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authorLinus Torvalds <torvalds@linux-foundation.org>2009-01-03 22:56:24 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-03 22:56:24 +0300
commit61420f59a589c0668f70cbe725785837c78ece90 (patch)
tree79ae77d731cd2425677b9527d50079d8cf34c3b2 /kernel/time
parentd97106ab53f812910a62d18afb9dbe882819c1ba (diff)
parentc742b31c03f37c5c499178f09f57381aa6c70131 (diff)
downloadlinux-61420f59a589c0668f70cbe725785837c78ece90.tar.xz
Merge branch 'cputime' of git://git390.osdl.marist.edu/pub/scm/linux-2.6
* 'cputime' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: [PATCH] fast vdso implementation for CLOCK_THREAD_CPUTIME_ID [PATCH] improve idle cputime accounting [PATCH] improve precision of idle time detection. [PATCH] improve precision of process accounting. [PATCH] idle cputime accounting [PATCH] fix scaled & unscaled cputime accounting
Diffstat (limited to 'kernel/time')
-rw-r--r--kernel/time/tick-sched.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 76a574bbef97..1b6c05bd0d0a 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -419,7 +419,9 @@ void tick_nohz_restart_sched_tick(void)
{
int cpu = smp_processor_id();
struct tick_sched *ts = &per_cpu(tick_cpu_sched, cpu);
+#ifndef CONFIG_VIRT_CPU_ACCOUNTING
unsigned long ticks;
+#endif
ktime_t now;
local_irq_disable();
@@ -441,6 +443,7 @@ void tick_nohz_restart_sched_tick(void)
tick_do_update_jiffies64(now);
cpumask_clear_cpu(cpu, nohz_cpu_mask);
+#ifndef CONFIG_VIRT_CPU_ACCOUNTING
/*
* We stopped the tick in idle. Update process times would miss the
* time we slept as update_process_times does only a 1 tick
@@ -450,12 +453,9 @@ void tick_nohz_restart_sched_tick(void)
/*
* We might be one off. Do not randomly account a huge number of ticks!
*/
- if (ticks && ticks < LONG_MAX) {
- add_preempt_count(HARDIRQ_OFFSET);
- account_system_time(current, HARDIRQ_OFFSET,
- jiffies_to_cputime(ticks));
- sub_preempt_count(HARDIRQ_OFFSET);
- }
+ if (ticks && ticks < LONG_MAX)
+ account_idle_ticks(ticks);
+#endif
touch_softlockup_watchdog();
/*