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author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-01-16 00:56:34 +0100 |
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committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-01-19 15:28:23 +0100 |
commit | 5bb1729cbdfbe974ad6385be94b14afbac97e19f (patch) | |
tree | 6a594c2ef4f971024f5b536c526f905a9d868f1a /kernel/time | |
parent | 51164251f5c35e6596130ef0de94ffe65fe441e0 (diff) | |
download | op-kernel-dev-5bb1729cbdfbe974ad6385be94b14afbac97e19f.zip op-kernel-dev-5bb1729cbdfbe974ad6385be94b14afbac97e19f.tar.gz |
cpuidle: menu: Avoid pointless checks in menu_select()
If menu_select() cannot find a suitable state to return, it will
return the state index stored in data->last_state_idx. This
means that it is pointless to look at the states whose indices
are less than or equal to data->last_state_idx in the main loop,
so don't do that.
Given that those checks are done on every idle state selection, this
change can save quite a bit of completely unnecessary overhead.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Sudeep Holla <sudeep.holla@arm.com>
Diffstat (limited to 'kernel/time')
0 files changed, 0 insertions, 0 deletions