[deliverable/linux.git] / tools / perf / util / evsel.h

#ifndef __PERF_EVSEL_H
#define __PERF_EVSEL_H 1

#include <linux/list.h>
#include <stdbool.h>
#include <stddef.h>
#include <linux/perf_event.h>
#include <linux/types.h>
#include "xyarray.h"
#include "symbol.h"

struct perf_counts_values {
	union {
		struct {
			u64 val;
			u64 ena;
			u64 run;
		};
		u64 values[3];
	};
};

struct perf_counts {
	s8		   	  scaled;
	struct perf_counts_values aggr;
	struct perf_counts_values cpu[];
};

struct perf_evsel;

/*
 * Per fd, to map back from PERF_SAMPLE_ID to evsel, only used when there are
 * more than one entry in the evlist.
 */
struct perf_sample_id {
	struct hlist_node 	node;
	u64		 	id;
	struct perf_evsel	*evsel;
	int			idx;
	int			cpu;
	pid_t			tid;

	/* Holds total ID period value for PERF_SAMPLE_READ processing. */
	u64			period;
};

struct cgroup_sel;

/** struct perf_evsel - event selector
 *
 * @name - Can be set to retain the original event name passed by the user,
 *         so that when showing results in tools such as 'perf stat', we
 *         show the name used, not some alias.
 * @id_pos: the position of the event id (PERF_SAMPLE_ID or
 *          PERF_SAMPLE_IDENTIFIER) in a sample event i.e. in the array of
 *          struct sample_event
 * @is_pos: the position (counting backwards) of the event id (PERF_SAMPLE_ID or
 *          PERF_SAMPLE_IDENTIFIER) in a non-sample event i.e. if sample_id_all
 *          is used there is an id sample appended to non-sample events
 * @priv:   And what is in its containing unnamed union are tool specific
 */
struct perf_evsel {
	struct list_head	node;
	struct perf_event_attr	attr;
	char			*filter;
	struct xyarray		*fd;
	struct xyarray		*sample_id;
	u64			*id;
	struct perf_counts	*counts;
	struct perf_counts	*prev_raw_counts;
	int			idx;
	u32			ids;
	char			*name;
	double			scale;
	const char		*unit;
	struct event_format	*tp_format;
	union {
		void		*priv;
		off_t		id_offset;
		u64		db_id;
	};
	struct cgroup_sel	*cgrp;
	void			*handler;
	struct cpu_map		*cpus;
	unsigned int		sample_size;
	int			id_pos;
	int			is_pos;
	bool 			supported;
	bool 			needs_swap;
	bool			no_aux_samples;
	bool			immediate;
	bool			system_wide;
	bool			tracking;
	/* parse modifier helper */
	int			exclude_GH;
	int			nr_members;
	int			sample_read;
	struct perf_evsel	*leader;
	char			*group_name;
};

union u64_swap {
	u64 val64;
	u32 val32[2];
};

struct cpu_map;
struct target;
struct thread_map;
struct perf_evlist;
struct record_opts;

void perf_evsel__compute_deltas(struct perf_evsel *evsel, int cpu,
				struct perf_counts_values *count);

int perf_evsel__object_config(size_t object_size,
			      int (*init)(struct perf_evsel *evsel),
			      void (*fini)(struct perf_evsel *evsel));

struct perf_evsel *perf_evsel__new_idx(struct perf_event_attr *attr, int idx);

static inline struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr)
{
	return perf_evsel__new_idx(attr, 0);
}

struct perf_evsel *perf_evsel__newtp_idx(const char *sys, const char *name, int idx);

static inline struct perf_evsel *perf_evsel__newtp(const char *sys, const char *name)
{
	return perf_evsel__newtp_idx(sys, name, 0);
}

struct event_format *event_format__new(const char *sys, const char *name);

void perf_evsel__init(struct perf_evsel *evsel,
		      struct perf_event_attr *attr, int idx);
void perf_evsel__exit(struct perf_evsel *evsel);
void perf_evsel__delete(struct perf_evsel *evsel);

void perf_evsel__config(struct perf_evsel *evsel,
			struct record_opts *opts);

int __perf_evsel__sample_size(u64 sample_type);
void perf_evsel__calc_id_pos(struct perf_evsel *evsel);

bool perf_evsel__is_cache_op_valid(u8 type, u8 op);

