| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 083/104] cpufreq: intel_pstate: Update pid_params.sample_rate_ns in pid_param_set() | Date | Fri, 6 Oct 2017 10:52:01 +0200 |
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4.9-stable review patch. If anyone has any objections, please let me know.
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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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/cpufreq/intel_pstate.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -609,6 +609,7 @@ static void intel_pstate_hwp_set_online_ 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; }
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