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Commit 46373a15 authored by Jean Delvare's avatar Jean Delvare Committed by Rafael J. Wysocki
Browse files

time: nohz: Expose tick_nohz_enabled 



The cpuidle subsystem needs it.

Signed-off-by: default avatarJean Delvare <jdelvare@suse.de>
Reviewed-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 9c4b2867

include/linux/tick.h

+2 −0
Original line number Diff line number Diff line
@@ -98,6 +98,7 @@ static inline void tick_broadcast_exit(void) 
}



#ifdef CONFIG_NO_HZ_COMMON

extern int tick_nohz_enabled;

extern int tick_nohz_tick_stopped(void);

extern void tick_nohz_idle_enter(void);

extern void tick_nohz_idle_exit(void);
@@ -106,6 +107,7 @@ extern ktime_t tick_nohz_get_sleep_length(void); 
extern u64 get_cpu_idle_time_us(int cpu, u64 *last_update_time);

extern u64 get_cpu_iowait_time_us(int cpu, u64 *last_update_time);

#else /* !CONFIG_NO_HZ_COMMON */

#define tick_nohz_enabled (0)

static inline int tick_nohz_tick_stopped(void) { return 0; }

static inline void tick_nohz_idle_enter(void) { }

static inline void tick_nohz_idle_exit(void) { }

kernel/time/tick-sched.c

+1 −1
Original line number Diff line number Diff line
@@ -387,7 +387,7 @@ void __init tick_nohz_init(void) 
/*

 * NO HZ enabled ?

 */

static int tick_nohz_enabled __read_mostly  = 1;

int tick_nohz_enabled __read_mostly = 1;

unsigned long tick_nohz_active  __read_mostly;

/*

 * Enable / Disable tickless mode