#define PERF_EVSEL__MAX_ALIASES 8

extern const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX]
				       [PERF_EVSEL__MAX_ALIASES];
extern const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX]
					  [PERF_EVSEL__MAX_ALIASES];
extern const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX]
					      [PERF_EVSEL__MAX_ALIASES];
extern const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX];
extern const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX];
int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result,
					    char *bf, size_t size);
const char *perf_evsel__name(struct perf_evsel *evsel);

const char *perf_evsel__group_name(struct perf_evsel *evsel);
int perf_evsel__group_desc(struct perf_evsel *evsel, char *buf, size_t size);

int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads);
int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus);
void perf_evsel__reset_counts(struct perf_evsel *evsel, int ncpus);
void perf_evsel__free_counts(struct perf_evsel *evsel);
void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads);

void __perf_evsel__set_sample_bit(struct perf_evsel *evsel,
				  enum perf_event_sample_format bit);
void __perf_evsel__reset_sample_bit(struct perf_evsel *evsel,
				    enum perf_event_sample_format bit);

#define perf_evsel__set_sample_bit(evsel, bit) \
	__perf_evsel__set_sample_bit(evsel, PERF_SAMPLE_##bit)

#define perf_evsel__reset_sample_bit(evsel, bit) \
	__perf_evsel__reset_sample_bit(evsel, PERF_SAMPLE_##bit)

void perf_evsel__set_sample_id(struct perf_evsel *evsel,
			       bool use_sample_identifier);

int perf_evsel__set_filter(struct perf_evsel *evsel, int ncpus, int nthreads,
			   const char *filter);
int perf_evsel__enable(struct perf_evsel *evsel, int ncpus, int nthreads);

int perf_evsel__open_per_cpu(struct perf_evsel *evsel,
			     struct cpu_map *cpus);
int perf_evsel__open_per_thread(struct perf_evsel *evsel,
				struct thread_map *threads);
int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
		     struct thread_map *threads);
void perf_evsel__close(struct perf_evsel *evsel, int ncpus, int nthreads);

struct perf_sample;

void *perf_evsel__rawptr(struct perf_evsel *evsel, struct perf_sample *sample,
			 const char *name);
u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample,
		       const char *name);

static inline char *perf_evsel__strval(struct perf_evsel *evsel,
				       struct perf_sample *sample,
				       const char *name)
{
	return perf_evsel__rawptr(evsel, sample, name);
}

struct format_field;

struct format_field *perf_evsel__field(struct perf_evsel *evsel, const char *name);

#define perf_evsel__match(evsel, t, c)		\
	(evsel->attr.type == PERF_TYPE_##t &&	\
	 evsel->attr.config == PERF_COUNT_##c)

static inline bool perf_evsel__match2(struct perf_evsel *e1,
				      struct perf_evsel *e2)
{
	return (e1->attr.type == e2->attr.type) &&
	       (e1->attr.config == e2->attr.config);
}

#define perf_evsel__cmp(a, b)			\
	((a) &&					\
	 (b) &&					\
	 (a)->attr.type == (b)->attr.type &&	\
	 (a)->attr.config == (b)->attr.config)

int __perf_evsel__read_on_cpu(struct perf_evsel *evsel,
			      int cpu, int thread, bool scale);

/**
 * perf_evsel__read_on_cpu - Read out the results on a CPU and thread
 *
 * @evsel - event selector to read value
 * @cpu - CPU of interest
 * @thread - thread of interest
 */
static inline int perf_evsel__read_on_cpu(struct perf_evsel *evsel,
					  int cpu, int thread)
{
	return __perf_evsel__read_on_cpu(evsel, cpu, thread, false);
}

