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Subject[PATCH 5/6] leds: Use all-in-one vtime aware kcpustat accessor
Date
We can now safely read user kcpustat fields on nohz_full CPUs.
Use the appropriate accessor.

Reported-by: Yauheni Kaliuta <yauheni.kaliuta@redhat.com>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Cc: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Yauheni Kaliuta <yauheni.kaliuta@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Rik van Riel <riel@surriel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wanpeng Li <wanpengli@tencent.com>
Cc: Ingo Molnar <mingo@kernel.org>
---
drivers/leds/trigger/ledtrig-activity.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/drivers/leds/trigger/ledtrig-activity.c b/drivers/leds/trigger/ledtrig-activity.c
index ddfc5edd07c8..6901e3631c22 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_fetch_cpu(&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++;
}

--
2.23.0
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