cpufreq: Remove CPUFREQ_ADJUST and CPUFREQ_NOTIFY policy notifier events (df0eea44) · Commits · 戴 / test

drivers/cpufreq/cpufreq.c

+7 −29

Original line number	Diff line number	Diff line
		@@ -2360,15 +2360,13 @@ EXPORT_SYMBOL(cpufreq_get_policy);
		* @policy: Policy object to modify.
		* @new_policy: New policy data.
		*
		* Pass @new_policy to the cpufreq driver's ->verify() callback, run the
		* installed policy notifiers for it with the CPUFREQ_ADJUST value, pass it to
		* the driver's ->verify() callback again and run the notifiers for it again
		* with the CPUFREQ_NOTIFY value. Next, copy the min and max parameters
		* of @new_policy to @policy and either invoke the driver's ->setpolicy()
		* callback (if present) or carry out a governor update for @policy. That is,
		* run the current governor's ->limits() callback (if the governor field in
		* @new_policy points to the same object as the one in @policy) or replace the
		* governor for @policy with the new one stored in @new_policy.
		* Pass @new_policy to the cpufreq driver's ->verify() callback. Next, copy the
		* min and max parameters of @new_policy to @policy and either invoke the
		* driver's ->setpolicy() callback (if present) or carry out a governor update
		* for @policy. That is, run the current governor's ->limits() callback (if the
		* governor field in @new_policy points to the same object as the one in
		* @policy) or replace the governor for @policy with the new one stored in
		* @new_policy.
		*
		* The cpuinfo part of @policy is not updated by this function.
		*/
		@@ -2396,26 +2394,6 @@ int cpufreq_set_policy(struct cpufreq_policy *policy,
		if (ret)
		return ret;

		/*
		* The notifier-chain shall be removed once all the users of
		* CPUFREQ_ADJUST are moved to use the QoS framework.
		*/
		/* adjust if necessary - all reasons */
		blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
		CPUFREQ_ADJUST, new_policy);

		/*
		* verify the cpu speed can be set within this limit, which might be
		* different to the first one
		*/
		ret = cpufreq_driver->verify(new_policy);
		if (ret)
		return ret;

		/* notification of the new policy */
		blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
		CPUFREQ_NOTIFY, new_policy);

		policy->min = new_policy->min;
		policy->max = new_policy->max;
		trace_cpu_frequency_limits(policy);

include/linux/cpufreq.h

+2 −4

Original line number	Diff line number	Diff line
		@@ -456,10 +456,8 @@ static inline void cpufreq_resume(void) {}
		#define CPUFREQ_POSTCHANGE (1)

		/* Policy Notifiers */
		#define CPUFREQ_ADJUST (0)
		#define CPUFREQ_NOTIFY (1)
		#define CPUFREQ_CREATE_POLICY (2)
		#define CPUFREQ_REMOVE_POLICY (3)
		#define CPUFREQ_CREATE_POLICY (0)
		#define CPUFREQ_REMOVE_POLICY (1)

		#ifdef CONFIG_CPU_FREQ
		int cpufreq_register_notifier(struct notifier_block *nb, unsigned int list);

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