/**
 * perf_evsel__read_on_cpu_scaled - Read out the results on a CPU and thread, scaled
 *
 * @evsel - event selector to read value
 * @cpu - CPU of interest
 * @thread - thread of interest
 */
static inline int perf_evsel__read_on_cpu_scaled(struct perf_evsel *evsel,
						 int cpu, int thread)
{
	return __perf_evsel__read_on_cpu(evsel, cpu, thread, true);
}

int __perf_evsel__read(struct perf_evsel *evsel, int ncpus, int nthreads,
		       bool scale);

/**
 * perf_evsel__read - Read the aggregate results on all CPUs
 *
 * @evsel - event selector to read value
 * @ncpus - Number of cpus affected, from zero
 * @nthreads - Number of threads affected, from zero
 */
static inline int perf_evsel__read(struct perf_evsel *evsel,
				    int ncpus, int nthreads)
{
	return __perf_evsel__read(evsel, ncpus, nthreads, false);
}

/**
 * perf_evsel__read_scaled - Read the aggregate results on all CPUs, scaled
 *
 * @evsel - event selector to read value
 * @ncpus - Number of cpus affected, from zero
 * @nthreads - Number of threads affected, from zero
 */
static inline int perf_evsel__read_scaled(struct perf_evsel *evsel,
					  int ncpus, int nthreads)
{
	return __perf_evsel__read(evsel, ncpus, nthreads, true);
}

int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
			     struct perf_sample *sample);

static inline struct perf_evsel *perf_evsel__next(struct perf_evsel *evsel)
{
	return list_entry(evsel->node.next, struct perf_evsel, node);
}

static inline struct perf_evsel *perf_evsel__prev(struct perf_evsel *evsel)
{
	return list_entry(evsel->node.prev, struct perf_evsel, node);
}

/**
 * perf_evsel__is_group_leader - Return whether given evsel is a leader event
 *
 * @evsel - evsel selector to be tested
 *
 * Return %true if @evsel is a group leader or a stand-alone event
 */
static inline bool perf_evsel__is_group_leader(const struct perf_evsel *evsel)
{
	return evsel->leader == evsel;
}

/**
 * perf_evsel__is_group_event - Return whether given evsel is a group event
 *
 * @evsel - evsel selector to be tested
 *
 * Return %true iff event group view is enabled and @evsel is a actual group
 * leader which has other members in the group
 */
static inline bool perf_evsel__is_group_event(struct perf_evsel *evsel)
{
	if (!symbol_conf.event_group)
		return false;

	return perf_evsel__is_group_leader(evsel) && evsel->nr_members > 1;
}

/**
 * perf_evsel__is_function_event - Return whether given evsel is a function
 * trace event
 *
 * @evsel - evsel selector to be tested
 *
 * Return %true if event is function trace event
 */
static inline bool perf_evsel__is_function_event(struct perf_evsel *evsel)
{
#define FUNCTION_EVENT "ftrace:function"

	return evsel->name &&
	       !strncmp(FUNCTION_EVENT, evsel->name, sizeof(FUNCTION_EVENT));

#undef FUNCTION_EVENT
}

struct perf_attr_details {
	bool freq;
	bool verbose;
	bool event_group;
};

int perf_evsel__fprintf(struct perf_evsel *evsel,
			struct perf_attr_details *details, FILE *fp);

bool perf_evsel__fallback(struct perf_evsel *evsel, int err,
			  char *msg, size_t msgsize);
int perf_evsel__open_strerror(struct perf_evsel *evsel, struct target *target,
			      int err, char *msg, size_t size);

static inline int perf_evsel__group_idx(struct perf_evsel *evsel)
{
	return evsel->idx - evsel->leader->idx;
}

#define for_each_group_member(_evsel, _leader) 					\
for ((_evsel) = list_entry((_leader)->node.next, struct perf_evsel, node); 	\
     (_evsel) && (_evsel)->leader == (_leader);					\
     (_evsel) = list_entry((_evsel)->node.next, struct perf_evsel, node))

