| commit | d73d68dc49e09143e8e3bef10670a021c26ec4a5 | |
| author | Youquan Song <youquan.song@intel.com> | |
| Fri, 26 Oct 2012 10:26:59 +0000 (26 12:26 +0200) | ||
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | |
| Wed, 14 Nov 2012 23:34:20 +0000 (15 00:34 +0100) | ||
| tree | 1efde05ffcfcbe38ac3cb6900c8f01b70d0ec066 | treesnapshot (tar.gz zip) |
| parent | e11538d1f03914eb92af5a1a378375c05ae8520c | commitdiff |
cpuidle: Set residency to 0 if target Cstate not enter
When cpuidle governor choose a C-state to enter for idle CPU, but it notice that
there is tasks request to be executed. So the idle CPU will not really enter
the target C-state and go to run task.
In this situation, it will use the residency of previous really entered target
C-states. Obviously, it is not reasonable.
So, this patch fix it by set the target C-state residency to 0.
Signed-off-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Youquan Song <youquan.song@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
When cpuidle governor choose a C-state to enter for idle CPU, but it notice that
there is tasks request to be executed. So the idle CPU will not really enter
the target C-state and go to run task.
In this situation, it will use the residency of previous really entered target
C-states. Obviously, it is not reasonable.
So, this patch fix it by set the target C-state residency to 0.
Signed-off-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Youquan Song <youquan.song@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| drivers/cpuidle/cpuidle.c | diffblobblamehistory |