diff options
| author | Frederic Weisbecker <frederic@kernel.org> | 2019-11-21 03:44:29 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2019-11-21 07:58:48 +0100 |
| commit | 8688f2fb671b2ed59b1b16083136b6edc3750435 (patch) | |
| tree | ccf0080a0e1503c14fa85790ce0bb614dbeac59f /drivers | |
| parent | 5720821ba1d845f0b91a9278137e9005c5f6931d (diff) | |
| download | linux-8688f2fb671b2ed59b1b16083136b6edc3750435.tar.bz2 | |
leds: Use all-in-one vtime aware kcpustat accessor
We can now safely read user kcpustat fields on nohz_full CPUs.
Use the appropriate accessor.
[ mingo: Fixed build failure. ]
Reported-by: Yauheni Kaliuta <yauheni.kaliuta@redhat.com>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Cc: Jacek Anaszewski <jacek.anaszewski@gmail.com> (maintainer:LED SUBSYSTEM)
Cc: Pavel Machek <pavel@ucw.cz> (maintainer:LED SUBSYSTEM)
Cc: Dan Murphy <dmurphy@ti.com> (reviewer:LED SUBSYSTEM)
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wanpeng Li <wanpengli@tencent.com>
Link: https://lkml.kernel.org/r/20191121024430.19938-6-frederic@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/leds/trigger/ledtrig-activity.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/leds/trigger/ledtrig-activity.c b/drivers/leds/trigger/ledtrig-activity.c index ddfc5edd07c8..14ba7faaed9e 100644 --- a/drivers/leds/trigger/ledtrig-activity.c +++ b/drivers/leds/trigger/ledtrig-activity.c @@ -57,11 +57,15 @@ static void led_activity_function(struct timer_list *t) curr_used = 0; for_each_possible_cpu(i) { - curr_used += kcpustat_cpu(i).cpustat[CPUTIME_USER] - + kcpustat_cpu(i).cpustat[CPUTIME_NICE] - + kcpustat_field(&kcpustat_cpu(i), CPUTIME_SYSTEM, i) - + kcpustat_cpu(i).cpustat[CPUTIME_SOFTIRQ] - + kcpustat_cpu(i).cpustat[CPUTIME_IRQ]; + struct kernel_cpustat kcpustat; + + kcpustat_cpu_fetch(&kcpustat, i); + + curr_used += kcpustat.cpustat[CPUTIME_USER] + + kcpustat.cpustat[CPUTIME_NICE] + + kcpustat.cpustat[CPUTIME_SYSTEM] + + kcpustat.cpustat[CPUTIME_SOFTIRQ] + + kcpustat.cpustat[CPUTIME_IRQ]; cpus++; } |