#endif /* __PERF_EVSEL_H */
Commit	Line	Data
69aad6f1 ACM	1	#ifndef __PERF_EVSEL_H
	2	#define __PERF_EVSEL_H 1
	3
	4	#include <linux/list.h>
c52b12ed	5	#include <stdbool.h>
07ac002f	6	#include <stddef.h>
d2709c7c	7	#include <linux/perf_event.h>
d944c4ee	8	#include <linux/types.h>
69aad6f1	9	#include "xyarray.h"
759ff497	10	#include "symbol.h"
d944c4ee	11
c52b12ed ACM	12	struct perf_counts_values {
	13	union {
	14	struct {
	15	u64 val;
	16	u64 ena;
	17	u64 run;
	18	};
	19	u64 values[3];
	20	};
	21	};
	22
	23	struct perf_counts {
	24	s8 scaled;
	25	struct perf_counts_values aggr;
	26	struct perf_counts_values cpu[];
	27	};
69aad6f1	28
70db7533 ACM	29	struct perf_evsel;
	30
	31	/*
	32	* Per fd, to map back from PERF_SAMPLE_ID to evsel, only used when there are
	33	* more than one entry in the evlist.
	34	*/
	35	struct perf_sample_id {
	36	struct hlist_node node;
	37	u64 id;
	38	struct perf_evsel *evsel;
3c659eed AH	39	int idx;
	40	int cpu;
	41	pid_t tid;
e4caec0d JO	42
	43	/* Holds total ID period value for PERF_SAMPLE_READ processing. */
	44	u64 period;
70db7533 ACM	45	};
70db7533 ACM	46
f14d5707 ACM	47	struct cgroup_sel;
f14d5707 ACM	48
f0c55bcf SE	49	/** struct perf_evsel - event selector
	50	*
	51	* @name - Can be set to retain the original event name passed by the user,
	52	* so that when showing results in tools such as 'perf stat', we
	53	* show the name used, not some alias.
75562573 AH	54	* @id_pos: the position of the event id (PERF_SAMPLE_ID or
	55	* PERF_SAMPLE_IDENTIFIER) in a sample event i.e. in the array of
	56	* struct sample_event
	57	* @is_pos: the position (counting backwards) of the event id (PERF_SAMPLE_ID or
	58	* PERF_SAMPLE_IDENTIFIER) in a non-sample event i.e. if sample_id_all
	59	* is used there is an id sample appended to non-sample events
0db15b1e	60	* @priv: And what is in its containing unnamed union are tool specific
f0c55bcf	61	*/
69aad6f1 ACM	62	struct perf_evsel {
	63	struct list_head node;
	64	struct perf_event_attr attr;
	65	char *filter;
	66	struct xyarray *fd;
a91e5431 ACM	67	struct xyarray *sample_id;
a91e5431 ACM	68	u64 *id;
c52b12ed	69	struct perf_counts *counts;
c7a79c47	70	struct perf_counts *prev_raw_counts;
69aad6f1	71	int idx;
f4d83436	72	u32 ids;
f0c55bcf	73	char *name;
410136f5 SE	74	double scale;
410136f5 SE	75	const char *unit;
fcf65bf1	76	struct event_format *tp_format;
a91e5431 ACM	77	union {
	78	void *priv;
	79	off_t id_offset;
0db15b1e	80	u64 db_id;
a91e5431	81	};
023695d9	82	struct cgroup_sel *cgrp;
744a9719	83	void *handler;
7ae92e74	84	struct cpu_map *cpus;
bde09467	85	unsigned int sample_size;
75562573 AH	86	int id_pos;
75562573 AH	87	int is_pos;
2cee77c4	88	bool supported;
0807d2d8	89	bool needs_swap;
6ff1ce76	90	bool no_aux_samples;
2afd2bcf	91	bool immediate;
bf8e8f4b	92	bool system_wide;
60b0896c	93	bool tracking;
f5b1135b JO	94	/* parse modifier helper */
f5b1135b JO	95	int exclude_GH;
97f63e4a	96	int nr_members;
3c176311	97	int sample_read;
6a4bb04c JO	98	struct perf_evsel *leader;
6a4bb04c JO	99	char *group_name;
69aad6f1 ACM	100	};
69aad6f1 ACM	101
88080ce7 BP	102	union u64_swap {
	103	u64 val64;
	104	u32 val32[2];
	105	};
	106
86bd5e86	107	struct cpu_map;
80b2210c	108	struct target;
86bd5e86	109	struct thread_map;
70082dd9	110	struct perf_evlist;
b4006796	111	struct record_opts;
86bd5e86	112
