nof counters, and their values are ultimately going to be added together.\nIn that situation it doesn\u0027t matter which set of counters are used to\ncount the activity for the new process, so there is really no need to\ngo through the process of reading the hardware counters and updating\nthe old task\u0027s counters and then setting up the PMU for the new task.\n\nThis optimizes the context switch in this situation. Instead of\nscheduling out the perf_counter_context for the old task and\nscheduling in the new context, we simply transfer the old context\nto the new task and keep using it without interruption. The new\ncontext gets transferred to the old task. This means that both\ntasks still have a valid perf_counter_context, so no special case\nis introduced when the old task gets scheduled in again, either on\nthis CPU or another CPU.\n\nThe equivalence of contexts is detected by keeping a pointer in\neach cloned context pointing to the context it was cloned from.\nTo cope with the situation where a context is changed by adding\nor removing counters after it has been cloned, we also keep a\ngeneration number on each context which is incremented every time\na context is changed. When a context is cloned we take a copy\nof the parent\u0027s generation number, and two cloned contexts are\nequivalent only if they have the same parent and the same\ngeneration number. In order that the parent context pointer\nremains valid (and is not reused), we increment the parent\ncontext\u0027s reference count for each context cloned from it.\n\nSince we don\u0027t have individual fds for the counters in a cloned\ncontext, the only thing that can make two clones of a given parent\ndifferent after they have been cloned is enabling or disabling all\ncounters with prctl. To account for this, we keep a count of the\nnumber of enabled counters in each context. Two contexts must have\nthe same number of enabled counters to be considered equivalent.\n\nHere are some measurements of the context switch time as measured with\nthe lat_ctx benchmark from lmbench, comparing the times obtained with\nand without this patch series:\n\n\t\t-----Unmodified-----\t\tWith this patch series\nCounters:\tnone\t2 HW\t4H+4S\tnone\t2 HW\t4H+4S\n\n2 processes:\nAverage\t\t3.44\t6.45\t11.24\t3.12\t3.39\t3.60\nSt dev\t\t0.04\t0.04\t0.13\t0.05\t0.17\t0.19\n\n8 processes:\nAverage\t\t6.45\t8.79\t14.00\t5.57\t6.23\t7.57\nSt dev\t\t1.27\t1.04\t0.88\t1.42\t1.46\t1.42\n\n32 processes:\nAverage\t\t5.56\t8.43\t13.78\t5.28\t5.55\t7.15\nSt dev\t\t0.41\t0.47\t0.53\t0.54\t0.57\t0.81\n\nThe numbers are the mean and standard deviation of 20 runs of\nlat_ctx. The \"none\" columns are lat_ctx run directly without any\ncounters. The \"2 HW\" columns are with lat_ctx run under perfstat,\ncounting cycles and instructions. The \"4H+4S\" columns are lat_ctx run\nunder perfstat with 4 hardware counters and 4 software counters\n(cycles, instructions, cache references, cache misses, task\nclock, context switch, cpu migrations, and page faults).\n\n[ Impact: performance optimization of counter context-switches ]\n\nSigned-off-by: Paul Mackerras \u003cpaulus@samba.org\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Corey Ashford \u003ccjashfor@linux.vnet.ibm.com\u003e\nCc: Marcelo Tosatti \u003cmtosatti@redhat.com\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nLKML-Reference: \u003c18966.10666.517218.332164@cargo.ozlabs.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "4200efd9acda4accf24640f1e77d24fdcdb524df", "tree": "ffeda24ae6a9c1b8ca94615e261434d925d2ed2c", "parents": [ "2d02494f5a90f2e4b3c4c6acc85ec94674cdc431" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue May 19 09:22:19 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue May 19 09:22:19 2009 +0200" }, "message": "sched: properly define the sched_group::cpumask and sched_domain::span fields\n\nProperly document the variable-size structure tricks we are doing\nwrt. struct sched_group and sched_domain, and use the field[0] GCC\nextension instead of defining a vla array.\n\nDont use unions for this, as pointed out by Linus.\n\n[ Impact: cleanup, un-confuse Sparse and LLVM ]\n\nReported-by: Jeff Garzik \u003cjeff@garzik.org\u003e\nAcked-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nLKML-Reference: \u003calpine.LFD.2.01.0905180850110.3301@localhost.localdomain\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "dc3f81b129b5439ba7bac265bbc6a51a39275dae", "tree": "216030731d911249496d2e97206cd61431e31c89", "parents": [ "d2517a49d55536b38c7a87e5289550cfedaa4dcc", "1406de8e11eb043681297adf86d6892ff8efc27a" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 18 07:37:44 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 18 07:37:49 2009 +0200" }, "message": "Merge commit \u0027v2.6.30-rc6\u0027 into perfcounters/core\n\nMerge reason: this branch was on an -rc4 base, merge it up to -rc6\n to get the latest upstream fixes.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "2d02494f5a90f2e4b3c4c6acc85ec94674cdc431", "tree": "8032438de5b55282976583b111d02d9379ff3966", "parents": [ "dce48a84adf1806676319f6f480e30a6daa012f9" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Sat May 02 20:08:52 2009 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 15 15:32:45 2009 +0200" }, "message": "sched, timers: cleanup avenrun users\n\navenrun is an rough estimate so we don\u0027t have to worry about\nconsistency of the three avenrun values. Remove the xtime lock\ndependency and provide a function to scale the values. Cleanup the\nusers.\n\n[ Impact: cleanup ]\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nAcked-by: Peter Zijlstra \u003cpeterz@infradead.org\u003e\n" }, { "commit": "dce48a84adf1806676319f6f480e30a6daa012f9", "tree": "79151f5d31d9c3dcdc723ab8877cb943b944890e", "parents": [ "2ff799d3cff1ecb274049378b28120ee5c1c5e5f" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Sat Apr 11 10:43:41 2009 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 15 15:32:45 2009 +0200" }, "message": "sched, timers: move calc_load() to scheduler\n\nDimitri Sivanich noticed that xtime_lock is held write locked across\ncalc_load() which iterates over all online CPUs. That can cause long\nlatencies for xtime_lock readers on large SMP systems. \n\nThe load average calculation is an rough estimate anyway so there is\nno real need to protect the readers vs. the update. It\u0027s not a problem\nwhen the avenrun array is updated while a reader copies the values.\n\nInstead of iterating over all online CPUs let the scheduler_tick code\nupdate the number of active tasks shortly before the avenrun update\nhappens. The avenrun update itself is handled by the CPU which calls\ndo_timer().\n\n[ Impact: reduce xtime_lock write locked section ]\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nAcked-by: Peter Zijlstra \u003cpeterz@infradead.org\u003e\n" }, { "commit": "eea08f32adb3f97553d49a4f79a119833036000a", "tree": "4e6af5185309d7abe49a8fa19634ea38582381e4", "parents": [ "cd1bb94b4a0531e8211a3774f17de831f8285f76" ], "author": { "name": "Arun R Bharadwaj", "email": "arun@linux.vnet.ibm.com", "time": "Thu Apr 16 12:16:41 2009 +0530" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed May 13 16:52:42 2009 +0200" }, "message": "timers: Logic to move non pinned timers\n\n* Arun R Bharadwaj \u003carun@linux.vnet.ibm.com\u003e [2009-04-16 12:11:36]:\n\nThis patch migrates all non pinned timers and hrtimers to the current\nidle load balancer, from all the idle CPUs. Timers firing on busy CPUs\nare not migrated.\n\nWhile migrating hrtimers, care should be taken to check if migrating\na hrtimer would result in a latency or not. So we compare the expiry of the\nhrtimer with the next timer interrupt on the target cpu and migrate the\nhrtimer only if it expires *after* the next interrupt on the target cpu.\nSo, added a clockevents_get_next_event() helper function to return the\nnext_event on the target cpu\u0027s clock_event_device.\n\n[ tglx: cleanups and simplifications ]\n\nSigned-off-by: Arun R Bharadwaj \u003carun@linux.vnet.ibm.com\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "cd1bb94b4a0531e8211a3774f17de831f8285f76", "tree": "0a031dd2bd984cbfec88a3ced6b2c6e3326efb88", "parents": [ "5c333864a6ba811052d52ef14fbed056b9ac3512" ], "author": { "name": "Arun R Bharadwaj", "email": "arun@linux.vnet.ibm.com", "time": "Thu Apr 16 12:15:34 2009 +0530" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed May 13 16:52:42 2009 +0200" }, "message": "timers: /proc/sys sysctl hook to enable timer migration\n\n* Arun R Bharadwaj \u003carun@linux.vnet.ibm.com\u003e [2009-04-16 12:11:36]:\n\nThis patch creates the /proc/sys sysctl interface at\n/proc/sys/kernel/timer_migration\n\nTimer migration is enabled by default.