)]}' { "log": [ { "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": "7300711e8c6824fcfbd42a126980ff50439d8dd0", "tree": "20183d1ce4fa8237042644b2a79fbf01471da18d", "parents": [ "7cfb0435330364f90f274a26ecdc5f47f738498c" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Sat Sep 06 03:01:45 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Sat Sep 06 07:21:17 2008 +0200" }, "message": "clockevents: broadcast fixup possible waiters\n\nUntil the C1E patches arrived there where no users of periodic broadcast\nbefore switching to oneshot mode. Now we need to trigger a possible\nwaiter for a periodic broadcast when switching to oneshot mode.\nOtherwise we can starve them for ever.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "56c7426b3951e4f35a71d695f1c982989399d6fd", "tree": "26001a24308baceab1ff36eb8ab1ed43fb831a4f", "parents": [ "b380b0d4f7dffcc235c0facefa537d4655619101" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Mon Sep 01 16:44:23 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Sep 05 18:14:08 2008 +0200" }, "message": "sched_clock: fix NOHZ interaction\n\nIf HLT stops the TSC, we\u0027ll fail to account idle time, thereby inflating the\nactual process times. Fix this by re-calibrating the clock against GTOD when\nleaving nohz mode.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nTested-by: Avi Kivity \u003cavi@qumranet.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "1fb9b7d29d8e85ba3196eaa7ab871bf76fc98d36", "tree": "1fbefa54e16e76f76616202d8abf9607725afeff", "parents": [ "9c17bcda991000351cb2373f78be7e4b1c44caa3" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Sep 03 21:37:14 2008 +0000" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri Sep 05 11:11:53 2008 +0200" }, "message": "clockevents: prevent endless loop lockup\n\nThe C1E/HPET bug reports on AMDX2/RS690 systems where tracked down to a\ntoo small value of the HPET minumum delta for programming an event.\n\nThe clockevents code needs to enforce an interrupt event on the clock event\ndevice in some cases. The enforcement code was stupid and naive, as it just\nadded the minimum delta to the current time and tried to reprogram the device.\nWhen the minimum delta is too small, then this loops forever.\n\nAdd a sanity check. Allow reprogramming to fail 3 times, then print a warning\nand double the minimum delta value to make sure, that this does not happen again.\nUse the same function for both tick-oneshot and tick-broadcast code.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "9c17bcda991000351cb2373f78be7e4b1c44caa3", "tree": "769385b50e512a3aafa8735be23c199bf83c56e7", "parents": [ "7205656ab48da29a95d7f55e43a81db755d3cb3a" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Sep 03 21:37:08 2008 +0000" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri Sep 05 11:11:52 2008 +0200" }, "message": "clockevents: prevent multiple init/shutdown\n\nWhile chasing the C1E/HPET bugreports I went through the clock events\ncode inch by inch and found that the broadcast device can be initialized\nand shutdown multiple times. Multiple shutdowns are not critical, but\nuseless waste of time. Multiple initializations are simply broken. Another\nCPU might have the device in use already after the first initialization and\nthe second init could just render it unusable again.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "7205656ab48da29a95d7f55e43a81db755d3cb3a", "tree": "7721904e6912a9dcd09fc4041dfb07807c2ef4b7", "parents": [ "d4496b39559c6d43f83e4c08b899984f8b8089b5" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Sep 03 21:37:03 2008 +0000" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri Sep 05 11:11:52 2008 +0200" }, "message": "clockevents: enforce reprogram in oneshot setup\n\nIn tick_oneshot_setup we program the device to the given next_event,\nbut we do not check the return value. We need to make sure that the\ndevice is programmed enforced so the interrupt handler engine starts\nworking. Split out the reprogramming function from tick_program_event()\nand call it with the device, which was handed in to tick_setup_oneshot().\nSet the force argument, so the devices is firing an interrupt.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "d4496b39559c6d43f83e4c08b899984f8b8089b5", "tree": "2d2007eab7942fef1c4dee43f7be24e3bfbcfe62", "parents": [ "7c1e76897492d92b6a1c2d6892494d39ded9680c" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Sep 03 21:36:57 2008 +0000" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri Sep 05 11:11:51 2008 +0200" }, "message": "clockevents: prevent endless loop in periodic broadcast handler\n\nThe reprogramming of the periodic broadcast handler was broken,\nwhen the first programming returned -ETIME. The clockevents code\nstores the new expiry value in the clock events device next_event field\nonly when the programming time has not been elapsed yet. The loop in\nquestion calculates the new expiry value from the next_event value\nand therefor never increases.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "7c1e76897492d92b6a1c2d6892494d39ded9680c", "tree": "ea04e1be252e176fe5a665a28fd1c26a562cb1fa", "parents": [ "d210baf53b699fc61aa891c177b71d7082d3b957" ], "author": { "name": "Venkatesh Pallipadi", "email": "venkatesh.pallipadi@intel.com", "time": "Wed Sep 03 21:36:50 2008 +0000" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri Sep 05 11:11:51 2008 +0200" }, "message": "clockevents: prevent clockevent event_handler ending up handler_noop\n\nThere is a ordering related problem with clockevents code, due to which\nclockevents_register_device() called after tickless/highres switch\nwill not work. The new clockevent ends up with clockevents_handle_noop as\nevent handler, resulting in no timer activity.\n\nThe problematic path seems to be\n\n* old device already has hrtimer_interrupt as the event_handler\n* new clockevent device registers with a higher rating\n* tick_check_new_device() is called\n * clockevents_exchange_device() gets called\n * old-\u003eevent_handler is set to clockevents_handle_noop\n * tick_setup_device() is called for the new device\n * which sets new-\u003eevent_handler using the old-\u003eevent_handler which is noop.\n\nChange the ordering so that new device inherits the proper handler.\n\nThis does not have any issue in normal case as most likely all the clockevent\ndevices are setup before the highres switch. But, can potentially be affecting\nsome corner case where HPET force detect happens after the highres switch.\nThis was a problem with HPET in MSI mode code that we have been experimenting\nwith.\n\nSigned-off-by: Venkatesh Pallipadi \u003cvenkatesh.pallipadi@intel.com\u003e\nSigned-off-by: Shaohua Li \u003cshaohua.li@intel.com\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "3c4fbe5e01d7e5309be5045e7ae0db20a049e6dc", "tree": "550195cb1a2ed58bc343e9a4f54d773e8abd5f90", "parents": [ "6a55617ed5d1aa62b850de2cf66f5ede2eef4825" ], "author": { "name": "Miao Xie", "email": "miaox@cn.fujitsu.com", "time": "Wed Aug 20 16:37:38 2008 -0700" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Aug 21 09:54:06 2008 +0200" }, "message": "nohz: fix wrong event handler after online an offlined cpu\n\nOn the tickless system(CONFIG_NO_HZ\u003dy and CONFIG_HIGH_RES_TIMERS\u003dn), after\nI made an offlined cpu online, I found this cpu\u0027s event handler was\ntick_handle_periodic, not tick_nohz_handler.\n\nAfter debuging, I found this bug was caused by the wrong tick mode. the\ntick mode is not changed to NOHZ_MODE_INACTIVE when the cpu is offline.\n\nThis patch fixes this bug.\n\nSigned-off-by: Miao Xie \u003cmiaox@cn.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "e4e4e534faa3c2be4e165ce414f44b76ada7208c", "tree": "615280ce53bdba4f99c95616d2a1527c3b863c39", "parents": [ "39675e89fb472c1b9c8e740e00acb1df2bbc6be7" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Apr 14 08:50:02 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Jul 31 17:20:29 2008 +0200" }, "message": "sched clock: revert various sched_clock() changes\n\nFound an interactivity problem on a quad core test-system - simple\nCPU loops would occasionally delay the system un an unacceptable way.\n\nAfter much debugging with Peter Zijlstra it turned out that the problem\nis caused by the string of sched_clock() changes - they caused the CPU\nclock to jump backwards a bit - which confuses the scheduler arithmetics.\n\n(which is unsigned for performance reasons)\n\nSo revert:\n\n # c300ba2: sched_clock: and multiplier for TSC to gtod drift\n # c0c8773: sched_clock: only update deltas with local reads.\n # af52a90: sched_clock: stop maximum check on NO HZ\n # f7cce27: sched_clock: widen the max and min time\n\nThis solves the interactivity problems.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Mike Galbraith \u003cefault@gmx.de\u003e\n" }, { "commit": "0bc3cc03fa6e1c20aecb5a33356bcaae410640b9", "tree": "7dab4b0002298b45e31053fe0f37e5ff745682b7", "parents": [ "6524d938b3360504b43a1278b5a8403e85383d1a" ], "author": { "name": "Mike Travis", "email": "travis@sgi.com", "time": "Thu Jul 24 18:21:31 2008 -0700" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Jul 26 16:40:33 2008 +0200" }, "message": "cpumask: change cpumask_of_cpu_ptr to use new cpumask_of_cpu\n\n * Replace previous instances of the cpumask_of_cpu_ptr* macros\n with a the new (lvalue capable) generic cpumask_of_cpu().\n\nSigned-off-by: Mike Travis \u003ctravis@sgi.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Jack Steiner \u003csteiner@sgi.com\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "ecc8b655b38a880b578146895e0e1e2d477ca2c0", "tree": "4acce96bac00909fa9472f0c0669714243ea5bee", "parents": [ "2528ce3237be4e900f5eaa455490146e1422e424", "e338125b8a886923ba8367207c144764dc352584" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jul 24 12:55:01 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jul 24 12:55:01 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 nohz: adjust tick_nohz_stop_sched_tick() call of s390 as well\n nohz: prevent tick stop outside of the idle loop\n" }, { "commit": "26dcce0fabbef75ae426461edf21b5030bad60f3", "tree": "56c64fa47dc29f7ea5a8fd0cab0459fb0a05a2bc", "parents": [ "d7b6de14a0ef8a376f9d57b867545b47302b7bfb", "eb6a12c2428d21a9f3e0f1a50e927d5fd80fc3d0" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Jul 23 18:37:44 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Jul 23 18:37:44 2008 -0700" }, "message": "Merge branch \u0027cpus4096-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027cpus4096-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (31 commits)\n NR_CPUS: Replace NR_CPUS in speedstep-centrino.c\n cpumask: Provide a generic set of CPUMASK_ALLOC macros, FIXUP\n NR_CPUS: Replace NR_CPUS in cpufreq userspace routines\n NR_CPUS: Replace per_cpu(..., smp_processor_id()) with __get_cpu_var\n NR_CPUS: Replace NR_CPUS in arch/x86/kernel/genapic_flat_64.c\n NR_CPUS: Replace NR_CPUS in arch/x86/kernel/genx2apic_uv_x.c\n NR_CPUS: Replace NR_CPUS in arch/x86/kernel/cpu/proc.c\n NR_CPUS: Replace NR_CPUS in arch/x86/kernel/cpu/mcheck/mce_64.c\n cpumask: Optimize cpumask_of_cpu in lib/smp_processor_id.c, fix\n cpumask: Use optimized CPUMASK_ALLOC macros in the centrino_target\n cpumask: Provide a generic set of CPUMASK_ALLOC macros\n cpumask: Optimize cpumask_of_cpu in lib/smp_processor_id.c\n cpumask: Optimize cpumask_of_cpu in kernel/time/tick-common.c\n cpumask: Optimize cpumask_of_cpu in drivers/misc/sgi-xp/xpc_main.c\n cpumask: Optimize cpumask_of_cpu in arch/x86/kernel/ldt.c\n cpumask: Optimize cpumask_of_cpu in arch/x86/kernel/io_apic_64.c\n cpumask: Replace cpumask_of_cpu with cpumask_of_cpu_ptr\n Revert \"cpumask: introduce new APIs\"\n cpumask: make for_each_cpu_mask a bit smaller\n net: Pass reference to cpumask variable in net/sunrpc/svc.c\n ...