[linux-block.git] / include / linux / tick.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Tick related global functions
 */
#ifndef _LINUX_TICK_H
#define _LINUX_TICK_H

#include <linux/clockchips.h>
#include <linux/irqflags.h>
#include <linux/percpu.h>
#include <linux/context_tracking_state.h>
#include <linux/cpumask.h>
#include <linux/sched.h>

#ifdef CONFIG_GENERIC_CLOCKEVENTS
extern void __init tick_init(void);
/* Should be core only, but ARM BL switcher requires it */
extern void tick_suspend_local(void);
/* Should be core only, but XEN resume magic and ARM BL switcher require it */
extern void tick_resume_local(void);
extern void tick_handover_do_timer(void);
extern void tick_cleanup_dead_cpu(int cpu);
#else /* CONFIG_GENERIC_CLOCKEVENTS */
static inline void tick_init(void) { }
static inline void tick_suspend_local(void) { }
static inline void tick_resume_local(void) { }
static inline void tick_handover_do_timer(void) { }
static inline void tick_cleanup_dead_cpu(int cpu) { }
#endif /* !CONFIG_GENERIC_CLOCKEVENTS */

#if defined(CONFIG_GENERIC_CLOCKEVENTS) && defined(CONFIG_SUSPEND)
extern void tick_freeze(void);
extern void tick_unfreeze(void);
#else
static inline void tick_freeze(void) { }
static inline void tick_unfreeze(void) { }
#endif

#ifdef CONFIG_TICK_ONESHOT
extern void tick_irq_enter(void);
#  ifndef arch_needs_cpu
#   define arch_needs_cpu() (0)
#  endif
# else
static inline void tick_irq_enter(void) { }
#endif

#if defined(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) && defined(CONFIG_TICK_ONESHOT)
extern void hotplug_cpu__broadcast_tick_pull(int dead_cpu);
#else
static inline void hotplug_cpu__broadcast_tick_pull(int dead_cpu) { }
#endif

enum tick_broadcast_mode {
	TICK_BROADCAST_OFF,
	TICK_BROADCAST_ON,
	TICK_BROADCAST_FORCE,
};

enum tick_broadcast_state {
	TICK_BROADCAST_EXIT,
	TICK_BROADCAST_ENTER,
};

#ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
extern void tick_broadcast_control(enum tick_broadcast_mode mode);
#else
static inline void tick_broadcast_control(enum tick_broadcast_mode mode) { }
#endif /* BROADCAST */

#if defined(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) && defined(CONFIG_HOTPLUG_CPU)
extern void tick_offline_cpu(unsigned int cpu);
#else
static inline void tick_offline_cpu(unsigned int cpu) { }
#endif

#ifdef CONFIG_GENERIC_CLOCKEVENTS
extern int tick_broadcast_oneshot_control(enum tick_broadcast_state state);
#else
static inline int tick_broadcast_oneshot_control(enum tick_broadcast_state state)
{
	return 0;
}
#endif

static inline void tick_broadcast_enable(void)
{
	tick_broadcast_control(TICK_BROADCAST_ON);
}
static inline void tick_broadcast_disable(void)
{
	tick_broadcast_control(TICK_BROADCAST_OFF);
}
static inline void tick_broadcast_force(void)
{
	tick_broadcast_control(TICK_BROADCAST_FORCE);
}
static inline int tick_broadcast_enter(void)
{
	return tick_broadcast_oneshot_control(TICK_BROADCAST_ENTER);
}
static inline void tick_broadcast_exit(void)
{
	tick_broadcast_oneshot_control(TICK_BROADCAST_EXIT);
}

enum tick_dep_bits {
	TICK_DEP_BIT_POSIX_TIMER	= 0,
	TICK_DEP_BIT_PERF_EVENTS	= 1,
	TICK_DEP_BIT_SCHED		= 2,
	TICK_DEP_BIT_CLOCK_UNSTABLE	= 3
};

