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* Merge git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-schedLinus Torvalds2007-08-122-30/+30
|\ | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched: sched: run_rebalance_domains: s/SCHED_IDLE/CPU_IDLE/ sched: fix sleeper bonus sched: make global code static
| * sched: run_rebalance_domains: s/SCHED_IDLE/CPU_IDLE/Oleg Nesterov2007-08-121-1/+1
| | | | | | | | | | | | | | | | | | | | rebalance_domains(SCHED_IDLE) looks strange (typo), change it to CPU_IDLE. the effect of this bug was slightly more agressive idle-balancing on SMP than intended. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: fix sleeper bonusIngo Molnar2007-08-121-6/+6
| | | | | | | | | | | | | | | | | | Peter Ziljstra noticed that the sleeper bonus deduction code was not properly rate-limited: a task that scheduled more frequently would get a disproportionately large deduction. So limit the deduction to delta_exec. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: make global code staticAdrian Bunk2007-08-121-23/+23
| | | | | | | | | | | | | | | | | | | | | | | | This patch makes the following needlessly global code static: - arch_reinit_sched_domains() - struct attr_sched_mc_power_savings - struct attr_sched_smt_power_savings Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | genirq: suppress resend of level interruptsThomas Gleixner2007-08-121-1/+6
| | | | | | | | | | | | | | | | | | | | Level type interrupts are resent by the interrupt hardware when they are still active at irq_enable(). Suppress the resend mechanism for interrupts marked as level. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | genirq: cleanup mismerge artifactThomas Gleixner2007-08-121-4/+1Star
|/ | | | | | | | | | | | Commit 5a43a066b11ac2fe84cf67307f20b83bea390f83: "genirq: Allow fasteoi handler to retrigger disabled interrupts" was erroneously applied to handle_level_irq(). This added the irq retrigger / resend functionality to the level irq handler. Revert the offending bits. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-schedLinus Torvalds2007-08-123-7/+17
|\ | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched: sched debug: dont print kernel address in /proc/sched_debug sched: fix typo in the FAIR_GROUP_SCHED branch sched: improve rq-clock overflow logic
| * sched debug: dont print kernel address in /proc/sched_debugIngo Molnar2007-08-101-1/+1
| | | | | | | | | | | | | | | | Arjan van de Ven pointed out that we should not print kernel addresses in world-readable /proc files - fix that. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
| * sched: fix typo in the FAIR_GROUP_SCHED branchIngo Molnar2007-08-101-4/+3Star
| | | | | | | | | | | | | | while there's no in-tree way to turn group scheduling at the moment, fix a typo in it nevertheless. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: improve rq-clock overflow logicIngo Molnar2007-08-101-2/+13
| | | | | | | | | | | | | | | | | | | | | | | | improve the rq-clock overflow logic: limit the absolute rq->clock delta since the last scheduler tick, instead of limiting the delta itself. tested by Arjan van de Ven - whole laptop was misbehaving due to an incorrectly calibrated cpu_khz confusing sched_clock(). Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
* | fix compilation with gcc 4.2Peter Chubb2007-08-122-2/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | gcc-4.2 is a lot more picky about its symbol handling. EXPORT_SYMBOL no longer works on symbols that are undefined or defined with static scope. For example, with CONFIG_PROFILE off, I see: kernel/profile.c:206: error: __ksymtab_profile_event_unregister causes a section type conflict kernel/profile.c:205: error: __ksymtab_profile_event_register causes a section type conflict This patch moves the EXPORTs inside the #ifdef CONFIG_PROFILE, so we only try to export symbols that are defined. Also, in kernel/kprobes.c there's an EXPORT_SYMBOL_GPL() for jprobes_return, which if CONFIG_JPROBES is undefined is a static inline and gives the same error. And in drivers/acpi/resources/rsxface.c, there's an ACPI_EXPORT_SYMBOPL() for a static symbol. If it's static, it's not accessible from outside the compilation unit, so should bot be exported. These three changes allow building a zx1_defconfig kernel with gcc 4.2 on IA64. [akpm@linux-foundation.org: export jpobe_return properly] Signed-off-by: Peter Chubb <peterc@gelato.unsw.edu.au> Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | timer: remove clockevents_unregister_notifierMiao Xie2007-08-121-10/+0Star
