[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 "cgroup.h"
#include "hist.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;

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

/** 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
 */
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;
	struct hists		hists;
	char			*name;
	double			scale;
	const char		*unit;
	struct event_format	*tp_format;
	union {
		void		*priv;
		off_t		id_offset;
	};
	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;
	/* 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];
};

#define hists_to_evsel(h) container_of(h, struct perf_evsel, hists)

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

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_fd(struct perf_evsel *evsel, int ncpus, int nthreads);
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_fd(struct perf_evsel *evsel);
void perf_evsel__free_id(struct perf_evsel *evsel);
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);
}

void hists__init(struct hists *hists);

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"
023695d9	10	#include "cgroup.h"
e248de33	11	#include "hist.h"
759ff497	12	#include "symbol.h"
d944c4ee	13
c52b12ed ACM	14	struct perf_counts_values {
	15	union {
	16	struct {
	17	u64 val;
	18	u64 ena;
	19	u64 run;
	20	};
	21	u64 values[3];
	22	};
	23	};
	24
	25	struct perf_counts {
	26	s8 scaled;
	27	struct perf_counts_values aggr;
	28	struct perf_counts_values cpu[];
	29	};
69aad6f1	30
70db7533 ACM	31	struct perf_evsel;
	32
	33	/*
	34	* Per fd, to map back from PERF_SAMPLE_ID to evsel, only used when there are
	35	* more than one entry in the evlist.
	36	*/
	37	struct perf_sample_id {
	38	struct hlist_node node;
	39	u64 id;
	40	struct perf_evsel *evsel;
e4caec0d JO	41
	42	/* Holds total ID period value for PERF_SAMPLE_READ processing. */
	43	u64 period;
70db7533 ACM	44	};
70db7533 ACM	45
f0c55bcf SE	46	/** struct perf_evsel - event selector
	47	*
	48	* @name - Can be set to retain the original event name passed by the user,
	49	* so that when showing results in tools such as 'perf stat', we
	50	* show the name used, not some alias.
75562573 AH	51	* @id_pos: the position of the event id (PERF_SAMPLE_ID or
	52	* PERF_SAMPLE_IDENTIFIER) in a sample event i.e. in the array of
	53	* struct sample_event
	54	* @is_pos: the position (counting backwards) of the event id (PERF_SAMPLE_ID or
	55	* PERF_SAMPLE_IDENTIFIER) in a non-sample event i.e. if sample_id_all
	56	* is used there is an id sample appended to non-sample events
f0c55bcf	57	*/
69aad6f1 ACM	58	struct perf_evsel {
	59	struct list_head node;
	60	struct perf_event_attr attr;
	61	char *filter;
	62	struct xyarray *fd;
a91e5431 ACM	63	struct xyarray *sample_id;
a91e5431 ACM	64	u64 *id;
c52b12ed	65	struct perf_counts *counts;
c7a79c47	66	struct perf_counts *prev_raw_counts;
69aad6f1	67	int idx;
f4d83436	68	u32 ids;
e248de33	69	struct hists hists;
f0c55bcf	70	char *name;
410136f5 SE	71	double scale;
410136f5 SE	72	const char *unit;
fcf65bf1	73	struct event_format *tp_format;
a91e5431 ACM	74	union {
	75	void *priv;
	76	off_t id_offset;
	77	};
023695d9	78	struct cgroup_sel *cgrp;
744a9719	79	void *handler;
7ae92e74	80	struct cpu_map *cpus;
bde09467	81	unsigned int sample_size;
75562573 AH	82	int id_pos;
75562573 AH	83	int is_pos;
2cee77c4	84	bool supported;
0807d2d8	85	bool needs_swap;
