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author | Anton Blanchard <anton@samba.org> | 2017-04-04 07:54:14 +1000 |
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committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-04-19 23:17:19 +0200 |
commit | 0baa91cb73e296242edad89cfe3f60c59ab8a95a (patch) | |
tree | 9e5250def7c919e0a8ad2763d7707a3dfc42bd7d /drivers/cpuidle/cpuidle.c | |
parent | 26eb48a9faf241abd60aa546e6beb896011667c1 (diff) | |
download | linux-stable-0baa91cb73e296242edad89cfe3f60c59ab8a95a.tar.gz linux-stable-0baa91cb73e296242edad89cfe3f60c59ab8a95a.tar.bz2 linux-stable-0baa91cb73e296242edad89cfe3f60c59ab8a95a.zip |
cpuidle: powernv: Avoid a branch in the core snooze_loop() loop
When in the snooze_loop() we want to take up the least amount of
resources. On my version of gcc (6.3), we end up with an extra
branch because it predicts snooze_timeout_en to be false, whereas it
is almost always true.
Use likely() to avoid the branch and be a little nicer to the
other non idle threads on the core.
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/cpuidle.c')
0 files changed, 0 insertions, 0 deletions