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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-01-15 23:56:34 (GMT)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-01-19 14:28:23 (GMT)
commit5bb1729cbdfbe974ad6385be94b14afbac97e19f (patch)
tree6a594c2ef4f971024f5b536c526f905a9d868f1a /kernel/sched
parent51164251f5c35e6596130ef0de94ffe65fe441e0 (diff)
downloadlinux-5bb1729cbdfbe974ad6385be94b14afbac97e19f.tar.xz
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/sched')
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