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cpuidle: powernv: Don't continually set thread priority in snooze_loop()

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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 <[email protected]>
Reviewed-by: Vaidyanathan Srinivasan <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
This commit is contained in:
Anton Blanchard 2017-04-04 07:54:13 +10:00 • committed by Rafael J. Wysocki
commit 26eb48a9fa
1 changed files with 1 additions and 1 deletions
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2
drivers/cpuidle/cpuidle-powernv.c
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@ -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;
}