)]}' { "log": [ { "commit": "507e123151149e578c9aae33eb876c49824da5f8", "tree": "10b4c36a278553ed3814c0643442e7210a7a1a15", "parents": [ "bfdb4d9f0f611687d71cf6a460efc9e755f4a462" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Tue Jun 23 17:38:15 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jun 24 11:15:09 2009 +0200" }, "message": "timer stats: Optimize by adding quick check to avoid function calls\n\nWhen the kernel is configured with CONFIG_TIMER_STATS but timer\nstats are runtime disabled we still get calls to\n__timer_stats_timer_set_start_info which initializes some\nfields in the corresponding struct timer_list.\n\nSo add some quick checks in the the timer stats setup functions\nto avoid function calls to __timer_stats_timer_set_start_info\nwhen timer stats are disabled.\n\nIn an artificial workload that does nothing but playing ping\npong with a single tcp packet via loopback this decreases cpu\nconsumption by 1 - 1.5%.\n\nThis is part of a modified function trace output on SLES11:\n\n perl-2497 [00] 28630647177732388 [+ 125]: sk_reset_timer \u003c-tcp_v4_rcv\n perl-2497 [00] 28630647177732513 [+ 125]: mod_timer \u003c-sk_reset_timer\n perl-2497 [00] 28630647177732638 [+ 125]: __timer_stats_timer_set_start_info \u003c-mod_timer\n perl-2497 [00] 28630647177732763 [+ 125]: __mod_timer \u003c-mod_timer\n perl-2497 [00] 28630647177732888 [+ 125]: __timer_stats_timer_set_start_info \u003c-__mod_timer\n perl-2497 [00] 28630647177733013 [+ 93]: lock_timer_base \u003c-__mod_timer\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Mustafa Mesanovic \u003cmustafa.mesanovic@de.ibm.com\u003e\nCc: Arjan van de Ven \u003carjan@infradead.org\u003e\nLKML-Reference: \u003c20090623153811.GA4641@osiris.boeblingen.de.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "38df92b8cee936334f686c06df0e5fbb92e252df", "tree": "ffdfd4e5e746300f38a1267b207b293710b3c9a9", "parents": [ "c4c5ab3089c8a794eb0bdaa9794d0f055dd82412", "f2e21c9610991e95621a81407cdbab881226419b" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jun 20 10:51:44 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jun 20 10:51:44 2009 -0700" }, "message": "Merge branch \u0027timers-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027timers-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n NOHZ: Properly feed cpufreq ondemand governor\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": "f9db6e095115f9411b9647bdb9d81fe11f3d8b54", "tree": "243cdffd9c49dffb909d17ec24614d93f527cc8b", "parents": [ "3f27c0d2a469673e0f1efc8004b6f42428aa5b94", "c81fc2c331b8514ad112054cd2d87e6ec132286b" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jun 15 09:58:50 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jun 15 09:58:50 2009 -0700" }, "message": "Merge branch \u0027timers-for-linus-clockevents\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027timers-for-linus-clockevents\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n clockevent: export register_device and delta2ns\n clockevents: tick_broadcast_device can become static\n" }, { "commit": "3f27c0d2a469673e0f1efc8004b6f42428aa5b94", "tree": "548c975cabdcafcac92992d24410ae0a8334dff5", "parents": [ "9aaa630503f20461bee65ebc4fd87ba8d7a2bd2c", "cd6d95d8449b7c9f415f26041e9ae173d387b6bd" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jun 15 09:58:33 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jun 15 09:58:33 2009 -0700" }, "message": "Merge branch \u0027timers-for-linus-clocksource\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027timers-for-linus-clocksource\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n clocksource: prevent selection of low resolution clocksourse also for nohz\u003don\n clocksource: sanity check sysfs clocksource changes\n" }, { "commit": "cd6d95d8449b7c9f415f26041e9ae173d387b6bd", "tree": "ddd1f2d6436f398419045b3e0ee860c01523cfea", "parents": [ "3f68535adad8dd89499505a65fb25d0e02d118cc" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri Jun 12 11:29:27 2009 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Sat Jun 13 12:00:26 2009 +0200" }, "message": "clocksource: prevent selection of low resolution clocksourse also for nohz\u003don\n\ncommit 3f68535adad (clocksource: sanity check sysfs clocksource\nchanges) prevents selection of non high resolution capable\nclocksources when high resolution mode is active, but did not take\ninto account that the same rules apply for highres\u003doff nohz\u003don.\n\nCheck the tick device mode instead of hrtimer_hres_active() to verify\nwhether the system needs to be protected from a switch to jiffies or\nother non highres capable clock sources.\n\nReported-by: Luming Yu \u003cluming.yu@gmail.com\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "3f68535adad8dd89499505a65fb25d0e02d118cc", "tree": "b347c3901d2d590d8c2b8c3be993ef20b278e61f", "parents": [ "7d27558c4138ac6b3684dea35c2f4379b940a7dd" ], "author": { "name": "john stultz", "email": "johnstul@us.ibm.com", "time": "Wed Jan 21 22:53:22 2009 -0700" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Thu Jun 11 11:24:52 2009 +0200" }, "message": "clocksource: sanity check sysfs clocksource changes\n\nThomas, Andrew and Ingo pointed out that we don\u0027t have any safety checks\nin the clocksource sysfs entries to make sure sysadmins don\u0027t try to\nchange the clocksource to a non high-res timer capable clocksource (such\nas jiffies) when high-res timers (HRT) is enabled. Doing so will likely\nhang a system.\n\nCorrect this by filtering non HRT clocksources from available_clocksources\nand not accepting non HRT clocksources with HRT enabled.\n\nSigned-off-by: John Stultz \u003cjohnstul@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "cf9fe114e3b37e14fc8434d5abb192e35df551b1", "tree": "0f82879295dc792f9df1a3ce79e143a3c073510f", "parents": [ "c1d0d32a603ed06377f404adf2c538de33bb3634", "991ec02cdca33b03a132a0cacfe6f0aa0be9aa8d" ], "author": { "name": "Paul Mundt", "email": "lethal@linux-sh.org", "time": "Thu Jun 11 09:01:14 2009 +0300" }, "committer": { "name": "Paul Mundt", "email": "lethal@linux-sh.org", "time": "Thu Jun 11 09:01:14 2009 +0300" }, "message": "Merge branch \u0027master\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6\n" }, { "commit": "f2e21c9610991e95621a81407cdbab881226419b", "tree": "00967210caf3b2ab82d0d0d29da0816d8978b8aa", "parents": [ "cd86a536c81e9300d984327517548ca0652eebf9" ], "author": { "name": "Eero Nurkkala", "email": "ext-eero.nurkkala@nokia.com", "time": "Mon May 25 09:57:37 2009 +0300" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed May 27 15:33:43 2009 +0200" }, "message": "NOHZ: Properly feed cpufreq ondemand governor\n\nA call from irq_exit() may occasionally pause the timing\ninfo for cpufreq ondemand governor. This results in the\ncpufreq ondemand governor to fail to calculate the \nsystem load properly. Thus, relocate the checks for this\nparticular case to keep the governor always functional.\n\nSigned-off-by: Eero Nurkkala \u003cext-eero.nurkkala@nokia.com\u003e\nReported-by: Tero Kristo \u003ctero.kristo@nokia.com\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nAcked-by: Venkatesh Pallipadi \u003cvenkatesh.pallipadi@intel.com\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "5f8371cec93b94a24a55ba1de642ce6eade6d62c", "tree": "61b6d2acb10226b3c0f2d31bda3a49288e540eba", "parents": [ "8e9bb19ef97d6594e735bee64b6d72103e350854", "d8586ba6e1415150e1bab89f0a05447bb6f2d6d5" ], "author": { "name": "Paul Mundt", "email": "lethal@linux-sh.org", "time": "Fri May 22 13:29:37 2009 +0900" }, "committer": { "name": "Paul Mundt", "email": "lethal@linux-sh.org", "time": "Fri May 22 13:29:37 2009 +0900" }, "message": "Merge branches \u0027sh/stable-updates\u0027 and \u0027sh/sparseirq\u0027\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": "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": "c81fc2c331b8514ad112054cd2d87e6ec132286b", "tree": "e8b092222fd35c114a572272129d2eeb8f1e8238", "parents": [ "a52f5c5620673c292cb159205bf0e1eb5af1985b" ], "author": { "name": "Magnus Damm", "email": "magnus.damm@gmail.com", "time": "Fri May 01 14:52:47 2009 +0900" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Sat May 02 11:51:07 2009 +0200" }, "message": "clockevent: export register_device and delta2ns\n\nExport the following symbols using EXPORT_SYMBOL_GPL:\n - clockevent_delta2ns\n - clockevents_register_device\n\nThis allows us to build SuperH clockevent and clocksource\ndrivers as modules, see drivers/clocksource/sh_*.c\n\n[ Impact: allow modular build of clockevent drivers ]\n\nSigned-off-by: Magnus Damm \u003cdamm@igel.co.jp\u003e\nLKML-Reference: \u003c20090501055247.8286.64067.sendpatchset@rx1.opensource.se\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "7d27558c4138ac6b3684dea35c2f4379b940a7dd", "tree": "c10f5cee4dda1e6bc7977d016db020377f97feab", "parents": [ "a25cbd045a2ffc42787d4dbcbb9c7118f5f42732" ], "author": { "name": "john stultz", "email": "johnstul@us.ibm.com", "time": "Fri May 01 13:10:26 2009 -0700" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Sat May 02 11:45:15 2009 +0200" }, "message": "timekeeping: create arch_gettimeoffset infrastructure\n\nSome arches don\u0027t supply their own clocksource. This is mainly the\ncase in architectures that get their inter-tick times by reading the\ncounter on their interval timer. Since these timers wrap every tick,\nthey\u0027re not really useful as clocksources. Wrapping them to act like\none is possible but not very efficient. So we provide a callout these\narches can implement for use with the jiffies clocksource to provide\nfiner then tick granular time.\n\n[ Impact: ease the migration to generic time keeping ]\n\nSigned-off-by: John Stultz \u003cjohnstul@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "a25cbd045a2ffc42787d4dbcbb9c7118f5f42732", "tree": "cefbaaf38cd09ffb3c96cacf2b93b6d9caaa4fe2", "parents": [ "091438dd5668396328a3419abcbc6591159eb8d1" ], "author": { "name": "Magnus Damm", "email": "magnus.damm@gmail.com", "time": "Fri May 01 14:45:46 2009 +0900" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Sat May 02 11:45:15 2009 +0200" }, "message": "clocksource: setup mult_orig in clocksource_enable()\n\nSetup clocksource mult_orig in clocksource_enable().\n\nClocksource drivers can save power by using keeping the\ndevice clock disabled while the clocksource is unused.\n\nIn practice this means that the enable() and disable()\ncallbacks perform clk_enable() and clk_disable().\n\nThe enable() callback may also use clk_get_rate() to get\nthe clock rate from the clock framework. This information\ncan then be used to calculate the shift and mult variables.\n\nCurrently the mult_orig variable is setup from mult at\nregistration time only. This is conflicting with the above\ncase since the clock is disabled and the mult variable is\nnot yet calculated at the time of registration.\n\nMoving the mult_orig setup code to clocksource_enable()\nallows us to both handle the common case with no enable()\ncallback and the mult-changed-after-enable() case.\n\n[ Impact: allow dynamic clock source usage ]\n\nSigned-off-by: Magnus Damm \u003cdamm@igel.co.jp\u003e\nLKML-Reference: \u003c20090501054546.8193.10688.sendpatchset@rx1.opensource.se\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "a52f5c5620673c292cb159205bf0e1eb5af1985b", "tree": "da1a57306d54bd832b3b0d656671daf27871f3e3", "parents": [ "091438dd5668396328a3419abcbc6591159eb8d1" ], "author": { "name": "Dmitri Vorobiev", "email": "dmitri.vorobiev@movial.com", "time": "Fri May 01 13:10:21 2009 -0700" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Sat May 02 10:31:14 2009 +0200" }, "message": "clockevents: tick_broadcast_device can become static\n\nThe variable tick_broadcast_device is not used outside of the\nfile where it is defined, so let\u0027s make it static.