diff options
author | Viresh Kumar <viresh.kumar@linaro.org> | 2019-06-20 08:35:49 +0530 |
---|---|---|
committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-06-28 11:17:12 +0200 |
commit | 5980752e6ef7079c0839576df10f8062d8a48883 (patch) | |
tree | 41400aa6e5b346636f7c6636ee2c737afbfd3b17 | |
parent | 9801522840cc1073f8064b4c979b7b6995c74bca (diff) |
cpufreq: Consolidate cpufreq_update_current_freq() and __cpufreq_get()
Their implementations are quite similar, so modify
cpufreq_update_current_freq() somewhat and call it from
__cpufreq_get().
Also rename cpufreq_update_current_freq() to
cpufreq_verify_current_freq(), as that's what it is doing.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
[ rjw: Subject & changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
-rw-r--r-- | drivers/cpufreq/cpufreq.c | 70 |
1 files changed, 28 insertions, 42 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 2930065f78a4..cba9c9e1bd0f 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1545,6 +1545,30 @@ static void cpufreq_out_of_sync(struct cpufreq_policy *policy, cpufreq_freq_transition_end(policy, &freqs, 0); } +static unsigned int cpufreq_verify_current_freq(struct cpufreq_policy *policy, bool update) +{ + unsigned int new_freq; + + new_freq = cpufreq_driver->get(policy->cpu); + if (!new_freq) + return 0; + + /* + * If fast frequency switching is used with the given policy, the check + * against policy->cur is pointless, so skip it in that case. + */ + if (policy->fast_switch_enabled || !has_target()) + return new_freq; + + if (policy->cur != new_freq) { + cpufreq_out_of_sync(policy, new_freq); + if (update) + schedule_work(&policy->update); + } + + return new_freq; +} + /** * cpufreq_quick_get - get the CPU frequency (in kHz) from policy->cur * @cpu: CPU number @@ -1600,30 +1624,10 @@ EXPORT_SYMBOL(cpufreq_quick_get_max); static unsigned int __cpufreq_get(struct cpufreq_policy *policy) { - unsigned int ret_freq = 0; - if (unlikely(policy_is_inactive(policy))) - return ret_freq; - - ret_freq = cpufreq_driver->get(policy->cpu); - - /* - * If fast frequency switching is used with the given policy, the check - * against policy->cur is pointless, so skip it in that case too. - */ - if (policy->fast_switch_enabled) - return ret_freq; - - if (has_target() && ret_freq && policy->cur) { - /* verify no discrepancy between actual and - saved value exists */ - if (unlikely(ret_freq != policy->cur)) { - cpufreq_out_of_sync(policy, ret_freq); - schedule_work(&policy->update); - } - } + return 0; - return ret_freq; + return cpufreq_verify_current_freq(policy, true); } /** @@ -1650,24 +1654,6 @@ unsigned int cpufreq_get(unsigned int cpu) } EXPORT_SYMBOL(cpufreq_get); -static unsigned int cpufreq_update_current_freq(struct cpufreq_policy *policy) -{ - unsigned int new_freq; - - new_freq = cpufreq_driver->get(policy->cpu); - if (!new_freq) - return 0; - - if (!policy->cur) { - pr_debug("cpufreq: Driver did not initialize current freq\n"); - policy->cur = new_freq; - } else if (policy->cur != new_freq && has_target()) { - cpufreq_out_of_sync(policy, new_freq); - } - - return new_freq; -} - static struct subsys_interface cpufreq_interface = { .name = "cpufreq", .subsys = &cpu_subsys, @@ -2149,7 +2135,7 @@ static int cpufreq_start_governor(struct cpufreq_policy *policy) pr_debug("%s: for CPU %u\n", __func__, policy->cpu); if (cpufreq_driver->get) - cpufreq_update_current_freq(policy); + cpufreq_verify_current_freq(policy, false); if (policy->governor->start) { ret = policy->governor->start(policy); @@ -2400,7 +2386,7 @@ void cpufreq_update_policy(unsigned int cpu) * -> ask driver for current freq and notify governors about a change */ if (cpufreq_driver->get && has_target() && - (cpufreq_suspended || WARN_ON(!cpufreq_update_current_freq(policy)))) + (cpufreq_suspended || WARN_ON(!cpufreq_verify_current_freq(policy, false)))) goto unlock; pr_debug("updating policy for CPU %u\n", cpu); |