\n\nFix up trivial conflicts in drivers/cpufreq/cpufreq.c manually\n" }, { "commit": "d7b6de14a0ef8a376f9d57b867545b47302b7bfb", "tree": "46904d68a5a68f22e6c6baf3472edd4c37a39481", "parents": [ "30d38542ec777468bb6a31829076a2dbc5690e35", "4dca10a96041f78bed11ce9e4a5cfde813ec4ccb" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Jul 23 18:34:13 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Jul 23 18:34:13 2008 -0700" }, "message": "Merge branch \u0027core/softlockup-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027core/softlockup-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n softlockup: fix invalid proc_handler for softlockup_panic\n softlockup: fix watchdog task wakeup frequency\n softlockup: fix watchdog task wakeup frequency\n softlockup: show irqtrace\n softlockup: print a module list on being stuck\n softlockup: fix NMI hangs due to lock race - 2.6.26-rc regression\n softlockup: fix false positives on nohz if CPU is 100% idle for more than 60 seconds\n softlockup: fix softlockup_thresh fix\n softlockup: fix softlockup_thresh unaligned access and disable detection at runtime\n softlockup: allow panic on lockup\n" }, { "commit": "4a0b2b4dbe1335b8b9886ba3dc85a145d5d938ed", "tree": "c2d3a0f86ade5061a1bb9a14aa702323d729fd54", "parents": [ "36ce6dad6e3cb3f050ed41e0beac0070d2062b25" ], "author": { "name": "Andi Kleen", "email": "andi@firstfloor.org", "time": "Tue Jul 01 18:48:41 2008 +0200" }, "committer": { "name": "Greg Kroah-Hartman", "email": "gregkh@suse.de", "time": "Mon Jul 21 21:55:02 2008 -0700" }, "message": "sysdev: Pass the attribute to the low level sysdev show/store function\n\nThis allow to dynamically generate attributes and share show/store\nfunctions between attributes. Right now most attributes are generated\nby special macros and lots of duplicated code. With the attribute\npassed it\u0027s instead possible to attach some data to the attribute\nand then use that in shared low level functions to do different things.\n\nI need this for the dynamically generated bank attributes in the x86\nmachine check code, but it\u0027ll allow some further cleanups.\n\nI converted all users in tree to the new show/store prototype. It\u0027s a single\nhuge patch to avoid unbisectable sections.\n\nRuntime tested: x86-32, x86-64\nCompiled only: ia64, powerpc\nNot compile tested/only grep converted: sh, arm, avr32\n\nSigned-off-by: Andi Kleen \u003cak@linux.intel.com\u003e\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\n\n" }, { "commit": "c18a41fbbc500ac0307ffd2b0ae73c2af9d0b0ab", "tree": "4242e1bdd8200ef00b5ae5da5d717231fa90a430", "parents": [ "333cdd1f0e5e0aad6b7f8992291563bc7b14670b" ], "author": { "name": "Mike Travis", "email": "travis@sgi.com", "time": "Tue Jul 15 14:14:34 2008 -0700" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jul 18 22:02:59 2008 +0200" }, "message": "cpumask: Optimize cpumask_of_cpu in kernel/time/tick-common.c\n\n * Optimize various places where a pointer to the cpumask_of_cpu value\n will result in reducing stack pressure.\n\nSigned-off-by: Mike Travis \u003ctravis@sgi.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "9b610fda0df5d0f0b0c64242e37441ad1b384aac", "tree": "0ea14b15f2e6546f37fe18d8ac3dc83077ec0e55", "parents": [ "b8f8c3cf0a4ac0632ec3f0e15e9dc0c29de917af", "5b664cb235e97afbf34db9c4d77f08ebd725335e" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jul 18 19:53:16 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jul 18 19:53:16 2008 +0200" }, "message": "Merge branch \u0027linus\u0027 into timers/nohz\n" }, { "commit": "b8f8c3cf0a4ac0632ec3f0e15e9dc0c29de917af", "tree": "183825db00f4e9252603a51a1be6f8874a963dbc", "parents": [ "857f3fd7a496ddf4329345af65a4a2b16dd25fe8" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri Jul 18 17:27:28 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri Jul 18 18:10:28 2008 +0200" }, "message": "nohz: prevent tick stop outside of the idle loop\n\nJack Ren and Eric Miao tracked down the following long standing\nproblem in the NOHZ code:\n\n\tscheduler switch to idle task\n\tenable interrupts\n\nWindow starts here\n\n\t----\u003e interrupt happens (does not set NEED_RESCHED)\n\t \tirq_exit() stops the tick\n\n\t----\u003e interrupt happens (does set NEED_RESCHED)\n\n\treturn from schedule()\n\t\n\tcpu_idle(): preempt_disable();\n\nWindow ends here\n\nThe interrupts can happen at any point inside the race window. The\nfirst interrupt stops the tick, the second one causes the scheduler to\nrerun and switch away from idle again and we end up with the tick\ndisabled.\n\nThe fact that it needs two interrupts where the first one does not set\nNEED_RESCHED and the second one does made the bug obscure and extremly\nhard to reproduce and analyse. Kudos to Jack and Eric.\n\nSolution: Limit the NOHZ functionality to the idle loop to make sure\nthat we can not run into such a situation ever again.\n\ncpu_idle()\n{\n\tpreempt_disable();\n\n\twhile(1) {\n\t\t tick_nohz_stop_sched_tick(1); \u003c- tell NOHZ code that we\n\t\t \t\t\t are in the idle loop\n\n\t\t while (!need_resched())\n\t\t halt();\n\n\t\t tick_nohz_restart_sched_tick(); \u003c- disables NOHZ mode\n\t\t preempt_enable_no_resched();\n\t\t schedule();\n\t\t preempt_disable();\n\t}\n}\n\nIn hindsight we should have done this forever, but ... \n\n/me grabs a large brown paperbag.\n\nDebugged-by: Jack Ren \u003cjack.ren@marvell.com\u003e, \nDebugged-by: eric miao \u003ceric.y.miao@gmail.com\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n\n" }, { "commit": "82638844d9a8581bbf33201cc209a14876eca167", "tree": "961d7f9360194421a71aa644a9d0c176a960ce49", "parents": [ "9982fbface82893e77d211fbabfbd229da6bdde6", "63cf13b77ab785e87c867defa8545e6d4a989774" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jul 16 00:29:07 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jul 16 00:29:07 2008 +0200" }, "message": "Merge branch \u0027linus\u0027 into cpus4096\n\nConflicts:\n\n\tarch/x86/xen/smp.c\n\tkernel/sched_rt.c\n\tnet/iucv/iucv.c\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "1e09481365ce248dbb4eb06dad70129bb5807037", "tree": "c0cff5bef95c8b5e7486f144718ade9a06c284dc", "parents": [ "3e2f69fdd1b00166e7d589bce56b2d36a9e74374", "b9d2252c1e44fa83a4e65fdc9eb93db6297c55af" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jul 15 23:12:58 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jul 15 23:12:58 2008 +0200" }, "message": "Merge branch \u0027linus\u0027 into core/softlockup\n\nConflicts:\n\n\tkernel/softlockup.c\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "1a781a777b2f6ac46523fe92396215762ced624d", "tree": "4f34bb4aade85c0eb364b53d664ec7f6ab959006", "parents": [ "b9d2252c1e44fa83a4e65fdc9eb93db6297c55af", "42a2f217a5e324ed5f2373ab1b7a0a15187c4d6c" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jul 15 21:55:59 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jul 15 21:55:59 2008 +0200" }, "message": "Merge branch \u0027generic-ipi\u0027 into generic-ipi-for-linus\n\nConflicts:\n\n\tarch/powerpc/Kconfig\n\tarch/s390/kernel/time.c\n\tarch/x86/kernel/apic_32.c\n\tarch/x86/kernel/cpu/perfctr-watchdog.c\n\tarch/x86/kernel/i8259_64.c\n\tarch/x86/kernel/ldt.c\n\tarch/x86/kernel/nmi_64.c\n\tarch/x86/kernel/smpboot.c\n\tarch/x86/xen/smp.c\n\tinclude/asm-x86/hw_irq_32.h\n\tinclude/asm-x86/hw_irq_64.h\n\tinclude/asm-x86/mach-default/irq_vectors.h\n\tinclude/asm-x86/mach-voyager/irq_vectors.h\n\tinclude/asm-x86/smp.h\n\tkernel/Makefile\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "da6e88f4963385b1b649b043691d206fbb951913", "tree": "779a1a6cf04dad09dee0828ad4ece0927de1b5f3", "parents": [ "61d97f4fcf73d30864a52373a34093be25be6a03", "7dc9719682ce8c46215bc9a1bdc7ee0c38ada94b" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jul 15 10:39:57 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jul 15 10:39:57 2008 -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:\n x86: add PCI ID for 6300ESB force hpet\n x86: add another PCI ID for ICH6 force-hpet\n kernel-paramaters: document pmtmr\u003d command line option\n acpi_pm clccksource: fix printk format warning\n nohz: don\u0027t stop idle tick if softirqs are pending.\n pmtmr: allow command line override of ioport\n nohz: reduce jiffies polling overhead\n hrtimer: Remove unused variables in ktime_divns()\n hrtimer: remove warning in hres_timers_resume\n posix-timers: print RT watchdog message\n" }, { "commit": "17489c058e8c63ab5ebdc67ab52ca70d1bc270b1", "tree": "d0e0a3503967b11f6e86ebfaddf103a82fbea38f", "parents": [ "a3da5bf84a97d48cfaf66c6842470fc403da5121", "873a6ed6288b6c2c0d2cc84d3b2bf2fab9ba0181" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jul 14 13:54:49 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jul 14 13:54:49 2008 -0700" }, "message": "Merge branch \u0027sched/for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027sched/for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (76 commits)\n sched_clock: and multiplier for TSC to gtod drift\n sched_clock: record TSC after gtod\n sched_clock: only update deltas with local reads.\n sched_clock: fix calculation of other CPU\n sched_clock: stop maximum check on NO HZ\n sched_clock: widen the max and min time\n sched_clock: record from last tick\n sched: fix accounting in task delay accounting \u0026 migration\n sched: add avg-overlap support to RT tasks\n sched: terminate newidle balancing once at least one task has moved over\n sched: fix warning\n sched: build fix\n sched: sched_clock_cpu() based cpu_clock(), lockdep fix\n sched: export cpu_clock\n sched: make sched_{rt,fair}.c ifdefs more readable\n sched: bias effective_load() error towards failing wake_affine().\n sched: incremental effective_load()\n sched: correct wakeup weight calculations\n sched: fix mult overflow\n sched: update shares on wakeup\n ...\n" }, { "commit": "af52a90a14cdaa54ecbfb6e6982abb13466a4b56", "tree": "2488d6d7943b167987c33f984f7109c3dc4ae783", "parents": [ "f7cce27f5605b9e137b829a47949cb2d3c7e1cab" ], "author": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon Jul 07 14:16:52 2008 -0400" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jul 11 15:53:26 2008 +0200" }, "message": "sched_clock: stop maximum check on NO HZ\n\nWorking with ftrace I would get large jumps of 11 millisecs or more with\nthe clock tracer. This killed the latencing timings of ftrace and also\ncaused the irqoff self tests to fail.\n\nWhat was happening is with NO_HZ the idle would stop the jiffy counter and\nbefore the jiffy counter was updated the sched_clock would have a bad\ndelta jiffies to compare with the gtod with the maximum.\n\nThe jiffies would stop and the last sched_tick would record the last gtod.\nOn wakeup, the sched clock update would compare the gtod + delta jiffies\n(which would be zero) and compare it to the TSC. The TSC would have\ncorrectly (with a stable TSC) moved forward several jiffies. But because the\njiffies has not been updated yet the clock would be prevented from moving\nforward because it would appear that the TSC jumped too far ahead.\n\nThe clock would then virtually stop, until the jiffies are updated. Then\nthe next sched clock update would see that the clock was very much behind\nsince the delta jiffies is now correct. This would then jump the clock\nforward by several jiffies.\n\nThis caused ftrace to report several milliseconds of interrupts off\nlatency at every resume from NO_HZ idle.\n\nThis patch adds hooks into the nohz code to disable the checking of the\nmaximum clock update when nohz is in effect. It resumes the max check\nwhen nohz has updated the jiffies again.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nCc: Steven Rostedt \u003csrostedt@redhat.