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Subject[PATCH 6/6] rackmeter: Use vtime aware kcpustat accessor
Date
Now that we have a vtime safe kcpustat accessor, use it to fetch
CPUTIME_NICE and fix frozen kcpustat values on nohz_full CPUs.

Reported-by: Yauheni Kaliuta <yauheni.kaliuta@redhat.com>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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/macintosh/rack-meter.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/macintosh/rack-meter.c b/drivers/macintosh/rack-meter.c
index 4134e580f786..60311e8d6240 100644
--- a/drivers/macintosh/rack-meter.c
+++ b/drivers/macintosh/rack-meter.c
@@ -81,13 +81,14 @@ static int rackmeter_ignore_nice;
*/
static inline u64 get_cpu_idle_time(unsigned int cpu)
{
+ struct kernel_cpustat *kcpustat = &kcpustat_cpu(cpu);
u64 retval;

- retval = kcpustat_cpu(cpu).cpustat[CPUTIME_IDLE] +
- kcpustat_cpu(cpu).cpustat[CPUTIME_IOWAIT];
+ retval = kcpustat->cpustat[CPUTIME_IDLE] +
+ kcpustat->cpustat[CPUTIME_IOWAIT];

if (rackmeter_ignore_nice)
- retval += kcpustat_cpu(cpu).cpustat[CPUTIME_NICE];
+ retval += kcpustat_field(kcpustat, CPUTIME_NICE, cpu);

return retval;
}
--
2.23.0
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