857a94a2 JO	113	void perf_evsel__compute_deltas(struct perf_evsel *evsel, int cpu,
	114	struct perf_counts_values *count);
	115
ce8ccff5 ACM	116	int perf_evsel__object_config(size_t object_size,
	117	int (init)(struct perf_evsel evsel),
	118	void (fini)(struct perf_evsel evsel));
	119
ef503831 ACM	120	struct perf_evsel perf_evsel__new_idx(struct perf_event_attr attr, int idx);
	121
	122	static inline struct perf_evsel perf_evsel__new(struct perf_event_attr attr)
	123	{
	124	return perf_evsel__new_idx(attr, 0);
	125	}
	126
	127	struct perf_evsel perf_evsel__newtp_idx(const char sys, const char *name, int idx);
	128
	129	static inline struct perf_evsel perf_evsel__newtp(const char sys, const char *name)
	130	{
	131	return perf_evsel__newtp_idx(sys, name, 0);
	132	}
201b7334 ACM	133
	134	struct event_format event_format__new(const char sys, const char *name);
	135
ef1d1af2 ACM	136	void perf_evsel__init(struct perf_evsel *evsel,
	137	struct perf_event_attr *attr, int idx);
	138	void perf_evsel__exit(struct perf_evsel *evsel);
69aad6f1 ACM	139	void perf_evsel__delete(struct perf_evsel *evsel);
69aad6f1 ACM	140
0f82ebc4	141	void perf_evsel__config(struct perf_evsel *evsel,
b4006796	142	struct record_opts *opts);
0f82ebc4	143
75562573 AH	144	int __perf_evsel__sample_size(u64 sample_type);
	145	void perf_evsel__calc_id_pos(struct perf_evsel *evsel);
	146
0b668bc9 ACM	147	bool perf_evsel__is_cache_op_valid(u8 type, u8 op);
	148
	149	#define PERF_EVSEL__MAX_ALIASES 8
	150
	151	extern const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX]
	152	[PERF_EVSEL__MAX_ALIASES];
	153	extern const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX]
	154	[PERF_EVSEL__MAX_ALIASES];
8ad7013b ACM	155	extern const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX]
	156	[PERF_EVSEL__MAX_ALIASES];
	157	extern const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX];
	158	extern const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX];
0b668bc9 ACM	159	int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result,
0b668bc9 ACM	160	char *bf, size_t size);
7289f83c	161	const char perf_evsel__name(struct perf_evsel evsel);
410136f5	162
717e263f NK	163	const char perf_evsel__group_name(struct perf_evsel evsel);
717e263f NK	164	int perf_evsel__group_desc(struct perf_evsel evsel, char buf, size_t size);
c410431c	165
70db7533	166	int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads);
c52b12ed	167	int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus);
a7e191c3	168	void perf_evsel__reset_counts(struct perf_evsel *evsel, int ncpus);
43f8e76e	169	void perf_evsel__free_counts(struct perf_evsel *evsel);
c52b12ed	170	void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads);
69aad6f1	171
7be5ebe8 ACM	172	void __perf_evsel__set_sample_bit(struct perf_evsel *evsel,
	173	enum perf_event_sample_format bit);
	174	void __perf_evsel__reset_sample_bit(struct perf_evsel *evsel,
	175	enum perf_event_sample_format bit);
	176
	177	#define perf_evsel__set_sample_bit(evsel, bit) \
	178	__perf_evsel__set_sample_bit(evsel, PERF_SAMPLE_##bit)
	179
	180	#define perf_evsel__reset_sample_bit(evsel, bit) \
	181	__perf_evsel__reset_sample_bit(evsel, PERF_SAMPLE_##bit)
	182
75562573 AH	183	void perf_evsel__set_sample_id(struct perf_evsel *evsel,
75562573 AH	184	bool use_sample_identifier);
7a5a5ca5	185
