redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

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 <anton@samba.org>
Reviewed-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
hifive-unleashed-5.1
Anton Blanchard 2017-04-04 07:54:13 +10:00 committed by Rafael J. Wysocki
parent 79b578111f
commit 26eb48a9fa
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/cpuidle/cpuidle-powernv.c
View File

@ -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;
}