cpufreq: intel_pstate: Update pid_params.sample_rate_ns in pid_param_set()

rafaeljw · rafaeljw · commit 6e7408acd04d · 2017-03-13T23:55:12.000+01:00
Fix the debugfs interface for PID tuning to actually update pid_params.sample_rate_ns on PID parameters updates, as changing pid_params.sample_rate_ms via debugfs has no effect now. Fixes: a4675fb (cpufreq: intel_pstate: Replace timers with utilization update callbacks) Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
@@ -989,6 +989,7 @@ static void intel_pstate_update_policies(void)
 static int pid_param_set(void *data, u64 val)
 {
 	*(u32 *)data = val;
+	pid_params.sample_rate_ns = pid_params.sample_rate_ms * NSEC_PER_MSEC;
 	intel_pstate_reset_all_pid();
 	return 0;
 }

Original file line number	Diff line number	Diff line change
`@@ -989,6 +989,7 @@ static void intel_pstate_update_policies(void)`
`989`	`989`	`static int pid_param_set(void *data, u64 val)`
`990`	`990`	`{`
`991`	`991`	`(u32 )data = val;`
	`992`	`+ pid_params.sample_rate_ns = pid_params.sample_rate_ms * NSEC_PER_MSEC;`
`992`	`993`	`intel_pstate_reset_all_pid();`
`993`	`994`	`return 0;`
`994`	`995`	`}`