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "857f3fd7a496ddf4329345af65a4a2b16dd25fe8", "tree": "7bd1b0de6e82363beba60097529b72ac7de923f5", "parents": [ "7a14ce1d8c1d3a6118d406e64eaf9aa70375e085" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Fri Jul 11 11:09:22 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jul 11 11:17:04 2008 +0200" }, "message": "nohz: don\u0027t stop idle tick if softirqs are pending.\n\nIn case a cpu goes idle but softirqs are pending only an error message is\nprinted to the console. It may take a very long time until the pending\nsoftirqs will finally be executed. Worst case would be a hanging system.\n\nWith this patch the timer tick just continues and the softirqs will be\nexecuted after the next interrupt. Still a delay but better than a\nhanging system.\n\nCurrently we have at least two device drivers on s390 which under certain\ncircumstances schedule a tasklet from process context. This is a reason\nwhy we can end up with pending softirqs when going idle. Fixing these\ndrivers seems to be non-trivial.\nHowever there is no question that the drivers should be fixed.\nThis patch shouldn\u0027t be considered as a bug fix. It just is intended to\nkeep a system running even if device drivers are buggy.\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Jan Glauber \u003cjan.glauber@de.ibm.com\u003e\nCc: Stefan Weinhuber \u003cwein@de.ibm.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "aa276e1cafb3ce9d01d1e837bcd67e92616013ac", "tree": "d0ecb8fe8ae70fdaed8d97d317199180882671b5", "parents": [ "00dba56465228825ea806e3a7fc0aa6bba7bdc6c" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Jun 09 19:15:00 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jul 08 07:47:18 2008 +0200" }, "message": "x86, clockevents: add C1E aware idle function\n\nC1E on AMD machines is like C3 but without control from the OS. Up to\nnow we disabled the local apic timer for those machines as it stops\nwhen the CPU goes into C1E. This excludes those machines from high\nresolution timers / dynamic ticks, which hurts especially X2 based\nlaptops.\n\nThe current boot time C1E detection has another, more serious flaw\nas well: some BIOSes do not enable C1E until the ACPI processor module\nis loaded. This causes systems to stop working after that point.\n\nTo work nicely with C1E enabled machines we use a separate idle\nfunction, which checks on idle entry whether C1E was enabled in the\nInterrupt Pending Message MSR. This allows us to do timer broadcasting\nfor C1E and covers the late enablement of C1E as well.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "8691e5a8f691cc2a4fda0651e8d307aaba0e7d68", "tree": "6cb6767064d2d43441212566da2d83dcc9a0cd8e", "parents": [ "490f5de52a87063fcb40e3b22f61b0779603ff6d" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri Jun 06 11:18:06 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Jun 26 11:24:35 2008 +0200" }, "message": "smp_call_function: get rid of the unused nonatomic/retry argument\n\nIt\u0027s never used and the comments refer to nonatomic and retry\ninterchangably. So get rid of it.\n\nAcked-by: Jeremy Fitzhardinge \u003cjeremy.fitzhardinge@citrix.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "7a14ce1d8c1d3a6118d406e64eaf9aa70375e085", "tree": "01a0d9f785a849fc4242d024bd1afa7deb7c1bf6", "parents": [ "916941b2bfd9c4a8b66855f198ae16c3f51ef570" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 15:43:53 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri May 30 14:16:10 2008 +0200" }, "message": "nohz: reduce jiffies polling overhead\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "02ff375590ac4140d88afc76505df1ad45c6af59", "tree": "6c24cfb6d0e652f691325dc63afab1373b808442", "parents": [ "1c4cd6dd1d0fd3057bb6b8c87460049497889d1b" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 15:43:53 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri May 30 14:15:02 2008 +0200" }, "message": "softlockup: fix false positives on nohz if CPU is 100% idle for more than 60 seconds\n\nFix (probably theoretical only) rq-\u003eclock update bug:\nin tick_nohz_update_jiffies() [which is called on all irq\nentry on all cpus where the irq entry hits an idle cpu] we\ncall touch_softlockup_watchdog() before we update jiffies.\nThat works fine most of the time when idle timeouts are within\n60 seconds. But when an idle timeout is beyond 60 seconds,\njiffies is updated with a jump of more than 60 seconds,\nwhich causes a jump in cpu-clock of more than 60 seconds,\ntriggering a false positive.\n\nReported-by: David Miller \u003cdavem@davemloft.net\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "cad0e458d17c643c20c1d38f45a1d26125e6a622", "tree": "65328a74709595ca5012eafc951227f90100f8e2", "parents": [ "5d7bfd0c4d463d288422032c9903d0452dee141d" ], "author": { "name": "Mike Travis", "email": "travis@sgi.com", "time": "Mon May 12 21:21:13 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 18:39:06 2008 +0200" }, "message": "clocksource/events: use performance variant for_each_cpu_mask_nr\n\nChange references from for_each_cpu_mask to for_each_cpu_mask_nr\nwhere appropriate\n\nReviewed-by: Paul Jackson \u003cpj@sgi.com\u003e\nReviewed-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Mike Travis \u003ctravis@sgi.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "4f95f81a48623982879f4fa80c641933444afd18", "tree": "a1e6325a9b3ba3baf60911091ecb69212305204d", "parents": [ "4359a023a8c3b247b348c310bf510b23f3c1ab64" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Sat May 03 14:23:14 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Sat May 03 18:11:48 2008 +0200" }, "message": "clocksource: allow read access to available/current_clocksource\n\nThere is no harm, when users can read the info and we ask often enough\nduring debugging for this kind of information.\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: John Stultz \u003cjohnstul@us.ibm.com\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "4359a023a8c3b247b348c310bf510b23f3c1ab64", "tree": "be6479eada293e91c4a17b1d6b942a4a7846a86d", "parents": [ "4346f65426cbceb64794b468e4af6f5632d58c5e" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Fri May 02 12:49:40 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Sat May 03 18:11:48 2008 +0200" }, "message": "clocksource: Fix permissions for available_clocksource\n\nFile permissions for\n/sys/devices/system/clocksource/clocksource0/available_clocksource\nare 600 which allows write access. But this is in fact a read only\nfile. So change permissions to 400.\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: John Stultz \u003cjohnstul@us.ibm.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "7dffa3c673fbcf835cd7be80bb4aec8ad3f51168", "tree": "63264208ed97f18a74a5a7cd2e100cc2c4e13449", "parents": [ "8383c42399f394a89bd6c2f03632c53689bdde7a" ], "author": { "name": "Roman Zippel", "email": "zippel@linux-m68k.org", "time": "Thu May 01 04:34:41 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 01 08:03:59 2008 -0700" }, "message": "ntp: handle leap second via timer\n\nRemove the leap second handling from second_overflow(), which doesn\u0027t have to\ncheck for it every second anymore. With CONFIG_NO_HZ this also makes sure the\nleap second is handled close to the full second. Additionally this makes it\npossible to abort a leap second properly by resetting the STA_INS/STA_DEL\nstatus bits.\n\nSigned-off-by: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: 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": "8383c42399f394a89bd6c2f03632c53689bdde7a", "tree": "c3f3a42a546a4afe3746e5894bcd425dc5a3d0bb", "parents": [ "7fc5c78409479d826341b103bdf734cb4fb02436" ], "author": { "name": "Roman Zippel", "email": "zippel@linux-m68k.org", "time": "Thu May 01 04:34:39 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 01 08:03:59 2008 -0700" }, "message": "ntp: remove current_tick_length()\n\ncurrent_tick_length used to do a little more, but now it just returns\ntick_length, which we can also access directly at the few places, where it\u0027s\nneeded.\n\nSigned-off-by: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: 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": "7fc5c78409479d826341b103bdf734cb4fb02436", "tree": "e68d8edddd633a9ed410b304684343afacf36175", "parents": [ "153b5d054ac2d98ea0d86504884326b6777f683d" ], "author": { "name": "Roman Zippel", "email": "zippel@linux-m68k.org", "time": "Thu May 01 04:34:38 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 01 08:03:59 2008 -0700" }, "message": "ntp: rename TICK_LENGTH_SHIFT to NTP_SCALE_SHIFT\n\nAs TICK_LENGTH_SHIFT is used for more than just the tick length, the name\nisn\u0027t quite approriate anymore, so this renames it to NTP_SCALE_SHIFT.\n\nSigned-off-by: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: 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": "153b5d054ac2d98ea0d86504884326b6777f683d", "tree": "0512b4239959814a6cc6aa6c9e77abc36d3ab2f0", "parents": [ "9f14f669d18477fe3df071e2fa4da36c00acee8e" ], "author": { "name": "Roman Zippel", "email": "zippel@linux-m68k.org", "time": "Thu May 01 04:34:37 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 01 08:03:59 2008 -0700" }, "message": "ntp: support for TAI\n\nThis adds support for setting the TAI value (International Atomic Time). The\nvalue is reported back to userspace via timex (as we don\u0027t have a\nntp_gettime() syscall).\n\nSigned-off-by: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: 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": "9f14f669d18477fe3df071e2fa4da36c00acee8e", "tree": "84b5600017902ced77ee0cb9a4bc21a6768d22e5", "parents": [ "074b3b87941c99bc0ce35385b5817924b1ed0c23" ], "author": { "name": "Roman Zippel", "email": "zippel@linux-m68k.org", "time": "Thu May 01 04:34:36 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 01 08:03:58 2008 -0700" }, "message": "ntp: increase time_offset resolution\n\ntime_offset is already a 64bit value but its resolution barely used, so this\nmakes better use of it by replacing SHIFT_UPDATE with TICK_LENGTH_SHIFT.\n\nSide note: the SHIFT_HZ in SHIFT_UPDATE was incorrect for CONFIG_NO_HZ and the\nprimary reason for changing time_offset to 64bit to avoid the overflow.\n\nSigned-off-by: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: 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": "074b3b87941c99bc0ce35385b5817924b1ed0c23", "tree": "aa2d11a2df37d631236a28713873023632f74a91", "parents": [ "eea83d896e318bda54be2d2770d2c5d6668d11db" ], "author": { "name": "Roman Zippel", "email": "zippel@linux-m68k.org", "time": "Thu May 01 04:34:34 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 01 08:03:58 2008 -0700" }, "message": "ntp: increase time_freq resolution\n\nThis changes time_freq to a 64bit value and makes it static (the only outside\nuser had no real need to modify it). Intermediate values were already 64bit,\nso the change isn\u0027t that big, but it saves a little in shifts by replacing\nSHIFT_NSEC with TICK_LENGTH_SHIFT. PPM_SCALE is then used to convert between\nuser space and kernel space representation.\n\nSigned-off-by: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: 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": "eea83d896e318bda54be2d2770d2c5d6668d11db", "tree": "581f455e02ed3d03e543642b5d54b83dc75d47c7", "parents": [ "ee9851b218b8bafa22942b5404505ff3d2d34324" ], "author": { "name": "Roman Zippel", "email": "zippel@linux-m68k.org", "time": "Thu May 01 04:34:33 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 01 08:03:58 2008 -0700" }, "message": "ntp: NTP4 user space bits update\n\nThis adds a few more things from the ntp nanokernel related to user space.