\n\nTo disable timer migration, when CONFIG_SCHED_DEBUG \u003d y,\n\necho 0 \u003e /proc/sys/kernel/timer_migration\n\nSigned-off-by: Arun R Bharadwaj \u003carun@linux.vnet.ibm.com\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "5c333864a6ba811052d52ef14fbed056b9ac3512", "tree": "b0efe8d72c1cd5c555d528c0155251026425e695", "parents": [ "597d0275736dad9c3bda6f0a00a1c477dc0f37b1" ], "author": { "name": "Arun R Bharadwaj", "email": "arun@linux.vnet.ibm.com", "time": "Thu Apr 16 12:14:37 2009 +0530" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed May 13 16:52:42 2009 +0200" }, "message": "timers: Identifying the existing pinned timers\n\n* Arun R Bharadwaj \u003carun@linux.vnet.ibm.com\u003e [2009-04-16 12:11:36]:\n\nThe following pinned hrtimers have been identified and marked:\n1)sched_rt_period_timer\n2)tick_sched_timer\n3)stack_trace_timer_fn\n\n[ tglx: fixup the hrtimer pinned mode ]\n\nSigned-off-by: Arun R Bharadwaj \u003carun@linux.vnet.ibm.com\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "7961386fe9596e6bf03d09948a73c5df9653325b", "tree": "60fa2586a0d340ef8f7473956eef17430d8250c7", "parents": [ "aa47b7e0f89b9998dad4d1667447e8cb7703ff4e", "091bf7624d1c90cec9e578a18529f615213ff847" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 11 12:59:32 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 11 12:59:37 2009 +0200" }, "message": "Merge commit \u0027v2.6.30-rc5\u0027 into sched/core\n\nMerge reason: sched/core was on .30-rc1 before, update to latest fixes\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "f066a155334642b8a206eec625b1925d88c48aeb", "tree": "cb12975e60b70d1dae3b7397bab955de78a4d01e", "parents": [ "e7c064889606aab3569669078c69b87b2c527e72", "33df4db04a79660150e1948e3296eeb451ac121b" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri May 08 10:50:00 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri May 08 10:50:00 2009 +0200" }, "message": "Merge branch \u0027x86/urgent\u0027 into x86/xen\n\nConflicts:\n\tarch/frv/include/asm/pgtable.h\n\tarch/x86/include/asm/required-features.h\n\tarch/x86/xen/mmu.c\n\nMerge reason: x86/xen was on a .29 base still, move it to a fresher\n branch and pick up Xen fixes as well, plus resolve\n conflicts\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "0ad5d703c6c0fcd385d956555460df95dff7eb7e", "tree": "4b777100f9be4fe90ca4bd043b9f98df672b5b3b", "parents": [ "44347d947f628060b92449702071bfe1d31dfb75", "1cb81b143fa8f0e4629f10690862e2e52ca792ff" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu May 07 11:18:34 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu May 07 13:36:22 2009 +0200" }, "message": "Merge branch \u0027tracing/hw-branch-tracing\u0027 into tracing/core\n\nMerge reason: this topic is ready for upstream now. It passed\n Oleg\u0027s review and Andrew had no further mm/*\n objections/observations either.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "44347d947f628060b92449702071bfe1d31dfb75", "tree": "c6ed74610d5b3295df4296659f80f5feb94b28cc", "parents": [ "d94fc523f3c35bd8013f04827e94756cbc0212f4", "413f81eba35d6ede9289b0c8a920c013a84fac71" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu May 07 11:17:13 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu May 07 11:17:34 2009 +0200" }, "message": "Merge branch \u0027linus\u0027 into tracing/core\n\nMerge reason: tracing/core was on a .30-rc1 base and was missing out on\n on a handful of tracing fixes present in .30-rc5-almost.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "aa47b7e0f89b9998dad4d1667447e8cb7703ff4e", "tree": "6d4cf92c2dffccb59432652303b46ffe991d37a7", "parents": [ "60aa605dfce2976e54fa76e805ab0f221372d4d9" ], "author": { "name": "David Rientjes", "email": "rientjes@google.com", "time": "Mon May 04 01:38:05 2009 -0700" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu May 07 09:36:28 2009 +0200" }, "message": "sched: emit thread info flags with stack trace\n\nWhen a thread is oom killed and fails to exit, it\u0027s helpful to know which\nthreads have access to memory reserves if the machine livelocks. This is\ndone by testing for the TIF_MEMDIE thread info flag and should be\ndisplayed alongside stack traces to identify tasks that have access to\nsuch reserves but are still stuck allocating pages, for instance.\n\nIt would probably be helpful in other cases as well, so all thread info\nflags are emitted when showing a task.\n\n( v2: fix warning reported by Stephen Rothwell )\n\n[ Impact: extend debug printout info ]\n\nSigned-off-by: David Rientjes \u003crientjes@google.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Stephen Rothwell \u003csfr@canb.auug.org.au\u003e\nLKML-Reference: \u003calpine.DEB.2.00.0905040136390.15831@chino.kir.corp.google.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "de1d7286060430e79a1d50ad6e5fee8fe863c5f6", "tree": "0d3ebef66d5d4634bc1d4fee501a8a309e5aa874", "parents": [ "20c8928abe70e204bd077ab6cfe23002d7788983" ], "author": { "name": "Mathieu Desnoyers", "email": "mathieu.desnoyers@polymtl.ca", "time": "Tue May 05 16:49:59 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed May 06 12:15:51 2009 +0200" }, "message": "tracepoint: trace_sched_migrate_task(): remove parameter\n\nThe orig_cpu parameter in trace_sched_migrate_task() is not necessary,\nit can be got by using task_cpu(p) in the probe.\n\n[ Impact: micro-optimization ]\n\nSigned-off-by: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\n[ modified from Mathieu\u0027s patch. The original patch is at:\n http://marc.info/?l\u003dlinux-kernel\u0026m\u003d123791201716239\u0026w\u003d2 ]\nSigned-off-by: Xiao Guangrong \u003cxiaoguangrong@cn.fujitsu.com\u003e\nCc: fweisbec@gmail.com\nCc: rostedt@goodmis.org\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: zhaolei@cn.fujitsu.com\nCc: laijs@cn.fujitsu.com\nLKML-Reference: \u003c49FFFDB7.1050402@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "60aa605dfce2976e54fa76e805ab0f221372d4d9", "tree": "097a6ddd4127039f79e36a2e9100b653551d997d", "parents": [ "6e29ec5701e9d44fa02b96c1c5c45f7516182b65" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Tue May 05 17:50:21 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue May 05 20:07:57 2009 +0200" }, "message": "sched: rt: document the risk of small values in the bandwidth settings\n\nThomas noted that we should disallow sysctl_sched_rt_runtime \u003d\u003d 0 for\n(!RT_GROUP) since the root group always has some RT tasks in it.\n\nFurther, update the documentation to inspire clue.\n\n[ Impact: exclude corner-case sysctl_sched_rt_runtime value ]\n\nReported-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: \u003c20090505155436.863098054@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "0d905bca23aca5c86a10ee101bcd3b1abbd40b25", "tree": "5a4e6b956d1923ac1d28ae8b8f3034c1c90df5a5", "parents": [ "ba77813a2a22d631fe5bc0bf1ec0d11350544b70" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 04 19:13:30 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 04 19:30:32 2009 +0200" }, "message": "perf_counter: initialize the per-cpu context earlier\n\npercpu scheduling for perfcounters wants to take the context lock,\nbut that lock first needs to be initialized. Currently it is an\nearly_initcall() - but that is too late, the task tick runs much\nsooner than that.\n\nCall it explicitly from the scheduler init sequence instead.\n\n[ Impact: fix access-before-init crash ]\n\nLKML-Reference: \u003cnew-submission\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "f5f293a4e3d0a0c52cec31de6762c95050156516", "tree": "b9dad5f4b1e834e414e825345b32fadd1ed6c01a", "parents": [ "56a50adda49b2020156616c4eb15353e0f9ad7de" ], "author": { "name": "Eric Dumazet", "email": "dada1@cosmosbay.com", "time": "Wed Apr 29 14:44:49 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Apr 29 15:02:28 2009 +0200" }, "message": "sched: account system time properly\n\nAndrew Gallatin reported that IRQ and SOFTIRQ times were\nsometime not reported correctly on recent kernels, and even\nbisected to commit 457533a7d3402d1d91fbc125c8bd1bd16dcd3cd4\n([PATCH] fix scaled \u0026 unscaled cputime accounting) as the first\nbad commit.\n\nFurther analysis pointed that commit\n79741dd35713ff4f6fd0eafd59fa94e8a4ba922d ([PATCH] idle cputime\naccounting) was the real cause of the problem.\n\naccount_process_tick() was not taking into account timer IRQ\ninterrupting the idle task servicing a hard or soft irq.\n\nOn mostly idle cpu, irqs were thus not accounted and top or\nmpstat could tell user/admin that cpu was 100 % idle, 0.00 %\nirq, 0.00 % softirq, while it was not.\n\n[ Impact: fix occasionally incorrect CPU statistics in top/mpstat ]\n\nReported-by: Andrew Gallatin \u003cgallatin@myri.com\u003e\nRe-reported-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Eric Dumazet \u003cdada1@cosmosbay.com\u003e\nAcked-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: rick.jones2@hp.com\nCc: brice@myri.com\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nLKML-Reference: \u003c49F84BC1.7080602@cosmosbay.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "e7fd5d4b3d240f42c30a9e3d20a4689c4d3a795a", "tree": "4ba588631dd8189a818a91c9e3976526071178b6", "parents": [ "1130b0296184bc21806225fd06d533515a99d2db", "56a50adda49b2020156616c4eb15353e0f9ad7de" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Apr 29 14:46:59 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Apr 29 14:47:05 2009 +0200" }, "message": "Merge branch \u0027linus\u0027 into perfcounters/core\n\nMerge reason: This brach was on -rc1, refresh it to almost-rc4 to pick up\n the latest upstream fixes.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "50fa610a3b6ba7cf91d7a92229177dfaff2b81a1", "tree": "0369fc3269a18f8d2ffcedaebe4ac875bbe9870c", "parents": [ "56a50adda49b2020156616c4eb15353e0f9ad7de" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Tue Apr 28 15:01:38 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Apr 29 14:15:55 2009 +0200" }, "message": "sched: Document memory barriers implied by sleep/wake-up primitives\n\nAdd a section to the memory barriers document to note the implied\nmemory barriers of sleep primitives (set_current_state() and wrappers)\nand wake-up primitives (wake_up() and co.).\n\nAlso extend the in-code comments on the wake_up() functions to note\nthese implied barriers.\n\n[ Impact: add documentation ]\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nLKML-Reference: \u003c20090428140138.1192.94723.stgit@warthog.procyon.org.uk\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "416dfdcdb894432547ead4fcb9fa6a36b396059e", "tree": "8033fdda07397a59c5fa98c88927040906ce6c1a", "parents": [ "56449f437add737a1e5e1cb7e00f63ac8ead1938", "091069740304c979f957ceacec39c461d0192158" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Apr 24 10:11:18 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Apr 24 10:11:23 2009 +0200" }, "message": "Merge commit \u0027v2.6.30-rc3\u0027 into tracing/hw-branch-tracing\n\nConflicts:\n\tarch/x86/kernel/ptrace.c\n\nMerge reason: fix the conflict above, and also pick up the CONFIG_BROKEN\n dependency change from upstream so that we can remove it\n\t here.