From 5c3ceef9ad7b340b0acee6c26d0c9e6429decb2c Mon Sep 17 00:00:00 2001 From: Qais Yousef Date: Fri, 2 Aug 2019 11:46:28 +0100 Subject: 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 Signed-off-by: Peter Zijlstra (Intel) Acked-by: Viresh Kumar Acked-by: Vincent Guittot Cc: Ingo Molnar Cc: "Rafael J . Wysocki" Link: https://lkml.kernel.org/r/20190802104628.8410-1-qais.yousef@arm.com --- kernel/sched/cpufreq_schedutil.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'kernel/sched/cpufreq_schedutil.c') 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; -- cgit v1.2.3-59-g8ed1b