[net-next-2.6.git] / include / linux / perf_counter.h

/*
 *  Performance counters:
 *
 *   Copyright(C) 2008, Thomas Gleixner <tglx@linutronix.de>
 *   Copyright(C) 2008, Red Hat, Inc., Ingo Molnar
 *
 *  Data type definitions, declarations, prototypes.
 *
 *  Started by: Thomas Gleixner and Ingo Molnar
 *
 *  For licencing details see kernel-base/COPYING
 */
#ifndef _LINUX_PERF_COUNTER_H
#define _LINUX_PERF_COUNTER_H

#include <linux/types.h>
#include <linux/ioctl.h>
#include <asm/byteorder.h>

/*
 * User-space ABI bits:
 */

/*
 * hw_event.type
 */
enum perf_event_types {
	PERF_TYPE_HARDWARE		= 0,
	PERF_TYPE_SOFTWARE		= 1,
	PERF_TYPE_TRACEPOINT		= 2,

	/*
	 * available TYPE space, raw is the max value.
	 */

	PERF_TYPE_RAW			= 128,
};

/*
 * Generalized performance counter event types, used by the hw_event.event_id
 * parameter of the sys_perf_counter_open() syscall:
 */
enum hw_event_ids {
	/*
	 * Common hardware events, generalized by the kernel:
	 */
	PERF_COUNT_CPU_CYCLES		= 0,
	PERF_COUNT_INSTRUCTIONS		= 1,
	PERF_COUNT_CACHE_REFERENCES	= 2,
	PERF_COUNT_CACHE_MISSES		= 3,
	PERF_COUNT_BRANCH_INSTRUCTIONS	= 4,
	PERF_COUNT_BRANCH_MISSES	= 5,
	PERF_COUNT_BUS_CYCLES		= 6,

	PERF_HW_EVENTS_MAX		= 7,
};

/*
 * Special "software" counters provided by the kernel, even if the hardware
 * does not support performance counters. These counters measure various
 * physical and sw events of the kernel (and allow the profiling of them as
 * well):
 */
enum sw_event_ids {
	PERF_COUNT_CPU_CLOCK		= 0,
	PERF_COUNT_TASK_CLOCK		= 1,
	PERF_COUNT_PAGE_FAULTS		= 2,
	PERF_COUNT_CONTEXT_SWITCHES	= 3,
	PERF_COUNT_CPU_MIGRATIONS	= 4,
	PERF_COUNT_PAGE_FAULTS_MIN	= 5,
	PERF_COUNT_PAGE_FAULTS_MAJ	= 6,

	PERF_SW_EVENTS_MAX		= 7,
};

/*
 * IRQ-notification data record type:
 */
enum perf_counter_record_type {
	PERF_RECORD_SIMPLE		= 0,
	PERF_RECORD_IRQ			= 1,
	PERF_RECORD_GROUP		= 2,
};

/*
 * Hardware event to monitor via a performance monitoring counter:
 */
struct perf_counter_hw_event {
	union {
#ifndef __BIG_ENDIAN_BITFIELD
		struct {
			__u64			event_id	: 56,
						type		:  8;
		};
		struct {
			__u64			raw_event_id	: 63,
						raw_type	:  1;
		};
#else
		struct {
			__u64			type		:  8,
						event_id	: 56;
		};
		struct {
			__u64			raw_type	:  1,
						raw_event_id	: 63;
		};
#endif /* __BIT_ENDIAN_BITFIELD */
		__u64		event_config;
	};

	__u64			irq_period;
	__u64			record_type;
	__u64			read_format;

	__u64			disabled       :  1, /* off by default        */
				nmi	       :  1, /* NMI sampling          */
				inherit	       :  1, /* children inherit it   */
				pinned	       :  1, /* must always be on PMU */
				exclusive      :  1, /* only group on PMU     */
				exclude_user   :  1, /* don't count user      */
				exclude_kernel :  1, /* ditto kernel          */
				exclude_hv     :  1, /* ditto hypervisor      */
				exclude_idle   :  1, /* don't count when idle */