#define TICK_DEP_MASK_NONE		0
#define TICK_DEP_MASK_POSIX_TIMER	(1 << TICK_DEP_BIT_POSIX_TIMER)
#define TICK_DEP_MASK_PERF_EVENTS	(1 << TICK_DEP_BIT_PERF_EVENTS)
#define TICK_DEP_MASK_SCHED		(1 << TICK_DEP_BIT_SCHED)
#define TICK_DEP_MASK_CLOCK_UNSTABLE	(1 << TICK_DEP_BIT_CLOCK_UNSTABLE)

#ifdef CONFIG_NO_HZ_COMMON
extern bool tick_nohz_enabled;
extern bool tick_nohz_tick_stopped(void);
extern bool tick_nohz_tick_stopped_cpu(int cpu);
extern void tick_nohz_idle_stop_tick(void);
extern void tick_nohz_idle_retain_tick(void);
extern void tick_nohz_idle_restart_tick(void);
extern void tick_nohz_idle_enter(void);
extern void tick_nohz_idle_exit(void);
extern void tick_nohz_irq_exit(void);
extern bool tick_nohz_idle_got_tick(void);
extern ktime_t tick_nohz_get_next_hrtimer(void);
extern ktime_t tick_nohz_get_sleep_length(ktime_t *delta_next);
extern unsigned long tick_nohz_get_idle_calls(void);
extern unsigned long tick_nohz_get_idle_calls_cpu(int cpu);
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);

static inline void tick_nohz_idle_stop_tick_protected(void)
{
	local_irq_disable();
	tick_nohz_idle_stop_tick();
	local_irq_enable();
}

#else /* !CONFIG_NO_HZ_COMMON */
#define tick_nohz_enabled (0)
static inline int tick_nohz_tick_stopped(void) { return 0; }
static inline int tick_nohz_tick_stopped_cpu(int cpu) { return 0; }
static inline void tick_nohz_idle_stop_tick(void) { }
static inline void tick_nohz_idle_retain_tick(void) { }
static inline void tick_nohz_idle_restart_tick(void) { }
static inline void tick_nohz_idle_enter(void) { }
static inline void tick_nohz_idle_exit(void) { }
static inline bool tick_nohz_idle_got_tick(void) { return false; }
static inline ktime_t tick_nohz_get_next_hrtimer(void)
{
	/* Next wake up is the tick period, assume it starts now */
	return ktime_add(ktime_get(), TICK_NSEC);
}
static inline ktime_t tick_nohz_get_sleep_length(ktime_t *delta_next)
{
	*delta_next = TICK_NSEC;
	return *delta_next;
}
static inline u64 get_cpu_idle_time_us(int cpu, u64 *unused) { return -1; }
static inline u64 get_cpu_iowait_time_us(int cpu, u64 *unused) { return -1; }

static inline void tick_nohz_idle_stop_tick_protected(void) { }
#endif /* !CONFIG_NO_HZ_COMMON */

#ifdef CONFIG_NO_HZ_FULL
extern bool tick_nohz_full_running;
extern cpumask_var_t tick_nohz_full_mask;

static inline bool tick_nohz_full_enabled(void)
{
	if (!context_tracking_is_enabled())
		return false;

	return tick_nohz_full_running;
}

static inline bool tick_nohz_full_cpu(int cpu)
{
	if (!tick_nohz_full_enabled())
		return false;

	return cpumask_test_cpu(cpu, tick_nohz_full_mask);
}

static inline void tick_nohz_full_add_cpus_to(struct cpumask *mask)
{
	if (tick_nohz_full_enabled())
		cpumask_or(mask, mask, tick_nohz_full_mask);
}

extern void tick_nohz_dep_set(enum tick_dep_bits bit);
extern void tick_nohz_dep_clear(enum tick_dep_bits bit);
extern void tick_nohz_dep_set_cpu(int cpu, enum tick_dep_bits bit);
extern void tick_nohz_dep_clear_cpu(int cpu, enum tick_dep_bits bit);
extern void tick_nohz_dep_set_task(struct task_struct *tsk,
				   enum tick_dep_bits bit);
extern void tick_nohz_dep_clear_task(struct task_struct *tsk,
				     enum tick_dep_bits bit);
extern void tick_nohz_dep_set_signal(struct signal_struct *signal,
				     enum tick_dep_bits bit);
extern void tick_nohz_dep_clear_signal(struct signal_struct *signal,
				       enum tick_dep_bits bit);