6ff1ce76	86	bool no_aux_samples;
2afd2bcf	87	bool immediate;
f5b1135b JO	88	/* parse modifier helper */
f5b1135b JO	89	int exclude_GH;
97f63e4a	90	int nr_members;
3c176311	91	int sample_read;
6a4bb04c JO	92	struct perf_evsel *leader;
6a4bb04c JO	93	char *group_name;
69aad6f1 ACM	94	};
69aad6f1 ACM	95
88080ce7 BP	96	union u64_swap {
	97	u64 val64;
	98	u32 val32[2];
	99	};
	100
29d720ed NK	101	#define hists_to_evsel(h) container_of(h, struct perf_evsel, hists)
29d720ed NK	102
86bd5e86 ACM	103	struct cpu_map;
86bd5e86 ACM	104	struct thread_map;
70082dd9	105	struct perf_evlist;
b4006796	106	struct record_opts;
86bd5e86	107
ef503831 ACM	108	struct perf_evsel perf_evsel__new_idx(struct perf_event_attr attr, int idx);
	109
	110	static inline struct perf_evsel perf_evsel__new(struct perf_event_attr attr)
	111	{
	112	return perf_evsel__new_idx(attr, 0);
	113	}
	114
	115	struct perf_evsel perf_evsel__newtp_idx(const char sys, const char *name, int idx);
	116
	117	static inline struct perf_evsel perf_evsel__newtp(const char sys, const char *name)
	118	{
	119	return perf_evsel__newtp_idx(sys, name, 0);
	120	}
201b7334 ACM	121
	122	struct event_format event_format__new(const char sys, const char *name);
	123
ef1d1af2 ACM	124	void perf_evsel__init(struct perf_evsel *evsel,
	125	struct perf_event_attr *attr, int idx);
	126	void perf_evsel__exit(struct perf_evsel *evsel);
69aad6f1 ACM	127	void perf_evsel__delete(struct perf_evsel *evsel);
69aad6f1 ACM	128
0f82ebc4	129	void perf_evsel__config(struct perf_evsel *evsel,
b4006796	130	struct record_opts *opts);
0f82ebc4	131
75562573 AH	132	int __perf_evsel__sample_size(u64 sample_type);
	133	void perf_evsel__calc_id_pos(struct perf_evsel *evsel);
	134
0b668bc9 ACM	135	bool perf_evsel__is_cache_op_valid(u8 type, u8 op);
	136
	137	#define PERF_EVSEL__MAX_ALIASES 8
	138
	139	extern const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX]
	140	[PERF_EVSEL__MAX_ALIASES];
	141	extern const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX]
	142	[PERF_EVSEL__MAX_ALIASES];
8ad7013b ACM	143	extern const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX]
	144	[PERF_EVSEL__MAX_ALIASES];
	145	extern const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX];
	146	extern const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX];
0b668bc9 ACM	147	int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result,
0b668bc9 ACM	148	char *bf, size_t size);
7289f83c	149	const char perf_evsel__name(struct perf_evsel evsel);
410136f5	150
717e263f NK	151	const char perf_evsel__group_name(struct perf_evsel evsel);
717e263f NK	152	int perf_evsel__group_desc(struct perf_evsel evsel, char buf, size_t size);
c410431c	153
69aad6f1	154	int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads);
70db7533	155	int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads);
c52b12ed	156	int perf_evsel__alloc_counts(struct perf_evsel *evsel, int ncpus);
a7e191c3	157	void perf_evsel__reset_counts(struct perf_evsel *evsel, int ncpus);
69aad6f1	158	void perf_evsel__free_fd(struct perf_evsel *evsel);
70db7533	159	void perf_evsel__free_id(struct perf_evsel *evsel);
43f8e76e	160	void perf_evsel__free_counts(struct perf_evsel *evsel);
c52b12ed	161	void perf_evsel__close_fd(struct perf_evsel *evsel, int ncpus, int nthreads);
69aad6f1	162
7be5ebe8 ACM	163	void __perf_evsel__set_sample_bit(struct perf_evsel *evsel,