				__reserved_1   : 55;

	__u32			extra_config_len;
	__u32			__reserved_4;

	__u64			__reserved_2;
	__u64			__reserved_3;
};

/*
 * Ioctls that can be done on a perf counter fd:
 */
#define PERF_COUNTER_IOC_ENABLE		_IO('$', 0)
#define PERF_COUNTER_IOC_DISABLE	_IO('$', 1)

#ifdef __KERNEL__
/*
 * Kernel-internal data types and definitions:
 */

#ifdef CONFIG_PERF_COUNTERS
# include <asm/perf_counter.h>
#endif

#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/rculist.h>
#include <linux/rcupdate.h>
#include <linux/spinlock.h>
#include <linux/hrtimer.h>
#include <asm/atomic.h>

struct task_struct;

/**
 * struct hw_perf_counter - performance counter hardware details:
 */
struct hw_perf_counter {
#ifdef CONFIG_PERF_COUNTERS
	union {
		struct { /* hardware */
			u64				config;
			unsigned long			config_base;
			unsigned long			counter_base;
			int				nmi;
			unsigned int			idx;
		};
		union { /* software */
			atomic64_t			count;
			struct hrtimer			hrtimer;
		};
	};
	atomic64_t			prev_count;
	u64				irq_period;
	atomic64_t			period_left;
#endif
};

/*
 * Hardcoded buffer length limit for now, for IRQ-fed events:
 */
#define PERF_DATA_BUFLEN		2048

/**
 * struct perf_data - performance counter IRQ data sampling ...
 */
struct perf_data {
	int				len;
	int				rd_idx;
	int				overrun;
	u8				data[PERF_DATA_BUFLEN];
};

struct perf_counter;

/**
 * struct hw_perf_counter_ops - performance counter hw ops
 */
struct hw_perf_counter_ops {
	int (*enable)			(struct perf_counter *counter);
	void (*disable)			(struct perf_counter *counter);
	void (*read)			(struct perf_counter *counter);
};

/**
 * enum perf_counter_active_state - the states of a counter
 */
enum perf_counter_active_state {
	PERF_COUNTER_STATE_ERROR	= -2,
	PERF_COUNTER_STATE_OFF		= -1,
	PERF_COUNTER_STATE_INACTIVE	=  0,
	PERF_COUNTER_STATE_ACTIVE	=  1,
};

struct file;

/**
 * struct perf_counter - performance counter kernel representation:
 */
struct perf_counter {
#ifdef CONFIG_PERF_COUNTERS
	struct list_head		list_entry;
	struct list_head		event_entry;
	struct list_head		sibling_list;
	struct perf_counter		*group_leader;
	const struct hw_perf_counter_ops *hw_ops;

	enum perf_counter_active_state	state;
	enum perf_counter_active_state	prev_state;
	atomic64_t			count;

	struct perf_counter_hw_event	hw_event;
	struct hw_perf_counter		hw;

	struct perf_counter_context	*ctx;
	struct task_struct		*task;
	struct file			*filp;

	struct perf_counter		*parent;
	struct list_head		child_list;

	/*
	 * Protect attach/detach and child_list:
	 */
	struct mutex			mutex;

	int				oncpu;
	int				cpu;

	/* read() / irq related data */
	wait_queue_head_t		waitq;
	/* optional: for NMIs */
	int				wakeup_pending;
	struct perf_data		*irqdata;
	struct perf_data		*usrdata;
	struct perf_data		data[2];

	void (*destroy)(struct perf_counter *);
	struct rcu_head			rcu_head;
#endif
};

