diff options
| author | Srivatsa Vaddagiri <vatsa@codeaurora.org> | 2014-07-30 01:24:34 -0700 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-23 20:00:14 -0700 |
| commit | c097c9b57493fd868d9b4f92b6d55d15a25adb84 (patch) | |
| tree | 76d6a43b2bd7786409ec7e57c636b0560556fd88 /kernel/sched/cputime.c | |
| parent | c20a41478d61ea718ecc062baf04cfcfae427b0e (diff) | |
sched: window-stats: Account interrupt handling time as busy time
Account cycles spent by idle cpu handling interrupts (irq or softirq)
towards its busy time.
Change-Id: I84cc084ced67502e1cfa7037594f29ed2305b2b1
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
[joonwoop@codeaurora.org: fixed minor conflict in core.c]
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
Diffstat (limited to 'kernel/sched/cputime.c')
| -rw-r--r-- | kernel/sched/cputime.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c index 05de80b48586..ec3e99076941 100644 --- a/kernel/sched/cputime.c +++ b/kernel/sched/cputime.c @@ -49,6 +49,7 @@ void irqtime_account_irq(struct task_struct *curr) unsigned long flags; s64 delta; int cpu; + u64 wallclock; if (!sched_clock_irqtime) return; @@ -56,7 +57,8 @@ void irqtime_account_irq(struct task_struct *curr) local_irq_save(flags); cpu = smp_processor_id(); - delta = sched_clock_cpu(cpu) - __this_cpu_read(irq_start_time); + wallclock = sched_clock_cpu(cpu); + delta = wallclock - __this_cpu_read(irq_start_time); __this_cpu_add(irq_start_time, delta); irq_time_write_begin(); @@ -66,10 +68,14 @@ void irqtime_account_irq(struct task_struct *curr) * in that case, so as not to confuse scheduler with a special task * that do not consume any time, but still wants to run. */ - if (hardirq_count()) + if (hardirq_count()) { __this_cpu_add(cpu_hardirq_time, delta); - else if (in_serving_softirq() && curr != this_cpu_ksoftirqd()) + sched_account_irqtime(cpu, curr, delta, wallclock); + } else if (in_serving_softirq() && curr != this_cpu_ksoftirqd()) { __this_cpu_add(cpu_softirq_time, delta); + sched_account_irqtime(cpu, curr, delta, wallclock); + } + irq_time_write_end(); local_irq_restore(flags); |