\nIt\u0027s now possible to select the resolution used of some values via STA_NANO\nand the kernel reports in which mode it works (pll/fll).\n\nIf some values for adjtimex() are outside the acceptable range, they are now\nsimply normalized instead of letting the syscall fail. I removed\nMOD_CLKA/MOD_CLKB as the mapping didn\u0027t really makes any sense, the kernel\ndoesn\u0027t support setting the clock.\n\nSigned-off-by: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: 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": "ee9851b218b8bafa22942b5404505ff3d2d34324", "tree": "82e5a421d18bd3d469afd9c4c2827a865b9f19b5", "parents": [ "f8bd2258e2d520dff28c855658bd24bdafb5102d" ], "author": { "name": "Roman Zippel", "email": "zippel@linux-m68k.org", "time": "Thu May 01 04:34:32 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 01 08:03:58 2008 -0700" }, "message": "ntp: cleanup ntp.c\n\nThis is mostly a style cleanup of ntp.c and extracts part of do_adjtimex as\nntp_update_offset(). Otherwise the functionality is still the same as before.\n\nSigned-off-by: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: 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": "f8bd2258e2d520dff28c855658bd24bdafb5102d", "tree": "d76db1dc858cb316bc7d5b8473f690a753fd2c93", "parents": [ "6f6d6a1a6a1336431a6cba60ace9e97c3a496a19" ], "author": { "name": "Roman Zippel", "email": "zippel@linux-m68k.org", "time": "Thu May 01 04:34:31 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 01 08:03:58 2008 -0700" }, "message": "remove div_long_long_rem\n\nx86 is the only arch right now, which provides an optimized for\ndiv_long_long_rem and it has the downside that one has to be very careful that\nthe divide doesn\u0027t overflow.\n\nThe API is a little akward, as the arguments for the unsigned divide are\nsigned. The signed version also doesn\u0027t handle a negative divisor and\nproduces worse code on 64bit archs.\n\nThere is little incentive to keep this API alive, so this converts the few\nusers to the new API.\n\nSigned-off-by: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: Ralf Baechle \u003cralf@linux-mips.org\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: john stultz \u003cjohnstul@us.ibm.com\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "71abb3af62dfa52930755f3b6497eafbe1d6ec85", "tree": "8e37f74017b800127538f6620820ea90b53169b5", "parents": [ "2418f4f28f8467b92a6177af32d05737ebf6206c" ], "author": { "name": "Roman Zippel", "email": "zippel@linux-m68k.org", "time": "Thu May 01 04:34:26 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 01 08:03:58 2008 -0700" }, "message": "convert a few do_div users\n\nThis converts a few users of do_div to div_[su]64 and this demonstrates nicely\nhow it can reduce some expressions to one-liners.\n\nSigned-off-by: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: 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": "c33fff0afbef4f0467c99e3f47ee7e98ae78c77e", "tree": "d6b5f8dc77aa21de95bbca76c6be6056026cc1d8", "parents": [ "ac41cfd19bf77424519b962f8205ede51fceaac6" ], "author": { "name": "Denis V. Lunev", "email": "den@openvz.org", "time": "Tue Apr 29 01:02:31 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Apr 29 08:06:22 2008 -0700" }, "message": "kernel: use non-racy method for proc entries creation\n\nUse proc_create()/proc_create_data() to make sure that -\u003eproc_fops and -\u003edata\nbe setup before gluing PDE to main tree.\n\nSigned-off-by: Denis V. Lunev \u003cden@openvz.org\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "126e01bf92dfc5f0ba91e88be02c473e1506d7d9", "tree": "fe883f07319193bfbec244becc43e64a22e64f95", "parents": [ "88a411c07b6fedcfc97b8dc51ae18540bd2beda0" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Apr 25 00:25:08 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Apr 25 00:25:08 2008 +0200" }, "message": "softlockup: fix NOHZ wakeup\n\nDavid Miller reported:\n\n|---------------\u003e\nthe following commit:\n\n| commit 27ec4407790d075c325e1f4da0a19c56953cce23\n| Author: Ingo Molnar \u003cmingo@elte.hu\u003e\n| Date: Thu Feb 28 21:00:21 2008 +0100\n|\n| sched: make cpu_clock() globally synchronous\n|\n| Alexey Zaytsev reported (and bisected) that the introduction of\n| cpu_clock() in printk made the timestamps jump back and forth.\n|\n| Make cpu_clock() more reliable while still keeping it fast when it\u0027s\n| called frequently.\n|\n| Signed-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n\ncauses watchdog triggers when a cpu exits NOHZ state when it has been\nthere for \u003e\u003d the soft lockup threshold, for example here are some\nmessages from a 128 cpu Niagara2 box:\n\n[ 168.106406] BUG: soft lockup - CPU#11 stuck for 128s! [dd:3239]\n[ 168.989592] BUG: soft lockup - CPU#21 stuck for 86s! [swapper:0]\n[ 168.999587] BUG: soft lockup - CPU#29 stuck for 91s! [make:4511]\n[ 168.999615] BUG: soft lockup - CPU#2 stuck for 85s! [swapper:0]\n[ 169.020514] BUG: soft lockup - CPU#37 stuck for 91s! [swapper:0]\n[ 169.020514] BUG: soft lockup - CPU#45 stuck for 91s! [sh:4515]\n[ 169.020515] BUG: soft lockup - CPU#69 stuck for 92s! [swapper:0]\n[ 169.020515] BUG: soft lockup - CPU#77 stuck for 92s! [swapper:0]\n[ 169.020515] BUG: soft lockup - CPU#61 stuck for 92s! [swapper:0]\n[ 169.112554] BUG: soft lockup - CPU#85 stuck for 92s! [swapper:0]\n[ 169.112554] BUG: soft lockup - CPU#101 stuck for 92s! [swapper:0]\n[ 169.112554] BUG: soft lockup - CPU#109 stuck for 92s! [swapper:0]\n[ 169.112554] BUG: soft lockup - CPU#117 stuck for 92s! [swapper:0]\n[ 169.171483] BUG: soft lockup - CPU#40 stuck for 80s! [dd:3239]\n[ 169.331483] BUG: soft lockup - CPU#13 stuck for 86s! [swapper:0]\n[ 169.351500] BUG: soft lockup - CPU#43 stuck for 101s! [dd:3239]\n[ 169.531482] BUG: soft lockup - CPU#9 stuck for 129s! [mkdir:4565]\n[ 169.595754] BUG: soft lockup - CPU#20 stuck for 93s! [swapper:0]\n[ 169.626787] BUG: soft lockup - CPU#52 stuck for 93s! [swapper:0]\n[ 169.626787] BUG: soft lockup - CPU#84 stuck for 92s! [swapper:0]\n[ 169.636812] BUG: soft lockup - CPU#116 stuck for 94s! [swapper:0]\n\nIt\u0027s simple enough to trigger this by doing a 10 minute sleep after a\nfresh bootup then starting a parallel kernel build.\n\nI suspect this might be reintroducing a problem we\u0027ve had and fixed\nbefore, see the thread:\n\nhttp://marc.info/?l\u003dlinux-kernel\u0026m\u003d119546414004065\u0026w\u003d2\n\u003c---------------|\n\ntouch the softlockup watchdog when exiting NOHZ state - we are\nobviously not locked up.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "5dfeaef89559d4968b0470adf749659f10d722f6", "tree": "e38f4177b8e2e12cd1aa2e9910beea1dc3578784", "parents": [ "429f731dea577bdd43693940cdca524135287e6a", "259aae864ceeb2b34e7bafa1ce18d096a357fab2" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 21 15:43:43 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 21 15:43:43 2008 -0700" }, "message": "Merge branch \u0027master\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-hrt\n\n* \u0027master\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-hrt:\n hrtimer: optimize the softirq time optimization\n hrtimer: reduce calls to hrtimer_get_softirq_time()\n clockevents: fix typo in tick-broadcast.c\n jiffies: add time_is_after_jiffies and others which compare with jiffies\n" }, { "commit": "ec965350bb98bd291eb34f6ecddfdcfc36da1e6e", "tree": "983bcaf33ed00b48a86f7f8790cc460cf15dd252", "parents": [ "5f033bb9bc5cb3bb37a79e3ef131f50ecdcb72b0", "486fdae21458bd9f4e125099bb3c38a4064e450e" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 21 15:40:24 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 21 15:40:24 2008 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched-devel\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched-devel: (62 commits)\n sched: build fix\n sched: better rt-group documentation\n sched: features fix\n sched: /debug/sched_features\n sched: add SCHED_FEAT_DEADLINE\n sched: debug: show a weight tree\n sched: fair: weight calculations\n sched: fair-group: de-couple load-balancing from the rb-trees\n sched: fair-group scheduling vs latency\n sched: rt-group: optimize dequeue_rt_stack\n sched: debug: add some debug code to handle the full hierarchy\n sched: fair-group: SMP-nice for group scheduling\n sched, cpuset: customize sched domains, core\n sched, cpuset: customize sched domains, docs\n sched: prepatory code movement\n sched: rt: multi level group constraints\n sched: task_group hierarchy\n sched: fix the task_group hierarchy for UID grouping\n sched: allow the group scheduler to have multiple levels\n sched: mix tasks and groups\n ...\n" }, { "commit": "833df317f9ada91488898b005f4641bb674a3bae", "tree": "4d71c55616b3bd5648511a3c485324984c8c2472", "parents": [ "3f34d024c12e49fbce4009d094ae1d287084e511" ], "author": { "name": "Glauber Costa", "email": "gcosta@redhat.com", "time": "Fri Apr 18 13:38:58 2008 -0700" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Apr 21 07:59:51 2008 +0200" }, "message": "clockevents: fix typo in tick-broadcast.c\n\nbraodcast -\u003e broadcast\n\nSigned-off-by: Glauber Costa \u003cgcosta@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "d0b27fa77854b149ad4af08b0fe47fe712a47ade", "tree": "2f4487c108a5132e8d52456567b4a67e78fbb4a6", "parents": [ "57d3da2911787a101a384532f4519f9640bae883" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Sat Apr 19 19:44:57 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Apr 19 19:44:57 2008 +0200" }, "message": "sched: rt-group: synchonised bandwidth period\n\nVarious SMP balancing algorithms require that the bandwidth period\nrun in sync.\n\nPossible improvements are moving the rt_bandwidth thing into root_domain\nand keeping a span per rt_bandwidth which marks throttled cpus.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "d8bb6f4c1670c8324e4135c61ef07486f7f17379", "tree": "d53b676621b3bd6bb4d39a4b22588b58e1a7ea45", "parents": [ "f1326973262382150c26bf4dfccd0fce310c4a9c" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Tue Apr 01 19:45:18 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Apr 19 19:19:55 2008 +0200" }, "message": "x86: tsc prevent time going backwards\n\nWe already catch most of the TSC problems by sanity checks, but there\nis a subtle bug which has been in the code forever. This can cause\ntime jumps in the range of hours.\n\nThis was reported in:\n http://lkml.org/lkml/2007/8/23/96\nand\n http://lkml.org/lkml/2008/3/31/23\n\nI was able to reproduce the problem with a gettimeofday loop test on a\ndual core and a quad core machine which both have sychronized\nTSCs. The TSCs seems not to be perfectly in sync though, but the\nkernel is not able to detect the slight delta in the sync check. Still\nthere exists an extremly small window where this delta can be observed\nwith a real big time jump. So far I was only able to reproduce this\nwith the vsyscall gettimeofday implementation, but in theory this\nmight be observable with the syscall based version as well.\n\nCPU 0 updates the clock source variables under xtime/vyscall lock and\nCPU1, where the TSC is slighty behind CPU0, is reading the time right\nafter the seqlock was unlocked.\n\nThe clocksource reference data was updated with the TSC from CPU0 and\nthe value which is read from TSC on CPU1 is less than the reference\ndata. This results in a huge delta value due to the unsigned\nsubtraction of the TSC value and the reference value. This algorithm\ncan not be changed due to the support of wrapping clock sources like\npm timer.\n\nThe huge delta is converted to nanoseconds and added to xtime, which\nis then observable by the caller. The next gettimeofday call on CPU1\nwill show the correct time again as now the TSC has advanced above the\nreference value.