Commit-ID: 18b43a9bd7ae91185e398dd983fb4fffb9e81b3a Gitweb: http://git.kernel.org/tip/18b43a9bd7ae91185e398dd983fb4fffb9e81b3a Author: Frederic Weisbecker <fweis...@gmail.com> AuthorDate: Tue, 31 Jan 2017 04:09:39 +0100 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Wed, 1 Feb 2017 09:13:57 +0100
sched/cputime: Push time to account_idle_time() in nsecs This is one more step toward converting cputime accounting to pure nsecs. Signed-off-by: Frederic Weisbecker <fweis...@gmail.com> Cc: Benjamin Herrenschmidt <b...@kernel.crashing.org> Cc: Fenghua Yu <fenghua...@intel.com> Cc: Heiko Carstens <heiko.carst...@de.ibm.com> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Martin Schwidefsky <schwidef...@de.ibm.com> Cc: Michael Ellerman <m...@ellerman.id.au> Cc: Paul Mackerras <pau...@samba.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Rik van Riel <r...@redhat.com> Cc: Stanislaw Gruszka <sgrus...@redhat.com> Cc: Thomas Gleixner <t...@linutronix.de> Cc: Tony Luck <tony.l...@intel.com> Cc: Wanpeng Li <wanpeng...@hotmail.com> Link: http://lkml.kernel.org/r/1485832191-26889-24-git-send-email-fweis...@gmail.com Signed-off-by: Ingo Molnar <mi...@kernel.org> --- arch/ia64/kernel/time.c | 2 +- arch/powerpc/kernel/time.c | 2 +- arch/s390/kernel/idle.c | 2 +- include/linux/kernel_stat.h | 2 +- kernel/sched/cputime.c | 18 +++++++++--------- 5 files changed, 13 insertions(+), 13 deletions(-) diff --git a/arch/ia64/kernel/time.c b/arch/ia64/kernel/time.c index ed98b26..5dc801d 100644 --- a/arch/ia64/kernel/time.c +++ b/arch/ia64/kernel/time.c @@ -73,7 +73,7 @@ void vtime_flush(struct task_struct *tsk) account_guest_time(tsk, cycle_to_cputime(ti->gtime)); if (ti->idle_time) - account_idle_time(cycle_to_cputime(ti->idle_time)); + account_idle_time(cputime_to_nsecs(cycle_to_cputime(ti->idle_time))); if (ti->stime) { delta = cycle_to_cputime(ti->stime); diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 53e5982..739897a 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -405,7 +405,7 @@ void vtime_flush(struct task_struct *tsk) account_steal_time(cputime_to_nsecs(acct->steal_time)); if (acct->idle_time) - account_idle_time(acct->idle_time); + account_idle_time(cputime_to_nsecs(acct->idle_time)); if (acct->stime) account_system_index_time(tsk, acct->stime, CPUTIME_SYSTEM); diff --git a/arch/s390/kernel/idle.c b/arch/s390/kernel/idle.c index 7a55c29..99f1d81 100644 --- a/arch/s390/kernel/idle.c +++ b/arch/s390/kernel/idle.c @@ -43,7 +43,7 @@ void enabled_wait(void) idle->clock_idle_enter = idle->clock_idle_exit = 0ULL; idle->idle_time += idle_time; idle->idle_count++; - account_idle_time(idle_time); + account_idle_time(cputime_to_nsecs(idle_time)); write_seqcount_end(&idle->seqcount); } NOKPROBE_SYMBOL(enabled_wait); diff --git a/include/linux/kernel_stat.h b/include/linux/kernel_stat.h index 1d55d10..e1cd897 100644 --- a/include/linux/kernel_stat.h +++ b/include/linux/kernel_stat.h @@ -84,7 +84,7 @@ extern void account_system_time(struct task_struct *, int, cputime_t); extern void account_system_index_time(struct task_struct *, cputime_t, enum cpu_usage_stat); extern void account_steal_time(u64); -extern void account_idle_time(cputime_t); +extern void account_idle_time(u64); #ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE static inline void account_process_tick(struct task_struct *tsk, int user) diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c index 9a80287..fd5375f 100644 --- a/kernel/sched/cputime.c +++ b/kernel/sched/cputime.c @@ -218,15 +218,15 @@ void account_steal_time(u64 cputime) * Account for idle time. * @cputime: the cpu time spent in idle wait */ -void account_idle_time(cputime_t cputime) +void account_idle_time(u64 cputime) { u64 *cpustat = kcpustat_this_cpu->cpustat; struct rq *rq = this_rq(); if (atomic_read(&rq->nr_iowait) > 0) - cpustat[CPUTIME_IOWAIT] += cputime_to_nsecs(cputime); + cpustat[CPUTIME_IOWAIT] += cputime; else - cpustat[CPUTIME_IDLE] += cputime_to_nsecs(cputime); + cpustat[CPUTIME_IDLE] += cputime; } /* @@ -392,7 +392,7 @@ static void irqtime_account_process_tick(struct task_struct *p, int user_tick, } else if (user_tick) { account_user_time(p, cputime); } else if (p == rq->idle) { - account_idle_time(old_cputime); + account_idle_time(cputime); } else if (p->flags & PF_VCPU) { /* System time or guest time */ account_guest_time(p, old_cputime); @@ -504,7 +504,7 @@ void account_process_tick(struct task_struct *p, int user_tick) else if ((p != rq->idle) || (irq_count() != HARDIRQ_OFFSET)) account_system_time(p, HARDIRQ_OFFSET, old_cputime); else - account_idle_time(old_cputime); + account_idle_time(cputime); } /* @@ -513,15 +513,15 @@ void account_process_tick(struct task_struct *p, int user_tick) */ void account_idle_ticks(unsigned long ticks) { - cputime_t cputime, steal; + u64 cputime, steal; if (sched_clock_irqtime) { irqtime_account_idle_ticks(ticks); return; } - cputime = jiffies_to_cputime(ticks); - steal = steal_account_process_time(ULONG_MAX); + cputime = ticks * TICK_NSEC; + steal = cputime_to_nsecs(steal_account_process_time(ULONG_MAX)); if (steal >= cputime) return; @@ -787,7 +787,7 @@ void vtime_account_idle(struct task_struct *tsk) { cputime_t delta_cpu = get_vtime_delta(tsk); - account_idle_time(delta_cpu); + account_idle_time(cputime_to_nsecs(delta_cpu)); } void arch_vtime_task_switch(struct task_struct *prev)
