Documentation/cpu-freq/core.rst

1 .. SPDX-License-Identifier: GPL-2.0
8 	- Dominik Brodowski  <linux@brodo.de>
9 	- David Kimdon <dwhedon@debian.org>
10 	- Rafael J. Wysocki <rafael.j.wysocki@intel.com>
11 	- Viresh Kumar <viresh.kumar@linaro.org>
26 drivers or other part of the kernel that need to be informed of
27 policy changes (ex. thermal modules like ACPI) or of all
30 kernel "constant" loops_per_jiffy is updated on frequency changes
37 policy doesn't get freed while being used.
42 CPUFreq notifiers conform to the standard kernel notifier interface.
45 There are two different CPUFreq notifiers - policy notifiers and
49 2.1 CPUFreq policy notifiers
50 ----------------------------
52 These are notified when a new policy is created or removed.
55 CPUFREQ_CREATE_POLICY when the policy is first created and it is
56 CPUFREQ_REMOVE_POLICY when the policy is removed.
60 frequencies (in kHz) of the new policy).
64 --------------------------------
66 These are notified twice for each online CPU in the policy, when the
70 The second argument specifies the phase - CPUFREQ_PRECHANGE or
77 policy	a pointer to the struct cpufreq_policy
87 dev_pm_opp_init_cpufreq_table -
103 			policy->freq_table = freq_table;