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "6e29ec5701e9d44fa02b96c1c5c45f7516182b65", "tree": "16f9ebc56d995741a4041e81f1cdfc58f2161aaa", "parents": [ "ff743345bf7685a207868048a70e23164c4785e5" ], "author": { "name": "Gautham R Shenoy", "email": "ego@in.ibm.com", "time": "Tue Apr 21 08:40:49 2009 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Apr 21 08:06:05 2009 +0200" }, "message": "sched: Replace first_cpu() with cpumask_first() in ILB nomination code\n\nStephen Rothwell reported this build warning:\n\n\u003e kernel/sched.c: In function \u0027find_new_ilb\u0027:\n\u003e kernel/sched.c:4355: warning: passing argument 1 of \u0027__first_cpu\u0027 from incompatible pointer type\n\u003e\n\u003e Possibly caused by commit f711f6090a81cbd396b63de90f415d33f563af9b\n\u003e (\"sched: Nominate idle load balancer from a semi-idle package\") from\n\u003e the sched tree. Should this call to first_cpu be cpumask_first?\n\nFor !(CONFIG_SCHED_MC || CONFIG_SCHED_SMT), find_new_ilb() nominates the\nIdle load balancer as the first cpu from the nohz.cpu_mask.\n\nThis code uses the older API first_cpu(). Replace it with cpumask_first(),\nwhich is the correct API here.\n\n[ Impact: cleanup, address build warning ]\n\nReported-by: Stephen Rothwell \u003csfr@canb.auug.org.au\u003e\nSigned-off-by: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nLKML-Reference: \u003c20090421031049.GA4140@in.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "ff743345bf7685a207868048a70e23164c4785e5", "tree": "7cdb917ad5ac3aa7798b0358a246ddc46a363cdc", "parents": [ "13318a7186d8e0ae08c996ea4111a945e7789772" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Fri Mar 13 12:21:26 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Apr 20 20:49:53 2009 +0200" }, "message": "sched: remove extra call overhead for schedule()\n\nLai Jiangshan\u0027s patch reminded me that I promised Nick to remove\nthat extra call overhead in schedule().\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: \u003c20090313112300.927414207@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "f1f9b3b1795da8625e0e6096813c9d18d4a344ce", "tree": "5b5b8a9bc5e8b92962708282484a01d86a2027e2", "parents": [ "125e702b09a28a502e145fb434678ee27720fc48" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Apr 20 20:38:21 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Apr 20 20:38:21 2009 +0200" }, "message": "perfcounters, sched: remove __task_delta_exec()\n\nThis function was left orphan by the latest round of sw-counter\ncleanups.\n\n[ Impact: remove unused kernel function ]\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "381512cf3d27f63f7a45b1bbe7d2d609c2ea3b74", "tree": "f401d1c8d3cc859d10f2c05485cc79c8fd9e3fbf", "parents": [ "132380a06b24704fd6c9be55c44d4ef3972cead2" ], "author": { "name": "Gautham R Shenoy", "email": "ego@in.ibm.com", "time": "Tue Apr 14 09:09:36 2009 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Apr 17 00:46:05 2009 +0200" }, "message": "sched: Avoid printing sched_group::__cpu_power for default case\n\nCommit 46e0bb9c12f4 (\"sched: Print sched_group::__cpu_power\nin sched_domain_debug\") produces a messy dmesg output while\nattempting to print the sched_group::__cpu_power for each\ngroup in the sched_domain hierarchy.\n\nFix this by avoid printing the __cpu_power for default cases.\n(i.e, __cpu_power \u003d\u003d SCHED_LOAD_SCALE).\n\n[ Impact: reduce syslog clutter ]\n\nReported-by: Tony Luck \u003ctony.luck@intel.com\u003e\nSigned-off-by: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nFixed-by: Tony Luck \u003ctony.luck@intel.com\u003e\nCc: a.p.zijlstra@chello.nl\nLKML-Reference: \u003c20090414033936.GA534@in.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "13318a7186d8e0ae08c996ea4111a945e7789772", "tree": "1260da0d89fae5cd50419cfdba8cf0a7ee352c37", "parents": [ "78ddb08feb7d4fbe3c0a9931804c51ee58be4023" ], "author": { "name": "Miao Xie", "email": "miaox@cn.fujitsu.com", "time": "Wed Apr 15 09:59:10 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Apr 15 13:34:07 2009 +0200" }, "message": "sched: use group_first_cpu() instead of cpumask_first(sched_group_cpus())\n\nImpact: cleanup\n\nThis patch changes cpumask_first(sched_group_cpus()) to group_first_cpu()\nfor maintainability.\n\nSigned-off-by: Miao Xie \u003cmiaox@cn.fujitsu.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "ad8d75fff811a6a230f7f43b05a6483099349533", "tree": "764f75c0785b29067b141719b6e8000f005da7fd", "parents": [ "ecda8ae02a08ef065ff387f5cb2a2d4999da2408" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Apr 14 19:39:12 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Tue Apr 14 22:05:43 2009 -0400" }, "message": "tracing/events: move trace point headers into include/trace/events\n\nImpact: clean up\n\nCreate a sub directory in include/trace called events to keep the\ntrace point headers in their own separate directory. Only headers that\ndeclare trace points should be defined in this directory.\n\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Neil Horman \u003cnhorman@tuxdriver.com\u003e\nCc: Zhao Lei \u003czhaolei@cn.fujitsu.com\u003e\nCc: Eduard - Gabriel Munteanu \u003ceduard.munteanu@linux360.ro\u003e\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "a8d154b009168337494fbf345671bab74d3e4b8b", "tree": "4097612e1a5cc8bf7658542f7d0f51b815113eaf", "parents": [ "ea20d9293ce423a39717ed4375393129a2e701f9" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Fri Apr 10 09:36:00 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Tue Apr 14 12:57:28 2009 -0400" }, "message": "tracing: create automated trace defines\n\nThis patch lowers the number of places a developer must modify to add\nnew tracepoints. The current method to add a new tracepoint\ninto an existing system is to write the trace point macro in the\ntrace header with one of the macros TRACE_EVENT, TRACE_FORMAT or\nDECLARE_TRACE, then they must add the same named item into the C file\nwith the macro DEFINE_TRACE(name) and then add the trace point.\n\nThis change cuts out the needing to add the DEFINE_TRACE(name).\nEvery file that uses the tracepoint must still include the trace/\u003ctype\u003e.h\nfile, but the one C file must also add a define before the including\nof that file.\n\n #define CREATE_TRACE_POINTS\n #include \u003ctrace/mytrace.h\u003e\n\nThis will cause the trace/mytrace.h file to also produce the C code\nnecessary to implement the trace point.\n\nNote, if more than one trace/\u003ctype\u003e.h is used to create the C code\nit is best to list them all together.\n\n #define CREATE_TRACE_POINTS\n #include \u003ctrace/foo.h\u003e\n #include \u003ctrace/bar.h\u003e\n #include \u003ctrace/fido.h\u003e\n\nThanks to Mathieu Desnoyers and Christoph Hellwig for coming up with\nthe cleaner solution of the define above the includes over my first\ndesign to have the C code include a \"special\" header.\n\nThis patch converts sched, irq and lockdep and skb to use this new\nmethod.\n\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Neil Horman \u003cnhorman@tuxdriver.com\u003e\nCc: Zhao Lei \u003czhaolei@cn.fujitsu.com\u003e\nCc: Eduard - Gabriel Munteanu \u003ceduard.munteanu@linux360.ro\u003e\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "78ddb08feb7d4fbe3c0a9931804c51ee58be4023", "tree": "3cd3485561a9ac036003fd4da41fdc485cd5ac71", "parents": [ "e790fb0ba64bfec158e1219d899cb588275d12ab" ], "author": { "name": "Johannes Weiner", "email": "hannes@cmpxchg.org", "time": "Tue Apr 14 16:53:05 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Apr 14 17:17:16 2009 +0200" }, "message": "wait: don\u0027t use __wake_up_common()\n\n\u0027777c6c5 wait: prevent exclusive waiter starvation\u0027 made\n__wake_up_common() global to be used from abort_exclusive_wait().\n\nIt was needed to do a wake-up with the waitqueue lock held while\npassing down a key to the wake-up function.\n\nSince \u00274ede816 epoll keyed wakeups: add __wake_up_locked_key() and\n__wake_up_sync_key()\u0027 there is an appropriate wrapper for this case:\n__wake_up_locked_key().\n\nUse it here and make __wake_up_common() private to the scheduler\nagain.\n\nSigned-off-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: \u003c1239720785-19661-1-git-send-email-hannes@cmpxchg.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "e790fb0ba64bfec158e1219d899cb588275d12ab", "tree": "f4eda89681e027cd617881773ab0559d9fced430", "parents": [ "f711f6090a81cbd396b63de90f415d33f563af9b" ], "author": { "name": "Gautham R Shenoy", "email": "ego@in.ibm.com", "time": "Tue Apr 14 10:25:35 2009 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Apr 14 11:49:19 2009 +0200" }, "message": "sched: Nominate a power-efficient ilb in select_nohz_balancer()\n\nThe CPU that first goes idle becomes the idle-load-balancer and remains\nthat until either it picks up a task or till all the CPUs of the system\ngoes idle.\n\nOptimize this further to allow it to relinquish it\u0027s post\nonce all it\u0027s siblings in the power-aware sched_domain go idle, thereby\nallowing the whole package-core to go idle. While relinquising the post,\nnominate another an idle-load balancer from a semi-idle core/package.\n\nSigned-off-by: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: \u003c20090414045535.7645.31641.stgit@sofia.in.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "f711f6090a81cbd396b63de90f415d33f563af9b", "tree": "b2212ddcae5a88a1ca6a521a892003af1d5a35bc", "parents": [ "002f128b473fb82f454654be5081b0919ee01ab2" ], "author": { "name": "Gautham R Shenoy", "email": "ego@in.ibm.com", "time": "Tue Apr 14 10:25:30 2009 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Apr 14 11:49:19 2009 +0200" }, "message": "sched: Nominate idle load balancer from a semi-idle package.\n\nCurrently the nomination of idle-load balancer is done by choosing the first\nidle cpu in the nohz.cpu_mask. This may not be power-efficient, since\nsuch an idle cpu could come from a completely idle core/package thereby\npreventing the whole core/package from being in a low-power state.