\n\nSigned-off-by: Dmitri Vorobiev \u003cdmitri.vorobiev@movial.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "74a03b69d1b5ce00a568e142ca97e76b7f5239c6", "tree": "02bdea43ae6d528dcee97c00c3a8651f8841411a", "parents": [ "091438dd5668396328a3419abcbc6591159eb8d1" ], "author": { "name": "john stultz", "email": "johnstul@us.ibm.com", "time": "Fri May 01 13:10:25 2009 -0700" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Sat May 02 10:22:27 2009 +0200" }, "message": "clockevents: prevent endless loop in tick_handle_periodic()\n\ntick_handle_periodic() can lock up hard when a one shot clock event\ndevice is used in combination with jiffies clocksource.\n\nAvoid an endless loop issue by requiring that a highres valid\nclocksource be installed before we call tick_periodic() in a loop when\nusing ONESHOT mode. The result is we will only increment jiffies once\nper interrupt until a continuous hardware clocksource is available.\n\nWithout this, we can run into a endless loop, where each cycle through\nthe loop, jiffies is updated which increments time by tick_period or\nmore (due to clock steering), which can cause the event programming to\nthink the next event was before the newly incremented time and fail\ncausing tick_periodic() to be called again and the whole process loops\nforever.\n\n[ Impact: prevent hard lock up ]\n\nSigned-off-by: John Stultz \u003cjohnstul@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: stable@kernel.org\n" }, { "commit": "4614e6adafa2c5e6c3a9c245af2807fa7bc5117a", "tree": "e4bb5eeaa252ede053abc6b3c4d15c4127ce7a32", "parents": [ "8e19608e8b5c001e4a66ce482edc474f05fb7355" ], "author": { "name": "Magnus Damm", "email": "damm@igel.co.jp", "time": "Tue Apr 21 12:24:02 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Apr 21 13:41:47 2009 -0700" }, "message": "clocksource: add enable() and disable() callbacks\n\nAdd enable() and disable() callbacks for clocksources.\n\nThis allows us to put unused clocksources in power save mode. The\nfunctions clocksource_enable() and clocksource_disable() wrap the\ncallbacks and are inserted in the timekeeping code to enable before use\nand disable after switching to a new clocksource.\n\nSigned-off-by: Magnus Damm \u003cdamm@igel.co.jp\u003e\nAcked-by: John Stultz \u003cjohnstul@us.ibm.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8e19608e8b5c001e4a66ce482edc474f05fb7355", "tree": "06af4be339136da7476396604c30112238d84339", "parents": [ "ff14ed5db6e7e5e5dc23712d3c877891d4d9a1a8" ], "author": { "name": "Magnus Damm", "email": "damm@igel.co.jp", "time": "Tue Apr 21 12:24:00 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Apr 21 13:41:47 2009 -0700" }, "message": "clocksource: pass clocksource to read() callback\n\nPass clocksource pointer to the read() callback for clocksources. This\nallows us to share the callback between multiple instances.\n\n[hugh@veritas.com: fix powerpc build of clocksource pass clocksource mods]\n[akpm@linux-foundation.org: cleanup]\nSigned-off-by: Magnus Damm \u003cdamm@igel.co.jp\u003e\nAcked-by: John Stultz \u003cjohnstul@us.ibm.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6671de344cd661453bbee3cfde5574a974332436", "tree": "826873ae0180eea53b8fcc6e41938b67c656ba3f", "parents": [ "831576fe40f4175e0767623cffa4aeb28157943a", "7c526e1fef8d604a9ec022d9145bba5dbfe40a11" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Mar 26 16:05:42 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Mar 26 16:05:42 2009 -0700" }, "message": "Merge branch \u0027timers-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027timers-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (26 commits)\n posix timers: fix RLIMIT_CPU \u0026\u0026 fork()\n time: ntp: fix bug in ntp_update_offset() \u0026 do_adjtimex(), fix\n time: ntp: clean up second_overflow()\n time: ntp: simplify ntp_tick_adj calculations\n time: ntp: make 64-bit constants more robust\n time: ntp: refactor do_adjtimex() some more\n time: ntp: refactor do_adjtimex()\n time: ntp: fix bug in ntp_update_offset() \u0026 do_adjtimex()\n time: ntp: micro-optimize ntp_update_offset()\n time: ntp: simplify ntp_update_offset_fll()\n time: ntp: refactor and clean up ntp_update_offset()\n time: ntp: refactor up ntp_update_frequency()\n time: ntp: clean up ntp_update_frequency()\n time: ntp: simplify the MAX_TICKADJ_SCALED definition\n time: ntp: simplify the second_overflow() code flow\n time: ntp: clean up kernel/time/ntp.c\n x86: hpet: stop HPET_COUNTER when programming periodic mode\n x86: hpet: provide separate functions to stop and start the counter\n x86: hpet: print HPET registers during setup (if hpet\u003dverbose is used)\n time: apply NTP frequency/tick changes immediately\n ...\n" }, { "commit": "7c526e1fef8d604a9ec022d9145bba5dbfe40a11", "tree": "0234bf6c439cb0b91c69ac0eed28c526d05cbf2f", "parents": [ "e8684605adf87d8e65f64ce7b0274d60a05085bd", "74019224ac34b044b44a31dd89a54e3477db4896", "a2a5ac8650b570bea3cb3614f77739dcd07d6632", "37bebc70d7ad4144c571d74500db3bb26ec0c0eb" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Mar 26 15:45:52 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Mar 26 15:45:52 2009 +0100" }, "message": "Merge branches \u0027timers/new-apis\u0027, \u0027timers/ntp\u0027 and \u0027timers/urgent\u0027 into timers/core\n" }, { "commit": "a2a5ac8650b570bea3cb3614f77739dcd07d6632", "tree": "366d8184698c17103ca68b4a51b47b0c63771186", "parents": [ "39854fe8c165872d743f6a0c4860ca2de8e45ac9" ], "author": { "name": "John Stultz", "email": "johnstul@us.ibm.com", "time": "Thu Feb 26 09:46:14 2009 -0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Feb 26 19:39:47 2009 +0100" }, "message": "time: ntp: fix bug in ntp_update_offset() \u0026 do_adjtimex(), fix\n\nThe time_status conditional was accidentally placed right after we clear\nthe checked time_status bits, which causes us to take the conditional\nevery time through. This fixes it by moving the conditional to before we\nclear the time_status bits.\n\nSigned-off-by: John Stultz \u003cjohnstul@us.ibm.com\u003e\nCc: Clark Williams \u003cwilliams@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "39854fe8c165872d743f6a0c4860ca2de8e45ac9", "tree": "1bc791cf9dea4ffb34e85c0064326aa911889255", "parents": [ "069569e025706f27f939785f86a94d5d8ce55dce" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Feb 22 16:06:58 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Feb 25 18:38:17 2009 +0100" }, "message": "time: ntp: clean up second_overflow()\n\nImpact: cleanup, no functionality changed\n\nThe \u0027time_adj\u0027 local variable is named in a very confusing\nway because it almost shadows the \u0027time_adjust\u0027 global\nvariable - which is used in this same function.\n\nRename it to \u0027delta\u0027 - to make them stand apart more clearly.\n\nkernel/time/ntp.o:\n\n text\t data\t bss\t dec\t hex\tfilename\n 2545\t 114\t 144\t 2803\t af3\tntp.o.before\n 2545\t 114\t 144\t 2803\t af3\tntp.o.after\n\nmd5:\n 1bf0b3be564512279ba7cee299d1d2be ntp.o.before.asm\n 1bf0b3be564512279ba7cee299d1d2be ntp.o.after.asm\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "069569e025706f27f939785f86a94d5d8ce55dce", "tree": "49c563db54f77883dc5cd0ff1e381cf80898c0a5", "parents": [ "2b9d1496e7835a603c340e8f0dd81f4b74d5f248" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Feb 22 16:03:37 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Feb 25 18:38:16 2009 +0100" }, "message": "time: ntp: simplify ntp_tick_adj calculations\n\nImpact: micro-optimization\n\nConvert the (internal) ntp_tick_adj value we store from unscaled\nunits to scaled units. This is a constant that we never modify,\nso scaling it up once during bootup is enough - we dont have to\ndo it for every adjustment step.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "2b9d1496e7835a603c340e8f0dd81f4b74d5f248", "tree": "419904a23470733179a0ecd647263777b2f8e780", "parents": [ "e96291653b2e4df02f160b574070f6e632868e5e" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Feb 22 15:48:43 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Feb 25 18:38:15 2009 +0100" }, "message": "time: ntp: make 64-bit constants more robust\n\nImpact: cleanup, no functionality changed\n\n - make PPM_SCALE an explicit s64 constant, to\n remove (s64) casts from usage sites.\n\nkernel/time/ntp.o:\n\n text\t data\t bss\t dec\t hex\tfilename\n 2536\t 114\t 136\t 2786\t ae2\tntp.o.before\n 2536\t 114\t 136\t 2786\t ae2\tntp.o.after\n\nmd5:\n 40a7728d1188aa18e83e21a81fa7b150 ntp.o.before.asm\n 40a7728d1188aa18e83e21a81fa7b150 ntp.o.after.asm\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "e96291653b2e4df02f160b574070f6e632868e5e", "tree": "6cf3f04f18064cc96be95f06883c916cac90f937", "parents": [ "80f2257116474ceed5fccab510b4f7245c0f49d7" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Feb 22 15:35:18 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Feb 25 18:38:15 2009 +0100" }, "message": "time: ntp: refactor do_adjtimex() some more\n\nImpact: cleanup, no functionality changed\n\nFurther simplify do_adjtimex():\n\n - introduce the ntp_start_leap_timer() helper function\n - eliminate the goto adj_done complication\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "80f2257116474ceed5fccab510b4f7245c0f49d7", "tree": "513775794f865985dedcfc82dedcb1a60e469b76", "parents": [ "10dd31a7a17254d6ba793305fc590455393e610e" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Feb 22 15:15:32 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Feb 25 18:38:14 2009 +0100" }, "message": "time: ntp: refactor do_adjtimex()\n\nImpact: cleanup, no functionality changed\n\ndo_adjtimex() is currently a monster function with a maze of\nbranches. Refactor the txc-\u003emodes setting aspects of it into\ntwo new helper functions:\n\n\tprocess_adj_status()\n\tprocess_adjtimex_modes()\n\nkernel/time/ntp.o:\n\n text\t data\t bss\t dec\t hex\tfilename\n 2512\t 114\t 136\t 2762\t aca\tntp.o.before\n 2512\t 114\t 136\t 2762\t aca\tntp.o.after\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "10dd31a7a17254d6ba793305fc590455393e610e", "tree": "7416cf325f40eb27df6f0455807a0a1dfb203c2d", "parents": [ "c7986acba211e8285e14c9603fb89e6f4ea0b9f8" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Feb 22 13:38:40 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Feb 25 18:38:13 2009 +0100" }, "message": "time: ntp: fix bug in ntp_update_offset() \u0026 do_adjtimex()\n\nImpact: change (fix) the way the NTP PLL seconds offset is initialized/tracked\n\nFix a bug and do a micro-optimization:\n\nWhen PLL is enabled we do not reset time_reftime. If the PLL\nwas off for a long time (for example after bootup), this is\narguably the wrong thing to do.\n\nWe already had a hack for the common boot-time case in\nntp_update_offset(), in form of:\n\n\tif (unlikely(time_status \u0026 STA_FREQHOLD || time_reftime \u003d\u003d 0))\n \t\tsecs \u003d 0;\n\nBut the update delta should be reset later on too - not just when\nthe PLL is enabled for the first time after bootup.\n\nSo do it on !STA_PLL -\u003e STA_PLL transitions.\n\nThis changes behavior, as previously if ntpd was disabled for\na long time and we restarted it, we\u0027d run from that last update,\nwith a very large delta.