From c27c38afd871f54b40bd40172cb4e23fba01113c Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Tue, 23 Jul 2019 11:44:10 +0530 Subject: [PATCH] Documentation: cpufreq: Update policy notifier documentation Update documentation with the recent policy notifier updates. Signed-off-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- Documentation/cpu-freq/core.txt | 16 ++++------------ 1 file changed, 4 insertions(+), 12 deletions(-) diff --git a/Documentation/cpu-freq/core.txt b/Documentation/cpu-freq/core.txt index 55193e680250..ed577d9c154b 100644 --- a/Documentation/cpu-freq/core.txt +++ b/Documentation/cpu-freq/core.txt @@ -57,19 +57,11 @@ transition notifiers. 2.1 CPUFreq policy notifiers ---------------------------- -These are notified when a new policy is intended to be set. Each -CPUFreq policy notifier is called twice for a policy transition: +These are notified when a new policy is created or removed. -1.) During CPUFREQ_ADJUST all CPUFreq notifiers may change the limit if - they see a need for this - may it be thermal considerations or - hardware limitations. - -2.) And during CPUFREQ_NOTIFY all notifiers are informed of the new policy - - if two hardware drivers failed to agree on a new policy before this - stage, the incompatible hardware shall be shut down, and the user - informed of this. - -The phase is specified in the second argument to the notifier. +The phase is specified in the second argument to the notifier. The phase is +CPUFREQ_CREATE_POLICY when the policy is first created and it is +CPUFREQ_REMOVE_POLICY when the policy is removed. The third argument, a void *pointer, points to a struct cpufreq_policy consisting of several values, including min, max (the lower and upper -- 2.30.2