/**
 * struct perf_counter_context - counter context structure
 *
 * Used as a container for task counters and CPU counters as well:
 */
struct perf_counter_context {
#ifdef CONFIG_PERF_COUNTERS
	/*
	 * Protect the states of the counters in the list,
	 * nr_active, and the list:
	 */
	spinlock_t		lock;
	/*
	 * Protect the list of counters.  Locking either mutex or lock
	 * is sufficient to ensure the list doesn't change; to change
	 * the list you need to lock both the mutex and the spinlock.
	 */
	struct mutex		mutex;

	struct list_head	counter_list;
	struct list_head	event_list;
	int			nr_counters;
	int			nr_active;
	int			is_active;
	struct task_struct	*task;
#endif
};

/**
 * struct perf_counter_cpu_context - per cpu counter context structure
 */
struct perf_cpu_context {
	struct perf_counter_context	ctx;
	struct perf_counter_context	*task_ctx;
	int				active_oncpu;
	int				max_pertask;
	int				exclusive;
};

/*
 * Set by architecture code:
 */
extern int perf_max_counters;

#ifdef CONFIG_PERF_COUNTERS
extern const struct hw_perf_counter_ops *
hw_perf_counter_init(struct perf_counter *counter);

extern void perf_counter_task_sched_in(struct task_struct *task, int cpu);
extern void perf_counter_task_sched_out(struct task_struct *task, int cpu);
extern void perf_counter_task_tick(struct task_struct *task, int cpu);
extern void perf_counter_init_task(struct task_struct *child);
extern void perf_counter_exit_task(struct task_struct *child);
extern void perf_counter_notify(struct pt_regs *regs);
extern void perf_counter_print_debug(void);
extern void perf_counter_unthrottle(void);
extern u64 hw_perf_save_disable(void);
extern void hw_perf_restore(u64 ctrl);
extern int perf_counter_task_disable(void);
extern int perf_counter_task_enable(void);
extern int hw_perf_group_sched_in(struct perf_counter *group_leader,
	       struct perf_cpu_context *cpuctx,
	       struct perf_counter_context *ctx, int cpu);

extern void perf_counter_output(struct perf_counter *counter,
				int nmi, struct pt_regs *regs);
/*
 * Return 1 for a software counter, 0 for a hardware counter
 */
static inline int is_software_counter(struct perf_counter *counter)
{
	return !counter->hw_event.raw_type &&
		counter->hw_event.type != PERF_TYPE_HARDWARE;
}

extern void perf_swcounter_event(u32, u64, int, struct pt_regs *);

#else
static inline void
perf_counter_task_sched_in(struct task_struct *task, int cpu)		{ }
static inline void
perf_counter_task_sched_out(struct task_struct *task, int cpu)		{ }
static inline void
perf_counter_task_tick(struct task_struct *task, int cpu)		{ }
static inline void perf_counter_init_task(struct task_struct *child)	{ }
static inline void perf_counter_exit_task(struct task_struct *child)	{ }
static inline void perf_counter_notify(struct pt_regs *regs)		{ }
static inline void perf_counter_print_debug(void)			{ }
static inline void perf_counter_unthrottle(void)			{ }
static inline void hw_perf_restore(u64 ctrl)				{ }
static inline u64 hw_perf_save_disable(void)		      { return 0; }
static inline int perf_counter_task_disable(void)	{ return -EINVAL; }
static inline int perf_counter_task_enable(void)	{ return -EINVAL; }

static inline void perf_swcounter_event(u32 event, u64 nr,
					int nmi, struct pt_regs *regs)	{ }
#endif