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "c7986acba211e8285e14c9603fb89e6f4ea0b9f8", "tree": "fb90edb83df6a2cc0e7ac33896c731016f7f6a5a", "parents": [ "478b7aab1682246a3d1e76e27a0aecb2f0013379" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Feb 22 13:29:09 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Feb 25 18:38:12 2009 +0100" }, "message": "time: ntp: micro-optimize ntp_update_offset()\n\nImpact: cleanup, no functionality changed\n\nThe time_reftime update in ntp_update_offset() to xtime.tv_sec\nis a convoluted way of saying that we want to freeze the frequency\nand want the \u0027secs\u0027 delta to be 0. Also make this branch unlikely.\n\nThis shaves off 8 bytes from the code size:\n\n text\t data\t bss\t dec\t hex\tfilename\n 2504\t 114\t 136\t 2754\t ac2\tntp.o.before\n 2496\t 114\t 136\t 2746\t aba\tntp.o.after\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "478b7aab1682246a3d1e76e27a0aecb2f0013379", "tree": "a40492dc5668a07c6511ae446204408e02a1e980", "parents": [ "f939890b6687e05c42361655fb6610fa08f5a601" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Feb 22 13:22:23 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Feb 25 18:38:12 2009 +0100" }, "message": "time: ntp: simplify ntp_update_offset_fll()\n\nImpact: cleanup, no functionality changed\n\nChange ntp_update_offset_fll() to delta logic instead of\nabsolute value logic. This eliminates \u0027freq_adj\u0027 from the\nfunction.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "f939890b6687e05c42361655fb6610fa08f5a601", "tree": "9d01f8c51bd2fe883c407a36bf034b412181c483", "parents": [ "bc26c31d446bc9c24cd6f7003777a05fe268ae48" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Feb 22 12:57:49 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Feb 25 18:38:11 2009 +0100" }, "message": "time: ntp: refactor and clean up ntp_update_offset()\n\nImpact: cleanup, no functionality changed\n\n- introduce the ntp_update_offset_fll() helper\n- clean up the flow and variable naming\n\nkernel/time/ntp.o:\n\n text\t data\t bss\t dec\t hex\tfilename\n 2504\t 114\t 136\t 2754\t ac2\tntp.o.before\n 2504\t 114\t 136\t 2754\t ac2\tntp.o.after\n\nmd5:\n 01f7b8e1a5472a3056f9e4ae84d46315 ntp.o.before.asm\n 01f7b8e1a5472a3056f9e4ae84d46315 ntp.o.after.asm\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "bc26c31d446bc9c24cd6f7003777a05fe268ae48", "tree": "26b1738745cd7f81af2259239799a0798cbe212b", "parents": [ "9ce616aaefcb9309cb9c49a36310ebda6061b98b" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Feb 22 12:17:36 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Feb 25 18:38:10 2009 +0100" }, "message": "time: ntp: refactor up ntp_update_frequency()\n\nImpact: cleanup, no functionality changed\n\nChange ntp_update_frequency() from a hard to follow code\nflow that uses global variables as temporaries, to a clean\ninput+output flow.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "9ce616aaefcb9309cb9c49a36310ebda6061b98b", "tree": "ec9c1d67c282f4a28844b72d21ce4412b84f377c", "parents": [ "bbd1267690bb6940d0722dd33e929442c0409c01" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Feb 22 12:42:59 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Feb 25 18:38:09 2009 +0100" }, "message": "time: ntp: clean up ntp_update_frequency()\n\nImpact: cleanup, no functionality changed\n\nPrepare a refactoring of ntp_update_frequency().\n\nkernel/time/ntp.o:\n\n text\t data\t bss\t dec\t hex\tfilename\n 2504\t 114\t 136\t 2754\t ac2\tntp.o.before\n 2504\t 114\t 136\t 2754\t ac2\tntp.o.after\n\nmd5:\n 41f3009debc9b397d7394dd77d912f0a ntp.o.before.asm\n 41f3009debc9b397d7394dd77d912f0a ntp.o.after.asm\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "bbd1267690bb6940d0722dd33e929442c0409c01", "tree": "5da24af0b2dae1b7a9cbd40cb19e087eee7065ab", "parents": [ "3c972c2444dcb7088999c32b8c5a7ab3b8a6c0b6" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Feb 22 12:11:11 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Feb 25 18:38:08 2009 +0100" }, "message": "time: ntp: simplify the MAX_TICKADJ_SCALED definition\n\nImpact: cleanup, no functionality changed\n\nThere\u0027s an ugly u64 typecase in the MAX_TICKADJ_SCALED definition,\nthis can be eliminated by making the MAX_TICKADJ constant\u0027s type\n64-bit (signed).\n\nkernel/time/ntp.o:\n\n text\t data\t bss\t dec\t hex\tfilename\n 2504\t 114\t 136\t 2754\t ac2\tntp.o.before\n 2504\t 114\t 136\t 2754\t ac2\tntp.o.after\n\nmd5:\n 41f3009debc9b397d7394dd77d912f0a ntp.o.before.asm\n 41f3009debc9b397d7394dd77d912f0a ntp.o.after.asm\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "3c972c2444dcb7088999c32b8c5a7ab3b8a6c0b6", "tree": "0d89d2cfff1b3b32192ed54c70ee183356a11191", "parents": [ "53bbfa9e9437e70b322368e82c723112d690e304" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Feb 22 12:06:57 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Feb 25 18:38:07 2009 +0100" }, "message": "time: ntp: simplify the second_overflow() code flow\n\nImpact: cleanup, no functionality changed\n\nInstead of a hierarchy of conditions, transform them to clean\ngradual conditions and return\u0027s.\n\nThis makes the flow easier to read and makes the purpose of\nthe function easier to understand.\n\nkernel/time/ntp.o:\n\n text\t data\t bss\t dec\t hex\tfilename\n 2552\t 170\t 168\t 2890\t b4a\tntp.o.before\n 2552\t 170\t 168\t 2890\t b4a\tntp.o.after\n\nmd5:\n eae1275df0b7d6290c13f6f6f8f05c8c ntp.o.before.asm\n eae1275df0b7d6290c13f6f6f8f05c8c ntp.o.after.asm\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "53bbfa9e9437e70b322368e82c723112d690e304", "tree": "050817a4748d7cb7c5102273356136bbcfc2ea7e", "parents": [ "fdcedf7b75808dd72c3cc0b931be11b04d75c60a" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Feb 20 07:58:42 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Feb 25 18:38:06 2009 +0100" }, "message": "time: ntp: clean up kernel/time/ntp.c\n\nImpact: cleanup, no functionality changed\n\nMake this file a bit more readable by applying a consistent coding style.\n\nNo code changed:\n\nkernel/time/ntp.o:\n\n text\t data\t bss\t dec\t hex\tfilename\n 2552\t 170\t 168\t 2890\t b4a\tntp.o.before\n 2552\t 170\t 168\t 2890\t b4a\tntp.o.after\n\nmd5:\n eae1275df0b7d6290c13f6f6f8f05c8c ntp.o.before.asm\n eae1275df0b7d6290c13f6f6f8f05c8c ntp.o.after.asm\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "fdcedf7b75808dd72c3cc0b931be11b04d75c60a", "tree": "c64743890ffa9722f8705ce0c214f0f08ffe4d9a", "parents": [ "ba95fd47d177d46743ad94055908d22840370e06" ], "author": { "name": "john stultz", "email": "johnstul@us.ibm.com", "time": "Wed Feb 18 16:02:22 2009 -0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Feb 19 10:10:08 2009 +0100" }, "message": "time: apply NTP frequency/tick changes immediately\n\nSince the GENERIC_TIME changes landed, the adjtimex behavior changed\nfor struct timex.tick and .freq changed. When the tick or freq value\nis set, we adjust the tick_length_base in ntp_update_frequency().\nHowever, this new value doesn\u0027t get applied to tick_length until the\nnext second (via second_overflow).\n\nThis means some applications that do quick time tweaking do not see the\nrequested change made as quickly as expected.\n\nI\u0027ve run a few tests with this change, and ntpd still functions fine.\n\nSigned-off-by: John Stultz \u003cjohnstul@us.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "a75244c3d519fcb490ca2bf3f123c98017f1e8d0", "tree": "dee5b6a3589cfaae698a11297667e9e0c8b01ef5", "parents": [ "a038a353c3de4040d8445ec568acebdac144436f" ], "author": { "name": "Patrick Ohly", "email": "patrick.ohly@intel.com", "time": "Thu Feb 12 05:03:35 2009 +0000" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Sun Feb 15 22:43:32 2009 -0800" }, "message": "timecompare: generic infrastructure to map between two time bases\n\nMapping from a struct timecounter to a time returned by functions like\nktime_get_real() is implemented. This is sufficient to use this code\nin a network device driver which wants to support hardware time\nstamping and transformation of hardware time stamps to system time.\n\nThe interface could have been made more versatile by not depending on\na time counter, but this wasn\u0027t done to avoid writing glue code\nelsewhere.\n\nThe method implemented here is the one used and analyzed under the name\n\"assisted PTP\" in the LCI PTP paper:\nhttp://www.linuxclustersinstitute.org/conferences/archive/2008/PDF/Ohly_92221.pdf\n\nAcked-by: John Stultz \u003cjohnstul@us.ibm.com\u003e\nSigned-off-by: Patrick Ohly \u003cpatrick.ohly@intel.com\u003e\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "a038a353c3de4040d8445ec568acebdac144436f", "tree": "2fac74d812b47fa2d9fabfa55261d544813b66f6", "parents": [ "0a834a36ac92375cd82d9e4fe4f571e257997d6a" ], "author": { "name": "Patrick Ohly", "email": "patrick.ohly@intel.com", "time": "Thu Feb 12 05:03:34 2009 +0000" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Sun Feb 15 22:43:31 2009 -0800" }, "message": "clocksource: allow usage independent of timekeeping.c\n\nSo far struct clocksource acted as the interface between time/timekeeping.c\nand hardware. This patch generalizes the concept so that a similar\ninterface can also be used in other contexts. For that it introduces\nnew structures and related functions *without* touching the existing\nstruct clocksource.\n\nThe reasons for adding these new structures to clocksource.[ch] are\n* the APIs are clearly related\n* struct clocksource could be cleaned up to use the new structs\n* avoids proliferation of files with similar names (timesource.h?\n timecounter.h?)\n\nAs outlined in the discussion with John Stultz, this patch adds\n* struct cyclecounter: stateless API to hardware which counts clock cycles\n* struct timecounter: stateful utility code built on a cyclecounter which\n provides a nanosecond counter\n* only the function to read the nanosecond counter; deltas are used internally\n and not exposed to users of timecounter\n\nThe code does no locking of the shared state. It must be called at least\nas often as the cycle counter wraps around to detect these wrap arounds.\nBoth is the responsibility of the timecounter user.\n\nAcked-by: John Stultz \u003cjohnstul@us.ibm.com\u003e\nSigned-off-by: Patrick Ohly \u003cpatrick.ohly@intel.com\u003e\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "5ba1ae92b6796b3367152ccd9baa022dde7eed4c", "tree": "3283a40603c06342d4197d838f6f1dec247a1474", "parents": [ "ae1a25da8448271a99745da03100d5299575a269", "2d68259db26ad57fd9643f1c69b5181ec9836ca9", "42bb8cc5e81028e217105299001070d57eb84ad7", "6626bff24578753808c8b5bd4f1619e14e980f0f", "ff08f76d738d0ec0f334b187f61e160caa321d54" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Feb 08 20:14:11 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Feb 08 20:14:11 2009 +0100" }, "message": "Merge branches \u0027timers/clockevents\u0027, \u0027timers/hpet\u0027, \u0027timers/hrtimers\u0027 and \u0027timers/urgent\u0027 into timers/core\n" }, { "commit": "94df7de0289bc2df3d6e85cd2ece52bf42682f45", "tree": "b3f614b015adfb9574959687bb9b7ac4c884e23a", "parents": [ "7f22391cbe82a80a9f891d8bd10fc28ff248d1e2" ], "author": { "name": "Sebastien Dugue", "email": "sebastien.dugue@bull.net", "time": "Mon Dec 01 14:09:07 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jan 30 22:35:29 2009 +0100" }, "message": "hrtimers: allow the hot-unplugging of all cpus\n\nImpact: fix CPU hotplug hang on Power6 testbox\n\nOn architectures that support offlining all cpus (at least powerpc/pseries),\nhot-unpluging the tick_do_timer_cpu can result in a system hang.\n\nThis comes from the fact that if the cpu going down happens to be the\ncpu doing the tick, then as the tick_do_timer_cpu handover happens after the\ncpu is dead (via the CPU_DEAD notification), we\u0027re left without ticks,\njiffies are frozen and any task relying on timers (msleep, ...) is stuck.\nThat\u0027s particularly the case for the cpu looping in __cpu_die() waiting\nfor the dying cpu to be dead.