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2007-08-11Hibernation: do not try to mark invalid PFNs as nosaveRafael J. Wysocki
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>
2007-08-11Fix missing numa_zonelist_order sysctlLee Schermerhorn
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>
2007-08-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-schedLinus Torvalds
* 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() ...
2007-08-09Revert "genirq: temporary fix for level-triggered IRQ resend"Linus Torvalds
This reverts commit 0fc4969b866671dfe39b1a9119d0fdc7ea0f63e5. It was always meant to be temporary, but it's generating more useless noise than anything else, and we probably should never have done it in the generic kernel (only had the people involved test it on their own). Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-09sched: refine negative nice level granularityIngo Molnar
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>
2007-08-09sched: fix update_stats_enqueue() reniced codepathIngo Molnar
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>
2007-08-09sched: round a bit betterIngo Molnar
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>
2007-08-09sched: make the multiplication table more accurateIngo Molnar
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>
2007-08-09sched: optimize update_rq_clock() calls in the load-balancerIngo Molnar
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>
2007-08-09sched: optimize activate_task()Ingo Molnar
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>
2007-08-09sched: clean up set_curr_task_fair()Ingo Molnar
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>
2007-08-09sched: remove __update_rq_clock() call from entity_tick()Ingo Molnar
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>
2007-08-09sched: move the __update_rq_clock() call to scheduler_tick()Ingo Molnar
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>
2007-08-09sched debug: remove the 'u64 now' parameter from print_task()/_rq()Ingo Molnar
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>
2007-08-09sched: remove the 'u64 now' local variablesIngo Molnar
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>
2007-08-09sched: remove the 'u64 now' parameter from deactivate_task()Ingo Molnar
remove the 'u64 now' parameter from deactivate_task(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-08-09sched: remove the 'u64 now' parameter from dequeue_task()Ingo Molnar
remove the 'u64 now' parameter from dequeue_task(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-08-09sched: remove the 'u64 now' parameter from enqueue_task()Ingo Molnar
remove the 'u64 now' parameter from enqueue_task(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-08-09sched: remove the 'u64 now' parameter from dec_nr_running()Ingo Molnar
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>
2007-08-09sched: remove the 'u64 now' parameter from inc_nr_running()Ingo Molnar
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>
2007-08-09sched: remove the 'u64 now' parameter from dec_load()Ingo Molnar
remove the 'u64 now' parameter from dec_load(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-08-09sched: remove the 'u64 now' parameter from inc_load()Ingo Molnar
remove the 'u64 now' parameter from inc_load(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-08-09sched: remove the 'u64 now' parameter from update_curr_load()Ingo Molnar
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>
2007-08-09sched: remove the 'u64 now' parameter from ->task_new()Ingo Molnar
remove the 'u64 now' parameter from ->task_new(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-08-09sched: remove the 'u64 now' parameter from ->put_prev_task()Ingo Molnar
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>
2007-08-09sched: remove the 'u64 now' parameter from pick_next_task()Ingo Molnar
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>
2007-08-09sched: remove the 'u64 now' parameter from ->pick_next_task()Ingo Molnar
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>
2007-08-09sched: remove the 'u64 now' parameter from ->dequeue_task()Ingo Molnar
remove the 'u64 now' parameter from ->dequeue_task(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-08-09sched: remove the 'u64 now' parameter from ->enqueue_task()Ingo Molnar
remove the 'u64 now' parameter from ->enqueue_task(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-08-09sched: remove the 'u64 now' parameter from update_curr_rt()Ingo Molnar
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>
2007-08-09sched: remove the 'u64 now' parameter from put_prev_entity()Ingo Molnar
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>
2007-08-09sched: remove the 'u64 now' parameter from pick_next_entity()Ingo Molnar
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>
2007-08-09sched: remove the 'u64 now' parameter from set_next_entity()Ingo Molnar
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>
2007-08-09sched: remove the 'u64 now' parameter from dequeue_entity()Ingo Molnar
remove the 'u64 now' parameter from dequeue_entity(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-08-09sched: remove the 'u64 now' parameter from enqueue_entity()Ingo Molnar
remove the 'u64 now' parameter from enqueue_entity(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-08-09sched: remove the 'u64 now' parameter from enqueue_sleeper()Ingo Molnar
remove the 'u64 now' parameter from enqueue_sleeper(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-08-09sched: remove the 'u64 now' parameter from __enqueue_sleeper()Ingo Molnar
remove the 'u64 now' parameter from __enqueue_sleeper(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-08-09sched: remove the 'u64 now' parameter from update_stats_curr_end()Ingo Molnar
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>
2007-08-09sched: remove the 'u64 now' parameter from update_stats_dequeue()Ingo Molnar
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>
2007-08-09sched: remove the 'u64 now' parameter from update_stats_curr_start()Ingo Molnar
remove the 'u64 now' parameter from update_stats_curr_start(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-08-09sched: remove the 'u64 now' parameter from update_stats_wait_end()Ingo Molnar
remove the 'u64 now' parameter from update_stats_wait_end(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-08-09sched: remove the 'u64 now' parameter from __update_stats_wait_end()Ingo Molnar
remove the 'u64 now' parameter from __update_stats_wait_end(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-08-09sched: remove the 'u64 now' parameter from update_stats_enqueue()Ingo Molnar
remove the 'u64 now' parameter from update_stats_enqueue(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-08-09sched: remove the 'u64 now' parameter from update_stats_wait_start()Ingo Molnar
remove the 'u64 now' parameter from update_stats_wait_start(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-08-09sched: remove the 'u64 now' parameter from update_curr()Ingo Molnar
remove the 'u64 now' parameter from update_curr(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-08-09sched: remove the 'u64 now' parameter from print_cfs_rq()Ingo Molnar
remove the 'u64 now' parameter from print_cfs_rq(). ( identity transformation that causes no change in functionality. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-08-09sched: remove 'now' use from assignmentsIngo Molnar
change all 'now' timestamp uses in assignments to rq->clock. ( this is an identity transformation that causes no functionality change: all such new rq->clock is necessarily preceded by an update_rq_clock() call. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-08-09sched: remove __rq_clock()Ingo Molnar
remove the (now unused) __rq_clock() function. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-08-09sched: eliminate __rq_clock() useIngo Molnar
eliminate __rq_clock() use by changing it to: __update_rq_clock(rq) now = rq->clock; identity transformation - no change in behavior. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-08-09sched: remove rq_clock()Ingo Molnar
remove the now unused rq_clock() function. Signed-off-by: Ingo Molnar <mingo@elte.hu>