/*
 * The below are tick_nohz_[set,clear]_dep() wrappers that optimize off-cases
 * on top of static keys.
 */
static inline void tick_dep_set(enum tick_dep_bits bit)
{
	if (tick_nohz_full_enabled())
		tick_nohz_dep_set(bit);
}

static inline void tick_dep_clear(enum tick_dep_bits bit)
{
	if (tick_nohz_full_enabled())
		tick_nohz_dep_clear(bit);
}

static inline void tick_dep_set_cpu(int cpu, enum tick_dep_bits bit)
{
	if (tick_nohz_full_cpu(cpu))
		tick_nohz_dep_set_cpu(cpu, bit);
}

static inline void tick_dep_clear_cpu(int cpu, enum tick_dep_bits bit)
{
	if (tick_nohz_full_cpu(cpu))
		tick_nohz_dep_clear_cpu(cpu, bit);
}

static inline void tick_dep_set_task(struct task_struct *tsk,
				     enum tick_dep_bits bit)
{
	if (tick_nohz_full_enabled())
		tick_nohz_dep_set_task(tsk, bit);
}
static inline void tick_dep_clear_task(struct task_struct *tsk,
				       enum tick_dep_bits bit)
{
	if (tick_nohz_full_enabled())
		tick_nohz_dep_clear_task(tsk, bit);
}
static inline void tick_dep_set_signal(struct signal_struct *signal,
				       enum tick_dep_bits bit)
{
	if (tick_nohz_full_enabled())
		tick_nohz_dep_set_signal(signal, bit);
}
static inline void tick_dep_clear_signal(struct signal_struct *signal,
					 enum tick_dep_bits bit)
{
	if (tick_nohz_full_enabled())
		tick_nohz_dep_clear_signal(signal, bit);
}

extern void tick_nohz_full_kick_cpu(int cpu);
extern void __tick_nohz_task_switch(void);
extern void __init tick_nohz_full_setup(cpumask_var_t cpumask);
#else
static inline bool tick_nohz_full_enabled(void) { return false; }
static inline bool tick_nohz_full_cpu(int cpu) { return false; }
static inline void tick_nohz_full_add_cpus_to(struct cpumask *mask) { }

static inline void tick_dep_set(enum tick_dep_bits bit) { }
static inline void tick_dep_clear(enum tick_dep_bits bit) { }
static inline void tick_dep_set_cpu(int cpu, enum tick_dep_bits bit) { }
static inline void tick_dep_clear_cpu(int cpu, enum tick_dep_bits bit) { }
static inline void tick_dep_set_task(struct task_struct *tsk,
				     enum tick_dep_bits bit) { }
static inline void tick_dep_clear_task(struct task_struct *tsk,
				       enum tick_dep_bits bit) { }
static inline void tick_dep_set_signal(struct signal_struct *signal,
				       enum tick_dep_bits bit) { }
static inline void tick_dep_clear_signal(struct signal_struct *signal,
					 enum tick_dep_bits bit) { }

static inline void tick_nohz_full_kick_cpu(int cpu) { }
static inline void __tick_nohz_task_switch(void) { }
static inline void tick_nohz_full_setup(cpumask_var_t cpumask) { }
#endif

static inline void tick_nohz_task_switch(void)
{
	if (tick_nohz_full_enabled())
		__tick_nohz_task_switch();
}