\n\nThis patch addresses this by having the tick_do_timer_cpu handover happen\nearlier during the CPU_DYING notification. For this, a new clockevent\nnotification type is introduced (CLOCK_EVT_NOTIFY_CPU_DYING) which is triggered\nin hrtimer_cpu_notify().\n\nSigned-off-by: Sebastien Dugue \u003csebastien.dugue@bull.net\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "2d68259db26ad57fd9643f1c69b5181ec9836ca9", "tree": "a185444af85f87e31937947c6be902f340addeea", "parents": [ "7cb36b6ccdca03bd87e8faca7fd920643dd1aec7" ], "author": { "name": "Magnus Damm", "email": "magnus.damm@gmail.com", "time": "Fri Jan 16 17:14:38 2009 +0900" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri Jan 16 12:27:39 2009 +0100" }, "message": "clockevents: let set_mode() setup delta information\n\nAllow the set_mode() clockevent callback to decide and fill in delta\ndetails such as shift, mult, max_delta_ns and min_delta_ns.\n\nWith this change the clockevent can be registered without delta details\nwhich allows us to keep the parent clock disabled until the clockevent\ngets setup using set_mode().\n\nLetting set_mode() fill in or update delta details allows us to save\npower by disabling the parent clock while the clockevent is unused.\nThis may however make the parent clock rate change, so next time the\nclockevent gets enabled we need let set_mode() to update the detla\ndetails accordingly. Doing it at registration time is not enough.\n\nFurthermore, the delta details seem unused in the case of periodic-only\nclockevent drivers, so this change also allows registration of such\ndrivers without the delta details filled in.\n\nSigned-off-by: Magnus Damm \u003cdamm@igel.co.jp\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "934d96eafadcf3eb3ccd094af9919f020907fc41", "tree": "8ccda81ddd77195ebe22d38b98d13f97452eedc6", "parents": [ "6d612b0f943289856c6e8186c564cda922cd040e" ], "author": { "name": "Jaswinder Singh Rajput", "email": "jaswinder@infradead.org", "time": "Wed Jan 14 20:38:17 2009 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Jan 15 12:06:56 2009 +0100" }, "message": "time-sched.c: tick_nohz_update_jiffies should be static\n\nImpact: cleanup, reduce kernel size a bit, avoid sparse warning\n\nFixes sparse warning:\n\n kernel/time/tick-sched.c:137:6: warning: symbol \u0027tick_nohz_update_jiffies\u0027 was not declared. Should it be static?\n\nSigned-off-by: Jaswinder Singh Rajput \u003cjaswinderrajput@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "e3ee1e123183ca9847e74b7b8e2694c9e3b817a6", "tree": "652a84674ed05eaa46a813de2223af0bd0168a5a", "parents": [ "5762ba1873b0bb9faa631aaa02f533c2b9837f82", "c59765042f53a79a7a65585042ff463b69cb248c" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jan 12 11:32:03 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jan 12 11:32:03 2009 +0100" }, "message": "Merge commit \u0027v2.6.29-rc1\u0027 into timers/hrtimers\n\nConflicts:\n\tkernel/time/tick-common.c\n" }, { "commit": "57c44c5f6fb0a8002feb258c1af58e1a744b1fcb", "tree": "978bd46ca765a88e9c101cb705bbb0bf46015643", "parents": [ "76052749143d03006271cc0ce8205ad756917062", "5a9e67b1a19e08a82387709f325d26e07b891d27" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Jan 07 11:31:52 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Jan 07 11:31:52 2009 -0800" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (24 commits)\n trivial: chack -\u003e check typo fix in main Makefile\n trivial: Add a space (and a comma) to a printk in 8250 driver\n trivial: Fix misspelling of \"firmware\" in docs for ncr53c8xx/sym53c8xx\n trivial: Fix misspelling of \"firmware\" in powerpc Makefile\n trivial: Fix misspelling of \"firmware\" in usb.c\n trivial: Fix misspelling of \"firmware\" in qla1280.c\n trivial: Fix misspelling of \"firmware\" in a100u2w.c\n trivial: Fix misspelling of \"firmware\" in megaraid.c\n trivial: Fix misspelling of \"firmware\" in ql4_mbx.c\n trivial: Fix misspelling of \"firmware\" in acpi_memhotplug.c\n trivial: Fix misspelling of \"firmware\" in ipw2100.c\n trivial: Fix misspelling of \"firmware\" in atmel.c\n trivial: Fix misspelled firmware in Kconfig\n trivial: fix an -\u003e a typos in documentation and comments\n trivial: fix then -\u003e than typos in comments and documentation\n trivial: update Jesper Juhl CREDITS entry with new email\n trivial: fix singal -\u003e signal typo\n trivial: Fix incorrect use of \"loose\" in event.c\n trivial: printk: fix indentation of new_text_line declaration\n trivial: rtc-stk17ta8: fix sparse warning\n ...\n" }, { "commit": "025dfdafe77f20b3890981a394774baab7b9c827", "tree": "c4d514990d7a0673df5d32aa11fded95f9644ff0", "parents": [ "0abb8b6a939b742f273edc68b64dba26c57331bc" ], "author": { "name": "Frederik Schwarzer", "email": "schwarzerf@gmail.com", "time": "Thu Oct 16 19:02:37 2008 +0200" }, "committer": { "name": "Jiri Kosina", "email": "jkosina@suse.cz", "time": "Tue Jan 06 11:28:06 2009 +0100" }, "message": "trivial: fix then -\u003e than typos in comments and documentation\n\n- (better, more, bigger ...) then -\u003e (...) than\n\nSigned-off-by: Frederik Schwarzer \u003cschwarzerf@gmail.com\u003e\nSigned-off-by: Jiri Kosina \u003cjkosina@suse.cz\u003e\n" }, { "commit": "d9be28ea9110c596a05bd2d56afa94251bd19818", "tree": "c23a960b9087694a880011a4a956cbcf8c3c5b72", "parents": [ "c70f22d203fc02c805b6ed4a3483b740dc36786b", "1c5745aa380efb6417b5681104b007c8612fb496", "47fea2adfc9e16846bc57c2f64ff233b354fef39", "238c6d54830c624f34ac9cf123ac04aebfca5013" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jan 06 09:33:57 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jan 06 09:33:57 2009 +0100" }, "message": "Merge branches \u0027sched/clock\u0027, \u0027sched/cleanups\u0027 and \u0027linus\u0027 into sched/urgent\n" }, { "commit": "7d3b56ba37a95f1f370f50258ed3954c304c524b", "tree": "86102527b92f02450aa245f084ffb491c18d2e0a", "parents": [ "269b012321f2f1f8e4648c43a93bf432b42c6668", "ab14398abd195af91a744c320a52a1bce814dd1e" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jan 03 12:04:39 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jan 03 12:04:39 2009 -0800" }, "message": "Merge branch \u0027cpus4096-for-linus-3\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027cpus4096-for-linus-3\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (77 commits)\n x86: setup_per_cpu_areas() cleanup\n cpumask: fix compile error when CONFIG_NR_CPUS is not defined\n cpumask: use alloc_cpumask_var_node where appropriate\n cpumask: convert shared_cpu_map in acpi_processor* structs to cpumask_var_t\n x86: use cpumask_var_t in acpi/boot.c\n x86: cleanup some remaining usages of NR_CPUS where s/b nr_cpu_ids\n sched: put back some stack hog changes that were undone in kernel/sched.c\n x86: enable cpus display of kernel_max and offlined cpus\n ia64: cpumask fix for is_affinity_mask_valid()\n cpumask: convert RCU implementations, fix\n xtensa: define __fls\n mn10300: define __fls\n m32r: define __fls\n h8300: define __fls\n frv: define __fls\n cris: define __fls\n cpumask: CONFIG_DISABLE_OBSOLETE_CPUMASK_FUNCTIONS\n cpumask: zero extra bits in alloc_cpumask_var_node\n cpumask: replace for_each_cpu_mask_nr with for_each_cpu in kernel/time/\n cpumask: convert mm/\n ...\n" }, { "commit": "61420f59a589c0668f70cbe725785837c78ece90", "tree": "79ae77d731cd2425677b9527d50079d8cf34c3b2", "parents": [ "d97106ab53f812910a62d18afb9dbe882819c1ba", "c742b31c03f37c5c499178f09f57381aa6c70131" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jan 03 11:56:24 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jan 03 11:56:24 2009 -0800" }, "message": "Merge branch \u0027cputime\u0027 of git://git390.osdl.marist.edu/pub/scm/linux-2.6\n\n* \u0027cputime\u0027 of git://git390.osdl.marist.edu/pub/scm/linux-2.6:\n [PATCH] fast vdso implementation for CLOCK_THREAD_CPUTIME_ID\n [PATCH] improve idle cputime accounting\n [PATCH] improve precision of idle time detection.\n [PATCH] improve precision of process accounting.\n [PATCH] idle cputime accounting\n [PATCH] fix scaled \u0026 unscaled cputime accounting\n" }, { "commit": "7eb19553369c46cc1fa64caf120cbcab1b597f7c", "tree": "ef1a3beae706b9497c845d0a2557ceb4d2754998", "parents": [ "6092848a2a23b660150a38bc06f59d75838d70c8", "8c384cdee3e04d6194a2c2b192b624754f990835" ], "author": { "name": "Mike Travis", "email": "travis@sgi.com", "time": "Wed Dec 31 17:34:16 2008 -0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Jan 03 18:53:31 2009 +0100" }, "message": "Merge branch \u0027master\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask into merge-rr-cpumask\n\nConflicts:\n\tarch/x86/kernel/io_apic.c\n\tkernel/rcuclassic.c\n\tkernel/sched.c\n\tkernel/time/tick-sched.c\n\nSigned-off-by: Mike Travis \u003ctravis@sgi.com\u003e\n[ mingo@elte.hu: backmerged typo fix for io_apic.c ]\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "b840d79631c882786925303c2b0f4fefc31845ed", "tree": "cda60a95d4507fe1321fc285af38982d7eb9693b", "parents": [ "597b0d21626da4e6f09f132442caf0cc2b0eb47c", "c3d80000e3a812fe5a200d6bde755fbd7fa65481" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 02 11:44:09 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 02 11:44:09 2009 -0800" }, "message": "Merge branch \u0027cpus4096-for-linus-2\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027cpus4096-for-linus-2\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (66 commits)\n x86: export vector_used_by_percpu_irq\n x86: use logical apicid in x2apic_cluster\u0027s x2apic_cpu_mask_to_apicid_and()\n sched: nominate preferred wakeup cpu, fix\n x86: fix lguest used_vectors breakage, -v2\n x86: fix warning in arch/x86/kernel/io_apic.c\n sched: fix warning in kernel/sched.c\n sched: move test_sd_parent() to an SMP section of sched.h\n sched: add SD_BALANCE_NEWIDLE at MC and CPU level for sched_mc\u003e0\n sched: activate active load balancing in new idle cpus\n sched: bias task wakeups to preferred semi-idle packages\n sched: nominate preferred wakeup cpu\n sched: favour lower logical cpu number for sched_mc balance\n sched: framework for sched_mc/smt_power_savings\u003dN\n sched: convert BALANCE_FOR_xx_POWER to inline functions\n x86: use possible_cpus\u003dNUM to extend the possible cpus allowed\n x86: fix cpu_mask_to_apicid_and to include cpu_online_mask\n x86: update io_apic.c to the new cpumask code\n x86: Introduce topology_core_cpumask()/topology_thread_cpumask()\n x86: xen: use smp_call_function_many()\n x86: use work_on_cpu in x86/kernel/cpu/mcheck/mce_amd_64.c\n ...\n\nFixed up trivial conflict in kernel/time/tick-sched.c manually\n" }, { "commit": "5db0e1e9e0f30f160b832a0b5cd1131954bf4f6e", "tree": "c49877290fcbebb6245429bc5d554bea438c4fe8", "parents": [ "174596a0b9f21e8844d70566a6bb29bf48a87750" ], "author": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Thu Jan 01 10:12:29 2009 +1030" }, "committer": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Thu Jan 01 10:12:29 2009 +1030" }, "message": "cpumask: replace for_each_cpu_mask_nr with for_each_cpu in kernel/time/\n\nImpact: cleanup\n\nSimple replacement, now the _nr is redundant.\n\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Mike Travis \u003ctravis@sgi.com\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\n" }, { "commit": "6b954823c24f04ed026a8517f6bab5abda279db8", "tree": "bc034346fa51ba63361e23a1631e163eeb52097e", "parents": [ "e7577c50f2fb2d1c167e2c04a4b4c2cc042acb82" ], "author": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Thu Jan 01 10:12:25 2009 +1030" }, "committer": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Thu Jan 01 10:12:25 2009 +1030" }, "message": "cpumask: convert kernel time functions\n\nImpact: Use new APIs\n\nConvert kernel/time functions to use struct cpumask *.