Commit 2d5582ac authored Mar 12, 2014 by Patrick Cain Committed by Rohit Gupta Mar 18, 2014

cpufreq: cpu-boost: Re-issue boosts above minimum frequency



Frequency boosts where the source CPU frequency is greater than CPU's
minimum frequency should always go through regardless of the destination
CPU's current frequency. This fixes a performance issue where the governor
lowers the CPU frequency shortly after a thread is migrated to it because
the boost wasn't re-issued.

Change-Id: I449545a688d84b0a6e834f5a51dcb499caa84d29
Signed-off-by: Patrick Cain <pcain@codeaurora.org>

parent 47d53bf2

drivers/cpufreq/cpu-boost.c

+2 −6

Original line number	Diff line number	Diff line
		@@ -159,16 +159,12 @@ static int boost_mig_sync_thread(void *data)
		if (ret)
		continue;

		if (dest_policy.cur >= src_policy.cur) {
		pr_debug("No sync. CPU%d@%dKHz >= CPU%d@%dKHz\n",
		dest_cpu, dest_policy.cur,
		if (src_policy.cur == src_policy.cpuinfo.min_freq) {
		pr_debug("No sync. Source CPU%d@%dKHz at min freq\n",
		src_cpu, src_policy.cur);
		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);