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| author | Frederic Weisbecker <frederic@kernel.org> | 2019-11-21 03:44:30 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2019-11-21 07:59:00 +0100 |
| commit | 8392853e964c025b0616bd54c0cdf9cbc3c9a769 (patch) | |
| tree | 9730d88138caf16018b9978320acd0d8a041067c /drivers/macintosh | |
| parent | 8688f2fb671b2ed59b1b16083136b6edc3750435 (diff) | |
| download | linux-8392853e964c025b0616bd54c0cdf9cbc3c9a769.tar.gz linux-8392853e964c025b0616bd54c0cdf9cbc3c9a769.tar.bz2 linux-8392853e964c025b0616bd54c0cdf9cbc3c9a769.zip | |
rackmeter: Use vtime aware kcpustat accessor
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: Peter Zijlstra <peterz@infradead.org>
Cc: Wanpeng Li <wanpengli@tencent.com>
Link: https://lkml.kernel.org/r/20191121024430.19938-7-frederic@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/macintosh')
| -rw-r--r-- | drivers/macintosh/rack-meter.c | 7 |
1 files 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; } |