\n\nNote the ugly bitmap declarations in tick-broadcast.c. These should\nbe cpumask_var_t, but there was no obvious initialization function to\nput the alloc_cpumask_var() calls in. This was safe.\n\n(Eventually \u0027struct cpumask\u0027 will be undefined for CONFIG_CPUMASK_OFFSTACK,\nso we use a bitmap here to show we really mean it).\n\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Mike Travis \u003ctravis@sgi.com\u003e\n" }, { "commit": "79741dd35713ff4f6fd0eafd59fa94e8a4ba922d", "tree": "73c6b503fbd274cb3fcca7a0a68c6f636e3a53ad", "parents": [ "457533a7d3402d1d91fbc125c8bd1bd16dcd3cd4" ], "author": { "name": "Martin Schwidefsky", "email": "schwidefsky@de.ibm.com", "time": "Wed Dec 31 15:11:38 2008 +0100" }, "committer": { "name": "Martin Schwidefsky", "email": "schwidefsky@de.ibm.com", "time": "Wed Dec 31 15:11:46 2008 +0100" }, "message": "[PATCH] idle cputime accounting\n\nThe cpu time spent by the idle process actually doing something is\ncurrently accounted as idle time. This is plain wrong, the architectures\nthat support VIRT_CPU_ACCOUNTING\u003dy can do better: distinguish between the\ntime spent doing nothing and the time spent by idle doing work. The first\nis accounted with account_idle_time and the second with account_system_time.\nThe architectures that use the account_xxx_time interface directly and not\nthe account_xxx_ticks interface now need to do the check for the idle\nprocess in their arch code. In particular to improve the system vs true\nidle time accounting the arch code needs to measure the true idle time\ninstead of just testing for the idle process.\nTo improve the tick based accounting as well we would need an architecture\nprimitive that can tell us if the pt_regs of the interrupted context\npoints to the magic instruction that halts the cpu.\n\nIn addition idle time is no more added to the stime of the idle process.\nThis field now contains the system time of the idle process as it should\nbe. On systems without VIRT_CPU_ACCOUNTING this will always be zero as\nevery tick that occurs while idle is running will be accounted as idle\ntime.\n\nThis patch contains the necessary common code changes to be able to\ndistinguish idle system time and true idle time. The architectures with\nsupport for VIRT_CPU_ACCOUNTING need some changes to exploit this.\n\nSigned-off-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\n" }, { "commit": "457533a7d3402d1d91fbc125c8bd1bd16dcd3cd4", "tree": "cbe69310a66176dea2a9e7bd201db95efe4a2890", "parents": [ "6a94cb73064c952255336cc57731904174b2c58f" ], "author": { "name": "Martin Schwidefsky", "email": "schwidefsky@de.ibm.com", "time": "Wed Dec 31 15:11:37 2008 +0100" }, "committer": { "name": "Martin Schwidefsky", "email": "schwidefsky@de.ibm.com", "time": "Wed Dec 31 15:11:46 2008 +0100" }, "message": "[PATCH] fix scaled \u0026 unscaled cputime accounting\n\nThe utimescaled / stimescaled fields in the task structure and the\nglobal cpustat should be set on all architectures. On s390 the calls\nto account_user_time_scaled and account_system_time_scaled never have\nbeen added. In addition system time that is accounted as guest time\nto the user time of a process is accounted to the scaled system time\ninstead of the scaled user time.\nTo fix the bugs and to prevent future forgetfulness this patch merges\naccount_system_time_scaled into account_system_time and\naccount_user_time_scaled into account_user_time.\n\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: Hidetoshi Seto \u003cseto.hidetoshi@jp.fujitsu.com\u003e\nCc: Tony Luck \u003ctony.luck@intel.com\u003e\nCc: Jeremy Fitzhardinge \u003cjeremy@xensource.com\u003e\nCc: Chris Wright \u003cchrisw@sous-sol.org\u003e\nCc: Michael Neuling \u003cmikey@neuling.org\u003e\nAcked-by: Paul Mackerras \u003cpaulus@samba.org\u003e\nSigned-off-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\n" }, { "commit": "2ca1a615835d9f4990f42102ab1f2ef434e7e89c", "tree": "726cf3d5f29a6c66c44e4bd68e7ebed2fd83d059", "parents": [ "e12f0102ac81d660c9f801d0a0e10ccf4537a9de", "6a94cb73064c952255336cc57731904174b2c58f" ], "author": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Wed Dec 31 23:05:57 2008 +1030" }, "committer": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Wed Dec 31 23:05:57 2008 +1030" }, "message": "Merge branch \u0027master\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6\n\nConflicts:\n\n\tarch/x86/kernel/io_apic.c\n" }, { "commit": "1c5745aa380efb6417b5681104b007c8612fb496", "tree": "263b81742f7973c0dd86efe414a79a324c0769e4", "parents": [ "6a94cb73064c952255336cc57731904174b2c58f" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Dec 22 23:05:28 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Dec 31 09:53:21 2008 +0100" }, "message": "sched_clock: prevent scd-\u003eclock from moving backwards, take #2\n\nRedo:\n\n 5b7dba4: sched_clock: prevent scd-\u003eclock from moving backwards\n\nwhich had to be reverted due to s2ram hangs:\n\n ca7e716: Revert \"sched_clock: prevent scd-\u003eclock from moving backwards\"\n\n... this time with resume restoring GTOD later in the sequence\ntaken into account as well.\n\nThe \"timekeeping_suspended\" flag is not very nice but we cannot call into\nGTOD before it has been properly resumed and the scheduler will run very\nearly in the resume sequence.\n\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "5762ba1873b0bb9faa631aaa02f533c2b9837f82", "tree": "3ea61b03a12ec16620f8527c4c83cb90d80cf6cc", "parents": [ "0ce74d9296c971b2355c26984ad0bc538e34dd6c" ], "author": { "name": "Sebastien Dugue", "email": "sebastien.dugue@bull.net", "time": "Mon Dec 01 14:09:07 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Dec 30 07:37:19 2008 +0100" }, "message": "hrtimers: allow the hot-unplugging of all cpus\n\nImpact: fix CPU hotplug hang on Power6 testbox\n\nOn architectures that support offlining all cpus (at least powerpc/pseries),\nhot-unpluging the tick_do_timer_cpu can result in a system hang.\n\nThis comes from the fact that if the cpu going down happens to be the\ncpu doing the tick, then as the tick_do_timer_cpu handover happens after the\ncpu is dead (via the CPU_DEAD notification), we\u0027re left without ticks,\njiffies are frozen and any task relying on timers (msleep, ...) is stuck.\nThat\u0027s particularly the case for the cpu looping in __cpu_die() waiting\nfor the dying cpu to be dead.\n\nThis patch addresses this by having the tick_do_timer_cpu handover happen\nearlier during the CPU_DYING notification. For this, a new clockevent\nnotification type is introduced (CLOCK_EVT_NOTIFY_CPU_DYING) which is triggered\nin hrtimer_cpu_notify().\n\nSigned-off-by: Sebastien Dugue \u003csebastien.dugue@bull.net\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "32e8d18683adb322c994d1a0fe02d66380991f45", "tree": "1c697f6d1c042dc560b096dca76680f4acf415b3", "parents": [ "4a6908a3a050aacc9c3a2f36b276b46c0629ad91", "0a57b783018a77ca16097198844438bdff4d012e", "39c04b55240342d0742ac48538d3d8c71bfc0a94", "b2e3c0adec918ea22b6c9d7c76193dd3aaba9bd4", "001474491fabeca233168a8598f721c808040f90", "c29541b24fb2c6301021637229ae5347c877330a", "8187926bdae98648db24db3391c4efd21ec669b1", "a5a64498c194c82ecad3a2d67cff6231cda8d3dd" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Dec 25 18:02:25 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Dec 25 18:02:25 2008 +0100" }, "message": "Merge branches \u0027timers/clocksource\u0027, \u0027timers/hpet\u0027, \u0027timers/hrtimers\u0027, \u0027timers/nohz\u0027, \u0027timers/ntp\u0027, \u0027timers/posixtimers\u0027 and \u0027timers/rtc\u0027 into timers/core\n" }, { "commit": "968ea6d80e395cf11a51143cfa1b9a14ada676df", "tree": "dc2acec8c9bdced33afe1e273ee5e0b0b93d2703", "parents": [ "7be7585393d311866653564fbcd10a3232773c0b", "8299608f140ae321e4eb5d1306184265d2b9511e" ], "author": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Sat Dec 13 21:55:51 2008 +1030" }, "committer": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Sat Dec 13 21:55:51 2008 +1030" }, "message": "Merge ../linux-2.6-x86\n\nConflicts:\n\n\tarch/x86/kernel/io_apic.c\n\tkernel/sched.c\n\tkernel/sched_stats.h\n" }, { "commit": "320ab2b0b1e08e3805a3e1084a2f0eb1938d5d67", "tree": "1303d8ca53cca655425d512d65cc9ab043254b31", "parents": [ "0de26520c7cabf36e1de090ea8092f011a6106ce" ], "author": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Sat Dec 13 21:20:26 2008 +1030" }, "committer": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Sat Dec 13 21:20:26 2008 +1030" }, "message": "cpumask: convert struct clock_event_device to cpumask pointers.\n\nImpact: change calling convention of existing clock_event APIs\n\nstruct clock_event_timer\u0027s cpumask field gets changed to take pointer,\nas does the -\u003ebroadcast function.\n\nAnother single-patch change. For safety, we BUG_ON() in\nclockevents_register_device() if it\u0027s not set.\n\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "0de26520c7cabf36e1de090ea8092f011a6106ce", "tree": "3d02e509b6315fdfd9cdb8c9e0b9ed0a30cf9384", "parents": [ "29c0177e6a4ac094302bed54a1d4bbb6b740a9ef" ], "author": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Sat Dec 13 21:20:26 2008 +1030" }, "committer": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Sat Dec 13 21:20:26 2008 +1030" }, "message": "cpumask: make irq_set_affinity() take a const struct cpumask\n\nImpact: change existing irq_chip API\n\nNot much point with gentle transition here: the struct irq_chip\u0027s\nsetaffinity method signature needs to change.\n\nFortunately, not widely used code, but hits a few architectures.\n\nNote: In irq_select_affinity() I save a temporary in by mangling\nirq_desc[irq].affinity directly. Ingo, does this break anything?\n\n(Folded in fix from KOSAKI Motohiro)\n\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Mike Travis \u003ctravis@sgi.com\u003e\nReviewed-by: Grant Grundler \u003cgrundler@parisc-linux.org\u003e\nAcked-by: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: ralf@linux-mips.org\nCc: grundler@parisc-linux.org\nCc: jeremy@xensource.com\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\n" }, { "commit": "001474491fabeca233168a8598f721c808040f90", "tree": "858467ce6aed38ba2bd1ea8682e12bbdb182d0f1", "parents": [ "fa116ea35ec7f40e890972324409e99eed008d56" ], "author": { "name": "Woodruff, Richard", "email": "r-woodruff2@ti.com", "time": "Mon Dec 01 14:18:11 2008 -0800" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri Dec 12 16:55:31 2008 +0100" }, "message": "nohz: suppress needless timer reprogramming\n\nIn my device I get many interrupts from a high speed USB device in a very\nshort period of time. The system spends a lot of time reprogramming the\nhardware timer which is in a slower timing domain as compared to the CPU. \nThis results in the CPU spending a huge amount of time waiting for the\ntimer posting to be done. All of this reprogramming is useless as the\nwake up time has not changed.\n\nAs measured using ETM trace this drops my reprogramming penalty from\nalmost 60% CPU load down to 15% during high interrupt rate. I can send\ntraces to show this.\n\nSuppress setting of duplicate timer event when timer already stopped. \nTimer programming can be very costly and can result in long cpu stall/wait\ntimes.