From: Perry Yuan <Perry.Yuan@amd.com>
To: <rafael.j.wysocki@intel.com>, <viresh.kumar@linaro.org>,
<Ray.Huang@amd.com>, Huang Rui <ray.huang@amd.com>,
"Rafael J. Wysocki" <rafael@kernel.org>,
<linux-pm@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Cc: <Deepak.Sharma@amd.com>, <Mario.Limonciello@amd.com>,
<Nathan.Fontenot@amd.com>, <Alexander.Deucher@amd.com>,
<Jinzhou.Su@amd.com>, <Xinmei.Huang@amd.com>,
<Xiaojian.Du@amd.com>, <Li.Meng@amd.com>,
Perry Yuan <Perry.Yuan@amd.com>
Subject: [PATCH 12/12] cpufreq: amd_pstate: update transition delay time to 1ms
Date: Thu, 7 Jul 2022 13:01:29 -0400 [thread overview]
Message-ID: <20220707170129.217086-1-Perry.Yuan@amd.com> (raw)
Update transition delay time to 1ms, in the AMD CPU autonomous mode and
non-autonomous mode, CPPC firmware will decide frequency at 1ms timescale
based on the workload utilization.
Signed-off-by: Perry Yuan <Perry.Yuan@amd.com>
---
drivers/cpufreq/amd-pstate.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
index 6d81a9a94dde..f16ad0b108e4 100644
--- a/drivers/cpufreq/amd-pstate.c
+++ b/drivers/cpufreq/amd-pstate.c
@@ -42,7 +42,7 @@
#include "amd-pstate-trace.h"
#define AMD_PSTATE_TRANSITION_LATENCY 20000
-#define AMD_PSTATE_TRANSITION_DELAY 500
+#define AMD_PSTATE_TRANSITION_DELAY 1000
/*
* TODO: We need more time to fine tune processors with shared memory solution
--
2.25.1
reply other threads:[~2022-07-07 17:01 UTC|newest]
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