This is a note to let you know that I've just added the patch titled
cpufreq: intel_pstate: Update pid_params.sample_rate_ns in pid_param_set()
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
cpufreq-intel_pstate-update-pid_params.sample_rate_ns-in-pid_param_set.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Thu Oct 5 10:28:31 CEST 2017
From: "Rafael J. Wysocki" <rafael.j.wysocki@xxxxxxxxx>
Date: Sun, 12 Mar 2017 18:12:56 +0100
Subject: cpufreq: intel_pstate: Update pid_params.sample_rate_ns in pid_param_set()
From: "Rafael J. Wysocki" <rafael.j.wysocki@xxxxxxxxx>
[ 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@xxxxxxxxx>
Acked-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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;
}
Patches currently in stable-queue which might be from rafael.j.wysocki@xxxxxxxxx are
queue-4.9/cpufreq-intel_pstate-update-pid_params.sample_rate_ns-in-pid_param_set.patch