From be9095ed4fb3cf69e9fdf64e28ff6b5bd0ec7215 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Tue, 31 Jan 2017 04:09:38 +0100 Subject: sched/cputime: Push time to account_steal_time() in nsecs This is one more step toward converting cputime accounting to pure nsecs. Signed-off-by: Frederic Weisbecker Cc: Benjamin Herrenschmidt Cc: Fenghua Yu Cc: Heiko Carstens Cc: Linus Torvalds Cc: Martin Schwidefsky Cc: Michael Ellerman Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Rik van Riel Cc: Stanislaw Gruszka Cc: Thomas Gleixner Cc: Tony Luck Cc: Wanpeng Li Link: http://lkml.kernel.org/r/1485832191-26889-23-git-send-email-fweisbec@gmail.com Signed-off-by: Ingo Molnar --- kernel/sched/cputime.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) (limited to 'kernel') diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c index 55d31c35833a..9a8028760930 100644 --- a/kernel/sched/cputime.c +++ b/kernel/sched/cputime.c @@ -207,11 +207,11 @@ void account_system_time(struct task_struct *p, int hardirq_offset, * Account for involuntary wait time. * @cputime: the cpu time spent in involuntary wait */ -void account_steal_time(cputime_t cputime) +void account_steal_time(u64 cputime) { u64 *cpustat = kcpustat_this_cpu->cpustat; - cpustat[CPUTIME_STEAL] += cputime_to_nsecs(cputime); + cpustat[CPUTIME_STEAL] += cputime; } /* @@ -239,14 +239,15 @@ static __always_inline cputime_t steal_account_process_time(cputime_t maxtime) #ifdef CONFIG_PARAVIRT if (static_key_false(¶virt_steal_enabled)) { cputime_t steal_cputime; - u64 steal; + u64 steal, rounded; steal = paravirt_steal_clock(smp_processor_id()); steal -= this_rq()->prev_steal_time; steal_cputime = min(nsecs_to_cputime(steal), maxtime); - account_steal_time(steal_cputime); - this_rq()->prev_steal_time += cputime_to_nsecs(steal_cputime); + rounded = cputime_to_nsecs(steal_cputime); + account_steal_time(rounded); + this_rq()->prev_steal_time += rounded; return steal_cputime; } -- cgit v1.2.3