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Message-ID: <9533136.CDJkKcVGEf@rafael.j.wysocki> Date: Thu, 25 Sep 2025 17:47:27 +0200 From: "Rafael J. Wysocki" <rafael@...nel.org> To: Linux PM <linux-pm@...r.kernel.org> Cc: Shawn Guo <shawnguo@...nel.org>, Qais Yousef <qyousef@...alina.io>, LKML <linux-kernel@...r.kernel.org>, Viresh Kumar <viresh.kumar@...aro.org>, Prashanth Prakash <pprakash@...eaurora.org>, Pierre Gondois <pierre.gondois@....com>, Mario Limonciello <mario.limonciello@....com>, Linux ACPI <linux-acpi@...r.kernel.org> Subject: [PATCH v1 4/4] cpufreq: Drop unused symbol CPUFREQ_ETERNAL From: Rafael J. Wysocki <rafael.j.wysocki@...el.com> Drop CPUFREQ_ETERNAL that has no users any more along with all references to it in the documentation. No functional impact. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com> --- Documentation/admin-guide/pm/cpufreq.rst | 4 ---- Documentation/cpu-freq/cpu-drivers.rst | 3 +-- Documentation/translations/zh_CN/cpu-freq/cpu-drivers.rst | 3 +-- Documentation/translations/zh_TW/cpu-freq/cpu-drivers.rst | 3 +-- include/linux/cpufreq.h | 5 ----- 5 files changed, 3 insertions(+), 15 deletions(-) --- a/Documentation/admin-guide/pm/cpufreq.rst +++ b/Documentation/admin-guide/pm/cpufreq.rst @@ -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. --- a/Documentation/cpu-freq/cpu-drivers.rst +++ b/Documentation/cpu-freq/cpu-drivers.rst @@ -109,8 +109,7 @@ Then, the driver must fill in the follow +-----------------------------------+--------------------------------------+ |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) | --- a/Documentation/translations/zh_CN/cpu-freq/cpu-drivers.rst +++ b/Documentation/translations/zh_CN/cpu-freq/cpu-drivers.rst @@ -112,8 +112,7 @@ CPUfreq核心层注册一个cpufreq_driv | | | +-----------------------------------+--------------------------------------+ |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) | --- a/Documentation/translations/zh_TW/cpu-freq/cpu-drivers.rst +++ b/Documentation/translations/zh_TW/cpu-freq/cpu-drivers.rst @@ -112,8 +112,7 @@ CPUfreq核心層註冊一個cpufreq_driv | | | +-----------------------------------+--------------------------------------+ |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) | --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -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_TANSITION_LATENCY_NS NSEC_PER_MSEC #define CPUFREQ_NAME_LEN 16
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