\n\nFor eg, consider a quad-core dual package system. The cpu numbering need\nnot be sequential and can something like [0, 2, 4, 6] and [1, 3, 5, 7].\nWith sched_mc/smt_power_savings and the power-aware IRQ balance, we try to keep\nas fewer Packages/Cores active. But the current idle load balancer logic\ngoes against this by choosing the first_cpu in the nohz.cpu_mask and not\ntaking the system topology into consideration.\n\nImprove the algorithm to nominate the idle load balancer from a semi idle\ncores/packages thereby increasing the probability of the cores/packages being\nin deeper sleep states for longer duration.\n\nThe algorithm is activated only when sched_mc/smt_power_savings !\u003d 0.\n\nSigned-off-by: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: \u003c20090414045530.7645.12175.stgit@sofia.in.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "132380a06b24704fd6c9be55c44d4ef3972cead2", "tree": "aa3fc07fc990efae702484c01e141b0355a98948", "parents": [ "2e1c63b7ed36532b68f0eddd6a184d7ba1013b89" ], "author": { "name": "Lai Jiangshan", "email": "laijs@cn.fujitsu.com", "time": "Thu Apr 02 14:18:25 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Apr 14 02:11:05 2009 +0200" }, "message": "tracing, sched: mark get_parent_ip() notrace\n\nImpact: remove overly redundant tracing entries\n\nWhen tracer is \"function\" or \"function_graph\", way too much\n\"get_parent_ip\" entries are recorded in ring_buffer.\n\nSigned-off-by: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nAcked-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nAcked-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nLKML-Reference: \u003c49D458B1.5000703@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "5af8c4e0fac9838428bd718040b664043a05f37c", "tree": "75a01d98ed244db45fe3c734c4a81c1a3d92ac37", "parents": [ "46e0bb9c12f4bab539736f1714cbf16600f681ec", "577c9c456f0e1371cbade38eaf91ae8e8a308555" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Apr 08 17:25:42 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Apr 08 17:26:00 2009 +0200" }, "message": "Merge commit \u0027v2.6.30-rc1\u0027 into sched/urgent\n\nMerge reason: update to latest upstream to queue up fix\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "38f4b8c0da01ae7cd9b93386842ce272d6fde9ab", "tree": "3c8c52201aac038094bfea7efdd0984a8f62045e", "parents": [ "a811454027352c762e0d5bba1b1d8f7d26bf96ae", "8e2c4f2844c0e8dcdfe312e5f2204854ca8532c6" ], "author": { "name": "Jeremy Fitzhardinge", "email": "jeremy.fitzhardinge@citrix.com", "time": "Tue Apr 07 13:34:16 2009 -0700" }, "committer": { "name": "Jeremy Fitzhardinge", "email": "jeremy.fitzhardinge@citrix.com", "time": "Tue Apr 07 13:34:16 2009 -0700" }, "message": "Merge commit \u0027origin/master\u0027 into for-linus/xen/master\n\n* commit \u0027origin/master\u0027: (4825 commits)\n Fix build errors due to CONFIG_BRANCH_TRACER\u003dy\n parport: Use the PCI IRQ if offered\n tty: jsm cleanups\n Adjust path to gpio headers\n KGDB_SERIAL_CONSOLE check for module\n Change KCONFIG name\n tty: Blackin CTS/RTS\n Change hardware flow control from poll to interrupt driven\n Add support for the MAX3100 SPI UART.\n lanana: assign a device name and numbering for MAX3100\n serqt: initial clean up pass for tty side\n tty: Use the generic RS485 ioctl on CRIS\n tty: Correct inline types for tty_driver_kref_get()\n splice: fix deadlock in splicing to file\n nilfs2: support nanosecond timestamp\n nilfs2: introduce secondary super block\n nilfs2: simplify handling of active state of segments\n nilfs2: mark minor flag for checkpoint created by internal operation\n nilfs2: clean up sketch file\n nilfs2: super block operations fix endian bug\n ...\n\nConflicts:\n\tarch/x86/include/asm/thread_info.h\n\tarch/x86/lguest/boot.c\n\tdrivers/xen/manage.c\n" }, { "commit": "a26b89f05d194413c7238e0bea071054f6b5d3c8", "tree": "8a2efbabce49ed747fe9b54e282e04b82d1b9982", "parents": [ "cac94f979326212831c0ea44ed9ea1622b4f4e93" ], "author": { "name": "Markus Metzger", "email": "markus.t.metzger@intel.com", "time": "Fri Apr 03 16:43:34 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Apr 07 13:36:12 2009 +0200" }, "message": "sched, hw-branch-tracer: add wait_task_context_switch() function to sched.h\n\nAdd a function to wait until some other task has been\nswitched out at least once.\n\nThis differs from wait_task_inactive() subtly, in that the\nlatter will wait until the task has left the CPU.\n\nSigned-off-by: Markus Metzger \u003cmarkus.t.metzger@intel.com\u003e\nCc: markus.t.metzger@gmail.com\nCc: roland@redhat.com\nCc: eranian@googlemail.com\nCc: oleg@redhat.com\nCc: juan.villacis@intel.com\nCc: ak@linux.jf.intel.com\nLKML-Reference: \u003c20090403144549.794157000@intel.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "6c009ecef8cca28c7c09eb16d0802e37915a76e1", "tree": "11c773f780186fdb9fbc9c80a73fb7c8426b1fba", "parents": [ "98c2aaf8be5baf7193be37fb28bce8e7327158bc", "d508afb437daee7cf07da085b635c44a4ebf9b38" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Apr 07 12:05:21 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Apr 07 12:05:25 2009 +0200" }, "message": "Merge branch \u0027linus\u0027 into perfcounters/core\n\nMerge reason: need the upstream facility added by:\n\n 7f1e2ca: hrtimer: fix rq-\u003elock inversion (again)\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "849691a6cd40270ff5f4a8846d5f6bf8df663ffc", "tree": "b61157f375905d21bf0facae603e4247e1de9007", "parents": [ "a39d6f2556c4a19f58f538c6aa28bf8faca4fcb8" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Mon Apr 06 11:45:12 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Apr 07 10:49:01 2009 +0200" }, "message": "perf_counter: remove rq-\u003elock usage\n\nNow that all the task runtime clock users are gone, remove the ugly\nrq-\u003elock usage from perf counters, which solves the nasty deadlock\nseen when a software task clock counter was read from an NMI overflow\ncontext.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Corey Ashford \u003ccjashfor@linux.vnet.ibm.com\u003e\nLKML-Reference: \u003c20090406094518.531137582@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "609862be074cc20e007c640fd936ffe798b41abc", "tree": "2ebcacf036fce1b075fe267f608b6abe3f196c67", "parents": [ "12fe32e4f942ac5c71a4ab70b039fee65c0dc29d", "eedeeabdeeadb016b8c783e3620d06b98d0cb4e1" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 06 13:37:30 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 06 13:37:30 2009 -0700" }, "message": "Merge branch \u0027locking-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027locking-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n lockdep: add stack dumps to asserts\n hrtimer: fix rq-\u003elock inversion (again)\n" }, { "commit": "4a0deca657f3dbb8a707b5dc8f173beec01e7ed2", "tree": "b52fb2d5fa3391f5eac37ca599413b4e8d187c0c", "parents": [ "01ef09d9ffb5ce9f8d62d1e5206da3d5ca612acc" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Thu Mar 19 20:26:12 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Apr 06 09:30:15 2009 +0200" }, "message": "perf_counter: generic context switch event\n\nImpact: cleanup\n\nUse the generic software events for context switches.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nOrig-LKML-Reference: \u003c20090319194233.283522645@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "f541ae326fa120fa5c57433e4d9a133df212ce41", "tree": "bdbd94ec72cfc601118051cb35e8617d55510177", "parents": [ "e255357764f92afcafafbd4879b222b8c752065a", "0221c81b1b8eb0cbb6b30a0ced52ead32d2b4e4c" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Apr 06 09:02:57 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Apr 06 09:02:57 2009 +0200" }, "message": "Merge branch \u0027linus\u0027 into perfcounters/core-v2\n\nMerge reason: we have gathered quite a few conflicts, need to merge upstream\n\nConflicts:\n\tarch/powerpc/kernel/Makefile\n\tarch/x86/ia32/ia32entry.S\n\tarch/x86/include/asm/hardirq.h\n\tarch/x86/include/asm/unistd_32.h\n\tarch/x86/include/asm/unistd_64.h\n\tarch/x86/kernel/cpu/common.c\n\tarch/x86/kernel/irq.c\n\tarch/x86/kernel/syscall_table_32.S\n\tarch/x86/mm/iomap_32.c\n\tinclude/linux/sched.h\n\tkernel/Makefile\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "714f83d5d9f7c785f622259dad1f4fad12d64664", "tree": "20563541ae438e11d686b4d629074eb002a481b7", "parents": [ "8901e7ffc2fa78ede7ce9826dbad68a3a25dc2dc", "645dae969c3b8651c5bc7c54a1835ec03820f85f" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Apr 05 11:04:19 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Apr 05 11:04:19 2009 -0700" }, "message": "Merge branch \u0027tracing-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027tracing-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (413 commits)\n tracing, net: fix net tree and tracing tree merge interaction\n tracing, powerpc: fix powerpc tree and tracing tree interaction\n ring-buffer: do not remove reader page from list on ring buffer free\n function-graph: allow unregistering twice\n trace: make argument \u0027mem\u0027 of trace_seq_putmem() const\n tracing: add missing \u0027extern\u0027 keywords to trace_output.h\n tracing: provide trace_seq_reserve()\n blktrace: print out BLK_TN_MESSAGE properly\n blktrace: extract duplidate code\n blktrace: fix memory leak when freeing struct blk_io_trace\n blktrace: fix blk_probes_ref chaos\n blktrace: make classic output more classic\n blktrace: fix off-by-one bug\n blktrace: fix the original blktrace\n blktrace: fix a race when creating blk_tree_root in debugfs\n blktrace: fix timestamp in binary output\n tracing, Text Edit Lock: cleanup\n tracing: filter fix for TRACE_EVENT_FORMAT events\n ftrace: Using FTRACE_WARN_ON() to check \"freed record\" in ftrace_release()\n x86: kretprobe-booster interrupt emulation code fix\n ...