linux-kernel - [PATCH] cpufreq: Remove references to 10ms min sampling rate

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Date: Thu, 22 Feb 2024 16:34:15 +0100
From: Pierre Gondois <pierre.gondois@....com>
To: linux-kernel@...r.kernel.org
Cc: Qais Yousef <qyousef@...alina.io>,
	Pierre Gondois <pierre.gondois@....com>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	linux-pm@...r.kernel.org
Subject: [PATCH] cpufreq: Remove references to 10ms min sampling rate

A minimum sampling rate value of 10ms was introduced in:
commit cef9615a853e ("[CPUFREQ] ondemand: Uncouple minimal sampling rate from HZ in NO_HZ case")

The use of this value was removed in:
commit ed4676e25463 ("cpufreq: Replace "max_transition_latency" with "dynamic_switching"")

Remove:
- a comment referencing this value
- an unused macro associated to this value

Signed-off-by: Pierre Gondois <pierre.gondois@....com>
---
 drivers/cpufreq/cpufreq_ondemand.c | 1 -
 include/linux/cpufreq.h            | 4 +---
 2 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index c52d19d67557..a7c38b8b3e78 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -22,7 +22,6 @@
 #define DEF_SAMPLING_DOWN_FACTOR		(1)
 #define MAX_SAMPLING_DOWN_FACTOR		(100000)
 #define MICRO_FREQUENCY_UP_THRESHOLD		(95)
-#define MICRO_FREQUENCY_MIN_SAMPLE_RATE		(10000)
 #define MIN_FREQUENCY_UP_THRESHOLD		(1)
 #define MAX_FREQUENCY_UP_THRESHOLD		(100)
 
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 8b9026031a28..625949a1869d 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -568,9 +568,7 @@ static inline unsigned long cpufreq_scale(unsigned long old, u_int div,
 
 /*
  * The polling frequency depends on the capability of the processor. Default
- * polling frequency is 1000 times the transition latency of the processor. The
- * ondemand governor will work on any processor with transition latency <= 10ms,
- * using appropriate sampling rate.
+ * polling frequency is 1000 times the transition latency of the processor.
  */
 #define LATENCY_MULTIPLIER		(1000)
 
-- 
2.25.1