#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
c1797baf TG	2	/*
c1797baf TG	3	* Tick related global functions
906568c9 TG	4	*/
	5	#ifndef _LINUX_TICK_H
	6	#define _LINUX_TICK_H
	7
	8	#include <linux/clockchips.h>
2bbb6817	9	#include <linux/irqflags.h>
33a5f626	10	#include <linux/percpu.h>
460775df FW	11	#include <linux/context_tracking_state.h>
460775df FW	12	#include <linux/cpumask.h>
c0f489d2	13	#include <linux/sched.h>
906568c9	14
c1797baf TG	15	#ifdef CONFIG_GENERIC_CLOCKEVENTS
c1797baf TG	16	extern void __init tick_init(void);
7270d11c TG	17	/* Should be core only, but ARM BL switcher requires it */
	18	extern void tick_suspend_local(void);
	19	/* Should be core only, but XEN resume magic and ARM BL switcher require it */
f46481d0	20	extern void tick_resume_local(void);
52c063d1	21	extern void tick_handover_do_timer(void);
a49b116d	22	extern void tick_cleanup_dead_cpu(int cpu);
c1797baf TG	23	#else /* CONFIG_GENERIC_CLOCKEVENTS */
c1797baf TG	24	static inline void tick_init(void) { }
7270d11c	25	static inline void tick_suspend_local(void) { }
f46481d0	26	static inline void tick_resume_local(void) { }
52c063d1	27	static inline void tick_handover_do_timer(void) { }
a49b116d	28	static inline void tick_cleanup_dead_cpu(int cpu) { }
c1797baf	29	#endif /* !CONFIG_GENERIC_CLOCKEVENTS */
124cf911	30
87e9b9f1 RW	31	#if defined(CONFIG_GENERIC_CLOCKEVENTS) && defined(CONFIG_SUSPEND)
	32	extern void tick_freeze(void);
	33	extern void tick_unfreeze(void);
	34	#else
	35	static inline void tick_freeze(void) { }
	36	static inline void tick_unfreeze(void) { }
	37	#endif
	38
c1797baf	39	#ifdef CONFIG_TICK_ONESHOT
5acac1be	40	extern void tick_irq_enter(void);
3c5d92a0	41	# ifndef arch_needs_cpu
fe0f4976	42	# define arch_needs_cpu() (0)
3c5d92a0	43	# endif
79bf2bb3	44	# else
5acac1be	45	static inline void tick_irq_enter(void) { }
c1797baf	46	#endif
33a5f626	47
345527b1 PM	48	#if defined(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) && defined(CONFIG_TICK_ONESHOT)
	49	extern void hotplug_cpu__broadcast_tick_pull(int dead_cpu);
	50	#else
	51	static inline void hotplug_cpu__broadcast_tick_pull(int dead_cpu) { }
	52	#endif
	53
592a438f TG	54	enum tick_broadcast_mode {
	55	TICK_BROADCAST_OFF,
	56	TICK_BROADCAST_ON,
	57	TICK_BROADCAST_FORCE,
	58	};
	59
1fe5d5c3 TG	60	enum tick_broadcast_state {
	61	TICK_BROADCAST_EXIT,
	62	TICK_BROADCAST_ENTER,
	63	};
	64
592a438f TG	65	#ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
	66	extern void tick_broadcast_control(enum tick_broadcast_mode mode);
	67	#else
	68	static inline void tick_broadcast_control(enum tick_broadcast_mode mode) { }
	69	#endif /* BROADCAST */
	70
1b72d432 TG	71	#if defined(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) && defined(CONFIG_HOTPLUG_CPU)
	72	extern void tick_offline_cpu(unsigned int cpu);
	73	#else
	74	static inline void tick_offline_cpu(unsigned int cpu) { }