\n\nTo prevent this TSC specific wreckage we need to compare the TSC value\nagainst the reference value and return the latter when it is larger\nthan the actual TSC value.\n\nI pondered to mark the TSC unstable when the readout is smaller than\nthe reference value, but this would render an otherwise good and fast\nclocksource unusable without a real good reason.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "73e3e6481f56b3b5b618671a8d32b19a35f84316", "tree": "44addba339ca1279a82d6d702e92e6cc2c183810", "parents": [ "4adeaaf51ebcc3f629f5512b96aebb5089388bca", "6993fc5bbc5d63ccd55985b39c34417e430e75e9" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Apr 18 08:37:41 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Apr 18 08:37:41 2008 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-hrt\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-hrt:\n clocksource: make clocksource watchdog cycle through online CPUs\n Documentation: move timer related documentation to a single place\n clockevents: optimise tick_nohz_stop_sched_tick() a bit\n locking: remove unused double_spin_lock()\n hrtimers: simplify lockdep handling\n timers: simplify lockdep handling\n posix-timers: fix shadowed variables\n timer_list: add annotations to workqueue.c\n hrtimer: use nanosleep specific restart_block fields\n hrtimer: add nanosleep specific restart_block member\n" }, { "commit": "9732b6112343df2872518ec6701c8ef729310a05", "tree": "9e3dcc461845038da4730c2062eee546348ca445", "parents": [ "9e9abecfc0ff3a9ad2ead954b37bbfcb863c775e", "1a9a3e76dde191f82f7a8a66059dcbb4a9f63ff3" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Apr 18 08:37:01 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Apr 18 08:37:01 2008 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-kgdb\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-kgdb:\n kgdb: always use icache flush for sw breakpoints\n kgdb: fix SMP NMI kgdb_handle_exception exit race\n kgdb: documentation fixes\n kgdb: allow static kgdbts boot configuration\n kgdb: add documentation\n kgdb: Kconfig fix\n kgdb: add kgdb internal test suite\n kgdb: fix several kgdb regressions\n kgdb: kgdboc pl011 I/O module\n kgdb: fix optional arch functions and probe_kernel_*\n kgdb: add x86 HW breakpoints\n kgdb: print breakpoint removed on exception\n kgdb: clocksource watchdog\n kgdb: fix NMI hangs\n kgdb: fix kgdboc dynamic module configuration\n kgdb: document parameters\n x86: kgdb support\n consoles: polling support, kgdboc\n kgdb: core\n uaccess: add probe_kernel_write()\n" }, { "commit": "7c3078b637882303b1dcf6a16229d0e35f6b60a5", "tree": "4b1456f81627056eff8750e42481c0b00ac84cf0", "parents": [ "d359752407f8916c29ad53a5c30ac73e338f2797" ], "author": { "name": "Jason Wessel", "email": "jason.wessel@windriver.com", "time": "Fri Feb 15 14:55:54 2008 -0600" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Apr 17 20:05:38 2008 +0200" }, "message": "kgdb: clocksource watchdog\n\nIn order to not trip the clocksource watchdog, kgdb must touch the\nclocksource watchdog on the return to normal system run state.\n\nSigned-off-by: Jason Wessel \u003cjason.wessel@windriver.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "6993fc5bbc5d63ccd55985b39c34417e430e75e9", "tree": "6a1ea13d3f27a8063a9375689b729479c4e63e22", "parents": [ "3833eecc183ce052e9ac96b39b45121a2d11ac16" ], "author": { "name": "Andi Kleen", "email": "ak@suse.de", "time": "Wed Jan 30 13:30:02 2008 +0100" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Thu Apr 17 12:22:31 2008 +0200" }, "message": "clocksource: make clocksource watchdog cycle through online CPUs\n\nThis way it checks if the clocks are synchronized between CPUs too.\nThis might be able to detect slowly drifting TSCs which only\ngo wrong over longer time.\n\nSigned-off-by: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "903b8a8d4835a796f582033802c83283886f4a3d", "tree": "11837b4da0000633f90000bb47aaa4fa82a029be", "parents": [ "3f3eafc921e2378954c28cfd0eb10910449f4c11" ], "author": { "name": "Karsten Wiese", "email": "fzu@wemgehoertderstaat.de", "time": "Thu Feb 28 15:10:50 2008 +0100" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Thu Apr 17 12:22:31 2008 +0200" }, "message": "clockevents: optimise tick_nohz_stop_sched_tick() a bit\n\nCall\n\tts \u003d \u0026per_cpu(tick_cpu_sched, cpu);\nand\n\tcpu \u003d smp_processor_id();\nonce instead of twice.\n\nNo functional change done, as changed code runs with local irq off.\nReduces source lines and text size (20bytes on x86_64).\n\n[ akpm@linux-foundation.org: Build fix ]\n\nSigned-off-by: Karsten Wiese \u003cfzu@wemgehoertderstaat.de\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "d7b906897e9caae452947e33674df0a2d6f7e10f", "tree": "5df31094a1b24a46369bda89cdf54d5403b1caa9", "parents": [ "43ca5c3a1cefdaa09231d64485b8f676118bf1e0" ], "author": { "name": "Russell King", "email": "rmk+lkml@arm.linux.org.uk", "time": "Thu Apr 17 07:46:24 2008 +0200" }, "committer": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Thu Apr 17 07:47:05 2008 +0200" }, "message": "[S390] genirq/clockevents: move irq affinity prototypes/inlines to interrupt.h\n\n\u003e Generic code is not supposed to include irq.h. Replace this include\n\u003e by linux/hardirq.h instead and add/replace an include of linux/irq.h\n\u003e in asm header files where necessary.\n\u003e This change should only matter for architectures that make use of\n\u003e GENERIC_CLOCKEVENTS.\n\u003e Architectures in question are mips, x86, arm, sh, powerpc, uml and sparc64.\n\u003e\n\u003e I did some cross compile tests for mips, x86_64, arm, powerpc and sparc64.\n\u003e This patch fixes also build breakages caused by the include replacement in\n\u003e tick-common.h.\n\nI generally dislike adding optional linux/* includes in asm/* includes -\nI\u0027m nervous about this causing include loops.\n\nHowever, there\u0027s a separate point to be discussed here.\n\nThat is, what interfaces are expected of every architecture in the kernel.\nIf generic code wants to be able to set the affinity of interrupts, then\nthat needs to become part of the interfaces listed in linux/interrupt.h\nrather than linux/irq.h.\n\nSo what I suggest is this approach instead (against Linus\u0027 tree of a\ncouple of days ago) - we move irq_set_affinity() and irq_can_set_affinity()\nto linux/interrupt.h, change the linux/irq.h includes to linux/interrupt.h\nand include asm/irq_regs.h where needed (asm/irq_regs.h is supposed to be\nrarely used include since not much touches the stacked parent context\nregisters.)\n\nBuild tested on ARM PXA family kernels and ARM\u0027s Realview platform\nkernels which both use genirq.\n\n[ tglx@linutronix.de: add GENERIC_HARDIRQ dependencies ]\n\nSigned-off-by: Russell King \u003crmk+kernel@arm.linux.org.uk\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\n" }, { "commit": "898a19de1502649877091b398229026b4142c0e2", "tree": "14bb8190db30d356cb1da9e7467898e12bf26a29", "parents": [ "a4083c9271e0a697278e089f2c0b9a95363ada0a" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Tue Mar 25 09:01:51 2008 +0100" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Tue Mar 25 20:13:25 2008 +0100" }, "message": "clocksource: revert: use init_timer_deferrable for clocksource_watchdog\n\nRevert\n\ncommit 1077f5a917b7c630231037826b344b2f7f5b903f\nAuthor: Parag Warudkar \u003cparag.warudkar@gmail.com\u003e\nDate: Wed Jan 30 13:30:01 2008 +0100\n\n clocksource.c: use init_timer_deferrable for clocksource_watchdog\n \n clocksource_watchdog can use a deferrable timer - reduces wakeups from\n idle per second.\n\nThe watchdog timer needs to run with the specified interval. Otherwise\nit will miss the possible wrap of the watchdog clocksource.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: stable@kernel.org\n\n" }, { "commit": "92896bd9fd75b1c993b92874d339a8088bb75560", "tree": "2bd8bc5a8c8ee10a4b1fd62804281d2b486067f0", "parents": [ "d2532dd20a126020de407c1c2476a75b53fce7ac" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Mar 24 11:07:15 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Mar 24 11:07:15 2008 -0700" }, "message": "Don\u0027t \u0027printk()\u0027 while holding xtime lock for writing\n\nThe printk() can deadlock because it can wake up klogd(), and\ntask enqueueing will try to read the time in order to set a hrtimer.\n\nReported-by: Marcin Slusarz \u003cmarcin.slusarz@gmail.com\u003e\nDebugged-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3150e63df41450a795bbd0bd98a8e70da74e0285", "tree": "cee77b25ba25abc5c892cfb06fdac92bbd946991", "parents": [ "cf821e8f53e3d147ebae03c8c710d2b8842d88a1" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Wed Mar 19 17:01:08 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Mar 19 18:53:37 2008 -0700" }, "message": "revert \"clocksource: make clocksource watchdog cycle through online CPUs\"\n\nRevert commit 1ada5cba6a0318f90e45b38557e7b5206a9cba38 (\"clocksource:\nmake clocksource watchdog cycle through online CPUs\") due to the\nregression reported by Gabriel C at\n\n\thttp://lkml.org/lkml/2008/2/24/281\n\n(short vesion: it makes TSC be marked as always unstable on his\nmachine).\n\nCc: Andi Kleen \u003cak@suse.de\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Robert Hancock \u003chancockr@shaw.ca\u003e\nAcked-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nCc: \"Rafael J. Wysocki\" \u003crjw@sisk.pl\u003e\nCc: Gabriel C \u003cnix.or.die@googlemail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "10a398d04c4a1fc395840f4d040493375f562302", "tree": "02096fe81b70e2baf8db35ebc9d303a1b13029c3", "parents": [ "a79017660ea4597ec489fab3b5aaf71dd776dfc7" ], "author": { "name": "Roman Zippel", "email": "zippel@linux-m68k.org", "time": "Tue Mar 04 15:14:26 2008 -0800" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Sun Mar 09 08:42:57 2008 +0100" }, "message": "time: remove obsolete CLOCK_TICK_ADJUST\n\nThe first version of the ntp_interval/tick_length inconsistent usage patch was\nrecently merged as bbe4d18ac2e058c56adb0cd71f49d9ed3216a405\n\nhttp://git.kernel.org/gitweb.cgi?p\u003dlinux/kernel/git/torvalds/linux-2.6.git;a\u003dcommit;h\u003dbbe4d18ac2e058c56adb0cd71f49d9ed3216a405\n\nWhile the fix did greatly improve the situation, it was correctly pointed out\nby Roman that it does have a small bug: If the users change clocksources after\nthe system has been running and NTP has made corrections, the correctoins made\nagainst the old clocksource will be applied against the new clocksource,\ncausing error.\n\nThe second attempt, which corrects the issue in the NTP_INTERVAL_LENGTH\ndefinition has also made it up-stream as commit\ne13a2e61dd5152f5499d2003470acf9c838eab84\n\nhttp://git.kernel.org/gitweb.cgi?p\u003dlinux/kernel/git/torvalds/linux-2.6.git;a\u003dcommit;h\u003de13a2e61dd5152f5499d2003470acf9c838eab84\n\nRoman has correctly pointed out that CLOCK_TICK_ADJUST is calculated\nbased on the PIT\u0027s frequency, and isn\u0027t really relevant to non-PIT\ndriven clocksources (that is, clocksources other then jiffies and pit).\n\nThis patch reverts both of those changes, and simply removes\nCLOCK_TICK_ADJUST.\n\nThis does remove the granularity error correction for users of PIT and Jiffies\nclocksource users, but the granularity error but for the majority of users, it\nshould be within the 500ppm range NTP can accommodate for.\n\nFor systems that have granularity errors greater then 500ppm, the\n\"ntp_tick_adj\u003d\" boot option can be used to compensate.\n\n[johnstul@us.ibm.com: provided changelog]\n[mattilinnanvuori@yahoo.com: maek ntp_tick_adj static]\nSigned-off-by: Roman Zippel \u003czippel@linux-m68k.org\u003e\nAcked-by: john stultz \u003cjohnstul@us.ibm.com\u003e\nSigned-off-by: Matti Linnanvuori \u003cmattilinnanvuori@yahoo.