\n\n[akpm@linux-foundation.org: coding-style fixes]\n[tglx@linutronix.de: move the check to the right place and avoid raising\n\t\t the softirq for nothing]\n\nSigned-off-by: Richard Woodruff \u003cr-woodruff2@ti.com\u003e\nCc: johnstul@us.ibm.com\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "45ab6b0c76d0e4cce5bd608ccf97b0f6b20f18df", "tree": "4d51c73533c386aee16fde1e74b5e3bc22eedc53", "parents": [ "81444a799550214f549caf579cf65a0ca55e70b7", "d65bd5ecb2bd166cea4952a59b7e16cc3ad6ef6c" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Dec 12 13:48:57 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Dec 12 13:48:57 2008 +0100" }, "message": "Merge branch \u0027sched/core\u0027 into cpus4096\n\nConflicts:\n\tinclude/linux/ftrace.h\n\tkernel/sched.c\n" }, { "commit": "fa116ea35ec7f40e890972324409e99eed008d56", "tree": "60747cb2e78fbd66abdce1f133816ab22a078d34", "parents": [ "6c34bc2976b30dc8b56392c020e25bae1f363cab" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Thu Dec 11 17:04:11 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Dec 12 07:27:01 2008 +0100" }, "message": "nohz: no softirq pending warnings for offline cpus\n\nImpact: remove false positive warning\n\nAfter a cpu was taken down during cpu hotplug (read: disabled for interrupts)\nit still might have pending softirqs. However take_cpu_down makes sure\nthat the idle task will run next instead of ksoftirqd on the taken down cpu.\nThe idle task will call tick_nohz_stop_sched_tick which might warn about\npending softirqs just before the cpu kills itself completely.\n\nHowever the pending softirqs on the dead cpu aren\u0027t a problem because they\nwill be moved to an online cpu during CPU_DEAD handling.\n\nSo make sure we warn only for online cpus.\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "6c9bacb41c10ba84ff68f238e234d96f35fb64f7", "tree": "220e4bde083339abd25cb26b973585b9aa19ab80", "parents": [ "eccdaeafaea3ed115068ba55d01f22e486e5437d" ], "author": { "name": "john stultz", "email": "johnstul@us.ibm.com", "time": "Mon Dec 01 18:34:41 2008 -0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Dec 04 08:43:02 2008 +0100" }, "message": "time: catch xtime_nsec underflows and fix them\n\nImpact: fix time warp bug\n\nAlex Shi, along with Yanmin Zhang have been noticing occasional time\ninconsistencies recently. Through their great diagnosis, they found that\nthe xtime_nsec value used in update_wall_time was occasionally going\nnegative. After looking through the code for awhile, I realized we have\nthe possibility for an underflow when three conditions are met in\nupdate_wall_time():\n\n 1) We have accumulated a second\u0027s worth of nanoseconds, so we\n incremented xtime.tv_sec and appropriately decrement xtime_nsec.\n (This doesn\u0027t cause xtime_nsec to go negative, but it can cause it\n to be small).\n\n 2) The remaining offset value is large, but just slightly less then\n cycle_interval.\n\n 3) clocksource_adjust() is speeding up the clock, causing a\n corrective amount (compensating for the increase in the multiplier\n being multiplied against the unaccumulated offset value) to be\n subtracted from xtime_nsec.\n\nThis can cause xtime_nsec to underflow.\n\nUnfortunately, since we notify the NTP subsystem via second_overflow()\nwhenever we accumulate a full second, and this effects the error\naccumulation that has already occured, we cannot simply revert the\naccumulated second from xtime nor move the second accumulation to after\nthe clocksource_adjust call without a change in behavior.\n\nThis leaves us with (at least) two options:\n\n1) Simply return from clocksource_adjust() without making a change if we\n notice the adjustment would cause xtime_nsec to go negative.\n\nThis would work, but I\u0027m concerned that if a large adjustment was needed\n(due to the error being large), it may be possible to get stuck with an\never increasing error that becomes too large to correct (since it may\nalways force xtime_nsec negative). This may just be paranoia on my part.\n\n2) Catch xtime_nsec if it is negative, then add back the amount its\n negative to both xtime_nsec and the error.\n\nThis second method is consistent with how we\u0027ve handled earlier rounding\nissues, and also has the benefit that the error being added is always in\nthe oposite direction also always equal or smaller then the correction\nbeing applied. So the risk of a corner case where things get out of\ncontrol is lessened.\n\nThis patch fixes bug 11970, as tested by Yanmin Zhang\nhttp://bugzilla.kernel.org/show_bug.cgi?id\u003d11970\n\nReported-by: alex.shi@intel.com\nSigned-off-by: John Stultz \u003cjohnstul@us.ibm.com\u003e\nAcked-by: \"Zhang, Yanmin\" \u003cyanmin_zhang@linux.intel.com\u003e\nTested-by: \"Zhang, Yanmin\" \u003cyanmin_zhang@linux.intel.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "ca109491f612aab5c8152207631c0444f63da97f", "tree": "46d0a90e79c75fc039bda7d01862062e0ac39900", "parents": [ "ed313489badef16d700f5a3be50e8fd8f8294bc8" ], "author": { "name": "Peter Zijlstra", "email": "peterz@infradead.org", "time": "Tue Nov 25 12:43:51 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Nov 25 15:45:46 2008 +0100" }, "message": "hrtimer: removing all ur callback modes\n\nImpact: cleanup, move all hrtimer processing into hardirq context\n\nThis is an attempt at removing some of the hrtimer complexity by\nreducing the number of callback modes to 1.\n\nThis means that all hrtimer callback functions will be ran from HARD-irq\ncontext.\n\nI went through all the 30 odd hrtimer callback functions in the kernel\nand saw only one that I\u0027m not quite sure of, which is the one in\nnet/can/bcm.c - hence I\u0027m CC-ing the folks responsible for that code.\n\nFurthermore, the hrtimer core now calls callbacks directly with IRQs\ndisabled in case you try to enqueue an expired timer. If this timer is a\nperiodic timer (which should use hrtimer_forward() to advance its time)\nthen it might be possible to end up in an inf. recursive loop due to the\nfact that hrtimer_forward() doesn\u0027t round up to the next timer\ngranularity, and therefore keeps on calling the callback - obviously\nthis needs a fix.\n\nAside from that, this seems to compile and actually boot on my dual core\ntest box - although I\u0027m sure there are some bugs in, me not hitting any\nmakes me certain :-)\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "6a7b3dc3440f7b5a9b67594af01ed562cdeb41e4", "tree": "fdbe54d2c9cd665c6a76ed09e9e4b7c51fb4df20", "parents": [ "6c99e9ad47d9c082bd096f42fb49e397b05d58a8" ], "author": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Tue Nov 25 02:35:04 2008 +1030" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Nov 24 17:51:10 2008 +0100" }, "message": "sched: convert nohz_cpu_mask to cpumask_var_t.\n\nImpact: (future) size reduction for large NR_CPUS.\n\nDynamically allocating cpumasks (when CONFIG_CPUMASK_OFFSTACK) saves\nspace for small nr_cpu_ids but big CONFIG_NR_CPUS. cpumask_var_t\nis just a struct cpumask for !CONFIG_CPUMASK_OFFSTACK.\n\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "ae99286b4f1be7788f2d6947c66a91dbd6351eec", "tree": "a403ffaeaad1cb38afa79e2cca40ecc00ea694ab", "parents": [ "ee5f80a993539490a07477ff2526bf62c503fbb4" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Nov 10 13:20:23 2008 +0100" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@apollo.(none)", "time": "Mon Nov 10 22:39:27 2008 +0100" }, "message": "nohz: disable tick_nohz_kick_tick() for now\n\nImpact: nohz powersavings and wakeup regression\n\ncommit fb02fbc14d17837b4b7b02dbb36142c16a7bf208 (NOHZ: restart tick\ndevice from irq_enter()) causes a serious wakeup regression.\n\nWhile the patch is correct it does not take into account that spurious\nwakeups happen on x86. A fix for this issue is available, but we just\nrevert to the .27 behaviour and let long running softirqs screw\nthemself.\n\nDisable it for now.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "268a3dcfea2077fca60d3715caa5c96f9b5e6ea7", "tree": "c2232774508424e677e27f296090a68c775e4669", "parents": [ "c4bd822e7b12a9008241d76db45b665f2fef180c", "592aa999d6a272856c9bfbdaac0cfba1bb37c24c" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Oct 22 09:48:06 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Oct 22 09:48:06 2008 +0200" }, "message": "Merge branch \u0027timers/range-hrtimers\u0027 into v28-range-hrtimers-for-linus-v2\n\nConflicts:\n\n\tkernel/time/tick-sched.c\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "c4bd822e7b12a9008241d76db45b665f2fef180c", "tree": "bd4b7b4e2e7db065c971eb264196f02e0b01ecff", "parents": [ "2515ddc6db8eb49a79f0fe5e67ff09ac7c81eab4" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Tue Oct 21 20:17:35 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Tue Oct 21 20:53:24 2008 +0200" }, "message": "NOHZ: fix thinko in the timer restart code path\n\ncommit fb02fbc14d17837b4b7b02dbb36142c16a7bf208 (NOHZ: restart tick\ndevice from irq_enter())\n\nsolves the problem of stale jiffies when long running softirqs happen\nin a long idle sleep period, but it has a major thinko in it:\n\nWhen the interrupt which came in _is_ the timer interrupt which should\nexpire ts-\u003esched_timer then we cancel and rearm the timer _before_ it\ngets expired in hrtimer_interrupt() to the next period. That means the\ncall back function is not called. This game can go on for ever :(\n\nPrevent this by making sure to only rearm the timer when the expiry\ntime is more than one tick_period away. Otherwise keep it running as\nit is either already expired or will expiry at the right point to\nupdate jiffies.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nTested-by: Venkatesch Pallipadi \u003cvenkatesh.pallipadi@intel.com\u003e\n" }, { "commit": "c465a76af658b443075d6efee1c3131257643020", "tree": "63c28c9fab02dedec7f03cee4a3ef7fe4dc1c072", "parents": [ "2d42244ae71d6c7b0884b5664cf2eda30fb2ae68", "1b02469088ac7a13d7e622b618b7410d0f1ce5ec", "fb02fbc14d17837b4b7b02dbb36142c16a7bf208", "d40e944c25fb4642adb2a4c580a48218a9f3f824", "1508487e7f16d992ad23cabd3712563ff912f413", "322acf6585f3c4e82ee32a246b0483ca0f6ad3f4" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Oct 20 13:14:06 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Oct 20 13:14:06 2008 +0200" }, "message": "Merge branches \u0027timers/clocksource\u0027, \u0027timers/hrtimers\u0027, \u0027timers/nohz\u0027, \u0027timers/ntp\u0027, \u0027timers/posixtimers\u0027 and \u0027timers/debug\u0027 into v28-timers-for-linus\n" }, { "commit": "870e2a284567714335d125c390366dce882d726f", "tree": "9efbf834eccda9d06a7a16f6ee12b0cc2b627a1f", "parents": [ "c5b77a3d3a716a5c61a1999d7f2a78e9c39fd1b0" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Sep 29 17:41:55 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Oct 20 11:51:30 2008 +0200" }, "message": "timer_list: add base address to clock base\n\nThe base address of a (per cpu) clock base is a useful debug info.\nAdd it and bump the version number of timer_lists.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "c5b77a3d3a716a5c61a1999d7f2a78e9c39fd1b0", "tree": "14e0c3d2c504fded2dd208c774a38c183f496183", "parents": [ "e67ef25a35b949561a9bd77693523ec94ab4a278" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Sep 29 17:31:41 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Oct 20 11:51:30 2008 +0200" }, "message": "timer_list: print cpu number of clockevents device\n\nThe per cpu clock events device output of timer_list lacks an\nassociation of the device to the cpu which is annoying when looking at\nthe output of /proc/timer_list from a 128 way system. \n\nAdd the CPU number info and mark the broadcast device in the device\nlist printout.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "e67ef25a35b949561a9bd77693523ec94ab4a278", "tree": "225d5c1df4532c57698d081c39306f21181eb38d", "parents": [ "0cfd81031a26717fe14380d18275f8e217571615" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Thu Sep 25 23:50:23 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Oct 20 11:51:30 2008 +0200" }, "message": "timer_list: print real timer address\n\nThe current timer_list output prints the address of the on stack copy\nof the active hrtimer instead of the hrtimer itself.