#endif /* __KERNEL__ */
#endif /* _LINUX_PERF_COUNTER_H */
Commit	Line	Data
0793a61d TG	1	/*
	2	* Performance counters:
	3	*
	4	* Copyright(C) 2008, Thomas Gleixner <tglx@linutronix.de>
	5	* Copyright(C) 2008, Red Hat, Inc., Ingo Molnar
	6	*
	7	* Data type definitions, declarations, prototypes.
	8	*
	9	* Started by: Thomas Gleixner and Ingo Molnar
	10	*
	11	* For licencing details see kernel-base/COPYING
	12	*/
	13	#ifndef _LINUX_PERF_COUNTER_H
	14	#define _LINUX_PERF_COUNTER_H
	15
f3dfd265 PM	16	#include <linux/types.h>
f3dfd265 PM	17	#include <linux/ioctl.h>
9aaa131a	18	#include <asm/byteorder.h>
0793a61d TG	19
0793a61d TG	20	/*
9f66a381 IM	21	* User-space ABI bits:
	22	*/
	23
	24	/*
b8e83514	25	* hw_event.type
0793a61d	26	*/
b8e83514 PZ	27	enum perf_event_types {
	28	PERF_TYPE_HARDWARE = 0,
	29	PERF_TYPE_SOFTWARE = 1,
	30	PERF_TYPE_TRACEPOINT = 2,
	31
0793a61d	32	/*
b8e83514	33	* available TYPE space, raw is the max value.
0793a61d	34	*/
9f66a381	35
b8e83514 PZ	36	PERF_TYPE_RAW = 128,
b8e83514 PZ	37	};
6c594c21	38
b8e83514 PZ	39	/*
	40	* Generalized performance counter event types, used by the hw_event.event_id
	41	* parameter of the sys_perf_counter_open() syscall:
	42	*/
	43	enum hw_event_ids {
9f66a381	44	/*
b8e83514	45	* Common hardware events, generalized by the kernel:
9f66a381	46	*/
b8e83514 PZ	47	PERF_COUNT_CPU_CYCLES = 0,
	48	PERF_COUNT_INSTRUCTIONS = 1,
	49	PERF_COUNT_CACHE_REFERENCES = 2,
	50	PERF_COUNT_CACHE_MISSES = 3,
	51	PERF_COUNT_BRANCH_INSTRUCTIONS = 4,
	52	PERF_COUNT_BRANCH_MISSES = 5,
	53	PERF_COUNT_BUS_CYCLES = 6,
	54
	55	PERF_HW_EVENTS_MAX = 7,
	56	};
e077df4f	57
b8e83514 PZ	58	/*
	59	* Special "software" counters provided by the kernel, even if the hardware
	60	* does not support performance counters. These counters measure various
	61	* physical and sw events of the kernel (and allow the profiling of them as
	62	* well):
	63	*/
	64	enum sw_event_ids {
	65	PERF_COUNT_CPU_CLOCK = 0,
	66	PERF_COUNT_TASK_CLOCK = 1,
	67	PERF_COUNT_PAGE_FAULTS = 2,
	68	PERF_COUNT_CONTEXT_SWITCHES = 3,
	69	PERF_COUNT_CPU_MIGRATIONS = 4,
	70	PERF_COUNT_PAGE_FAULTS_MIN = 5,
	71	PERF_COUNT_PAGE_FAULTS_MAJ = 6,
	72
	73	PERF_SW_EVENTS_MAX = 7,
0793a61d TG	74	};
	75
	76	/*
	77	* IRQ-notification data record type:
	78	*/
9f66a381	79	enum perf_counter_record_type {
b8e83514 PZ	80	PERF_RECORD_SIMPLE = 0,
	81	PERF_RECORD_IRQ = 1,
	82	PERF_RECORD_GROUP = 2,
0793a61d TG	83	};
0793a61d TG	84
9f66a381 IM	85	/*
	86	* Hardware event to monitor via a performance monitoring counter:
	87	*/
	88	struct perf_counter_hw_event {
b8e83514	89	union {
9aaa131a	90	#ifndef __BIG_ENDIAN_BITFIELD
b8e83514 PZ	91	struct {
	92	__u64 event_id : 56,
	93	type : 8;
	94	};
	95	struct {
	96	__u64 raw_event_id : 63,
	97	raw_type : 1;
	98	};
9aaa131a PM	99	#else
	100	struct {
	101	__u64 type : 8,
	102	event_id : 56;
	103	};
	104	struct {
	105	__u64 raw_type : 1,
	106	raw_event_id : 63;
	107	};
	108	#endif /* __BIT_ENDIAN_BITFIELD */
b8e83514 PZ	109	__u64 event_config;