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: mingo@elte.hu\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "a79017660ea4597ec489fab3b5aaf71dd776dfc7", "tree": "87fedadc8d003391c9ccf5d3cf0aba69fb8e443d", "parents": [ "38332cb98772f5ea757e6486bed7ed0381cb5f98" ], "author": { "name": "Karsten Wiese", "email": "fzu@wemgehoertderstaat.de", "time": "Tue Mar 04 14:59:55 2008 -0800" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Sun Mar 09 08:42:57 2008 +0100" }, "message": "time: don\u0027t touch an offlined CPU\u0027s ts-\u003etick_stopped in tick_cancel_sched_timer()\n\nSilences WARN_ONs in rcu_enter_nohz() and rcu_exit_nohz(), which appeared\nbefore caused by (repeated) calls to:\n $ echo 0 \u003e /sys/devices/system/cpu/cpu1/online\n $ echo 1 \u003e /sys/devices/system/cpu/cpu1/online\n\nSigned-off-by: Karsten Wiese \u003cfzu@wemgehoertderstaat.de\u003e\nCc: johnstul@us.ibm.com\nCc: Rafael Wysocki \u003crjw@sisk.pl\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nAcked-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "e48af19f56eb47a1f908ee8f16df9d246f955b21", "tree": "39a6769d80f125f6cfd4721a900e4b897ea15fbb", "parents": [ "84c6f6046c5a2189160a8f0dca8b90427bf690ea" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Mon Feb 25 18:31:57 2008 +0100" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Sun Mar 09 08:42:57 2008 +0100" }, "message": "ntp: use unsigned input for do_div()\n\nThe kernel NTP code shouldn\u0027t hand 64-bit *signed* values to do_div(). Make it\ninstead hand 64-bit unsigned values. This gets rid of a couple of warnings.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nCc: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\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": "2232c2d8e0a6a31061dec311f3d1cf7624bc14f1", "tree": "1d90ec0b8bd4e3c154e386f005ef596ee25fa53f", "parents": [ "c0f4133b8f70769bc8dda977feb9a29109d6ccca" ], "author": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Feb 29 18:46:50 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Feb 29 18:46:50 2008 +0100" }, "message": "rcu: add support for dynamic ticks and preempt rcu\n\nThe PREEMPT-RCU can get stuck if a CPU goes idle and NO_HZ is set. The\nidle CPU will not progress the RCU through its grace period and a\nsynchronize_rcu my get stuck. Without this patch I have a box that will\nnot boot when PREEMPT_RCU and NO_HZ are set. That same box boots fine\nwith this patch.\n\nThis patch comes from the -rt kernel where it has been tested for\nseveral months.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "db4315d6f53edc2cc0b0b06fce1beffebb119c71", "tree": "4c0c4a3f86e9f319e6aeda3210e33a51b38a7fba", "parents": [ "1309d4e68497184d2fd87e892ddf14076c2bda98" ], "author": { "name": "Pavel Machek", "email": "pavel@ucw.cz", "time": "Tue Feb 05 00:48:13 2008 +0100" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Sun Feb 17 17:29:38 2008 +0100" }, "message": "timer_list: print relative expiry time signed\n\nRelative expiry time can get negative, so it should be signed.\n\nSigned-off-by: Pavel Machek \u003cPavel@suse.cz\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n\n" }, { "commit": "e13a2e61dd5152f5499d2003470acf9c838eab84", "tree": "4846b2ea392773f7a92d31334295d7aadbafd83e", "parents": [ "25f666300625d894ebe04bac2b4b3aadb907c861" ], "author": { "name": "john stultz", "email": "johnstul@us.ibm.com", "time": "Sun Feb 10 10:48:03 2008 +0100" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Sun Feb 10 10:48:03 2008 +0100" }, "message": "ntp: correct inconsistent interval/tick_length usage\n\nclocksource initialization and error accumulation. This corrects a 280ppm\ndrift seen on some systems using acpi_pm, and affects other clocksources as\nwell (likely to a lesser degree).\n\nSigned-off-by: John Stultz \u003cjohnstul@us.ibm.com\u003e\nCc: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "3eb056764dd806bbe84eb604e45e7470feeaafd8", "tree": "97a8fe2123d2c9df2bcb48052ac33d445a00f64c", "parents": [ "cf4fc6cb76e50b01666e28a9f4b2e6fbcbb96d5f" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Fri Feb 08 04:19:25 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 08 09:22:29 2008 -0800" }, "message": "time: fix typo in comments\n\nFix typo in comments.\n\nBTW: I have to fix coding style in arch/ia64/kernel/time.c also, otherwise\ncheckpatch.pl will be complaining.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: john stultz \u003cjohnstul@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "cf4fc6cb76e50b01666e28a9f4b2e6fbcbb96d5f", "tree": "ac1e027b7e759822014bd3a72ababd1fa1052198", "parents": [ "0b858e6ff9a38b987a83d22e6f2a2f621c80608d" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Fri Feb 08 04:19:24 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 08 09:22:29 2008 -0800" }, "message": "timekeeping: rename timekeeping_is_continuous to timekeeping_valid_for_hres\n\nFunction timekeeping_is_continuous() no longer checks flag\nCLOCK_IS_CONTINUOUS, and it checks CLOCK_SOURCE_VALID_FOR_HRES now. So rename\nthe function accordingly.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: john stultz \u003cjohnstul@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0b858e6ff9a38b987a83d22e6f2a2f621c80608d", "tree": "71bea1f83730b25ef1a18d56e9b5e69261b884c4", "parents": [ "818c357802e2791880057fe752dc9ce9e210f772" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Fri Feb 08 04:19:24 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 08 09:22:29 2008 -0800" }, "message": "clockevent: simplify list operations\n\nlist_for_each_safe() suffices here.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: john stultz \u003cjohnstul@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "818c357802e2791880057fe752dc9ce9e210f772", "tree": "3694d26a887fea0cb96e843177d3281bc1cc7ef6", "parents": [ "146a505d498c36de98ec161d791dd50beca7f9a3" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Fri Feb 08 04:19:23 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 08 09:22:29 2008 -0800" }, "message": "clocksource: remove redundant code\n\nFlag CLOCK_SOURCE_WATCHDOG is cleared twice. Note clocksource_change_rating()\nwon\u0027t do anyting with the cs flag.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: john stultz \u003cjohnstul@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5e2cb1018a8a583b83d56c80f46507da6f3f2b57", "tree": "b9cbe718649c8be6e2d54aedcf75244fbe56bddd", "parents": [ "be6c28e62e3a304b74013afab029af2021e1f50d" ], "author": { "name": "Miao Xie", "email": "miaox@cn.fujitsu.com", "time": "Wed Feb 06 01:36:53 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Feb 06 10:41:03 2008 -0800" }, "message": "time: fix sysfs_show_{available,current}_clocksources() buffer overflow problem\n\nI found that there is a buffer overflow problem in the following code.\n\nVersion:\t2.6.24-rc2,\nFile:\t\tkernel/time/clocksource.c:417-432\n--------------------------------------------------------------------\nstatic ssize_t\nsysfs_show_available_clocksources(struct sys_device *dev, char *buf)\n{\n\tstruct clocksource *src;\n\tchar *curr \u003d buf;\n\n\tspin_lock_irq(\u0026clocksource_lock);\n\tlist_for_each_entry(src, \u0026clocksource_list, list) {\n\t\tcurr +\u003d sprintf(curr, \"%s \", src-\u003ename);\n\t}\n\tspin_unlock_irq(\u0026clocksource_lock);\n\n\tcurr +\u003d sprintf(curr, \"\\n\");\n\n\treturn curr - buf;\n}\n-----------------------------------------------------------------------\n\nsysfs_show_current_clocksources() also has the same problem though in practice\nthe size of current clocksource\u0027s name won\u0027t exceed PAGE_SIZE.\n\nI fix the bug by using snprintf according to the specification of the kernel\n(Version:2.6.24-rc2,File:Documentation/filesystems/sysfs.txt)\n\nFix sysfs_show_available_clocksources() and sysfs_show_current_clocksources()\nbuffer overflow problem with snprintf().\n\nSigned-off-by: Miao Xie \u003cmiaox@cn.fujitsu.com\u003e\nCc: WANG Cong \u003cxiyou.wangcong@gmail.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: john stultz \u003cjohnstul@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5df7fa1c62146a0933767d040d400013310dbcc7", "tree": "bfd108f0d33a91d4f2476df7f5a7f562b640eb97", "parents": [ "1001d0a9ee74a468077dfd4da0565174e88de26b" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri Feb 01 17:45:14 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Feb 01 17:45:14 2008 +0100" }, "message": "tick-sched: add more debug information\n\nTo allow better diagnosis of tick-sched related, especially NOHZ\nrelated problems, we need to know when the last wakeup via an irq\nhappened and when the CPU left the idle state.\n\nAdd two fields (idle_waketime, idle_exittime) to the tick_sched\nstructure and add them to the timer_list output.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "1001d0a9ee74a468077dfd4da0565174e88de26b", "tree": "8775592b23e8049700ff98a7bdbcf9c802a0f127", "parents": [ "3588a085cd52ef080bf72df772378e1ba6bb292f" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri Feb 01 17:45:13 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Feb 01 17:45:13 2008 +0100" }, "message": "timekeeping: update xtime_cache when time(zone) changes\n\nxtime_cache needs to be updated whenever xtime and or wall_to_monotic\nare changed. Otherwise users of xtime_cache might see a stale (and in\nthe case of timezone changes utterly wrong) value until the next\nupdate happens.\n\nFixup the obvious places, which miss this update.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nAcked-by: John Stultz \u003cjohnstul@us.ibm.com\u003e\nTested-by: Dhaval Giani \u003cdhaval@linux.vnet.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "6378ddb592158db4b42197f1bc8666228800e379", "tree": "f9b1e671dfd12fb221f6140dd231ccb14cd9f27e", "parents": [ "bbe4d18ac2e058c56adb0cd71f49d9ed3216a405" ], "author": { "name": "Venki Pallipadi", "email": "venkatesh.pallipadi@intel.com", "time": "Wed Jan 30 13:30:04 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 30 13:30:04 2008 +0100" }, "message": "time: track accurate idle time with tick_sched.idle_sleeptime\n\nCurrent idle time in kstat is based on jiffies and is coarse grained.\ntick_sched.idle_sleeptime is making some attempt to keep track of idle time\nin a fine grained manner. But, it is not handling the time spent in\ninterrupts fully.\n\nMake tick_sched.idle_sleeptime accurate with respect to time spent on\nhandling interrupts and also add tick_sched.idle_lastupdate, which keeps\ntrack of last time when idle_sleeptime was updated.\n\nThis statistics will be crucial for cpufreq-ondemand governor, which can\nshed some conservative gaurd band that is uses today while setting the\nfrequency. The ondemand changes that uses the exact idle time is coming\nsoon.\n\nSigned-off-by: Venkatesh Pallipadi \u003cvenkatesh.pallipadi@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "bbe4d18ac2e058c56adb0cd71f49d9ed3216a405", "tree": "bc81b3a04cc01fed11ac47673475bf4019cc013f", "parents": [ "37a47db8d7f0f38dac5acf5a13abbc8f401707fa" ], "author": { "name": "john stultz", "email": "johnstul@us.ibm.com", "time": "Wed Jan 30 13:30:03 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 30 13:30:03 2008 +0100" }, "message": "NTP: correct inconsistent ntp interval/tick_length usage\n\nI recently noticed on one of my boxes that when synched with an NTP\nserver, the drift value reported for the system was ~283ppm. While in\nsome cases, clock hardware can be that bad, it struck me as unusual as\nthe system was using the acpi_pm clocksource, which is one of the more\ntrustworthy and accurate clocksources on x86 hardware.\n\nI brought up another system and let it sync to the same NTP server, and\nI noticed a similar 280some ppm drift.