\n\nPrint the address of the real timer instead.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "651dab4264e4ba0e563f5ff56f748127246e9065", "tree": "016630974bdcb00fe529b673f96d389e0fd6dc94", "parents": [ "40b8606253552109815786e5d4b0de98782d31f5", "2e532d68a2b3e2aa6b19731501222069735c741c" ], "author": { "name": "Arjan van de Ven", "email": "arjan@linux.intel.com", "time": "Fri Oct 17 09:20:26 2008 -0700" }, "committer": { "name": "Arjan van de Ven", "email": "arjan@linux.intel.com", "time": "Fri Oct 17 09:20:26 2008 -0700" }, "message": "Merge commit \u0027linus/master\u0027 into merge-linus\n\nConflicts:\n\n\tarch/x86/kvm/i8254.c\n" }, { "commit": "fb02fbc14d17837b4b7b02dbb36142c16a7bf208", "tree": "9df1d069c5612047c38a9f6d6dc801ee0369ae3c", "parents": [ "c34bec5a44e9486597d78e7a686b2f9088a0564c" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri Oct 17 10:01:23 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@apollo.(none)", "time": "Fri Oct 17 18:13:38 2008 +0200" }, "message": "NOHZ: restart tick device from irq_enter()\n\nWe did not restart the tick device from irq_enter() to avoid double\nreprogramming and extra events in the return immediate to idle case.\n\nBut long lasting softirqs can lead to a situation where jiffies become\nstale:\n\nidle()\n tick stopped (reprogrammed to next pending timer)\n halt()\n interrupt\n jiffies updated from irq_enter()\n interrupt handler\n softirq function 1 runs 20ms\n softirq function 2 arms a 10ms timer with a stale jiffies value\n jiffies updated from irq_exit()\n timer wheel has now an already expired timer\n (the one added in function 2)\n timer fires and timer softirq runs\n\nThis was discovered when debugging a timer problem which happend only\nwhen the ath5k driver is active. The debugging proved that there is a\nsoftirq function running for more than 20ms, which is a bug by itself.\n\nTo solve this we restart the tick timer right from irq_enter(), but do\nnot go through the other functions which are necessary to return from\nidle when need_resched() is set.\n\nReported-by: Elias Oltmanns \u003ceo@nebensachen.de\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nTested-by: Elias Oltmanns \u003ceo@nebensachen.de\u003e\n" }, { "commit": "c34bec5a44e9486597d78e7a686b2f9088a0564c", "tree": "dd538560814ea54ce8d3f46b935dd24127fba04e", "parents": [ "719254faa17ffedc87ba0fadb9b34e535c9758d5" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri Oct 17 10:04:34 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@apollo.(none)", "time": "Fri Oct 17 18:13:38 2008 +0200" }, "message": "NOHZ: split tick_nohz_restart_sched_tick()\n\nSplit out the clock event device reprogramming. Preparatory\npatch.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "719254faa17ffedc87ba0fadb9b34e535c9758d5", "tree": "6afe1e9f2175aa5394cf6e0fc7c84afef0be3e9b", "parents": [ "2e532d68a2b3e2aa6b19731501222069735c741c" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri Oct 17 09:59:47 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@apollo.(none)", "time": "Fri Oct 17 18:13:38 2008 +0200" }, "message": "NOHZ: unify the nohz function calls in irq_enter()\n\nWe have two separate nohz function calls in irq_enter() for no good\nreason. Just call a single NOHZ function from irq_enter() and call\nthe bits in the tick code.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "e533b227055598b1f7dc8503a3b4f36b14b9da8a", "tree": "28fec4125eac45c8e2fac75b3d10ff5cd987d2f6", "parents": [ "0999d978dcdcf59350dafa25afd70def9f924eee", "6b2ada82101a08e2830fb29d7dc9b858be637dd4" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 16 15:17:40 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 16 15:17:40 2008 -0700" }, "message": "Merge branch \u0027core-v28-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027core-v28-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n do_generic_file_read: s/EINTR/EIO/ if lock_page_killable() fails\n softirq, warning fix: correct a format to avoid a warning\n softirqs, debug: preemption check\n x86, pci-hotplug, calgary / rio: fix EBDA ioremap()\n IO resources, x86: ioremap sanity check to catch mapping requests exceeding, fix\n IO resources, x86: ioremap sanity check to catch mapping requests exceeding the BAR sizes\n softlockup: Documentation/sysctl/kernel.txt: fix softlockup_thresh description\n dmi scan: warn about too early calls to dmi_check_system()\n generic: redefine resource_size_t as phys_addr_t\n generic: make PFN_PHYS explicitly return phys_addr_t\n generic: add phys_addr_t for holding physical addresses\n softirq: allocate less vectors\n IO resources: fix/remove printk\n printk: robustify printk, update comment\n printk: robustify printk, fix #2\n printk: robustify printk, fix\n printk: robustify printk\n\nFixed up conflicts in:\n\tarch/powerpc/include/asm/types.h\n\tarch/powerpc/platforms/Kconfig.cputype\nmanually.\n" }, { "commit": "9ba16087d9f996a93ab6f4453a52a4b24bc1f25c", "tree": "98a292c556b646aec40ce137b1ec689b3469f120", "parents": [ "a25d644fc0e232f242d1f3baa63c149c42536ff0" ], "author": { "name": "Jan Beulich", "email": "jbeulich@novell.com", "time": "Wed Oct 15 22:01:38 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 16 11:21:31 2008 -0700" }, "message": "Kconfig: eliminate \"def_bool n\" constructs\n\nUsing \"def_bool n\" is pointless, simply using bool here appears more\nappropriate.\n\nFurther, retaining such options that don\u0027t have a prompt and aren\u0027t\nselected by anything seems also at least questionable.\n\nSigned-off-by: Jan Beulich \u003cjbeulich@novell.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Tony Luck \u003ctony.luck@intel.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Bartlomiej Zolnierkiewicz \u003cbzolnier@gmail.com\u003e\nCc: Sam Ravnborg \u003csam@ravnborg.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6b2ada82101a08e2830fb29d7dc9b858be637dd4", "tree": "c0580c250211f8773674f3a4f7cd575818f153cc", "parents": [ "278429cff8809958d25415ba0ed32b59866ab1a8", "3b7ecb5d2ffde82efd1b1bcc6780dc8a019acf02", "77af7e3403e7314c47b0c07fbc5e4ef21d939532", "15160716eea5591eb31f40fd4dba56d83bea4209", "1fa63a817d27af7dc0d5ed454eb8fe5dec65fac7", "85462323555dda749f1c5373a8d72679464c968d" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Oct 15 12:48:44 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Oct 15 12:48:44 2008 +0200" }, "message": "Merge branches \u0027core/softlockup\u0027, \u0027core/softirq\u0027, \u0027core/resources\u0027, \u0027core/printk\u0027 and \u0027core/misc\u0027 into core-v28-for-linus\n" }, { "commit": "8083e4ad970e4eb567e31037060cdd4ba346f0c0", "tree": "330e6dc1dbb7c7db13d14f3681d4a51f62708329", "parents": [ "e9d95bf7eb929b9ddc9af9f4327b76c77ed4c7d6" ], "author": { "name": "venkatesh.pallipadi@intel.com", "email": "venkatesh.pallipadi@intel.com", "time": "Mon Aug 04 11:59:11 2008 -0700" }, "committer": { "name": "Dave Jones", "email": "davej@redhat.com", "time": "Thu Oct 09 13:52:44 2008 -0400" }, "message": "[CPUFREQ][5/6] cpufreq: Changes to get_cpu_idle_time_us(), used by ondemand governor\n\nexport get_cpu_idle_time_us() for it to be used in ondemand governor.\nLast update time can be current time when the CPU is currently non-idle,\naccounting for the busy time since last idle.\n\nSigned-off-by: Venkatesh Pallipadi \u003cvenkatesh.pallipadi@intel.com\u003e\nSigned-off-by: Dave Jones \u003cdavej@redhat.com\u003e\n" }, { "commit": "07454bfff151d2465ada809bbaddf3548cc1097c", "tree": "fae1802b291e57c0376f9deddcbd8bf539587940", "parents": [ "2165f631f0e1d4e9a1ee425ef05cb727352285e0" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Sat Oct 04 10:51:07 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Sat Oct 04 10:51:07 2008 +0200" }, "message": "clockevents: check broadcast tick device not the clock events device\n\nImpact: jiffies increment too fast.\n\nHugh Dickins noted that with NOHZ\u003dn and HIGHRES\u003dn jiffies get\nincremented too fast. The reason is a wrong check in the broadcast\nenter/exit code, which keeps the local apic timer in periodic mode\nwhen the switch happens.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "ccc7dadf736639da86f3e0c86832c11a66fc8221", "tree": "3f1c0df0a291fec4a10d72cc1ab278ad81e697c5", "parents": [ "b00c1a99e7758f794923c61e5cd55268d61c9469" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Sep 29 15:47:42 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Sep 29 17:09:14 2008 +0200" }, "message": "hrtimer: prevent migration of per CPU hrtimers\n\nImpact: per CPU hrtimers can be migrated from a dead CPU\n\nThe hrtimer code has no knowledge about per CPU timers, but we need to\nprevent the migration of such timers and warn when such a timer is\nactive at migration time.\n\nExplicitely mark the timers as per CPU and use a more understandable\nmode descriptor for the interrupts safe unlocked callback mode, which\nis used by hrtimer_sleeper and the scheduler code.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "d40e944c25fb4642adb2a4c580a48218a9f3f824", "tree": "9be7107440704a84d17f9dde12991915931c5279", "parents": [ "5cd1c9c5cf30d4b33df3d3f74d8142f278d536b7" ], "author": { "name": "Roman Zippel", "email": "zippel@linux-m68k.org", "time": "Mon Sep 22 14:42:44 2008 -0700" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Sep 24 17:33:13 2008 +0200" }, "message": "ntp: improve adjtimex frequency rounding\n\nChange PPM_SCALE_INV_SHIFT so that it doesn\u0027t throw away any input bits\n(19 is the amount of the factor 2 in PPM_SCALE), the output frequency\ncan then be calculated back to its input value, as the inverse divide\nproduce a slightly larger value, which is then correctly rounded by the\nfinal shift.\n\nReported-by: Martin Ziegler \u003cziegler@uni-freiburg.de\u003e\nSigned-off-by: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: John Stultz \u003cjohnstul@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "5cd1c9c5cf30d4b33df3d3f74d8142f278d536b7", "tree": "6d74ddeff7e9a044d961d36db13071c158f0557a", "parents": [ "eb3f938fd6292dc79f43a5fe14784b044776e9f0" ], "author": { "name": "Roman Zippel", "email": "zippel@linux-m68k.org", "time": "Mon Sep 22 14:42:43 2008 -0700" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Sep 24 17:33:13 2008 +0200" }, "message": "timekeeping: fix rounding problem during clock update\n\nDue to a rounding problem during a clock update it\u0027s possible for readers\nto observe the clock jumping back by 1nsec. The following simplified\nexample demonstrates the problem:\n\ncycle\txtime\n0\t0\n1000\t999999.6\n2000\t1999999.2\n3000\t2999998.8\n...\n\n1500 \u003d\t1499999.4\n\u003d\t0.0 + 1499999.4\n\u003d\t999999.6 + 499999.8\n\nWhen reading the clock only the full nanosecond part is used, while\ntimekeeping internally keeps nanosecond fractions. If the clock is now\nupdated at cycle 1500 here, a nanosecond is missing due to the truncation.\n\nThe simple fix is to round up the xtime value during the update, this also\nchanges the distance to the reference time, but the adjustment will\nautomatically take care that it stays under control.