745cefc5 ACM	186	int perf_evsel__set_filter(struct perf_evsel *evsel, int ncpus, int nthreads,
745cefc5 ACM	187	const char *filter);
e2407bef	188	int perf_evsel__enable(struct perf_evsel *evsel, int ncpus, int nthreads);
745cefc5	189
f08199d3	190	int perf_evsel__open_per_cpu(struct perf_evsel *evsel,
6a4bb04c	191	struct cpu_map *cpus);
f08199d3	192	int perf_evsel__open_per_thread(struct perf_evsel *evsel,
6a4bb04c	193	struct thread_map *threads);
f08199d3	194	int perf_evsel__open(struct perf_evsel evsel, struct cpu_map cpus,
6a4bb04c	195	struct thread_map *threads);
727ab04e	196	void perf_evsel__close(struct perf_evsel *evsel, int ncpus, int nthreads);
48290609	197
5555ded4 ACM	198	struct perf_sample;
5555ded4 ACM	199
5d2074ea	200	void perf_evsel__rawptr(struct perf_evsel evsel, struct perf_sample *sample,
5555ded4 ACM	201	const char *name);
	202	u64 perf_evsel__intval(struct perf_evsel evsel, struct perf_sample sample,
	203	const char *name);
	204
5d2074ea ACM	205	static inline char perf_evsel__strval(struct perf_evsel evsel,
	206	struct perf_sample *sample,
	207	const char *name)
	208	{
	209	return perf_evsel__rawptr(evsel, sample, name);
	210	}
	211
efd2b924 ACM	212	struct format_field;
	213
	214	struct format_field perf_evsel__field(struct perf_evsel evsel, const char *name);
	215
daec78a0 ACM	216	#define perf_evsel__match(evsel, t, c) \
	217	(evsel->attr.type == PERF_TYPE_##t && \
	218	evsel->attr.config == PERF_COUNT_##c)
	219
863e451f JO	220	static inline bool perf_evsel__match2(struct perf_evsel *e1,
	221	struct perf_evsel *e2)
	222	{
	223	return (e1->attr.type == e2->attr.type) &&
	224	(e1->attr.config == e2->attr.config);
	225	}
	226
4cabc3d1 AK	227	#define perf_evsel__cmp(a, b) \
	228	((a) && \
	229	(b) && \
	230	(a)->attr.type == (b)->attr.type && \
	231	(a)->attr.config == (b)->attr.config)
	232
c52b12ed ACM	233	int __perf_evsel__read_on_cpu(struct perf_evsel *evsel,
	234	int cpu, int thread, bool scale);
	235
	236	/**
	237	* perf_evsel__read_on_cpu - Read out the results on a CPU and thread
	238	*
	239	* @evsel - event selector to read value
	240	* @cpu - CPU of interest
	241	* @thread - thread of interest
	242	*/
	243	static inline int perf_evsel__read_on_cpu(struct perf_evsel *evsel,
	244	int cpu, int thread)
	245	{
	246	return __perf_evsel__read_on_cpu(evsel, cpu, thread, false);
	247	}
	248
	249	/**
	250	* perf_evsel__read_on_cpu_scaled - Read out the results on a CPU and thread, scaled
	251	*
	252	* @evsel - event selector to read value
	253	* @cpu - CPU of interest
	254	* @thread - thread of interest
	255	*/
	256	static inline int perf_evsel__read_on_cpu_scaled(struct perf_evsel *evsel,
	257	int cpu, int thread)
	258	{
	259	return __perf_evsel__read_on_cpu(evsel, cpu, thread, true);
	260	}
	261
	262	int __perf_evsel__read(struct perf_evsel *evsel, int ncpus, int nthreads,
	263	bool scale);
	264
	265	/**
	266	* perf_evsel__read - Read the aggregate results on all CPUs
	267	*
	268	* @evsel - event selector to read value
	269	* @ncpus - Number of cpus affected, from zero
	270	* @nthreads - Number of threads affected, from zero
	271	*/
	272	static inline int perf_evsel__read(struct perf_evsel *evsel,
	273	int ncpus, int nthreads)
	274	{
	275	return __perf_evsel__read(evsel, ncpus, nthreads, false);
	276	}
	277
	278	/**
