diff options
Diffstat (limited to 'include/linux/cpufreq.h')
| -rw-r--r-- | include/linux/cpufreq.h | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 2d2e62c8666a..5ae5100c1f24 100644 --- 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 */ @@ -449,11 +455,14 @@ extern struct cpufreq_governor cpufreq_gov_conservative; * FREQUENCY TABLE HELPERS * *********************************************************************/ -#define CPUFREQ_ENTRY_INVALID ~0 -#define CPUFREQ_TABLE_END ~1 -#define CPUFREQ_BOOST_FREQ ~2 +/* Special Values of .frequency field */ +#define CPUFREQ_ENTRY_INVALID ~0 +#define CPUFREQ_TABLE_END ~1 +/* Special Values of .flags field */ +#define CPUFREQ_BOOST_FREQ (1 << 0) struct cpufreq_frequency_table { + unsigned int flags; unsigned int driver_data; /* driver specific data, not used by core */ unsigned int frequency; /* kHz - doesn't need to be in ascending * order */ |