b8e83514 PZ	110	};
9f66a381	111
f3dfd265	112	__u64 irq_period;
2743a5b0 PM	113	__u64 record_type;
2743a5b0 PM	114	__u64 read_format;
9f66a381	115
2743a5b0	116	__u64 disabled : 1, /* off by default */
0475f9ea	117	nmi : 1, /* NMI sampling */
0475f9ea PM	118	inherit : 1, /* children inherit it */
	119	pinned : 1, /* must always be on PMU */
	120	exclusive : 1, /* only group on PMU */
	121	exclude_user : 1, /* don't count user */
	122	exclude_kernel : 1, /* ditto kernel */
	123	exclude_hv : 1, /* ditto hypervisor */
2743a5b0	124	exclude_idle : 1, /* don't count when idle */
0475f9ea	125
b8e83514	126	__reserved_1 : 55;
2743a5b0 PM	127
	128	__u32 extra_config_len;
	129	__u32 __reserved_4;
9f66a381	130
f3dfd265	131	__u64 __reserved_2;
2743a5b0	132	__u64 __reserved_3;
eab656ae TG	133	};
eab656ae TG	134
d859e29f PM	135	/*
	136	* Ioctls that can be done on a perf counter fd:
	137	*/
	138	#define PERF_COUNTER_IOC_ENABLE _IO('$', 0)
	139	#define PERF_COUNTER_IOC_DISABLE _IO('$', 1)
	140
f3dfd265	141	#ifdef __KERNEL__
9f66a381	142	/*
f3dfd265	143	* Kernel-internal data types and definitions:
9f66a381 IM	144	*/
9f66a381 IM	145
f3dfd265 PM	146	#ifdef CONFIG_PERF_COUNTERS
	147	# include <asm/perf_counter.h>
	148	#endif
	149
	150	#include <linux/list.h>
	151	#include <linux/mutex.h>
	152	#include <linux/rculist.h>
	153	#include <linux/rcupdate.h>
	154	#include <linux/spinlock.h>
d6d020e9	155	#include <linux/hrtimer.h>
f3dfd265 PM	156	#include <asm/atomic.h>
	157
	158	struct task_struct;
	159
0793a61d	160	/**
9f66a381	161	* struct hw_perf_counter - performance counter hardware details:
0793a61d TG	162	*/
0793a61d TG	163	struct hw_perf_counter {
ee06094f	164	#ifdef CONFIG_PERF_COUNTERS
d6d020e9 PZ	165	union {
	166	struct { /* hardware */
	167	u64 config;
	168	unsigned long config_base;
	169	unsigned long counter_base;
	170	int nmi;
	171	unsigned int idx;
	172	};
	173	union { /* software */
	174	atomic64_t count;
	175	struct hrtimer hrtimer;
	176	};
	177	};
ee06094f	178	atomic64_t prev_count;
9f66a381	179	u64 irq_period;
ee06094f IM	180	atomic64_t period_left;
ee06094f IM	181	#endif
0793a61d TG	182	};
	183
	184	/*
	185	* Hardcoded buffer length limit for now, for IRQ-fed events:
	186	*/
9f66a381	187	#define PERF_DATA_BUFLEN 2048
0793a61d TG	188
	189	/**
	190	* struct perf_data - performance counter IRQ data sampling ...
	191	*/
	192	struct perf_data {
9f66a381 IM	193	int len;
	194	int rd_idx;
	195	int overrun;
	196	u8 data[PERF_DATA_BUFLEN];
0793a61d TG	197	};
0793a61d TG	198
621a01ea IM	199	struct perf_counter;
	200
	201	/**
	202	* struct hw_perf_counter_ops - performance counter hw ops
	203	*/
	204	struct hw_perf_counter_ops {
95cdd2e7	205	int (enable) (struct perf_counter counter);
7671581f IM	206	void (disable) (struct perf_counter counter);
7671581f IM	207	void (read) (struct perf_counter counter);
621a01ea IM	208	};
621a01ea IM	209
6a930700 IM	210	/**
	211	* enum perf_counter_active_state - the states of a counter
	212	*/
