Commit 03eb3f1f authored Aug 14, 2014 by Junjie Wu

cpufreq: interactive_pro: 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: I4c3838f36bf4d1e4cebce29a26b45611b416d929
Signed-off-by: Junjie Wu <junjiew@codeaurora.org>

parent 0c0e0da6

drivers/cpufreq/cpufreq_interactive_pro.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -555,9 +555,11 @@ static void cpufreq_interactive_idle_start(void)
		* min indefinitely. This should probably be a quirk of
		* the CPUFreq driver.
		*/
		if (!pending)
		if (!pending) {
		pcpu->last_evaluated_jiffy = get_jiffies_64();
		cpufreq_interactive_timer_resched(smp_processor_id());
		}
		}

		up_read(&pcpu->enable_sem);
		}