	75	#endif
	76
37b64a42	77	#ifdef CONFIG_GENERIC_CLOCKEVENTS
1fe5d5c3	78	extern int tick_broadcast_oneshot_control(enum tick_broadcast_state state);
37b64a42 TG	79	#else
	80	static inline int tick_broadcast_oneshot_control(enum tick_broadcast_state state)
	81	{
	82	return 0;
	83	}
	84	#endif
1fe5d5c3	85
592a438f TG	86	static inline void tick_broadcast_enable(void)
	87	{
	88	tick_broadcast_control(TICK_BROADCAST_ON);
	89	}
	90	static inline void tick_broadcast_disable(void)
	91	{
	92	tick_broadcast_control(TICK_BROADCAST_OFF);
	93	}
	94	static inline void tick_broadcast_force(void)
	95	{
	96	tick_broadcast_control(TICK_BROADCAST_FORCE);
	97	}
1fe5d5c3 TG	98	static inline int tick_broadcast_enter(void)
	99	{
	100	return tick_broadcast_oneshot_control(TICK_BROADCAST_ENTER);
	101	}
	102	static inline void tick_broadcast_exit(void)
	103	{
	104	tick_broadcast_oneshot_control(TICK_BROADCAST_EXIT);
	105	}
592a438f	106
d027d45d FW	107	enum tick_dep_bits {
	108	TICK_DEP_BIT_POSIX_TIMER = 0,
	109	TICK_DEP_BIT_PERF_EVENTS = 1,
	110	TICK_DEP_BIT_SCHED = 2,
	111	TICK_DEP_BIT_CLOCK_UNSTABLE = 3
	112	};
	113
e6e6cc22	114	#define TICK_DEP_MASK_NONE 0
d027d45d FW	115	#define TICK_DEP_MASK_POSIX_TIMER (1 << TICK_DEP_BIT_POSIX_TIMER)
	116	#define TICK_DEP_MASK_PERF_EVENTS (1 << TICK_DEP_BIT_PERF_EVENTS)
	117	#define TICK_DEP_MASK_SCHED (1 << TICK_DEP_BIT_SCHED)
	118	#define TICK_DEP_MASK_CLOCK_UNSTABLE (1 << TICK_DEP_BIT_CLOCK_UNSTABLE)
	119
c1797baf	120	#ifdef CONFIG_NO_HZ_COMMON
4cc7ecb7	121	extern bool tick_nohz_enabled;
a3642983	122	extern bool tick_nohz_tick_stopped(void);
22ab8bc0	123	extern bool tick_nohz_tick_stopped_cpu(int cpu);
0e776768	124	extern void tick_nohz_idle_stop_tick(void);
554c8aa8	125	extern void tick_nohz_idle_retain_tick(void);
2aaf709a	126	extern void tick_nohz_idle_restart_tick(void);
1268fbc7	127	extern void tick_nohz_idle_enter(void);
280f0677 FW	128	extern void tick_nohz_idle_exit(void);
280f0677 FW	129	extern void tick_nohz_irq_exit(void);
45f1ff59	130	extern bool tick_nohz_idle_got_tick(void);
6f9b83ac	131	extern ktime_t tick_nohz_get_next_hrtimer(void);
296bb1e5	132	extern ktime_t tick_nohz_get_sleep_length(ktime_t *delta_next);
b7eaf1aa	133	extern unsigned long tick_nohz_get_idle_calls(void);
466a2b42	134	extern unsigned long tick_nohz_get_idle_calls_cpu(int cpu);
6378ddb5	135	extern u64 get_cpu_idle_time_us(int cpu, u64 *last_update_time);
0224cf4c	136	extern u64 get_cpu_iowait_time_us(int cpu, u64 *last_update_time);
0e776768 RW	137
	138	static inline void tick_nohz_idle_stop_tick_protected(void)
	139	{
	140	local_irq_disable();
	141	tick_nohz_idle_stop_tick();
	142	local_irq_enable();
	143	}
	144
c1797baf	145	#else /* !CONFIG_NO_HZ_COMMON */
46373a15	146	#define tick_nohz_enabled (0)
c1797baf	147	static inline int tick_nohz_tick_stopped(void) { return 0; }
