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Subject[PATCH for 4.9 26/39] cpufreq: intel_pstate: Update pid_params.sample_rate_ns in pid_param_set()
Date
From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>

[ Upstream commit 6e7408acd04d06c04981c0c0fb5a2462b16fae4f ]

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>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
---
drivers/cpufreq/intel_pstate.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 80fa656da5ab..a59ae8e24d3d 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -609,6 +609,7 @@ static void intel_pstate_hwp_set_online_cpus(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;
}
--
2.11.0
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