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cpufreq: Add policy create/remove notifiers back
This effectively reverts some changes made by commit f9f41e3ef9
("cpufreq: Remove policy create/remove notifiers").
We have a new use case for policy create/remove notifiers (for
allocating/freeing QoS requests per policy), so add them back.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
[ rjw: Subject & changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
parent
e21a712a96
commit
6a1490367c
2 changed files with 16 additions and 1 deletions
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@ -1266,7 +1266,17 @@ static void cpufreq_policy_free(struct cpufreq_policy *policy)
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DEV_PM_QOS_MAX_FREQUENCY);
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dev_pm_qos_remove_notifier(dev, &policy->nb_min,
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DEV_PM_QOS_MIN_FREQUENCY);
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dev_pm_qos_remove_request(policy->max_freq_req);
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if (policy->max_freq_req) {
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/*
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* CPUFREQ_CREATE_POLICY notification is sent only after
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* successfully adding max_freq_req request.
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*/
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blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
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CPUFREQ_REMOVE_POLICY, policy);
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dev_pm_qos_remove_request(policy->max_freq_req);
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}
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dev_pm_qos_remove_request(policy->min_freq_req);
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kfree(policy->min_freq_req);
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@ -1391,6 +1401,9 @@ static int cpufreq_online(unsigned int cpu)
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ret);
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goto out_destroy_policy;
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}
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blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
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CPUFREQ_CREATE_POLICY, policy);
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}
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if (cpufreq_driver->get && has_target()) {
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@ -458,6 +458,8 @@ static inline void cpufreq_resume(void) {}
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/* Policy Notifiers */
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#define CPUFREQ_ADJUST (0)
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#define CPUFREQ_NOTIFY (1)
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#define CPUFREQ_CREATE_POLICY (2)
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#define CPUFREQ_REMOVE_POLICY (3)
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#ifdef CONFIG_CPU_FREQ
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int cpufreq_register_notifier(struct notifier_block *nb, unsigned int list);
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