22ab8bc0	148	static inline int tick_nohz_tick_stopped_cpu(int cpu) { return 0; }
0e776768	149	static inline void tick_nohz_idle_stop_tick(void) { }
554c8aa8	150	static inline void tick_nohz_idle_retain_tick(void) { }
2aaf709a	151	static inline void tick_nohz_idle_restart_tick(void) { }
2bbb6817 FW	152	static inline void tick_nohz_idle_enter(void) { }
2bbb6817 FW	153	static inline void tick_nohz_idle_exit(void) { }
45f1ff59	154	static inline bool tick_nohz_idle_got_tick(void) { return false; }
6f9b83ac UH	155	static inline ktime_t tick_nohz_get_next_hrtimer(void)
	156	{
	157	/* Next wake up is the tick period, assume it starts now */
	158	return ktime_add(ktime_get(), TICK_NSEC);
	159	}
296bb1e5	160	static inline ktime_t tick_nohz_get_sleep_length(ktime_t *delta_next)
4f86d3a8	161	{
296bb1e5 RW	162	*delta_next = TICK_NSEC;
296bb1e5 RW	163	return *delta_next;
4f86d3a8	164	}
8083e4ad	165	static inline u64 get_cpu_idle_time_us(int cpu, u64 *unused) { return -1; }
0224cf4c	166	static inline u64 get_cpu_iowait_time_us(int cpu, u64 *unused) { return -1; }
0e776768 RW	167
0e776768 RW	168	static inline void tick_nohz_idle_stop_tick_protected(void) { }
c1797baf	169	#endif /* !CONFIG_NO_HZ_COMMON */
906568c9	170
c5bfece2	171	#ifdef CONFIG_NO_HZ_FULL
460775df FW	172	extern bool tick_nohz_full_running;
	173	extern cpumask_var_t tick_nohz_full_mask;
	174
	175	static inline bool tick_nohz_full_enabled(void)
	176	{
58135f57	177	if (!context_tracking_is_enabled())
460775df FW	178	return false;
	179
	180	return tick_nohz_full_running;
	181	}
	182
	183	static inline bool tick_nohz_full_cpu(int cpu)
	184	{
	185	if (!tick_nohz_full_enabled())
	186	return false;
	187
	188	return cpumask_test_cpu(cpu, tick_nohz_full_mask);
	189	}
	190
83dedea8 CM	191	static inline void tick_nohz_full_add_cpus_to(struct cpumask *mask)
	192	{
	193	if (tick_nohz_full_enabled())
	194	cpumask_or(mask, mask, tick_nohz_full_mask);
	195	}
	196
d027d45d FW	197	extern void tick_nohz_dep_set(enum tick_dep_bits bit);
	198	extern void tick_nohz_dep_clear(enum tick_dep_bits bit);
	199	extern void tick_nohz_dep_set_cpu(int cpu, enum tick_dep_bits bit);
	200	extern void tick_nohz_dep_clear_cpu(int cpu, enum tick_dep_bits bit);
	201	extern void tick_nohz_dep_set_task(struct task_struct *tsk,
	202	enum tick_dep_bits bit);
	203	extern void tick_nohz_dep_clear_task(struct task_struct *tsk,
	204	enum tick_dep_bits bit);
	205	extern void tick_nohz_dep_set_signal(struct signal_struct *signal,
	206	enum tick_dep_bits bit);
	207	extern void tick_nohz_dep_clear_signal(struct signal_struct *signal,
	208	enum tick_dep_bits bit);
	209
	210	/*
	211	* The below are tick_nohz_[set,clear]_dep() wrappers that optimize off-cases
	212	* on top of static keys.
	213	*/
	214	static inline void tick_dep_set(enum tick_dep_bits bit)
	215	{
	216	if (tick_nohz_full_enabled())
	217	tick_nohz_dep_set(bit);
	218	}
	219
	220	static inline void tick_dep_clear(enum tick_dep_bits bit)
