[V3,3/3] cpufreq: governor: Process remote callback for shared policies

Message ID 93a9001437dac267e083f4df55f68bd2e2455d47.1499927699.git.viresh.kumar@linaro.org
State Superseded
Headers show
  • sched: cpufreq: Allow remote callbacks
Related show

Commit Message

Viresh Kumar July 13, 2017, 6:44 a.m.
This patch updates the legacy governors (ondemand/conservative) to
process cpufreq utilization update hooks to be called for remote CPUs.

Proper locking is already in place for shared policies and nothing extra
is required to be done.

Based on initial work from Steve Muckle.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

 drivers/cpufreq/cpufreq_governor.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)



diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c
index 606b1a37a1af..0b49fc8bb91d 100644
--- a/drivers/cpufreq/cpufreq_governor.c
+++ b/drivers/cpufreq/cpufreq_governor.c
@@ -275,8 +275,8 @@  static void dbs_update_util_handler(struct update_util_data *data, u64 time,
 	struct policy_dbs_info *policy_dbs = cdbs->policy_dbs;
 	u64 delta_ns, lst;
-	/* Don't allow remote callbacks */
-	if (smp_processor_id() != data->cpu)
+	/* Allow remote callbacks only on the CPUs sharing cpufreq policy */
+	if (!cpumask_test_cpu(smp_processor_id(), policy_dbs->policy->cpus))