diff options
| author | Qais Yousef <[email protected]> | 2019-08-02 11:46:28 +0100 |
|---|---|---|
| committer | Peter Zijlstra <[email protected]> | 2019-08-08 09:09:31 +0200 |
| commit | 5c3ceef9ad7b340b0acee6c26d0c9e6429decb2c (patch) | |
| tree | 7e6550de9798a92f0be91e200d6746c379caea8d | |
| parent | 67692435c411e5c53a1c588ecca2037aebd81f2e (diff) | |
cpufreq: schedutil: fix equation in comment
scale_irq_capacity() call in schedutil_cpu_util() does
util *= (max - irq)
util /= max
But the comment says
util *= (1 - irq)
util /= max
Fix the comment to match what the scaling function does.
Signed-off-by: Qais Yousef <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Acked-by: Viresh Kumar <[email protected]>
Acked-by: Vincent Guittot <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: "Rafael J . Wysocki" <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
| -rw-r--r-- | kernel/sched/cpufreq_schedutil.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/sched/cpufreq_schedutil.c b/kernel/sched/cpufreq_schedutil.c index 636ca6f88c8e..e127d89d5974 100644 --- a/kernel/sched/cpufreq_schedutil.c +++ b/kernel/sched/cpufreq_schedutil.c @@ -259,9 +259,9 @@ unsigned long schedutil_cpu_util(int cpu, unsigned long util_cfs, * irq metric. Because IRQ/steal time is hidden from the task clock we * need to scale the task numbers: * - * 1 - irq - * U' = irq + ------- * U - * max + * max - irq + * U' = irq + --------- * U + * max */ util = scale_irq_capacity(util, irq, max); util += irq; |