From 26eb48a9faf241abd60aa546e6beb896011667c1 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Tue, 4 Apr 2017 07:54:13 +1000 Subject: [PATCH] cpuidle: powernv: Don't continually set thread priority in snooze_loop() The powerpc64 kernel exception handlers have preserved thread priorities for a long time now, so there is no need to continually set it. Just set it once on entry and once exit. Signed-off-by: Anton Blanchard Reviewed-by: Vaidyanathan Srinivasan Signed-off-by: Rafael J. Wysocki --- drivers/cpuidle/cpuidle-powernv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/cpuidle/cpuidle-powernv.c b/drivers/cpuidle/cpuidle-powernv.c index 0ddf1a5bb0a9..f8901671fff4 100644 --- a/drivers/cpuidle/cpuidle-powernv.c +++ b/drivers/cpuidle/cpuidle-powernv.c @@ -56,8 +56,8 @@ static int snooze_loop(struct cpuidle_device *dev, snooze_exit_time = get_tb() + snooze_timeout; ppc64_runlatch_off(); + HMT_very_low(); while (!need_resched()) { - HMT_very_low(); if (snooze_timeout_en && get_tb() > snooze_exit_time) break; } -- 2.39.5