[PATCH for 4.9 26/39] cpufreq: intel_pstate: Update pid_params.sample_rate_ns in pid_param_set()

From	"Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com>
Newsgroups	linux.kernel
Subject	[PATCH for 4.9 26/39] cpufreq: intel_pstate: Update pid_params.sample_rate_ns in pid_param_set()
Date	2017-09-18 02:50 +0200
Message-ID	<uqSq5-72l-1@gated-at.bofh.it> (permalink)
References	<uqSq5-72l-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

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

Back to linux.kernel | Previous | Next | Find similar | Unroll thread

Thread

[PATCH for 4.9 26/39] cpufreq: intel_pstate: Update  pid_params.sample_rate_ns in pid_param_set() "Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com> - 2017-09-18 02:50 +0200

csiph-web