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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2016-09-26 02:29:17 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-09-30 11:46:38 +0200 |
| commit | f9094a65755df86ec931f47b781f68ea3095cb56 (patch) | |
| tree | 0c9a4d3c49652871a9f475a939ff66e91b7d9943 /kernel/sched | |
| parent | b60205c7c558330e4e2b5df498355ec959457358 (diff) | |
| download | linux-f9094a65755df86ec931f47b781f68ea3095cb56.tar.gz linux-f9094a65755df86ec931f47b781f68ea3095cb56.tar.bz2 linux-f9094a65755df86ec931f47b781f68ea3095cb56.zip | |
sched/irqtime: No need for preempt-safe accessors
We can safely use the preempt-unsafe accessors for irqtime when we
flush its counters to kcpustat as IRQs are disabled at this time.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Wanpeng Li <wanpeng.li@hotmail.com>
Link: http://lkml.kernel.org/r/1474849761-12678-2-git-send-email-fweisbec@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/cputime.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c index b93c72d5f64f..f1110760ff6c 100644 --- a/kernel/sched/cputime.c +++ b/kernel/sched/cputime.c @@ -82,7 +82,7 @@ static cputime_t irqtime_account_hi_update(cputime_t maxtime) cputime_t irq_cputime; local_irq_save(flags); - irq_cputime = nsecs_to_cputime64(this_cpu_read(cpu_hardirq_time)) - + irq_cputime = nsecs_to_cputime64(__this_cpu_read(cpu_hardirq_time)) - cpustat[CPUTIME_IRQ]; irq_cputime = min(irq_cputime, maxtime); cpustat[CPUTIME_IRQ] += irq_cputime; @@ -97,7 +97,7 @@ static cputime_t irqtime_account_si_update(cputime_t maxtime) cputime_t softirq_cputime; local_irq_save(flags); - softirq_cputime = nsecs_to_cputime64(this_cpu_read(cpu_softirq_time)) - + softirq_cputime = nsecs_to_cputime64(__this_cpu_read(cpu_softirq_time)) - cpustat[CPUTIME_SOFTIRQ]; softirq_cputime = min(softirq_cputime, maxtime); cpustat[CPUTIME_SOFTIRQ] += softirq_cputime; |