\n\nFix up trivial conflicts in\n arch/parisc/include/asm/ftrace.h\n include/linux/memory.h\n kernel/extable.c\n kernel/module.c\n" }, { "commit": "90975ef71246c5c688ead04e8ff6f36dc92d28b3", "tree": "eda44b2efe91509719b0e62219c2efec13a9e762", "parents": [ "cab4e4c43f92582a2bfc026137b3d8a175bd0360", "558f6ab9106e6be701acb0257e7171df1bbccf04" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Apr 05 10:33:07 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Apr 05 10:33:07 2009 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask: (36 commits)\n cpumask: remove cpumask allocation from idle_balance, fix\n numa, cpumask: move numa_node_id default implementation to topology.h, fix\n cpumask: remove cpumask allocation from idle_balance\n x86: cpumask: x86 mmio-mod.c use cpumask_var_t for downed_cpus\n x86: cpumask: update 32-bit APM not to mug current-\u003ecpus_allowed\n x86: microcode: cleanup\n x86: cpumask: use work_on_cpu in arch/x86/kernel/microcode_core.c\n cpumask: fix CONFIG_CPUMASK_OFFSTACK\u003dy cpu hotunplug crash\n numa, cpumask: move numa_node_id default implementation to topology.h\n cpumask: convert node_to_cpumask_map[] to cpumask_var_t\n cpumask: remove x86 cpumask_t uses.\n cpumask: use cpumask_var_t in uv_flush_tlb_others.\n cpumask: remove cpumask_t assignment from vector_allocation_domain()\n cpumask: make Xen use the new operators.\n cpumask: clean up summit\u0027s send_IPI functions\n cpumask: use new cpumask functions throughout x86\n x86: unify cpu_callin_mask/cpu_callout_mask/cpu_initialized_mask/cpu_sibling_setup_mask\n cpumask: convert struct cpuinfo_x86\u0027s llc_shared_map to cpumask_var_t\n cpumask: convert node_to_cpumask_map[] to cpumask_var_t\n x86: unify 32 and 64-bit node_to_cpumask_map\n ...\n" }, { "commit": "b1dbb67911fecb290db3f566281bcd9ccc9dc6df", "tree": "f55add06f624f7fed8a68372d8c96b583ca578fe", "parents": [ "492f59f526d95e73028f57bff475b4bbe3c8cb72", "70f454408e68fdba2c2529ab7d6ec3c3525e59f2" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Apr 03 17:33:30 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Apr 03 17:33:30 2009 -0700" }, "message": "Merge branch \u0027ipi-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027ipi-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n s390: remove arch specific smp_send_stop()\n panic: clean up kernel/panic.c\n panic, smp: provide smp_send_stop() wrapper on UP too\n panic: decrease oops_in_progress only after having done the panic\n generic-ipi: eliminate WARN_ON()s during oops/panic\n generic-ipi: cleanups\n generic-ipi: remove CSD_FLAG_WAIT\n generic-ipi: remove kmalloc()\n generic IPI: simplify barriers and locking\n" }, { "commit": "8302294f43250dc337108c51882a6007f2b1e2e0", "tree": "85acd4440799c46a372df9cad170fa0c21e59096", "parents": [ "4fe70410d9a219dabb47328effccae7e7f2a6e26", "2e572895bf3203e881356a4039ab0fa428ed2639" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Apr 01 21:54:19 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Apr 02 00:49:02 2009 +0200" }, "message": "Merge branch \u0027tracing/core-v2\u0027 into tracing-for-linus\n\nConflicts:\n\tinclude/linux/slub_def.h\n\tlib/Kconfig.debug\n\tmm/slob.c\n\tmm/slub.c\n" }, { "commit": "4ede816ac36e027db5fe0051ad9c73f76db63772", "tree": "6c79eae26067c2355a2d4c7e65bca84208a76c40", "parents": [ "bcd0b235bf3808dec5115c381cd55568f63b85f0" ], "author": { "name": "Davide Libenzi", "email": "davidel@xmailserver.org", "time": "Tue Mar 31 15:24:20 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Apr 01 08:59:20 2009 -0700" }, "message": "epoll keyed wakeups: add __wake_up_locked_key() and __wake_up_sync_key()\n\nThis patchset introduces wakeup hints for some of the most popular (from\nepoll POV) devices, so that epoll code can avoid spurious wakeups on its\nwaiters.\n\nThe problem with epoll is that the callback-based wakeups do not, ATM,\ncarry any information about the events the wakeup is related to. So the\nonly choice epoll has (not being able to call f_op-\u003epoll() from inside the\ncallback), is to add the file* to a ready-list and resolve the real events\nlater on, at epoll_wait() (or its own f_op-\u003epoll()) time. This can cause\nspurious wakeups, since the wake_up() itself might be for an event the\ncaller is not interested into.\n\nThe rate of these spurious wakeup can be pretty high in case of many\nnetwork sockets being monitored.\n\nBy allowing devices to report the events the wakeups refer to (at least\nthe two major classes - POLLIN/POLLOUT), we are able to spare useless\nwakeups by proper handling inside the epoll\u0027s poll callback.\n\nEpoll will have in any case to call f_op-\u003epoll() on the file* later on,\nsince the change to be done in order to have the full event set sent via\nwakeup, is too invasive for the way our f_op-\u003epoll() system works (the\nfull event set is calculated inside the poll function - there are too many\nof them to even start thinking the change - also poll/select would need\nchange too).\n\nEpoll is changed in a way that both devices which send event hints, and\nthe ones that don\u0027t, are correctly handled. The former will gain some\nefficiency though.\n\nAs a general rule for devices, would be to add an event mask by using\nkey-aware wakeup macros, when making up poll wait queues. I tested it\n(together with the epoll\u0027s poll fix patch Andrew has in -mm) and wakeups\nfor the supported devices are correctly filtered.\n\nTest program available here:\n\nhttp://www.xmailserver.org/epoll_test.c\n\nThis patch:\n\nNothing revolutionary here. Just using the available \"key\" that our\nwakeup core already support. The __wake_up_locked_key() was no brainer,\nsince both __wake_up_locked() and __wake_up_locked_key() are thin wrappers\naround __wake_up_common().\n\nThe __wake_up_sync() function had a body, so the choice was between\nborrowing the body for __wake_up_sync_key() and calling it from\n__wake_up_sync(), or make an inline and calling it from both. I chose the\nformer since in most archs it all resolves to \"mov $0, REG; jmp ADDR\".\n\nSigned-off-by: Davide Libenzi \u003cdavidel@xmailserver.org\u003e\nCc: Alan Cox \u003calan@lxorguk.ukuu.org.uk\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: David Miller \u003cdavem@davemloft.net\u003e\nCc: William Lee Irwin III \u003cwli@movementarian.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "46e0bb9c12f4bab539736f1714cbf16600f681ec", "tree": "755769f792c6b59eadfdda02b6a64166bf0ca8d8", "parents": [ "ef12fefabf94b6a902ad3abd3eb124b00560c445" ], "author": { "name": "Gautham R Shenoy", "email": "ego@in.ibm.com", "time": "Mon Mar 30 10:25:20 2009 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Apr 01 17:58:03 2009 +0200" }, "message": "sched: Print sched_group::__cpu_power in sched_domain_debug\n\nImpact: extend debug info /proc/sched_debug\n\nIf the user changes the value of the sched_mc/smt_power_savings sysfs\ntunable, it\u0027ll trigger a rebuilding of the whole sched_domain tree,\nwith the SD_POWERSAVINGS_BALANCE flag set at certain levels.\n\nAs a result, there would be a change in the __cpu_power of sched_groups\nin the sched_domain hierarchy.\n\nPrint the __cpu_power values for each sched_group in sched_domain_debug\nto help verify this change and correlate it with the change in the\nload-balancing behavior.\n\nSigned-off-by: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: \u003c20090330045520.2869.24777.stgit@sofia.in.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "ef12fefabf94b6a902ad3abd3eb124b00560c445", "tree": "07a23161b84b11379691ab36e6c44464d801b9ac", "parents": [ "c5f8d99585d7b5b7e857fabf8aefd0174903a98c" ], "author": { "name": "Bharata B Rao", "email": "bharata@linux.vnet.ibm.com", "time": "Tue Mar 31 10:02:22 2009 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Apr 01 16:49:38 2009 +0200" }, "message": "cpuacct: add per-cgroup utime/stime statistics\n\nAdd per-cgroup cpuacct controller statistics like the system and user\ntime consumed by the group of tasks.\n\nChangelog:\n\nv7\n- Changed the name of the statistic from utime to user and from stime to\n system so that in future we could easily add other statistics like irq,\n softirq, steal times etc easily.\n\nv6\n- Fixed a bug in the error path of cpuacct_create() (pointed by Li Zefan).\n\nv5\n- In cpuacct_stats_show(), use cputime64_to_clock_t() since we are\n operating on a 64bit variable here.\n\nv4\n- Remove comments in cpuacct_update_stats() which explained why rcu_read_lock()\n was needed (as per Peter Zijlstra\u0027s review comments).\n- Don\u0027t say that percpu_counter_read() is broken in Documentation/cpuacct.txt\n as per KAMEZAWA Hiroyuki\u0027s review comments.\n\nv3\n- Fix a small race in the cpuacct hierarchy walk.\n\nv2\n- stime and utime now exported in clock_t units instead of msecs.\n- Addressed the code review comments from Balbir and Li Zefan.\n- Moved to -tip tree.\n\nv1\n- Moved the stime/utime accounting to cpuacct controller.\n\nEarlier versions\n- http://lkml.org/lkml/2009/2/25/129\n\nSigned-off-by: Bharata B Rao \u003cbharata@linux.vnet.ibm.com\u003e\nSigned-off-by: Balaji Rao \u003cbalajirrao@gmail.com\u003e\nCc: Dhaval Giani \u003cdhaval@linux.vnet.ibm.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nReviewed-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nTested-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nLKML-Reference: \u003c20090331043222.GA4093@in.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "c5f8d99585d7b5b7e857fabf8aefd0174903a98c", "tree": "504127a7d4b6a0e3aee56d0822e5e8b23f8062d7", "parents": [ "13b8bd0a5713bdf05659019badd7c0407984ece1" ], "author": { "name": "Hidetoshi Seto", "email": "seto.hidetoshi@jp.fujitsu.com", "time": "Tue Mar 31 16:56:03 2009 +0900" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Apr 01 16:44:16 2009 +0200" }, "message": "posixtimers, sched: Fix posix clock monotonicity\n\nImpact: Regression fix (against clock_gettime() backwarding bug)\n\nThis patch re-introduces a couple of functions, task_sched_runtime\nand thread_group_sched_runtime, which was once removed at the\ntime of 2.6.28-rc1.