kernel, libroot: Make scheduler modes interface public

headers/os/kernel/scheduler.h

@@ -49,6 +49,11 @@ enum be_task_flags {
 	B_MIDI_PROCESSING			= 0x800
 };
 
+enum scheduler_mode {
+	SCHEDULER_MODE_LOW_LATENCY,
+	SCHEDULER_MODE_POWER_SAVING,
+};
+
 #if defined(__cplusplus)
 extern "C" {
 
@@ -58,6 +63,9 @@ int32 suggest_thread_priority(uint32 task_flags = B_DEFAULT_MEDIA_PRIORITY,
 bigtime_t estimate_max_scheduling_latency(thread_id th = -1);
 	/* default is current thread */
 
+status_t set_scheduler_mode(int32 mode);
+int32 get_scheduler_mode(void);
+
 }
 #else
 
@@ -67,6 +75,9 @@ int32 suggest_thread_priority(uint32 what, int32 period, bigtime_t jitter,
 bigtime_t estimate_max_scheduling_latency(thread_id th);
 	/* default is current thread */
 
+status_t set_scheduler_mode(int32 mode);
+int32 get_scheduler_mode(void);
+
 #endif
 
 #endif // SCHEDULER_H

headers/private/kernel/kscheduler.h

@@ -18,12 +18,10 @@ struct scheduling_analysis;
 struct SchedulerListener;
 
 
-typedef enum scheduler_mode {
+enum scheduler_mode {
 	SCHEDULER_MODE_LOW_LATENCY,
 	SCHEDULER_MODE_POWER_SAVING,
-	// ...
-	SCHEDULER_MODE_COUNT
-} scheduler_mode;
+};
 
 
 #ifdef __cplusplus
@@ -95,6 +93,9 @@ bigtime_t _user_estimate_max_scheduling_latency(thread_id thread);
 status_t _user_analyze_scheduling(bigtime_t from, bigtime_t until, void* buffer,
 	size_t size, struct scheduling_analysis* analysis);
 
+status_t _user_set_scheduler_mode(int32 mode);
+int32 _user_get_scheduler_mode(void);
+
 #ifdef __cplusplus
 }
 #endif

headers/private/system/syscalls.h

@@ -192,6 +192,9 @@ extern status_t		_kern_unblock_threads(thread_id* threads, uint32 count,
 
 extern bigtime_t	_kern_estimate_max_scheduling_latency(thread_id thread);
 
+extern status_t		_kern_set_scheduler_mode(int32 mode);
+extern int32		_kern_get_scheduler_mode(void);
+
 // user/group functions
 extern gid_t		_kern_getgid(bool effective);
 extern uid_t		_kern_getuid(bool effective);