linux-kernel - [PATCH V2 10/10] Documentation: cpufreq: Update policy notifier documentation

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Message-Id: <c90b601734b9828aeb93b8317205aff791660a2d.1563862014.git.viresh.kumar@linaro.org>
Date:   Tue, 23 Jul 2019 11:44:10 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Rafael Wysocki <rjw@...ysocki.net>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Jonathan Corbet <corbet@....net>
Cc:     linux-pm@...r.kernel.org,
        Vincent Guittot <vincent.guittot@...aro.org>,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH V2 10/10] Documentation: cpufreq: Update policy notifier documentation

Update documentation with the recent policy notifier updates.

Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
---
 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
-- 
2.21.0.rc0.269.g1a574e7a288b