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Commit 2dd0e605 authored by Rohit Gupta's avatar Rohit Gupta
Browse files

cpufreq: Add a sync limit to cpu-boost 



Perform frequency synchronization only when source CPU's frequency
is less than sync_threshold, else sync to the sync_threshold.

Change-Id: I544c414568d4e015b80ce5891dd215275bac95da
Signed-off-by: default avatarRohit Gupta <rohgup@codeaurora.org>
parent 59cf2db6

drivers/cpufreq/cpu-boost.c

+10 −1
Original line number Diff line number Diff line
@@ -39,6 +39,8 @@ static struct workqueue_struct *boost_rem_wq; 
static unsigned int boost_ms;

module_param(boost_ms, uint, 0644);



static unsigned int sync_threshold;

module_param(sync_threshold, uint, 0644);

/*

 * The CPUFREQ_ADJUST notifier is used to override the current policy min to

 * make sure policy min >= boost_min. The cpufreq framework then does the job
@@ -120,8 +122,15 @@ static int boost_mig_sync_thread(void *data) 
			continue;

		}



		if (sync_threshold && (dest_policy.cur >= sync_threshold))

			continue;



		cancel_delayed_work_sync(&s->boost_rem);

		if (sync_threshold)

			s->boost_min = min(sync_threshold, src_policy.cur);

		else

			s->boost_min = src_policy.cur;



		/* Force policy re-evaluation to trigger adjust notifier. */

		cpufreq_update_policy(dest_cpu);

		queue_delayed_work_on(s->cpu, boost_rem_wq,