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authorAnton Blanchard <anton@samba.org>2017-04-04 07:54:13 +1000
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-04-19 23:17:18 +0200
commit26eb48a9faf241abd60aa546e6beb896011667c1 (patch)
treebd271ab049d8cbd2d20b8a8d443c40610cf194c9 /drivers/cpuidle
parent79b578111febef642143669254b243ffbcf64ea9 (diff)
downloadlinux-26eb48a9faf241abd60aa546e6beb896011667c1.tar.bz2
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>
Diffstat (limited to 'drivers/cpuidle')
-rw-r--r--drivers/cpuidle/cpuidle-powernv.c2
1 files changed, 1 insertions, 1 deletions
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;
}