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Commit 9aa44be6 authored by Junjie Wu's avatar Junjie Wu
Browse files

cpufreq: interactive: Reset last evaluated jiffy in idle callback 



When CPU has been busy for a long time, last evaluated jiffy will be
quite behind because the timer would have been canceled. We don't want
to schedule a timer to fire in the past as load will always be 100%.

Reset last evaluated jiffy so that timer will be scheduled for the
next window.

Change-Id: Ie25e65eab1f16acdeda267987ca605d653f1f32a
Signed-off-by: default avatarJunjie Wu <junjiew@codeaurora.org>
parent 54952983

drivers/cpufreq/cpufreq_interactive.c

+3 −1
Original line number Original line Diff line number Diff line
@@ -502,9 +502,11 @@ static void cpufreq_interactive_idle_start(void) 
		 * min indefinitely.  This should probably be a quirk of

		 * min indefinitely.  This should probably be a quirk of

		 * the CPUFreq driver.

		 * the CPUFreq driver.

		 */

		 */

		if (!pending)

		if (!pending) {

			pcpu->last_evaluated_jiffy = get_jiffies_64();

			cpufreq_interactive_timer_resched(pcpu);

			cpufreq_interactive_timer_resched(pcpu);

		}

		}

	}





	up_read(&pcpu->enable_sem);

	up_read(&pcpu->enable_sem);

}

}