Commit 9fff4080 authored Mar 02, 2018 by Pavankumar Kondeti

sched/fair: Don't consider isolated CPUs in find_best_target()



Check if a CPU is isolated or not before considering it as a
candidate CPU in find_best_target(). Another non isolated CPU
is selected for user space tasks later but kernel threads
wake up isolated CPUs unnecessarily.

Change-Id: I6f888e66716d68bbadc68938121705ada32a904c
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>

parent 1d82b5e3

kernel/sched/fair.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -7006,7 +7006,7 @@ static inline int find_best_target(struct task_struct p, int backup_cpu,
		unsigned long capacity_orig = capacity_orig_of(i);
		unsigned long wake_util, new_util, new_util_cuml;

		if (!cpu_online(i))
		if (!cpu_online(i) \|\| cpu_isolated(i))
		continue;

		/*