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authorFrederic Weisbecker <fweisbec@gmail.com>2017-01-31 06:09:39 +0300
committerIngo Molnar <mingo@kernel.org>2017-02-01 11:13:57 +0300
commit18b43a9bd7ae91185e398dd983fb4fffb9e81b3a (patch)
tree6b7b4afb75cb9b6fe0d42ca61fe460ab5ed82e27 /kernel/sched/cputime.c
parentbe9095ed4fb3cf69e9fdf64e28ff6b5bd0ec7215 (diff)
downloadlinux-18b43a9bd7ae91185e398dd983fb4fffb9e81b3a.tar.xz
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 <fweisbec@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Stanislaw Gruszka <sgruszka@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Wanpeng Li <wanpeng.li@hotmail.com> Link: http://lkml.kernel.org/r/1485832191-26889-24-git-send-email-fweisbec@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched/cputime.c')
-rw-r--r--kernel/sched/cputime.c18
1 files changed, 9 insertions, 9 deletions
diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c
index 9a8028760930..fd5375f956fe 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)