percpu: add preemption checks to __this_cpu ops

[karo-tx-linux.git] / include / linux / cpufreq.h

diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 2d2e62c8666ad71962315ac4f7041029474a5fec..c48e595f623e682cea2b8a8e5d83cd30f5275ad0 100644 (file)
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -16,6 +16,7 @@
 #include <linux/completion.h>
 #include <linux/kobject.h>
 #include <linux/notifier.h>
+#include <linux/spinlock.h>
 #include <linux/sysfs.h>
 
 /*********************************************************************
@@ -104,6 +105,11 @@ struct cpufreq_policy {
         *     __cpufreq_governor(data, CPUFREQ_GOV_POLICY_EXIT);
         */
        struct rw_semaphore     rwsem;
+
+       /* Synchronization for frequency transitions */
+       bool                    transition_ongoing; /* Tracks transition status */
+       spinlock_t              transition_lock;
+       wait_queue_head_t       transition_wait;
 };
 
 /* Only for ACPI */
@@ -333,9 +339,9 @@ static inline void cpufreq_resume(void) {}
 int cpufreq_register_notifier(struct notifier_block *nb, unsigned int list);
 int cpufreq_unregister_notifier(struct notifier_block *nb, unsigned int list);
 
-void cpufreq_notify_transition(struct cpufreq_policy *policy,
-               struct cpufreq_freqs *freqs, unsigned int state);
-void cpufreq_notify_post_transition(struct cpufreq_policy *policy,
+void cpufreq_freq_transition_begin(struct cpufreq_policy *policy,
+               struct cpufreq_freqs *freqs);
+void cpufreq_freq_transition_end(struct cpufreq_policy *policy,
                struct cpufreq_freqs *freqs, int transition_failed);
 
 #else /* CONFIG_CPU_FREQ */