\n\nThese functions protect the sampling of thread/process clock with\nrq lock. This rq lock is required not to update rq-\u003eclock during\nthe sampling.\n\ni.e.\n The clock_gettime() may return\n ((accounted runtime before update) + (delta after update))\n that is less than what it should be.\n\nv2 -\u003e v3:\n\t- Rename static helper function __task_delta_exec()\n\t to do_task_delta_exec() since -tip tree already has\n\t a __task_delta_exec() of different version.\n\nv1 -\u003e v2:\n\t- Revises comments of function and patch description.\n\t- Add note about accuracy of thread group\u0027s runtime.\n\nSigned-off-by: Hidetoshi Seto \u003cseto.hidetoshi@jp.fujitsu.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: stable@kernel.org\t[2.6.28.x][2.6.29.x]\nLKML-Reference: \u003c49D1CC93.4080401@jp.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "a18b83b7ef3c98cd8b4bb885e4a649a8f30fb7b0", "tree": "4e93447c0099672e2bedbc4374007a42f105e132", "parents": [ "2f8501815256af8498904e68bd0984b1afffd6f8" ], "author": { "name": "Bharata B Rao", "email": "bharata@linux.vnet.ibm.com", "time": "Mon Mar 23 10:02:53 2009 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Mar 31 18:27:59 2009 +0200" }, "message": "cpuacct: make cpuacct hierarchy walk in cpuacct_charge() safe when rcupreempt is used -v2\n\nImpact: fix cgroups race under rcu-preempt\n\ncpuacct_charge() obtains task\u0027s ca and does a hierarchy walk upwards.\nThis can race with the task\u0027s movement between cgroups. This race\ncan cause an access to freed ca pointer in cpuacct_charge() or access\nto invalid cgroups pointer of the task. This will not happen with rcu or\ntree rcu as cpuacct_charge() is called with preemption disabled. However if\nrcupreempt is used, the race is seen. Thanks to Li Zefan for explaining this.\n\nFix this race by explicitly protecting ca and the hierarchy walk with\nrcu_read_lock().\n\nChanges for v2:\n\n - Update patch descrition (as per Li Zefan\u0027s review comments).\n\n - Remove comments in cpuacct_charge() which explained why rcu_read_lock()\n was needed (as per Peter Zijlstra\u0027s review comments).\n\nSigned-off-by: Bharata B Rao \u003cbharata@linux.vnet.ibm.com\u003e\nCc: Dhaval Giani \u003cdhaval@linux.vnet.ibm.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nTested-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "7f1e2ca9f04b02794597f60e7b1d43f0a1317939", "tree": "dad1d80ab4232f3ca12d7ff9a58f0dc76133dab1", "parents": [ "7bee946358c3cb957d4aa648fc5ab3cad0b232d0" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Fri Mar 13 12:21:27 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Mar 31 14:52:52 2009 +0200" }, "message": "hrtimer: fix rq-\u003elock inversion (again)\n\nIt appears I inadvertly introduced rq-\u003elock recursion to the\nhrtimer_start() path when I delegated running already expired\ntimers to softirq context.\n\nThis patch fixes it by introducing a __hrtimer_start_range_ns()\nmethod that will not use raise_softirq_irqoff() but\n__raise_softirq_irqoff() which avoids the wakeup.\n\nIt then also changes schedule() to check for pending softirqs and\ndo the wakeup then, I\u0027m not quite sure I like this last bit, nor\nam I convinced its really needed.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: paulus@samba.org\nLKML-Reference: \u003c20090313112301.096138802@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "558f6ab9106e6be701acb0257e7171df1bbccf04", "tree": "6e811633baeb676693c493f6c82bf785cab2771d", "parents": [ "15f7176eb1cccec0a332541285ee752b935c1c85", "65fb0d23fcddd8697c871047b700c78817bdaa43" ], "author": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Tue Mar 31 13:33:50 2009 +1030" }, "committer": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Tue Mar 31 13:33:50 2009 +1030" }, "message": "Merge branch \u0027cpumask-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\nConflicts:\n\n\tarch/x86/include/asm/topology.h\n\tdrivers/oprofile/buffer_sync.c\n(Both cases: changed in Linus\u0027 tree, removed in Ingo\u0027s).\n" }, { "commit": "c4e1aa67ed9e4e542a064bc271ddbf152b677e91", "tree": "2a2ca00bed0fc22b4eb83db092c9178868d8f76b", "parents": [ "cf2f7d7c90279cdbc12429de278f3d27ac2050ae", "2f8501815256af8498904e68bd0984b1afffd6f8" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Mar 30 17:17:35 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Mar 30 17:17:35 2009 -0700" }, "message": "Merge branch \u0027locking-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027locking-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (33 commits)\n lockdep: fix deadlock in lockdep_trace_alloc\n lockdep: annotate reclaim context (__GFP_NOFS), fix SLOB\n lockdep: annotate reclaim context (__GFP_NOFS), fix\n lockdep: build fix for !PROVE_LOCKING\n lockstat: warn about disabled lock debugging\n lockdep: use stringify.h\n lockdep: simplify check_prev_add_irq()\n lockdep: get_user_chars() redo\n lockdep: simplify get_user_chars()\n lockdep: add comments to mark_lock_irq()\n lockdep: remove macro usage from mark_held_locks()\n lockdep: fully reduce mark_lock_irq()\n lockdep: merge the !_READ mark_lock_irq() helpers\n lockdep: merge the _READ mark_lock_irq() helpers\n lockdep: simplify mark_lock_irq() helpers #3\n lockdep: further simplify mark_lock_irq() helpers\n lockdep: simplify the mark_lock_irq() helpers\n lockdep: split up mark_lock_irq()\n lockdep: generate usage strings\n lockdep: generate the state bit definitions\n ...\n" }, { "commit": "65fb0d23fcddd8697c871047b700c78817bdaa43", "tree": "119e6e5f276622c4c862f6c9b6d795264ba1603a", "parents": [ "8c083f081d0014057901c68a0a3e0f8ca7ac8d23", "dfbbe89e197a77f2c8046a51c74e33e35f878080" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Mar 30 23:53:32 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Mar 30 23:53:32 2009 +0200" }, "message": "Merge branch \u0027linus\u0027 into cpumask-for-linus\n\nConflicts:\n\tarch/x86/kernel/cpu/common.c\n" }, { "commit": "224101ed69d3fbb486868e0f6e0f9fa37302efb4", "tree": "46830842a99659421eeabee65d299ab4c3b59f28", "parents": [ "b407fc57b815b2016186220baabc76cc8264206e" ], "author": { "name": "Jeremy Fitzhardinge", "email": "jeremy.fitzhardinge@citrix.com", "time": "Wed Feb 18 11:18:57 2009 -0800" }, "committer": { "name": "Jeremy Fitzhardinge", "email": "jeremy.fitzhardinge@citrix.com", "time": "Sun Mar 29 23:36:01 2009 -0700" }, "message": "x86/paravirt: finish change from lazy cpu to context switch start/end\n\nImpact: fix lazy context switch API\n\nPass the previous and next tasks into the context switch start\nend calls, so that the called functions can properly access the\ntask state (esp in end_context_switch, in which the next task\nis not yet completely current).\n\nSigned-off-by: Jeremy Fitzhardinge \u003cjeremy.fitzhardinge@citrix.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\n" }, { "commit": "7fd7d83d49914f03aefffba6aee09032fcd54cce", "tree": "8c9f5b95f6b63b5d28887f47d92a6c79139eac5f", "parents": [ "b8bcfe997e46150fedcc3f5b26b846400122fdd9" ], "author": { "name": "Jeremy Fitzhardinge", "email": "jeremy.fitzhardinge@citrix.com", "time": "Tue Feb 17 23:24:03 2009 -0800" }, "committer": { "name": "Jeremy Fitzhardinge", "email": "jeremy.fitzhardinge@citrix.com", "time": "Sun Mar 29 23:35:59 2009 -0700" }, "message": "x86/pvops: replace arch_enter_lazy_cpu_mode with arch_start_context_switch\n\nImpact: simplification, prepare for later changes\n\nMake lazy cpu mode more specific to context switching, so that\nit makes sense to do more context-switch specific things in\nthe callbacks.\n\nSigned-off-by: Jeremy Fitzhardinge \u003cjeremy.fitzhardinge@citrix.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\n" }, { "commit": "d5ac537e5fb6fc12384c9f3ed6a15e912dfbbc2a", "tree": "0b86a19d2e54558ac99ed5e1bb287cf22505b21a", "parents": [ "ee665ecca6d6775f65b1a4154c34f551f62cec52" ], "author": { "name": "Randy Dunlap", "email": "randy.dunlap@oracle.com", "time": "Sat Mar 28 21:52:47 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Mar 29 08:12:39 2009 -0700" }, "message": "sched: fix errors in struct \u0026 function comments\n\nFix kernel-doc errors in sched.c: the structs don\u0027t have\nkernel-doc notation and the short function description needs to\nbe one line only.\n\n Error(kernel/sched.c:3197): cannot understand prototype: \u0027struct sd_lb_stats \u0027\n Error(kernel/sched.c:3228): cannot understand prototype: \u0027struct sg_lb_stats \u0027\n Error(kernel/sched.c:3375): duplicate section name \u0027Description\u0027\n\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\ncc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6e15cf04860074ad032e88c306bea656bbdd0f22", "tree": "c346383bb7563e8d66b2f4a502f875b259c34870", "parents": [ "be0ea69674ed95e1e98cb3687a241badc756d228", "60db56422043aaa455ac7f858ce23c273220f9d9" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Mar 26 21:39:17 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 27 17:28:43 2009 +0100" }, "message": "Merge branch \u0027core/percpu\u0027 into percpu-cpumask-x86-for-linus-2\n\nConflicts:\n\tarch/parisc/kernel/irq.c\n\tarch/x86/include/asm/fixmap_64.h\n\tarch/x86/include/asm/setup.h\n\tkernel/irq/handle.c\n\nSemantic merge:\n arch/x86/include/asm/fixmap.h\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "b7bb4c9bb01941fe8feb653f3410e7ed0c9bb786", "tree": "ee6fb1ce3354c8a06c7c1b08b2c386aaebf07a33", "parents": [ "c071df18525a95b37dd5821a6dc4af83bd18675e" ], "author": { "name": "Gautham R Shenoy", "email": "ego@in.ibm.com", "time": "Wed Mar 25 14:44:27 2009 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 25 13:28:30 2009 +0100" }, "message": "sched: Add comments to find_busiest_group() function\n\nImpact: cleanup\n\nAdd /** style comments around find_busiest_group(). Also add a few\nexplanatory comments.