\n\nSigned-off-by: Roman Zippel \u003czippel@linux-m68k.org\u003e\nSigned-off-by: John Stultz \u003cjohnstul@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "eb3f938fd6292dc79f43a5fe14784b044776e9f0", "tree": "eb0b485e95af3c6c15871992a9a6d0977869c9e7", "parents": [ "77dd3b3bd23111040c504be6bd873a5ad09f02df" ], "author": { "name": "Maciej W. Rozycki", "email": "macro@linux-mips.org", "time": "Mon Sep 22 14:42:40 2008 -0700" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Sep 24 17:33:12 2008 +0200" }, "message": "ntp: let update_persistent_clock() sleep\n\nThis is a change that makes the 11-minute RTC update be run in the process\ncontext. This is so that update_persistent_clock() can sleep, which may\nbe required for certain types of RTC hardware -- most notably I2C devices.\n\nSigned-off-by: Maciej W. Rozycki \u003cmacro@linux-mips.org\u003e\nCc: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: David Brownell \u003cdavid-b@pacbell.net\u003e\nAcked-by: Alessandro Zummo \u003ca.zummo@towertech.it\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "f8e256c687eb53850685747757c8d75e58756e15", "tree": "56a406943bb27888be8c814a44958b7314b46f29", "parents": [ "09bfeea13cea843fb03eaa96b5d891fa0abdcc90" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Sep 23 13:00:57 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Sep 23 12:57:00 2008 +0200" }, "message": "timers: fix build error in !oneshot case\n\n kernel/time/tick-common.c: In function ‘tick_setup_periodic’:\n kernel/time/tick-common.c:113: error: implicit declaration of function ‘tick_broadcast_oneshot_active’\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "27ce4cb4a0c7cf59b9a9952266883862f2e4c99f", "tree": "066245d42877d8535853e3199b33cdf1110eb8e4", "parents": [ "302745699c1b675b5d2a1af87271de10e4d96b6a" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Sep 22 19:04:02 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Tue Sep 23 11:38:53 2008 +0200" }, "message": "clockevents: prevent mode mismatch on cpu online\n\nImpact: timer hang on CPU online observed on AMD C1E systems\n\nWhen a CPU is brought online then the broadcast machinery can\nbe in the one shot state already. Check this and setup the timer \ndevice of the new CPU in one shot mode so the broadcast code\ncan pick up the next_event value correctly.\n\nAnother AMD C1E oddity, as we switch to broadcast immediately and\nnot after the full bring up via the ACPI cpu idle code.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "302745699c1b675b5d2a1af87271de10e4d96b6a", "tree": "4efc6c93c038e14021fa10b1eb358695f45f2130", "parents": [ "49d670fb8dd62d3ed4e3ed2513538ea65b051aed" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Sep 22 19:02:25 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Tue Sep 23 11:38:53 2008 +0200" }, "message": "clockevents: check broadcast device not tick device\n\nImpact: Possible hang on CPU online observed on AMD C1E machines.\n\nThe broadcast setup code looks at the mode of the tick device to\ndetermine whether it needs to be shut down or setup. This is wrong\nwhen the broadcast mode is set to one shot already. This can happen\nwhen a CPU is brought online as it goes through the periodic setup\nfirst.\n\nThe problem went unnoticed as sane systems do not call into that code\nbefore the switch to one shot for the clock event device happens.\nThe AMD C1E idle routine switches over immediately and thereby shuts\ndown the just setup device before the first interrupt happens.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "49d670fb8dd62d3ed4e3ed2513538ea65b051aed", "tree": "7d571897b5407abc25b776d4738e4af3ea0a5940", "parents": [ "4faac97d44ac27bdbb010a9c3597401a8f89341f" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Sep 22 18:56:01 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Tue Sep 23 11:38:53 2008 +0200" }, "message": "clockevents: prevent stale tick_next_period for onlining CPUs\n\nImpact: possible hang on CPU onlining in timer one shot mode.\n\nThe tick_next_period variable is only used during boot on nohz/highres\nenabled systems, but for CPU onlining it needs to be maintained when\nthe per cpu clock events device operates in one shot mode.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "6441402b1f173fa38e561d3cee7c01c32e5281ad", "tree": "fd7c81337354f39e44581530d499bcdda06d76c4", "parents": [ "72d31053f62c4bc464c2783974926969614a8649" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Sep 22 18:46:37 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Tue Sep 23 11:38:52 2008 +0200" }, "message": "clockevents: prevent cpu online to interfere with nohz\n\nImpact: rare hang which can be triggered on CPU online.\n\ntick_do_timer_cpu keeps track of the CPU which updates jiffies\nvia do_timer. The value -1 is used to signal, that currently no\nCPU is doing this. There are two cases, where the variable can \nhave this state:\n\n boot:\n necessary for systems where the boot cpu id can be !\u003d 0\n\n nohz long idle sleep:\n When the CPU which did the jiffies update last goes into\n a long idle sleep it drops the update jiffies duty so\n another CPU which is not idle can pick it up and keep\n jiffies going.\n\nUsing the same value for both situations is wrong, as the CPU online\ncode can see the -1 state when the timer of the newly onlined CPU is\nsetup. The setup for a newly onlined CPU goes through periodic mode\nand can pick up the do_timer duty without being aware of the nohz /\nhighres mode of the already running system.\n\nUse two separate states and make them constants to avoid magic\nnumbers confusion. \n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "2344abbcbdb82140050e8be29d3d55e4f6fe860b", "tree": "46c1842fc2a47aa4d7ee0c2c558f54bc50772b69", "parents": [ "f1926ce63b996b42772b39e4b47bb4ef4ba748b4" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Tue Sep 16 11:32:50 2008 -0700" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Tue Sep 16 13:47:02 2008 -0700" }, "message": "clockevents: make device shutdown robust\n\nThe device shut down does not cleanup the next_event variable of the\nclock event device. So when the device is reactivated the possible\nstale next_event value can prevent the device to be reprogrammed as it\nclaims to wait on a event already.\n\nThis is the root cause of the resurfacing suspend/resume problem,\nwhere systems need key press to come back to life.\n\nFix this by setting next_event to KTIME_MAX when the device is shut\ndown. Use a separate function for shutdown which takes care of that\nand only keep the direct set mode call in the broadcast code, where we\ncan not touch the next_event value.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "61c22c34c6f80a8e89cff5ff717627c54cc14fd4", "tree": "33349263152d3ed4fd7d65e4c3d60340e6676b5c", "parents": [ "82a28c794f27aac17d7a3ebd7f14d731a11a5532" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Tue Sep 09 21:38:57 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Tue Sep 09 22:20:01 2008 +0200" }, "message": "clockevents: remove WARN_ON which was used to gather information\n\nThe issue of the endless reprogramming loop due to a too small\nmin_delta_ns was fixed with the previous updates of the clock events\ncode, but we had no information about the spread of this problem. I\nadded a WARN_ON to get automated information via kerneloops.org and to\nget some direct reports, which allowed me to analyse the affected\nmachines.\n\nThe WARN_ON has served its purpose and would be annoying for a release\nkernel. Remove it and just keep the information about the increase of\nthe min_delta_ns value.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "704af52bd13a5d9f3c60c496c68e752fafdfb434", "tree": "31ee65210e45b3991a184d3a6dda395a573e97eb", "parents": [ "4ce105d30e08fb8a1783c55a0e48aa3fa200c455" ], "author": { "name": "Arjan van de Ven", "email": "arjan@linux.intel.com", "time": "Sun Sep 07 16:10:20 2008 -0700" }, "committer": { "name": "Arjan van de Ven", "email": "arjan@linux.intel.com", "time": "Sun Sep 07 16:10:20 2008 -0700" }, "message": "hrtimer: show the timer ranges in /proc/timer_list\n\nto help debugging and visibility of timer ranges, show them\nin the existing timer list in /proc/timer_list\n\nSigned-off-by: Arjan van de Ven \u003carjan@linux.intel.com\u003e\n" }, { "commit": "f5325225658737e6c9cb8e24373e2c281a90be2a", "tree": "f1daf00b394b543876b6ffbfd67c050c3bb1b114", "parents": [ "4747832b56a95dbeb0cef4714e6fcc766eed0a95", "4ab6a219113197425ac112e35e1ec8062c69888e" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Sep 06 19:33:26 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Sep 06 19:33:26 2008 -0700" }, "message": "Merge branch \u0027timers-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027timers-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n clocksource, acpi_pm.c: check for monotonicity\n clocksource, acpi_pm.c: use proper read function also in errata mode\n ntp: fix calculation of the next jiffie to trigger RTC sync\n x86: HPET: read back compare register before reading counter\n x86: HPET fix moronic 32/64bit thinko\n clockevents: broadcast fixup possible waiters\n HPET: make minimum reprogramming delta useful\n clockevents: prevent endless loop lockup\n clockevents: prevent multiple init/shutdown\n clockevents: enforce reprogram in oneshot setup\n clockevents: prevent endless loop in periodic broadcast handler\n clockevents: prevent clockevent event_handler ending up handler_noop\n" }, { "commit": "4ff4b9e19a80b73959ebeb28d1df40176686f0a8", "tree": "0b9068da53ae13d253d7c21a76a58be9cc5f7fc3", "parents": [ "72d43d9bc9210d24d09202eaf219eac09e17b339" ], "author": { "name": "Maciej W. Rozycki", "email": "macro@linux-mips.org", "time": "Fri Sep 05 14:05:31 2008 -0700" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Sep 06 15:31:48 2008 +0200" }, "message": "ntp: fix calculation of the next jiffie to trigger RTC sync\n\nWe have a bug in the calculation of the next jiffie to trigger the RTC\nsynchronisation. The aim here is to run sync_cmos_clock() as close as\npossible to the middle of a second. Which means we want this function to\nbe called less than or equal to half a jiffie away from when now.tv_nsec\nequals 5e8 (500000000).\n\nIf this is not the case for a given call to the function, for this purpose\ninstead of updating the RTC we calculate the offset in nanoseconds to the\nnext point in time where now.tv_nsec will be equal 5e8. The calculated\noffset is then converted to jiffies as these are the unit used by the\ntimer.\n\nHovewer timespec_to_jiffies() used here uses a ceil()-type rounding mode,\nwhere the resulting value is rounded up. As a result the range of\nnow.tv_nsec when the timer will trigger is from 5e8 to 5e8 + TICK_NSEC\nrather than the desired 5e8 - TICK_NSEC / 2 to 5e8 + TICK_NSEC / 2.\n\nAs a result if for example sync_cmos_clock() happens to be called at the\ntime when now.tv_nsec is between 5e8 + TICK_NSEC / 2 and 5e8 to 5e8 +\nTICK_NSEC, it will simply be rescheduled HZ jiffies later, falling in the\nsame range of now.tv_nsec again. Similarly for cases offsetted by an\ninteger multiple of TICK_NSEC.\n\nThis change addresses the problem by subtracting TICK_NSEC / 2 from the\nnanosecond offset to the next point in time where now.tv_nsec will be\nequal 5e8, effectively shifting the following rounding in\ntimespec_to_jiffies() so that it produces a rounded-to-nearest result.\n\nSigned-off-by: Maciej W. Rozycki \u003cmacro@linux-mips.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "77dd3b3bd23111040c504be6bd873a5ad09f02df", "tree": "119ddcdf89d6a593a8fefea530249084559eeb44", "parents": [ "916c7a855174e3b53d182b97a26b2e27a29726a1", "70bb08962ea9bd50797ae9f16b2493f5f7c65053" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Sep 06 15:31:03 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Sep 06 15:31:03 2008 +0200" }, "message": "Merge branch \u0027linus\u0027 into timers/ntp\n" } ], "next": "7300711e8c6824fcfbd42a126980ff50439d8dd0" }