commit 6e7408acd04d06c04981c0c0fb5a2462b16fae4f
author Rafael J. Wysocki <rafael.j.wysocki@intel.com> Sun Mar 12 18:12:56 2017 +0100
committer Rafael J. Wysocki <rafael.j.wysocki@intel.com> Mon Mar 13 23:55:12 2017 +0100
tree 5037e20b3166876d9a9705fe6e3625cf9bac6293
parent 4495c08e84729385774601b5146d51d9e5849f81

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

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: a4675fbc4a7a (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>

drivers/cpufreq/intel_pstate.c

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 3d37219..f9fe910 100644
--- 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;
 }