| | | | | | | | | | | | | | | | | | | | I find a function(clockevents_unregister_notifier) which is not called by anything in tree. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Hibernation: do not try to mark invalid PFNs as nosaveRafael J. Wysocki2007-08-121-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On some systems some PFNs reported by the early initialization code as 'nosave' may be invalid. If we try to set the corresponding bits in the hibernation bitmap, BUG_ON() in memory_bm_find_bit() will be triggered and the system won't be able to boot (cf. https://bugzilla.novell.com/show_bug.cgi?id=296242). Prevent this from happening by verifying if the 'nosave' PFNs are valid in mark_nosave_pages(). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Fix missing numa_zonelist_order sysctlLee Schermerhorn2007-08-121-1/+1
|/ | | | | | | | | Misplaced #endif is hiding the numa_zonelist_order sysctl when !SECURITY. Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com> Cc: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-schedLinus Torvalds2007-08-095-322/+303Star
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched: (61 commits) sched: refine negative nice level granularity sched: fix update_stats_enqueue() reniced codepath sched: round a bit better sched: make the multiplication table more accurate sched: optimize update_rq_clock() calls in the load-balancer sched: optimize activate_task() sched: clean up set_curr_task_fair() sched: remove __update_rq_clock() call from entity_tick() sched: move the __update_rq_clock() call to scheduler_tick() sched debug: remove the 'u64 now' parameter from print_task()/_rq() sched: remove the 'u64 now' local variables sched: remove the 'u64 now' parameter from deactivate_task() sched: remove the 'u64 now' parameter from dequeue_task() sched: remove the 'u64 now' parameter from enqueue_task() sched: remove the 'u64 now' parameter from dec_nr_running() sched: remove the 'u64 now' parameter from inc_nr_running() sched: remove the 'u64 now' parameter from dec_load() sched: remove the 'u64 now' parameter from inc_load() sched: remove the 'u64 now' parameter from update_curr_load() sched: remove the 'u64 now' parameter from ->task_new() ...
| * sched: refine negative nice level granularityIngo Molnar2007-08-091-6/+10
| | | | | | | | | | | | | | | | | | | | refine the granularity of negative nice level tasks: let them reschedule more often to offset the effect of them consuming their wait_runtime proportionately slower. (This makes nice-0 task scheduling smoother in the presence of negatively reniced tasks.) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: fix update_stats_enqueue() reniced codepathIngo Molnar2007-08-091-1/+2
| | | | | | | | | | | | | | | | the key has to be rescaled to /weight even if it has a positive value. (this change only affects the scheduling of reniced tasks) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: round a bit betterIngo Molnar2007-08-091-7/+11
| | | | | | | | | | | | | | | | | | round a tiny bit better in high-frequency rescheduling scenarios, by rounding around zero instead of rounding down. (this is pretty theoretical though) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: make the multiplication table more accurateIngo Molnar2007-08-091-13/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | do small deltas in the weight and multiplication constant table so that the worst-case numeric error is better than 1:100000000. (8 digits) the current error table is: nice mult * inv_mult error ------------------------------------------ -20: 88761 * 48388 -0.0000000065 -19: 71755 * 59856 -0.0000000037 -18: 56483 * 76040 0.0000000056 -17: 46273 * 92818 0.0000000042 -16: 36291 * 118348 -0.0000000065 -15: 29154 * 147320 -0.0000000037 -14: 23254 * 184698 -0.0000000009 -13: 18705 * 229616 -0.0000000037 -12: 14949 * 287308 -0.0000000009 -11: 11916 * 360437 -0.0000000009 -10: 9548 * 449829 -0.0000000009 -9: 7620 * 563644 -0.0000000037 -8: 6100 * 704093 0.0000000009 -7: 4904 * 875809 0.0000000093 -6: 3906 * 1099582 -0.0000000009 -5: 3121 * 1376151 -0.0000000058 -4: 2501 * 1717300 0.0000000009 -3: 1991 * 2157191 -0.0000000035 -2: 1586 * 2708050 0.0000000009 -1: 1277 * 3363326 0.0000000014 0: 1024 * 4194304 0.0000000000 1: 820 * 5237765 0.0000000009 2: 655 * 6557202 0.0000000033 3: 526 * 8165337 -0.0000000079 4: 423 * 10153587 0.0000000012 5: 335 * 12820798 0.0000000079 6: 272 * 15790321 0.0000000037 7: 215 * 19976592 -0.0000000037 8: 172 * 24970740 -0.0000000037 9: 137 * 31350126 -0.0000000079 10: 110 * 39045157 -0.0000000061 11: 87 * 49367440 -0.0000000037 12: 70 * 61356676 0.0000000056 13: 56 * 76695844 -0.0000000075 14: 45 * 95443717 -0.0000000072 15: 36 * 119304647 -0.0000000009 16: 29 * 148102320 -0.0000000037 17: 23 * 186737708 -0.0000000028 18: 18 * 238609294 -0.0000000009 19: 15 * 286331153 -0.0000000002 Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: optimize update_rq_clock() calls in the load-balancerIngo Molnar2007-08-091-6/+8
| | | | | | | | | | | | | | | | optimize update_rq_clock() calls in the load-balancer: update them right after locking the runqueue(s) so that the pull functions do not have to call it. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: optimize activate_task()Ingo Molnar2007-08-091-10/+9Star
| | | | | | | | | | | | | | | | optimize activate_task() by removing update_rq_clock() from it. (and add update_rq_clock() to all callsites of activate_task() that did not have it before.) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: clean up set_curr_task_fair()Ingo Molnar2007-08-091-11/+4Star
| | | | | | | | | | | | | | | | | | | | | | | | clean up set_curr_task_fair(). ( identity transformation that causes no change in functionality. ) text data bss dec hex filename 39170 3750 36 42956 a7cc sched.o.before 39170 3750 36 42956 a7cc sched.o.after Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: remove __update_rq_clock() call from entity_tick()Ingo Molnar2007-08-091-3/+0Star
| | | | | | | | | | | | | | | | | | remove __update_rq_clock() call from entity_tick(). no change in functionality because scheduler_tick() already calls __update_rq_clock(). Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: move the __update_rq_clock() call to scheduler_tick()Ingo Molnar2007-08-091-2/+1Star
| | | | | | | | | | | | | | | | | | | | | | move the __update_rq_clock() call from update_cpu_load() to scheduler_tick(). ( identity transformation that causes no change in functionality. ) this allows the direct use of rq->clock in ->task_tick() functions. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched debug: remove the 'u64 now' parameter from print_task()/_rq()Ingo Molnar2007-08-091-6/+6
| | | | | | | | | | | | | | | | remove the 'u64 now' parameter from sched_debug.c:print_task()/_rq(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: remove the 'u64 now' local variablesIngo Molnar2007-08-092-22/+0Star
| | | | | | | | | | | | | | | | final step: remove all (now superfluous) 'u64 now' variables. ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: remove the 'u64 now' parameter from deactivate_task()Ingo Molnar2007-08-091-8/+7Star
| | | | | | | | | | | | | | | | remove the 'u64 now' parameter from deactivate_task(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: remove the 'u64 now' parameter from dequeue_task()Ingo Molnar2007-08-091-5/+4Star
| | | | | | | | | | | | | | | | remove the 'u64 now' parameter from dequeue_task(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: remove the 'u64 now' parameter from enqueue_task()Ingo Molnar2007-08-091-6/+5Star
| | | | | | | | | | | | | | | | remove the 'u64 now' parameter from enqueue_task(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: remove the 'u64 now' parameter from dec_nr_running()Ingo Molnar2007-08-091-2/+2
| | | | | | | | | | | | | | | | remove the 'u64 now' parameter from dec_nr_running(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: remove the 'u64 now' parameter from inc_nr_running()Ingo Molnar2007-08-091-4/+4
| | | | | | | | | | | | | | | | remove the 'u64 now' parameter from inc_nr_running(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: remove the 'u64 now' parameter from dec_load()Ingo Molnar2007-08-091-4/+3Star