\n\nIn looking at the code, I found that the acpi_pm\u0027s constant frequency\nwas being computed correctly at boot-up, however once the system was up,\neven without the ntp daemon running, the clocksource\u0027s frequency was\nbeing modified by the clocksource_adjust() function.\n\nDigging deeper, I realized that in the code that keeps track of how much\nthe clocksource is skewing from the ntp desired time, we were using\ndifferent lengths to establish how long an time interval was.\n\nThe clocksource was being setup with the following interval:\n\tNTP_INTERVAL_LENGTH \u003d NSEC_PER_SEC/NTP_INTERVAL_FREQ\n\nWhile the ntp code was using the tick_length_base value:\n\ttick_length_base ~\u003d (tick_usec * NSEC_PER_USEC * USER_HZ)\n\t\t\t\t\t/NTP_INTERVAL_FREQ\n\nThe subtle difference is:\n\t(tick_usec * NSEC_PER_USEC * USER_HZ) !\u003d NSEC_PER_SEC\n\nThis difference in calculation was causing the clocksource correction\ncode to apply a correction factor to the clocksource so the two\nintervals were the same, however this results in the actual frequency of\nthe clocksource to be made incorrect. I believe this difference would\naffect all clocksources, although to differing degrees depending on the\nclocksource resolution.\n\nThe issue was introduced when my HZ free ntp patch landed in 2.6.21-rc1,\nso my apologies for the mistake, and for not noticing it until now.\n\nThe following patch, corrects the clocksource\u0027s initialization code so\nit uses the same interval length as the code in ntp.c. After applying\nthis patch, the drift value for the same system went from ~283ppm to\nonly 2.635ppm.\n\nI believe this patch to be good, however it does affect all arches and\nI\u0027ve only tested on x86, so some caution is advised. I do think it would\nbe a likely candidate for a stable 2.6.24.x release.\n\nAny thoughts or feedback would be appreciated.\n\nSigned-off-by: John Stultz \u003cjohnstul@us.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "45fe4fe19120a22f7339f5bb110447170c25fca9", "tree": "06639135ca5bc60e952670dd7df40e195edb2ad9", "parents": [ "1a0c009ac53de4a7664a1239936f0bc258133156" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 30 13:30:03 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 30 13:30:03 2008 +0100" }, "message": "x86: make clockevents more robust\n\ndetect zero event-device multiplicators - they then cause\ndivision-by-zero crashes if a clockevent has been initialized\nincorrectly.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "4713e22ce81eb8b3353e16435362eb3d0ec95640", "tree": "6f96151bd9b182d6b9d706d3ad3b4fe8c99e7f7e", "parents": [ "316da3b3fc8efa9a5d2c99e0d449f01ff38c6aba" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Jan 30 13:30:02 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 30 13:30:02 2008 +0100" }, "message": "clocksource: add unregister function to disable unusable clocksources\n\nOn x86 the PIT might become an unusable clocksource. Add an unregister\nfunction to provide a possibilty to remove the PIT from the list of\navailable clock sources.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "1ada5cba6a0318f90e45b38557e7b5206a9cba38", "tree": "262886af88fe55e2de6fb1e878f68bd6b452a3aa", "parents": [ "1077f5a917b7c630231037826b344b2f7f5b903f" ], "author": { "name": "Andi Kleen", "email": "ak@suse.de", "time": "Wed Jan 30 13:30:02 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 30 13:30:02 2008 +0100" }, "message": "clocksource: make clocksource watchdog cycle through online CPUs\n\nThis way it checks if the clocks are synchronized between CPUs too.\nThis might be able to detect slowly drifting TSCs which only\ngo wrong over longer time.\n\nSigned-off-by: Andi Kleen \u003cak@suse.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "1077f5a917b7c630231037826b344b2f7f5b903f", "tree": "e0083b73450d513b16d0f5c0704ad49961dce401", "parents": [ "efd9ac8630e89b9ee7ce64008bd7783952374f37" ], "author": { "name": "Parag Warudkar", "email": "parag.warudkar@gmail.com", "time": "Wed Jan 30 13:30:01 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 30 13:30:01 2008 +0100" }, "message": "clocksource.c: use init_timer_deferrable for clocksource_watchdog\n\nclocksource_watchdog can use a deferrable timer - reduces wakeups from\nidle per second.\n\nSigned-off-by: Parag Warudkar \u003cparag.warudkar@gmail.com\u003e\nCc: john stultz \u003cjohnstul@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "efd9ac8630e89b9ee7ce64008bd7783952374f37", "tree": "2b06184b9241770aff309a9940f6e400371003a4", "parents": [ "1d76c2622813fbc692b0d323028cfef9ee36051a" ], "author": { "name": "Geert Uytterhoeven", "email": "Geert.Uytterhoeven@sonycom.com", "time": "Wed Jan 30 13:30:01 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 30 13:30:01 2008 +0100" }, "message": "time: fold __get_realtime_clock_ts() into getnstimeofday()\n\n - getnstimeofday() was just a wrapper around __get_realtime_clock_ts()\n - Replace calls to __get_realtime_clock_ts() by calls to getnstimeofday()\n - Fix bogus reference to get_realtime_clock_ts(), which never existed\n\nSigned-off-by: Geert Uytterhoeven \u003cGeert.Uytterhoeven@sonycom.com\u003e\nCc: john stultz \u003cjohnstul@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "186e3cb8a465bac010ee3b020768d2fa2b505aef", "tree": "c45dd774f91cf9095915c7e4bbec9084fcd06026", "parents": [ "b10db7f0d2b589a7f88dc3026e150756cb437a28" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Jan 30 13:30:01 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 30 13:30:01 2008 +0100" }, "message": "timer: clean up tick-broadcast.c\n\nclean up tick-broadcast.c\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "b10db7f0d2b589a7f88dc3026e150756cb437a28", "tree": "92942041770257c78f7271b79d9860eec10bd77c", "parents": [ "4c9dc6412247abf4972080c51cd16a58c4009c19" ], "author": { "name": "Pavel Machek", "email": "pavel@ucw.cz", "time": "Wed Jan 30 13:30:00 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 30 13:30:00 2008 +0100" }, "message": "time: more timer related cleanups\n\nI was confused by FSEC \u003d 10^15 NSEC statement, plus small whitespace\nfixes. When there\u0027s copyright, there should be GPL.\n\nSigned-off-by: Pavel Machek \u003cpavel@suse.cz\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "4c9dc6412247abf4972080c51cd16a58c4009c19", "tree": "a6c9b22da4ff5537219c03fbbfc919b95a27df2a", "parents": [ "a6fa8e5a6172a5a5bc06ed04f34e50b36c978127" ], "author": { "name": "Pavel Machek", "email": "pavel@ucw.cz", "time": "Wed Jan 30 13:30:00 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 30 13:30:00 2008 +0100" }, "message": "time: timer cleanups\n\nSmall cleanups to tick-related code. Wrong preempt count is followed\nby BUG(), so it is hardly KERN_WARNING.\n\nSigned-off-by: Pavel Machek \u003cpavel@suse.cz\u003e\nCc: john stultz \u003cjohnstul@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "2d44ae4d7135b9aee26439b3523b43473381bc5f", "tree": "ba3afc0f03142d26f9238974dab5b99bf1dca1db", "parents": [ "48d5e258216f1c7713633439beb98a38c7290649" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Fri Jan 25 21:08:31 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jan 25 21:08:31 2008 +0100" }, "message": "hrtimer: clean up cpu-\u003ebase locking tricks\n\nIn order to more easily allow for the scheduler to use timers, clean up\nthe locking a bit.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "48d5e258216f1c7713633439beb98a38c7290649", "tree": "6f8c98785015d56337e87ed56b23d39feeeaf846", "parents": [ "614ee1f61f667b02165c1ae0c1357048dc6d94a0" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Fri Jan 25 21:08:31 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jan 25 21:08:31 2008 +0100" }, "message": "sched: rt throttling vs no_hz\n\nWe need to teach no_hz about the rt throttling because its tick driven.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "af5ca3f4ec5cc4432a42a73b050dd8898ce8fd00", "tree": "3e5a3081b2802547f10da72c0026b4929d0e287b", "parents": [ "528a4bf1d5ffed310d26fc1d82d45c02949f71cf" ], "author": { "name": "Kay Sievers", "email": "kay.sievers@vrfy.org", "time": "Thu Dec 20 02:09:39 2007 +0100" }, "committer": { "name": "Greg Kroah-Hartman", "email": "gregkh@suse.de", "time": "Thu Jan 24 20:40:40 2008 -0800" }, "message": "Driver core: change sysdev classes to use dynamic kobject names\n\nAll kobjects require a dynamically allocated name now. We no longer\nneed to keep track if the name is statically assigned, we can just\nunconditionally free() all kobject names on cleanup.\n\nSigned-off-by: Kay Sievers \u003ckay.sievers@vrfy.org\u003e\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\n\n" }, { "commit": "cdc6f27d9e3c2f7ca1a3e19c6eabb1ad6a2add5d", "tree": "d557b594cd5d180e1ce91cac25a29d81a42499a5", "parents": [ "bd87f1f028ddaad45d4a9a3621dfe688c840ba41" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Tue Dec 18 18:05:58 2007 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Dec 18 18:05:58 2007 +0100" }, "message": "clockevents: fix reprogramming decision in oneshot broadcast\n\nResolve the following regression of a choppy, almost unusable laptop:\n\n http://lkml.org/lkml/2007/12/7/299\n http://bugzilla.kernel.org/show_bug.cgi?id\u003d9525\n\nA previous version of the code did the reprogramming of the broadcast\ndevice in the return from idle code. This was removed, but the logic in\ntick_handle_oneshot_broadcast() was kept the same.\n\nWhen a broadcast interrupt happens we signal the expiry to all CPUs\nwhich have an expired event. If none of the CPUs has an expired event,\nwhich can happen in dyntick mode, then we reprogram the broadcast\ndevice. We do not reprogram otherwise, but this is only correct if all\nCPUs, which are in the idle broadcast state have been woken up.\n\nThe code ignores, that there might be pending not yet expired events on\nother CPUs, which are in the idle broadcast state. So the delivery of\nthose events can be delayed for quite a time.\n\nChange the tick_handle_oneshot_broadcast() function to check for CPUs,\nwhich are in broadcast state and are not woken up by the current event,\nand enforce the rearming of the broadcast device for those CPUs.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "167b1de3ee4e50d65a2bd0a2667c9cd48faf54f3", "tree": "f1bdad90f0bb39fcaa9b2d6eed12fe2a0bb9d48e", "parents": [ "62f0f61e6673e67151a7c8c0f9a09c7ea43fe2b5" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri Dec 07 19:16:17 2007 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Dec 07 19:16:17 2007 +0100" }, "message": "clockevents: warn once when program_event() is called with negative expiry\n\nThe hrtimer problem with large relative timeouts resulting in a\nnegative expiry time went unnoticed as there is no check in the\nclockevents_program_event() code. Put a check there with a WARN_ONCE\nto avoid such problems in the future.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "d3938204468dccae16be0099a2abf53db4ed0505", "tree": "c38797ab6c6f0ef19e1da713da2c079c691affc7", "parents": [ "a531a141089714efe39eca89593524fdf05104f2" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Nov 28 15:52:56 2007 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Nov 28 15:52:56 2007 +0100" }, "message": "softlockup: fix false positives on CONFIG_NOHZ\n\nDavid Miller reported soft lockup false-positives that trigger\non NOHZ due to CPUs idling for more than 10 seconds.