	213	enum perf_counter_active_state {
3b6f9e5c	214	PERF_COUNTER_STATE_ERROR = -2,
6a930700 IM	215	PERF_COUNTER_STATE_OFF = -1,
	216	PERF_COUNTER_STATE_INACTIVE = 0,
	217	PERF_COUNTER_STATE_ACTIVE = 1,
	218	};
	219
9b51f66d IM	220	struct file;
9b51f66d IM	221
0793a61d TG	222	/**
	223	* struct perf_counter - performance counter kernel representation:
	224	*/
	225	struct perf_counter {
ee06094f	226	#ifdef CONFIG_PERF_COUNTERS
04289bb9	227	struct list_head list_entry;
592903cd	228	struct list_head event_entry;
04289bb9 IM	229	struct list_head sibling_list;
04289bb9 IM	230	struct perf_counter *group_leader;
5c92d124	231	const struct hw_perf_counter_ops *hw_ops;
04289bb9	232
6a930700	233	enum perf_counter_active_state state;
c07c99b6	234	enum perf_counter_active_state prev_state;
0793a61d	235	atomic64_t count;
ee06094f	236
9f66a381	237	struct perf_counter_hw_event hw_event;
0793a61d TG	238	struct hw_perf_counter hw;
	239
	240	struct perf_counter_context *ctx;
	241	struct task_struct *task;
9b51f66d	242	struct file *filp;
0793a61d	243
9b51f66d	244	struct perf_counter *parent;
d859e29f PM	245	struct list_head child_list;
d859e29f PM	246
0793a61d	247	/*
d859e29f	248	* Protect attach/detach and child_list:
0793a61d TG	249	*/
	250	struct mutex mutex;
	251
	252	int oncpu;
	253	int cpu;
	254
0793a61d TG	255	/* read() / irq related data */
	256	wait_queue_head_t waitq;
	257	/* optional: for NMIs */
	258	int wakeup_pending;
	259	struct perf_data *irqdata;
	260	struct perf_data *usrdata;
	261	struct perf_data data[2];
592903cd	262
e077df4f	263	void (destroy)(struct perf_counter );
592903cd	264	struct rcu_head rcu_head;
ee06094f	265	#endif
0793a61d TG	266	};
	267
	268	/**
	269	* struct perf_counter_context - counter context structure
	270	*
	271	* Used as a container for task counters and CPU counters as well:
	272	*/
	273	struct perf_counter_context {
	274	#ifdef CONFIG_PERF_COUNTERS
	275	/*
d859e29f PM	276	* Protect the states of the counters in the list,
d859e29f PM	277	* nr_active, and the list:
0793a61d TG	278	*/
0793a61d TG	279	spinlock_t lock;
d859e29f PM	280	/*
	281	* Protect the list of counters. Locking either mutex or lock
	282	* is sufficient to ensure the list doesn't change; to change
	283	* the list you need to lock both the mutex and the spinlock.
	284	*/
	285	struct mutex mutex;
04289bb9 IM	286
04289bb9 IM	287	struct list_head counter_list;
592903cd	288	struct list_head event_list;
0793a61d TG	289	int nr_counters;
0793a61d TG	290	int nr_active;
d859e29f	291	int is_active;
0793a61d TG	292	struct task_struct *task;
	293	#endif
	294	};
	295
	296	/**
	297	* struct perf_counter_cpu_context - per cpu counter context structure
	298	*/
	299	struct perf_cpu_context {
	300	struct perf_counter_context ctx;
	301	struct perf_counter_context *task_ctx;
	302	int active_oncpu;
	303	int max_pertask;
3b6f9e5c	304	int exclusive;
0793a61d TG	305	};
	306
	307	/*
	308	* Set by architecture code:
	309	*/
	310	extern int perf_max_counters;
	311