	221	{
	222	if (tick_nohz_full_enabled())
	223	tick_nohz_dep_clear(bit);
	224	}
	225
	226	static inline void tick_dep_set_cpu(int cpu, enum tick_dep_bits bit)
	227	{
	228	if (tick_nohz_full_cpu(cpu))
	229	tick_nohz_dep_set_cpu(cpu, bit);
	230	}
	231
	232	static inline void tick_dep_clear_cpu(int cpu, enum tick_dep_bits bit)
	233	{
	234	if (tick_nohz_full_cpu(cpu))
	235	tick_nohz_dep_clear_cpu(cpu, bit);
	236	}
	237
	238	static inline void tick_dep_set_task(struct task_struct *tsk,
	239	enum tick_dep_bits bit)
	240	{
	241	if (tick_nohz_full_enabled())
	242	tick_nohz_dep_set_task(tsk, bit);
	243	}
	244	static inline void tick_dep_clear_task(struct task_struct *tsk,
	245	enum tick_dep_bits bit)
	246	{
	247	if (tick_nohz_full_enabled())
	248	tick_nohz_dep_clear_task(tsk, bit);
	249	}
	250	static inline void tick_dep_set_signal(struct signal_struct *signal,
	251	enum tick_dep_bits bit)
	252	{
	253	if (tick_nohz_full_enabled())
	254	tick_nohz_dep_set_signal(signal, bit);
	255	}
	256	static inline void tick_dep_clear_signal(struct signal_struct *signal,
	257	enum tick_dep_bits bit)
	258	{
	259	if (tick_nohz_full_enabled())
	260	tick_nohz_dep_clear_signal(signal, bit);
261	}
262
3d36aebc	263	extern void tick_nohz_full_kick_cpu(int cpu);
de734f89	264	extern void __tick_nohz_task_switch(void);
6f1982fe	265	extern void __init tick_nohz_full_setup(cpumask_var_t cpumask);
a831881b	266	#else
460775df FW	267	static inline bool tick_nohz_full_enabled(void) { return false; }
460775df FW	268	static inline bool tick_nohz_full_cpu(int cpu) { return false; }
83dedea8	269	static inline void tick_nohz_full_add_cpus_to(struct cpumask *mask) { }
d027d45d FW	270
	271	static inline void tick_dep_set(enum tick_dep_bits bit) { }
	272	static inline void tick_dep_clear(enum tick_dep_bits bit) { }
	273	static inline void tick_dep_set_cpu(int cpu, enum tick_dep_bits bit) { }
	274	static inline void tick_dep_clear_cpu(int cpu, enum tick_dep_bits bit) { }
	275	static inline void tick_dep_set_task(struct task_struct *tsk,
	276	enum tick_dep_bits bit) { }
	277	static inline void tick_dep_clear_task(struct task_struct *tsk,
	278	enum tick_dep_bits bit) { }
	279	static inline void tick_dep_set_signal(struct signal_struct *signal,
	280	enum tick_dep_bits bit) { }
	281	static inline void tick_dep_clear_signal(struct signal_struct *signal,
	282	enum tick_dep_bits bit) { }
	283
3d36aebc	284	static inline void tick_nohz_full_kick_cpu(int cpu) { }
de734f89	285	static inline void __tick_nohz_task_switch(void) { }
6f1982fe	286	static inline void tick_nohz_full_setup(cpumask_var_t cpumask) { }
a831881b FW	287	#endif
a831881b FW	288
de734f89	289	static inline void tick_nohz_task_switch(void)
d13508f9 FW	290	{
d13508f9 FW	291	if (tick_nohz_full_enabled())
de734f89	292	__tick_nohz_task_switch();
d13508f9 FW	293	}
d13508f9 FW	294
906568c9	295	#endif