\n\nThis concludes the find_busiest_group() cleanup. The function is\nnow down to 72 lines from the original 313 lines.\n\nSigned-off-by: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nCc: \"Balbir Singh\" \u003cbalbir@in.ibm.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: \"Dhaval Giani\" \u003cdhaval@linux.vnet.ibm.com\u003e\nCc: Bharata B Rao \u003cbharata@linux.vnet.ibm.com\u003e\nCc: \"Vaidyanathan Srinivasan\" \u003csvaidy@linux.vnet.ibm.com\u003e\nLKML-Reference: \u003c20090325091427.13992.18933.stgit@sofia.in.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "c071df18525a95b37dd5821a6dc4af83bd18675e", "tree": "3b5a3761ed296465ed5f7b4669e74ec92203de78", "parents": [ "a021dc03376707c55a3483e32c16b8986d4414cc" ], "author": { "name": "Gautham R Shenoy", "email": "ego@in.ibm.com", "time": "Wed Mar 25 14:44:22 2009 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 25 10:30:48 2009 +0100" }, "message": "sched: Refactor the power savings balance code\n\nImpact: cleanup\n\nCreate seperate helper functions to initialize the\npower-savings-balance related variables, to update them and\nto check if we have a scope for performing power-savings balance.\n\nAdd no-op inline functions for the !(CONFIG_SCHED_MC || CONFIG_SCHED_SMT)\ncase.\n\nThis will eliminate all the #ifdef jungle in find_busiest_group() and the\nother helper functions.\n\nSigned-off-by: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nCc: \"Balbir Singh\" \u003cbalbir@in.ibm.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: \"Dhaval Giani\" \u003cdhaval@linux.vnet.ibm.com\u003e\nCc: Bharata B Rao \u003cbharata@linux.vnet.ibm.com\u003e\nCc: \"Vaidyanathan Srinivasan\" \u003csvaidy@linux.vnet.ibm.com\u003e\nLKML-Reference: \u003c20090325091422.13992.73616.stgit@sofia.in.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "a021dc03376707c55a3483e32c16b8986d4414cc", "tree": "a3d29953e30b8874e7191d29dc50c59f9ac4c809", "parents": [ "dbc523a3b86f9e1765b5e70e6886913b99cc5cec" ], "author": { "name": "Gautham R Shenoy", "email": "ego@in.ibm.com", "time": "Wed Mar 25 14:44:17 2009 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 25 10:30:48 2009 +0100" }, "message": "sched: Optimize the !power_savings_balance during fbg()\n\nImpact: cleanup, micro-optimization\n\nWe don\u0027t need to perform power_savings balance if either the\ncpu is NOT_IDLE or if the sched_domain doesn\u0027t contain the\nSD_POWERSAVINGS_BALANCE flag set.\n\nCurrently, we check for these conditions multiple number of\ntimes, even though these variables don\u0027t change over the scope\nof find_busiest_group().\n\nCheck once, and store the value in the already exiting\n\"power_savings_balance\" variable.\n\nSigned-off-by: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nCc: \"Balbir Singh\" \u003cbalbir@in.ibm.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: \"Dhaval Giani\" \u003cdhaval@linux.vnet.ibm.com\u003e\nCc: Bharata B Rao \u003cbharata@linux.vnet.ibm.com\u003e\nCc: \"Vaidyanathan Srinivasan\" \u003csvaidy@linux.vnet.ibm.com\u003e\nLKML-Reference: \u003c20090325091417.13992.2657.stgit@sofia.in.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "dbc523a3b86f9e1765b5e70e6886913b99cc5cec", "tree": "74e735ebf9ad70f4b204336eee333e4024fc9a9f", "parents": [ "2e6f44aeda426054fc58464df1ad571aecca0c92" ], "author": { "name": "Gautham R Shenoy", "email": "ego@in.ibm.com", "time": "Wed Mar 25 14:44:12 2009 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 25 10:30:47 2009 +0100" }, "message": "sched: Create a helper function to calculate imbalance\n\nMove all the imbalance calculation out of find_busiest_group()\nthrough this helper function.\n\nWith this change, the structure of find_busiest_group() will be\nas follows:\n\n- update_sched_domain_statistics.\n\n- check if imbalance exits.\n\n- update imbalance and return busiest.\n\nSigned-off-by: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nCc: \"Balbir Singh\" \u003cbalbir@in.ibm.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: \"Dhaval Giani\" \u003cdhaval@linux.vnet.ibm.com\u003e\nCc: Bharata B Rao \u003cbharata@linux.vnet.ibm.com\u003e\nCc: \"Vaidyanathan Srinivasan\" \u003csvaidy@linux.vnet.ibm.com\u003e\nLKML-Reference: \u003c20090325091411.13992.43293.stgit@sofia.in.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "2e6f44aeda426054fc58464df1ad571aecca0c92", "tree": "eb6f6788ac6f0ac6c71e82f7741ed8f830c3b2b4", "parents": [ "37abe198b1246ddd206319c43502a687db62d347" ], "author": { "name": "Gautham R Shenoy", "email": "ego@in.ibm.com", "time": "Wed Mar 25 14:44:06 2009 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 25 10:30:47 2009 +0100" }, "message": "sched: Create helper to calculate small_imbalance in fbg()\n\nImpact: cleanup\n\nWe have two places in find_busiest_group() where we need to calculate\nthe minor imbalance before returning the busiest group. Encapsulate\nthis functionality into a seperate helper function.\n\nCredit: Vaidyanathan Srinivasan \u003csvaidy@linux.vnet.ibm.com\u003e\nSigned-off-by: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nCc: \"Balbir Singh\" \u003cbalbir@in.ibm.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: \"Dhaval Giani\" \u003cdhaval@linux.vnet.ibm.com\u003e\nCc: Bharata B Rao \u003cbharata@linux.vnet.ibm.com\u003e\nLKML-Reference: \u003c20090325091406.13992.54316.stgit@sofia.in.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "37abe198b1246ddd206319c43502a687db62d347", "tree": "8289ef7751b393fe90ba39c4576d93fe57059381", "parents": [ "222d656dea57e4e084fbd1e9383e6fed2ca9fa61" ], "author": { "name": "Gautham R Shenoy", "email": "ego@in.ibm.com", "time": "Wed Mar 25 14:44:01 2009 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 25 10:30:46 2009 +0100" }, "message": "sched: Create a helper function to calculate sched_domain stats for fbg()\n\nImpact: cleanup\n\nCreate a helper function named update_sd_lb_stats() to update the\nvarious sched_domain related statistics in find_busiest_group().\n\nWith this we would have moved all the statistics computation out of\nfind_busiest_group().\n\nCredit: Vaidyanathan Srinivasan \u003csvaidy@linux.vnet.ibm.com\u003e\nSigned-off-by: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nCc: \"Balbir Singh\" \u003cbalbir@in.ibm.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: \"Dhaval Giani\" \u003cdhaval@linux.vnet.ibm.com\u003e\nCc: Bharata B Rao \u003cbharata@linux.vnet.ibm.com\u003e\nLKML-Reference: \u003c20090325091401.13992.88737.stgit@sofia.in.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "222d656dea57e4e084fbd1e9383e6fed2ca9fa61", "tree": "eb5f5be4312e050c28ba9b80dc9d0e113e711190", "parents": [ "1f8c553d0f11d85f7993fe21015695d266771c00" ], "author": { "name": "Gautham R Shenoy", "email": "ego@in.ibm.com", "time": "Wed Mar 25 14:43:56 2009 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 25 10:30:46 2009 +0100" }, "message": "sched: Define structure to store the sched_domain statistics for fbg()\n\nImpact: cleanup\n\nCurrently we use a lot of local variables in find_busiest_group()\nto capture the various statistics related to the sched_domain.\nGroup them together into a single data structure.\n\nThis will help us to offload the job of updating the sched_domain\nstatistics to a helper function.\n\nCredit: Vaidyanathan Srinivasan \u003csvaidy@linux.vnet.ibm.com\u003e\nSigned-off-by: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nCc: \"Balbir Singh\" \u003cbalbir@in.ibm.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: \"Dhaval Giani\" \u003cdhaval@linux.vnet.ibm.com\u003e\nCc: Bharata B Rao \u003cbharata@linux.vnet.ibm.com\u003e\nLKML-Reference: \u003c20090325091356.13992.25970.stgit@sofia.in.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "1f8c553d0f11d85f7993fe21015695d266771c00", "tree": "f7444308d28ddab455ccd48f246b628fdb854eaf", "parents": [ "381be78fdc829a22f6327a0ed09f54b6270a976d" ], "author": { "name": "Gautham R Shenoy", "email": "ego@in.ibm.com", "time": "Wed Mar 25 14:43:51 2009 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 25 10:30:45 2009 +0100" }, "message": "sched: Create a helper function to calculate sched_group stats for fbg()\n\nImpact: cleanup\n\nCreate a helper function named update_sg_lb_stats() which\ncan be invoked to calculate the individual group\u0027s statistics\nin find_busiest_group().\n\nThis reduces the lenght of find_busiest_group() considerably.\n\nCredit: Vaidyanathan Srinivasan \u003csvaidy@linux.vnet.ibm.com\u003e\nSigned-off-by: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nAked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nCc: \"Balbir Singh\" \u003cbalbir@in.ibm.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: \"Dhaval Giani\" \u003cdhaval@linux.vnet.ibm.com\u003e\nCc: Bharata B Rao \u003cbharata@linux.vnet.ibm.com\u003e\nLKML-Reference: \u003c20090325091351.13992.43461.stgit@sofia.in.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "381be78fdc829a22f6327a0ed09f54b6270a976d", "tree": "d69536e051f14b67138267dd6010a895cdb5745e", "parents": [ "6dfdb0629019f307ab18864b1fd3e5dbb02f383c" ], "author": { "name": "Gautham R Shenoy", "email": "ego@in.ibm.com", "time": "Wed Mar 25 14:43:46 2009 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 25 10:30:45 2009 +0100" }, "message": "sched: Define structure to store the sched_group statistics for fbg()\n\nImpact: cleanup\n\nCurrently a whole bunch of variables are used to store the\nvarious statistics pertaining to the groups we iterate over\nin find_busiest_group().\n\nGroup them together in a single data structure and add\nappropriate comments.\n\nThis will be useful later on when we create helper functions\nto calculate the sched_group statistics.\n\nCredit: Vaidyanathan Srinivasan \u003csvaidy@linux.vnet.ibm.com\u003e\nSigned-off-by: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nCc: \"Balbir Singh\" \u003cbalbir@in.ibm.