	312	#ifdef CONFIG_PERF_COUNTERS
5c92d124	313	extern const struct hw_perf_counter_ops *
621a01ea IM	314	hw_perf_counter_init(struct perf_counter *counter);
621a01ea IM	315
0793a61d TG	316	extern void perf_counter_task_sched_in(struct task_struct *task, int cpu);
	317	extern void perf_counter_task_sched_out(struct task_struct *task, int cpu);
	318	extern void perf_counter_task_tick(struct task_struct *task, int cpu);
9b51f66d IM	319	extern void perf_counter_init_task(struct task_struct *child);
9b51f66d IM	320	extern void perf_counter_exit_task(struct task_struct *child);
0793a61d TG	321	extern void perf_counter_notify(struct pt_regs *regs);
0793a61d TG	322	extern void perf_counter_print_debug(void);
1b023a96	323	extern void perf_counter_unthrottle(void);
01b2838c IM	324	extern u64 hw_perf_save_disable(void);
01b2838c IM	325	extern void hw_perf_restore(u64 ctrl);
1d1c7ddb IM	326	extern int perf_counter_task_disable(void);
1d1c7ddb IM	327	extern int perf_counter_task_enable(void);
3cbed429 PM	328	extern int hw_perf_group_sched_in(struct perf_counter *group_leader,
	329	struct perf_cpu_context *cpuctx,
	330	struct perf_counter_context *ctx, int cpu);
5c92d124	331
0322cd6e PZ	332	extern void perf_counter_output(struct perf_counter *counter,
0322cd6e PZ	333	int nmi, struct pt_regs *regs);
3b6f9e5c PM	334	/*
	335	* Return 1 for a software counter, 0 for a hardware counter
	336	*/
	337	static inline int is_software_counter(struct perf_counter *counter)
	338	{
b8e83514 PZ	339	return !counter->hw_event.raw_type &&
b8e83514 PZ	340	counter->hw_event.type != PERF_TYPE_HARDWARE;
3b6f9e5c PM	341	}
3b6f9e5c PM	342
b8e83514	343	extern void perf_swcounter_event(u32, u64, int, struct pt_regs *);
15dbf27c	344
0793a61d TG	345	#else
	346	static inline void
	347	perf_counter_task_sched_in(struct task_struct *task, int cpu) { }
	348	static inline void
	349	perf_counter_task_sched_out(struct task_struct *task, int cpu) { }
	350	static inline void
	351	perf_counter_task_tick(struct task_struct *task, int cpu) { }
9b51f66d IM	352	static inline void perf_counter_init_task(struct task_struct *child) { }
9b51f66d IM	353	static inline void perf_counter_exit_task(struct task_struct *child) { }
0793a61d TG	354	static inline void perf_counter_notify(struct pt_regs *regs) { }
0793a61d TG	355	static inline void perf_counter_print_debug(void) { }
1b023a96	356	static inline void perf_counter_unthrottle(void) { }
15dbf27c	357	static inline void hw_perf_restore(u64 ctrl) { }
01b2838c	358	static inline u64 hw_perf_save_disable(void) { return 0; }
1d1c7ddb IM	359	static inline int perf_counter_task_disable(void) { return -EINVAL; }
1d1c7ddb IM	360	static inline int perf_counter_task_enable(void) { return -EINVAL; }
15dbf27c	361
b8e83514	362	static inline void perf_swcounter_event(u32 event, u64 nr,
15dbf27c	363	int nmi, struct pt_regs *regs) { }
0793a61d TG	364	#endif
0793a61d TG	365
f3dfd265	366	#endif /* __KERNEL__ */
0793a61d	367	#endif /* _LINUX_PERF_COUNTER_H */