Commit 950c6451 authored Sep 26, 2025 by Rafael J. Wysocki

cpufreq: Drop unused symbol CPUFREQ_ETERNAL



Drop CPUFREQ_ETERNAL that has no users any more along with all
references to it in the documentation.

No functional impact.

Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Reviewed-by: Jie Zhan <zhanjie9@hisilicon.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Qais Yousef <qyousef@layalina.io>

parent c28a280b

Documentation/admin-guide/pm/cpufreq.rst

+0 −4

Original line number	Diff line number	Diff line
		@@ -274,10 +274,6 @@ are the following:
		The time it takes to switch the CPUs belonging to this policy from one
		P-state to another, in nanoseconds.

		If unknown or if known to be so high that the scaling driver does not
		work with the `ondemand`_ governor, -1 (:c:macro:`CPUFREQ_ETERNAL`)
		will be returned by reads from this attribute.

		``related_cpus``
		List of all (online and offline) CPUs belonging to this policy.

Documentation/cpu-freq/cpu-drivers.rst

+1 −2

Original line number	Diff line number	Diff line
		@@ -109,8 +109,7 @@ Then, the driver must fill in the following values:
		+-----------------------------------+--------------------------------------+
		\|policy->cpuinfo.transition_latency \| the time it takes on this CPU to \|
		\| \| switch between two frequencies in \|
		\| \| nanoseconds (if appropriate, else \|
		\| \| specify CPUFREQ_ETERNAL) \|
		\| \| nanoseconds \|
		+-----------------------------------+--------------------------------------+
		\|policy->cur \| The current operating frequency of \|
		\| \| this CPU (if appropriate) \|

Documentation/translations/zh_CN/cpu-freq/cpu-drivers.rst

+1 −2

Original line number	Diff line number	Diff line
		@@ -112,8 +112,7 @@ CPUfreq核心层注册一个cpufreq_driver结构体。
		\| \| \|
		+-----------------------------------+--------------------------------------+
		\|policy->cpuinfo.transition_latency \| CPU在两个频率之间切换所需的时间，以 \|
		\| \| 纳秒为单位（如不适用，设定为 \|
		\| \| CPUFREQ_ETERNAL） \|
		\| \| 纳秒为单位 \|
		\| \| \|
		+-----------------------------------+--------------------------------------+
		\|policy->cur \| 该CPU当前的工作频率(如适用) \|

Documentation/translations/zh_TW/cpu-freq/cpu-drivers.rst

+1 −2

Original line number	Diff line number	Diff line
		@@ -112,8 +112,7 @@ CPUfreq核心層註冊一個cpufreq_driver結構體。
		\| \| \|
		+-----------------------------------+--------------------------------------+
		\|policy->cpuinfo.transition_latency \| CPU在兩個頻率之間切換所需的時間，以 \|
		\| \| 納秒爲單位（如不適用，設定爲 \|
		\| \| CPUFREQ_ETERNAL） \|
		\| \| 納秒爲單位 \|
		\| \| \|
		+-----------------------------------+--------------------------------------+
		\|policy->cur \| 該CPU當前的工作頻率(如適用) \|

include/linux/cpufreq.h

+0 −5

Original line number	Diff line number	Diff line
		@@ -26,13 +26,8 @@
		*********************************************************************/
		/*
		* Frequency values here are CPU kHz
		*
		* Maximum transition latency is in nanoseconds - if it's unknown,
		* CPUFREQ_ETERNAL shall be used.
		*/

		#define CPUFREQ_ETERNAL (-1)

		#define CPUFREQ_DEFAULT_TRANSITION_LATENCY_NS NSEC_PER_MSEC

		#define CPUFREQ_NAME_LEN 16