cpuidle/menu: stop seeking deeper idle if current state is deep enough
authorAlex Shi <alex.shi@linaro.org>
Thu, 12 Jan 2017 13:27:02 +0000 (21:27 +0800)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Mon, 30 Jan 2017 09:56:00 +0000 (10:56 +0100)
commit8e37e1a2a3295f5d99e6dbe99eca24eca7a034ef
tree438adb2db9f79ec2752cc045b97414b1be87a505
parent2dc8ffad8c53e65f85d1a9ece2721463d729054a
cpuidle/menu: stop seeking deeper idle if current state is deep enough

Obsolete commit 71abbbf856a0 (cpuidle: extend cpuidle and menu governor
to handle dynamic states) wanted to introduce dynamic C-states, but that
idea was dropped long ago.  The nonsense deeper C-state checking
remained, though.

Since both target_residency and exit_latency are longer for deeper
idle state, there's no need to waste CPU time on useless checks.

Signed-off-by: Alex Shi <alex.shi@linaro.org>
Acked-by: Rik van Riel <riel@redhat.com>
[ rjw: Subject & changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
drivers/cpuidle/governors/menu.c