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: \"Dhaval Giani\" \u003cdhaval@linux.vnet.ibm.com\u003e\nCc: Bharata B Rao \u003cbharata@linux.vnet.ibm.com\u003e\nLKML-Reference: \u003c20090325091345.13992.20099.stgit@sofia.in.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "6dfdb0629019f307ab18864b1fd3e5dbb02f383c", "tree": "bb5f0e9b59998961d71d226ff46c162694691a7d", "parents": [ "67bb6c036d1fc3d332c8527a36a546e3e72e822c" ], "author": { "name": "Gautham R Shenoy", "email": "ego@in.ibm.com", "time": "Wed Mar 25 14:43:40 2009 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 25 10:30:44 2009 +0100" }, "message": "sched: Fix indentations in find_busiest_group() using gotos\n\nImpact: cleanup\n\nSome indentations in find_busiest_group() can minimized by using\nearly exits with the help of gotos. This improves readability in\na couple of cases.\n\nSigned-off-by: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nCc: \"Balbir Singh\" \u003cbalbir@in.ibm.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: \"Dhaval Giani\" \u003cdhaval@linux.vnet.ibm.com\u003e\nCc: Bharata B Rao \u003cbharata@linux.vnet.ibm.com\u003e\nCc: \"Vaidyanathan Srinivasan\" \u003csvaidy@linux.vnet.ibm.com\u003e\nLKML-Reference: \u003c20090325091340.13992.45062.stgit@sofia.in.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "67bb6c036d1fc3d332c8527a36a546e3e72e822c", "tree": "677795ae954a6fec174c8218e59d8301dc7f1a8a", "parents": [ "b6d9842258d1ba27fb978cded74eb4b6aa15edc8" ], "author": { "name": "Gautham R Shenoy", "email": "ego@in.ibm.com", "time": "Wed Mar 25 14:43:35 2009 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 25 10:30:44 2009 +0100" }, "message": "sched: Simple helper functions for find_busiest_group()\n\nImpact: cleanup\n\nCurrently the load idx calculation code is in find_busiest_group().\nMove that to a static inline helper function.\n\nSimilary, to find the first cpu of a sched_group we use\ncpumask_first(sched_group_cpus(group))\n\nUse a helper to that. It improves readability in some cases.\n\nSigned-off-by: Gautham R Shenoy \u003cego@in.ibm.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nCc: \"Balbir Singh\" \u003cbalbir@in.ibm.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: \"Dhaval Giani\" \u003cdhaval@linux.vnet.ibm.com\u003e\nCc: Bharata B Rao \u003cbharata@linux.vnet.ibm.com\u003e\nCc: \"Vaidyanathan Srinivasan\" \u003csvaidy@linux.vnet.ibm.com\u003e\nLKML-Reference: \u003c20090325091335.13992.55424.stgit@sofia.in.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "67aa0f767af488a7f1e41cccb4f7a4893f24a1ab", "tree": "7852ed82045798af8881f486b175c11512dd1437", "parents": [ "efd247fa34084d9b162f485004ae6d8a04059f0c" ], "author": { "name": "Luis Henriques", "email": "henrix@sapo.pt", "time": "Tue Mar 24 22:10:02 2009 +0000" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Mar 24 23:16:51 2009 +0100" }, "message": "sched: remove unused fields from struct rq\n\nImpact: cleanup, new schedstat ABI\n\nSince they are used on in statistics and are always set to zero, the\nfollowing fields from struct rq have been removed: yld_exp_empty,\nyld_act_empty and yld_both_empty.\n\nBoth Sched Debug and SCHEDSTAT_VERSION versions has also been\nincremented since ABIs have been changed.\n\nThe schedtop tool has been updated to properly handle new version of\nschedstat:\n\n http://rt.wiki.kernel.org/index.php/Schedtop_utility\n\nSigned-off-by: Luis Henriques \u003chenrix@sapo.pt\u003e\nAcked-by: Gregory Haskins \u003cghaskins@novell.com\u003e\nAcked-by: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nLKML-Reference: \u003c20090324221002.GA10061@hades.domain.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "8c083f081d0014057901c68a0a3e0f8ca7ac8d23", "tree": "59203b4876eaca93a6f5f1d62e711bda35ff35c8", "parents": [ "17ad6ea621b1c7952ebd7330ce65de26b6ee9cca" ], "author": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Thu Mar 19 15:22:20 2009 +1030" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Mar 19 13:49:44 2009 +0100" }, "message": "cpumask: remove cpumask allocation from idle_balance, fix\n\nImpact: fix boot crash\n\nFix typo in the size calculation.\n\nReported-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nLKML-Reference: \u003calpine.DEB.2.00.0903181729360.31583@gandalf.stny.rr.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "df7c8e845e8e2030e8ae947e0ace56d184d0e9a0", "tree": "15f68e17f2efaf853ffc8f3ba03bca37d847a32b", "parents": [ "c38da5692e3a4d5d303c04cbf7e526f1eb761076" ], "author": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Thu Mar 19 15:22:20 2009 +1030" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Mar 19 08:15:15 2009 +0100" }, "message": "cpumask: remove cpumask allocation from idle_balance\n\nImpact: fix circular locking\n\nSteven reports a circular locking from alloc_cpumask_var doing\na wakeup. We get rid of this using the tried-and-true technique\nof using a per-cpu cpumask_var_t rather than doing an alloc\nevery time.\n\nSimpler and more robust than a rare, implicit allocation within\nan atomic codepath.\n\nReported-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nLKML-Reference: \u003calpine.DEB.2.00.0903181729360.31583@gandalf.stny.rr.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "708dc5125309cd33c5daaad3026cc4ae6ef39c8b", "tree": "7a99f6b210ebba4b42123a933345e464e3052eef", "parents": [ "80dd99b368cf6501be88ab517bbbb5bf352b75b8" ], "author": { "name": "Luis Henriques", "email": "henrix@sapo.pt", "time": "Mon Mar 16 19:59:02 2009 +0000" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Mar 17 12:04:41 2009 +0100" }, "message": "sched: small optimisation of can_migrate_task()\n\nThere were 3 invocations of task_hot() in can_migrate_task().\n\nReplace these 3 invocations by only one invocation, cached in\na local variable.\n\nSigned-off-by: Luis Henriques \u003chenrix@sapo.pt\u003e\nLKML-Reference: \u003c20090316195902.GA6197@hades.domain.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "80dd99b368cf6501be88ab517bbbb5bf352b75b8", "tree": "f39c4babfd1c8d58526aefa932fb47696c617ac0", "parents": [ "f6411fe7e09b67470a2569231d6fa566c7c29b8b" ], "author": { "name": "Luis Henriques", "email": "henrix@sapo.pt", "time": "Mon Mar 16 19:58:09 2009 +0000" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Mar 17 12:04:40 2009 +0100" }, "message": "sched: fix typos in documentation\n\nFixed typos in function documentation.\n\nSigned-off-by: Luis Henriques \u003chenrix@sapo.pt\u003e\nLKML-Reference: \u003c20090316195809.GA6073@hades.domain.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "cd80a8142efa3468c2cd9fb52845f334c3220d54", "tree": "919e88994bd3c09b34ce852d0a09bb0655d231d0", "parents": [ "641cd4cfcdc71ce01535b31cc4d57d59a1fae1fc", "a98fe7f3425c6b4e90de16f8da63b0429a8fed08" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 13 11:05:58 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 13 11:05:58 2009 +0100" }, "message": "Merge branch \u0027x86/core\u0027 into core/ipi\n" }, { "commit": "c69fc56de1df5769f2ec69c915c7ad5afe63804c", "tree": "18cc8d2ad5d6643edf8b73a3a7d26c55b2125d25", "parents": [ "d95c3578120e5bc4784069439f00ccb1b5f87717" ], "author": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Fri Mar 13 14:49:46 2009 +1030" }, "committer": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Fri Mar 13 14:49:46 2009 +1030" }, "message": "cpumask: use topology_core_cpumask/topology_thread_cpumask instead of cpu_core_map/cpu_sibling_map\n\nImpact: cleanup\n\nThis is presumably what those definitions are for, and while all archs\ndefine cpu_core_map/cpu_sibling map, that\u0027s changing (eg. x86 wants to\nchange it to a pointer).\n\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\n" }, { "commit": "25d500067d5a666d1336598d1b324793554e5496", "tree": "3402308c4c69a66d02ce55f5c165e242fad2a8a9", "parents": [ "0b13fda1e0936b3d64c4c407f183d33fa6bd2ad4", "9ead64974b05501bbac0d63a47c99fa786d064ba" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 13 02:14:25 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 13 02:14:25 2009 +0100" }, "message": "Merge branch \u0027linus\u0027 into core/ipi\n" }, { "commit": "df1c99d416500da8d26a4d78777467c53ee7689e", "tree": "4f61ea769c43bfc985b760649d2c4ba5089ff608", "parents": [ "57310a98a354e84279d7c8af2f48805a62372e53" ], "author": { "name": "Mike Galbraith", "email": "efault@gmx.de", "time": "Tue Mar 10 19:08:11 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 11 11:31:50 2009 +0100" }, "message": "sched: add avg_overlap decay\n\nImpact: more precise avg_overlap metric - better load-balancing\n\navg_overlap is used to measure the runtime overlap of the waker and\nwakee.\n\nHowever, when a process changes behaviour, eg a pipe becomes\nun-congested and we don\u0027t need to go to sleep after a wakeup\nfor a while, the avg_overlap value grows stale.\n\nWhen running we use the avg runtime between preemption as a\nmeasure for avg_overlap since the amount of runtime can be\ncorrelated to cache footprint.\n\nThe longer we run, the less likely we\u0027ll be wanting to be\nmigrated to another CPU.\n\nSigned-off-by: Mike Galbraith \u003cefault@gmx.de\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: \u003c1236709131.25234.576.camel@laptop\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "57310a98a354e84279d7c8af2f48805a62372e53", "tree": "e0027f76f0d48da80f49cf6948de860402572837", "parents": [ "8c54436ae9f59146b3d02820a3ebbf71e61f2aee" ], "author": { "name": "Peter Zijlstra", "email": "peterz@infradead.org", "time": "Mon Mar 09 13:56:21 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Mar 10 16:43:36 2009 +0100" }, "message": "sched: optimize ttwu vs group scheduling\n\nImpact: micro-optimization\n\nWe can avoid the sched domain walk on try_to_wake_up() when we know\nthere are no groups.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: \u003c1236603381.8389.455.camel@laptop\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" } ], "next": "f0ef03985130287c6c84ebe69416cf790e6cc00e" }