| | | | | | | | | | | | | | | | remove the 'u64 now' parameter from dec_load(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: remove the 'u64 now' parameter from inc_load()Ingo Molnar2007-08-091-4/+3Star
| | | | | | | | | | | | | | | | remove the 'u64 now' parameter from inc_load(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: remove the 'u64 now' parameter from update_curr_load()Ingo Molnar2007-08-091-4/+4
| | | | | | | | | | | | | | | | remove the 'u64 now' parameter from update_curr_load(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: remove the 'u64 now' parameter from ->task_new()Ingo Molnar2007-08-092-2/+2
| | | | | | | | | | | | | | | | remove the 'u64 now' parameter from ->task_new(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: remove the 'u64 now' parameter from ->put_prev_task()Ingo Molnar2007-08-094-4/+4
| | | | | | | | | | | | | | | | remove the 'u64 now' parameter from ->put_prev_task(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: remove the 'u64 now' parameter from pick_next_task()Ingo Molnar2007-08-091-3/+3
| | | | | | | | | | | | | | | | remove the 'u64 now' parameter from pick_next_task(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: remove the 'u64 now' parameter from ->pick_next_task()Ingo Molnar2007-08-094-5/+5
| | | | | | | | | | | | | | | | remove the 'u64 now' parameter from ->pick_next_task(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: remove the 'u64 now' parameter from ->dequeue_task()Ingo Molnar2007-08-094-6/+4Star
| | | | | | | | | | | | | | | | remove the 'u64 now' parameter from ->dequeue_task(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: remove the 'u64 now' parameter from ->enqueue_task()Ingo Molnar2007-08-093-5/+3Star
| | | | | | | | | | | | | | | | remove the 'u64 now' parameter from ->enqueue_task(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: remove the 'u64 now' parameter from update_curr_rt()Ingo Molnar2007-08-091-3/+3
| | | | | | | | | | | | | | | | remove the 'u64 now' parameter from update_curr_rt(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: remove the 'u64 now' parameter from put_prev_entity()Ingo Molnar2007-08-091-3/+2Star
| | | | | | | | | | | | | | | | remove the 'u64 now' parameter from put_prev_entity(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: remove the 'u64 now' parameter from pick_next_entity()Ingo Molnar2007-08-091-2/+2
| | | | | | | | | | | | | | | | remove the 'u64 now' parameter from pick_next_entity(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: remove the 'u64 now' parameter from set_next_entity()Ingo Molnar2007-08-091-3/+3
| | | | | | | | | | | | | | | | remove the 'u64 now' parameter from set_next_entity(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: remove the 'u64 now' parameter from dequeue_entity()Ingo Molnar2007-08-091-5/+4Star
| | | | | | | | | | | | | | | | remove the 'u64 now' parameter from dequeue_entity(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: remove the 'u64 now' parameter from enqueue_entity()Ingo Molnar2007-08-091-5/+4Star
| | | | | | | | | | | | | | | | remove the 'u64 now' parameter from enqueue_entity(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: remove the 'u64 now' parameter from enqueue_sleeper()Ingo Molnar2007-08-091-3/+2Star
| | | | | | | | | | | | | | | | remove the 'u64 now' parameter from enqueue_sleeper(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: remove the 'u64 now' parameter from __enqueue_sleeper()Ingo Molnar2007-08-091-3/+2Star
| | | | | | | | | | | | | | | | remove the 'u64 now' parameter from __enqueue_sleeper(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: remove the 'u64 now' parameter from update_stats_curr_end()Ingo Molnar2007-08-091-2/+2
| | | | | | | | | | | | | | | | remove the 'u64 now' parameter from update_stats_curr_end(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: remove the 'u64 now' parameter from update_stats_dequeue()Ingo Molnar2007-08-091-2/+2
| | | | | | | | | | | | | | | | remove the 'u64 now' parameter from update_stats_dequeue(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
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