	279	* perf_evsel__read_scaled - Read the aggregate results on all CPUs, scaled
	280	*
	281	* @evsel - event selector to read value
	282	* @ncpus - Number of cpus affected, from zero
	283	* @nthreads - Number of threads affected, from zero
	284	*/
	285	static inline int perf_evsel__read_scaled(struct perf_evsel *evsel,
	286	int ncpus, int nthreads)
	287	{
	288	return __perf_evsel__read(evsel, ncpus, nthreads, true);
	289	}
	290
a3f698fe	291	int perf_evsel__parse_sample(struct perf_evsel evsel, union perf_event event,
0807d2d8	292	struct perf_sample *sample);
0c21f736 ACM	293
	294	static inline struct perf_evsel perf_evsel__next(struct perf_evsel evsel)
	295	{
	296	return list_entry(evsel->node.next, struct perf_evsel, node);
	297	}
07ac002f	298
d87fcb4a ACM	299	static inline struct perf_evsel perf_evsel__prev(struct perf_evsel evsel)
	300	{
	301	return list_entry(evsel->node.prev, struct perf_evsel, node);
	302	}
	303
759ff497 NK	304	/**
	305	* perf_evsel__is_group_leader - Return whether given evsel is a leader event
	306	*
	307	* @evsel - evsel selector to be tested
	308	*
	309	* Return %true if @evsel is a group leader or a stand-alone event
	310	*/
823254ed	311	static inline bool perf_evsel__is_group_leader(const struct perf_evsel *evsel)
07ac002f	312	{
823254ed	313	return evsel->leader == evsel;
07ac002f	314	}
0698aedd	315
759ff497 NK	316	/**
	317	* perf_evsel__is_group_event - Return whether given evsel is a group event
	318	*
	319	* @evsel - evsel selector to be tested
	320	*
	321	* Return %true iff event group view is enabled and @evsel is a actual group
	322	* leader which has other members in the group
	323	*/
	324	static inline bool perf_evsel__is_group_event(struct perf_evsel *evsel)
	325	{
	326	if (!symbol_conf.event_group)
	327	return false;
	328
	329	return perf_evsel__is_group_leader(evsel) && evsel->nr_members > 1;
	330	}
	331
6bedfab6 JO	332	/**
	333	* perf_evsel__is_function_event - Return whether given evsel is a function
	334	* trace event
	335	*
	336	* @evsel - evsel selector to be tested
	337	*
	338	* Return %true if event is function trace event
	339	*/
	340	static inline bool perf_evsel__is_function_event(struct perf_evsel *evsel)
	341	{
	342	#define FUNCTION_EVENT "ftrace:function"
	343
	344	return evsel->name &&
	345	!strncmp(FUNCTION_EVENT, evsel->name, sizeof(FUNCTION_EVENT));
	346
	347	#undef FUNCTION_EVENT
	348	}
	349
0698aedd ACM	350	struct perf_attr_details {
	351	bool freq;
	352	bool verbose;
e35ef355	353	bool event_group;
0698aedd ACM	354	};
	355
	356	int perf_evsel__fprintf(struct perf_evsel *evsel,
	357	struct perf_attr_details details, FILE fp);
c0a54341 ACM	358
	359	bool perf_evsel__fallback(struct perf_evsel *evsel, int err,
	360	char *msg, size_t msgsize);
602ad878	361	int perf_evsel__open_strerror(struct perf_evsel evsel, struct target target,
56e52e85	362	int err, char *msg, size_t size);
97f63e4a NK	363
	364	static inline int perf_evsel__group_idx(struct perf_evsel *evsel)
	365	{
	366	return evsel->idx - evsel->leader->idx;
	367	}
717e263f NK	368
	369	#define for_each_group_member(_evsel, _leader) \
	370	for ((_evsel) = list_entry((_leader)->node.next, struct perf_evsel, node); \
	371	(_evsel) && (_evsel)->leader == (_leader); \
	372	(_evsel) = list_entry((_evsel)->node.next, struct perf_evsel, node))
	373
69aad6f1	374	#endif /* __PERF_EVSEL_H */