\n\nThe solution is touch the softlockup watchdog when we return from\nidle. (by definition we are not \u0027locked up\u0027 when we were idle)\n\n http://bugzilla.kernel.org/show_bug.cgi?id\u003d9409\n\nReported-by: David Miller \u003cdavem@davemloft.net\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "52bfb36050c8529d9031d2c2513b281a360922ec", "tree": "7d116ece2ed21b8319e800efc0c2fd70818f01d3", "parents": [ "8232fd625217dc641ed05dd238a8bb5c82828082" ], "author": { "name": "John Stultz", "email": "johnstul@us.ibm.com", "time": "Mon Nov 26 20:42:19 2007 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Nov 26 20:42:19 2007 +0100" }, "message": "time: add ADJ_OFFSET_SS_READ\n\nMichael Kerrisk reported that a long standing bug in the adjtimex()\nsystem call causes glibc\u0027s adjtime(3) function to deliver the wrong\nresults if \u0027delta\u0027 is NULL.\n\nadd the ADJ_OFFSET_SS_READ API detail, which will be used by glibc\nto fix this API compatibility bug.\n\nAlso see: http://bugzilla.kernel.org/show_bug.cgi?id\u003d6761\n\n[ mingo@elte.hu: added patch description and made it backwards compatible ]\n\nNOTE: the new flag is defined 0xa001 so that it returns -EINVAL on\nolder kernels - this way glibc can use it safely. Suggested by Ulrich\nDrepper.\n\nAcked-by: Ulrich Drepper \u003cdrepper@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "fa6a1a554b50cbb7763f6907e6fef927ead480d9", "tree": "9af94b945a5f10eaf2670ac14595db057d98054c", "parents": [ "d0974b11e0741034fc5d22838b9cb85402a280d6" ], "author": { "name": "David P. Reed", "email": "dpreed@reed.com", "time": "Wed Nov 14 17:49:21 2007 -0500" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@apollo.(none)", "time": "Sat Nov 17 16:27:01 2007 +0100" }, "message": "ntp: fix typo that makes sync_cmos_clock erratic\n\nFix a typo in ntp.c that has caused updating of the persistent (RTC)\nclock when synced to NTP to behave erratically.\n\nWhen debugging a freeze that arises on my AMD64 machines when I\nrun the ntpd service, I added a number of printk\u0027s to monitor the\nsync_cmos_clock procedure. I discovered that it was not syncing to\ncmos RTC every 11 minutes as documented, but instead would keep trying\nevery second for hours at a time. The reason turned out to be a typo\nin sync_cmos_clock, where it attempts to ensure that\nupdate_persistent_clock is called very close to 500 msec. after a 1\nsecond boundary (required by the PC RTC\u0027s spec). That typo referred to\n\"xtime\" in one spot, rather than \"now\", which is derived from \"xtime\"\nbut not equal to it. This makes the test erratic, creating a\n\"coin-flip\" that decides when update_persistent_clock is called - when\nit is called, which is rarely, it may be at any time during the one\nsecond period, rather than close to 500 msec, so the value written is\nneedlessly incorrect, too.\n\nSigned-off-by: David P. Reed\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n\n" }, { "commit": "8dce39c231af554932f8ab0d671e077ab6db9e46", "tree": "ac09b1b9f93b0056ea7e9709be56dbfbf447b894", "parents": [ "001e09e86c1c7612783f46256500c31e5ed55c6a" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Mon Nov 05 14:51:10 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Nov 05 15:12:33 2007 -0800" }, "message": "time: fix inconsistent function names in comments\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: john stultz \u003cjohnstul@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "129f1d2c5352eea3f7c8af9f8c1006dc0da7be52", "tree": "7037fc1981edb3797d31f1ba49b922e7b9bf0dfd", "parents": [ "64e38eb082bd845d6758079f65b191203986336d" ], "author": { "name": "Vegard Nossum", "email": "vegard.nossum@gmail.com", "time": "Thu Oct 11 08:23:34 2007 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Oct 29 09:39:38 2007 +0100" }, "message": "timer_list: Fix printk format strings\n\nThis makes sure printk format strings contain no more than a single\nline.\n\nSigned-off-by: Vegard Nossum \u003cvegard.nossum@gmail.com\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n\n" }, { "commit": "64e38eb082bd845d6758079f65b191203986336d", "tree": "13047d1a2c91d47cee6bffacfd27735d981a64aa", "parents": [ "2a397e82c7db18019e408f953dd58dc1963a328c" ], "author": { "name": "Adrian Bunk", "email": "bunk@kernel.org", "time": "Wed Oct 24 18:24:22 2007 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Oct 29 09:39:38 2007 +0100" }, "message": "clockevents: unexport tick_nohz_get_sleep_length\n\nThis patch removes the unused \nEXPORT_SYMBOL_GPL(tick_nohz_get_sleep_length).\n\nSigned-off-by: Adrian Bunk \u003cbunk@kernel.org\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n\n" }, { "commit": "c4ec20717313daafba59225f812db89595952b83", "tree": "253337453b1dc965c40668e4949337ed1c46cab7", "parents": [ "ec2626815bf9a9922e49820b03e670e833f3ca3c", "00a2b433557f10736e8a02de619b3e9052556c12" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Oct 19 13:12:46 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Oct 19 13:12:46 2007 -0700" }, "message": "Merge branch \u0027release\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6\n\n* \u0027release\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (41 commits)\n ACPICA: hw: Don\u0027t carry spinlock over suspend\n ACPICA: hw: remove use_lock flag from acpi_hw_register_{read, write}\n ACPI: cpuidle: port idle timer suspend/resume workaround to cpuidle\n ACPI: clean up acpi_enter_sleep_state_prep\n Hibernation: Make sure that ACPI is enabled in acpi_hibernation_finish\n ACPI: suppress uninitialized var warning\n cpuidle: consolidate 2.6.22 cpuidle branch into one patch\n ACPI: thinkpad-acpi: skip blanks before the data when parsing sysfs\n ACPI: AC: Add sysfs interface\n ACPI: SBS: Add sysfs alarm\n ACPI: SBS: Add ACPI_PROCFS around procfs handling code.\n ACPI: SBS: Add support for power_supply class (and sysfs)\n ACPI: SBS: Make SBS reads table-driven.\n ACPI: SBS: Simplify data structures in SBS\n ACPI: SBS: Split host controller (ACPI0001) from SBS driver (ACPI0002)\n ACPI: EC: Add new query handler to list head.\n ACPI: Add acpi_bus_generate_event4() function\n ACPI: Battery: add sysfs alarm\n ACPI: Battery: Add sysfs support\n ACPI: Battery: Misc clean-ups, no functional changes\n ...\n\nFix up conflicts in drivers/misc/thinkpad_acpi.[ch] manually\n" }, { "commit": "2e1975868ac9d41211fcaa6f2c5e44c4e7ff9e5b", "tree": "fdf1304a9bcd092c63df6423327f33fcf5c3d44b", "parents": [ "03ff17979c58a0b63b0fe30a373f41b719731bd2" ], "author": { "name": "Matthias Kaehlcke", "email": "matthias.kaehlcke@gmail.com", "time": "Thu Oct 18 23:39:58 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Oct 19 11:53:38 2007 -0700" }, "message": "kernel/time/clocksource.c: Use list_for_each_entry instead of list_for_each\n\nkernel/time/clocksource.c: Convert list_for_each to\nlist_for_each_entry in clocksource_resume(),\nsysfs_override_clocksource() and show_available_clocksources()\n\nSigned-off-by: Matthias Kaehlcke \u003cmatthias.kaehlcke@gmail.com\u003e\nAcked-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: john stultz \u003cjohnstul@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3dfbc88464934fb6924a388bc03961d44f387926", "tree": "3ddb9a50bb2df909d6e629783bd41301541feceb", "parents": [ "e6d5a11dad44b8ae18ca8fc4ecb72ccccfa0a2d2" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Oct 17 18:04:32 2007 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@inhelltoy.tec.linutronix.de", "time": "Wed Oct 17 20:15:13 2007 +0200" }, "message": "x86: C1E late detection fix. Really switch off lapic timer\n\nDoh, I completely missed that devices marked DUMMY are not running\nthe set_mode function. So we force broadcasting, but we keep the\nlocal APIC timer running.\n\nLet the clock event layer mark the device _after_ switching it off.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "b2d9323d139f5c384fa1ef1d74773b4db1c09b3d", "tree": "ad2705044b5b781aeb1a119d9c8548a044c7e21f", "parents": [ "3075d9da0b4ccc88959db30de80ebd11d2dde175" ], "author": { "name": "john stultz", "email": "johnstul@us.ibm.com", "time": "Tue Oct 16 23:27:18 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:42:53 2007 -0700" }, "message": "Use num_possible_cpus() instead of NR_CPUS for timer distribution\n\nTo avoid lock contention, we distribute the sched_timer calls across the\ncpus so they do not trigger at the same instant. However, I used NR_CPUS,\nwhich can cause needless grouping on small smp systems depending on your\nkernel config. This patch converts to using num_possible_cpus() so we\nspread it as evenly as possible on every machine.\n\nBriefly tested w/ NR_CPUS\u003d255 and verified reduced contention.\n\nSigned-off-by: John Stultz \u003cjohnstul@us.ibm.com\u003e\nAcked-by: 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": "ba2a631b14fe8a9c122801c648c49a543d020d8d", "tree": "7f89f02d314c9aec6959066a1285fcd16f5bc2b1", "parents": [ "f44ec6f3f89889a469773b1fd894f8fcc07c29cf" ], "author": { "name": "Adrian Bunk", "email": "bunk@kernel.org", "time": "Tue Oct 16 23:27:16 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:42:53 2007 -0700" }, "message": "kernel/time/timekeeping.c: cleanups\n\n- remove the no longer required __attribute__((weak)) of xtime_lock\n- remove the following no longer used EXPORT_SYMBOL\u0027s:\n - xtime\n - xtime_lock\n\nSigned-off-by: Adrian Bunk \u003cbunk@kernel.org\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: john stultz \u003cjohnstul@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "bf020cb7b3918e186309db21d75cb91ebafc9d6f", "tree": "7a03b7a566ce3f3119812e092b72e3c65fc8b91a", "parents": [ "a9022e9cb9e919e31d5bc15fcef5c7186740645e" ], "author": { "name": "Avi Kivity", "email": "avi@qumranet.com", "time": "Tue Oct 16 23:26:24 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Oct 17 08:42:48 2007 -0700" }, "message": "time: simplify smp_call_function_single() call sequence\n\nsmp_call_function_single() now knows how to call the function on the\ncurrent cpu.\n\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Avi Kivity \u003cavi@qumranet.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f20bf6125605acbbc7eb8c9420d7221c91aa83eb", "tree": "ce3dd753431dd32b346aa19f2f7b6bb84bb1f22e", "parents": [ "8636225e8d23e6079d43f56faf415bd71b589dc0" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Oct 16 16:09:20 2007 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 10:01:50 2007 -0700" }, "message": "time: introduce xtime_seconds\n\nimprove performance of sys_time(). sys_time() returns time in seconds,\nbut it does so by calling do_gettimeofday() and then returning the\ntv_sec portion of the GTOD time. But the data structure \"xtime\", which\nis updated by every timer/scheduler tick, already offers HZ granularity\ntime.\n\nthe patch improves the sysbench oltp macrobenchmark by 4-5% on an AMD\ndual-core system:\n\nv2.6.23:\n\n#threads\n\n 1: transactions: 4073 (407.23 per sec.)\n 2: transactions: 8530 (852.81 per sec.)\n 3: transactions: 8321 (831.88 per sec.)\n 4: transactions: 8407 (840.58 per sec.)\n 5: transactions: 8070 (806.74 per sec.)\n\nv2.6.23 + sys_time-speedup.patch:\n\n 1: transactions: 4281 (428.09 per sec.)\n 2: transactions: 8910 (890.85 per sec.)\n 3: transactions: 8659 (865.79 per sec.)\n 4: transactions: 8676 (867.34 per sec.)\n 5: transactions: 8532 (852.91 per sec.)\n\nand by 4-5% on an Intel dual-core system too:\n\n2.6.23:\n\n 1: transactions: 4560 (455.94 per sec.)\n 2: transactions: 10094 (1009.30 per sec.)\n 3: transactions: 9755 (975.36 per sec.)\n 4: transactions: 9859 (985.78 per sec.)\n 5: transactions: 9701 (969.72 per sec.)\n\n2.6.23 + sys_time-speedup.patch:\n\n 1: transactions: 4779 (477.84 per sec.)\n 2: transactions: 10103 (1010.14 per sec.)\n 3: transactions: 10141 (1013.93 per sec.)\n 4: transactions: 10371 (1036.89 per sec.)\n 5: transactions: 10178 (1017.50 per sec.)\n\n(the more CPUs the system has, the more speedup this patch gives for\nthis particular workload.)\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" } ], "next": "1595f452f3d8daa066bfd3ba4120754bed3329e1" }