	164	enum perf_event_sample_format bit);
	165	void __perf_evsel__reset_sample_bit(struct perf_evsel *evsel,
	166	enum perf_event_sample_format bit);
	167
	168	#define perf_evsel__set_sample_bit(evsel, bit) \
	169	__perf_evsel__set_sample_bit(evsel, PERF_SAMPLE_##bit)
	170
	171	#define perf_evsel__reset_sample_bit(evsel, bit) \
	172	__perf_evsel__reset_sample_bit(evsel, PERF_SAMPLE_##bit)
	173
75562573 AH	174	void perf_evsel__set_sample_id(struct perf_evsel *evsel,
75562573 AH	175	bool use_sample_identifier);
7a5a5ca5	176
745cefc5 ACM	177	int perf_evsel__set_filter(struct perf_evsel *evsel, int ncpus, int nthreads,
745cefc5 ACM	178	const char *filter);
e2407bef	179	int perf_evsel__enable(struct perf_evsel *evsel, int ncpus, int nthreads);
745cefc5	180
f08199d3	181	int perf_evsel__open_per_cpu(struct perf_evsel *evsel,
6a4bb04c	182	struct cpu_map *cpus);
f08199d3	183	int perf_evsel__open_per_thread(struct perf_evsel *evsel,
6a4bb04c	184	struct thread_map *threads);
f08199d3	185	int perf_evsel__open(struct perf_evsel evsel, struct cpu_map cpus,
6a4bb04c	186	struct thread_map *threads);
727ab04e	187	void perf_evsel__close(struct perf_evsel *evsel, int ncpus, int nthreads);
48290609	188
5555ded4 ACM	189	struct perf_sample;
5555ded4 ACM	190
5d2074ea	191	void perf_evsel__rawptr(struct perf_evsel evsel, struct perf_sample *sample,
5555ded4 ACM	192	const char *name);
	193	u64 perf_evsel__intval(struct perf_evsel evsel, struct perf_sample sample,
	194	const char *name);
	195
5d2074ea ACM	196	static inline char perf_evsel__strval(struct perf_evsel evsel,
	197	struct perf_sample *sample,
	198	const char *name)
	199	{
	200	return perf_evsel__rawptr(evsel, sample, name);
	201	}
	202
efd2b924 ACM	203	struct format_field;
	204
	205	struct format_field perf_evsel__field(struct perf_evsel evsel, const char *name);
	206
daec78a0 ACM	207	#define perf_evsel__match(evsel, t, c) \
	208	(evsel->attr.type == PERF_TYPE_##t && \
	209	evsel->attr.config == PERF_COUNT_##c)
	210
863e451f JO	211	static inline bool perf_evsel__match2(struct perf_evsel *e1,
	212	struct perf_evsel *e2)
	213	{
	214	return (e1->attr.type == e2->attr.type) &&
	215	(e1->attr.config == e2->attr.config);
	216	}
	217
4cabc3d1 AK	218	#define perf_evsel__cmp(a, b) \
	219	((a) && \
	220	(b) && \
	221	(a)->attr.type == (b)->attr.type && \
	222	(a)->attr.config == (b)->attr.config)
	223
c52b12ed ACM	224	int __perf_evsel__read_on_cpu(struct perf_evsel *evsel,
	225	int cpu, int thread, bool scale);
	226
	227	/**
	228	* perf_evsel__read_on_cpu - Read out the results on a CPU and thread
	229	*
	230	* @evsel - event selector to read value
	231	* @cpu - CPU of interest
	232	* @thread - thread of interest
	233	*/
	234	static inline int perf_evsel__read_on_cpu(struct perf_evsel *evsel,
	235	int cpu, int thread)
	236	{
	237	return __perf_evsel__read_on_cpu(evsel, cpu, thread, false);
	238	}
	239
	240	/**
	241	* perf_evsel__read_on_cpu_scaled - Read out the results on a CPU and thread, scaled
	242	*
	243	* @evsel - event selector to read value
	244	* @cpu - CPU of interest
	245	* @thread - thread of interest
	246	*/
	247	static inline int perf_evsel__read_on_cpu_scaled(struct perf_evsel *evsel,
	248	int cpu, int thread)
	249	{
	250	return __perf_evsel__read_on_cpu(evsel, cpu, thread, true);
	251	}
	252
	253	int __perf_evsel__read(struct perf_evsel *evsel, int ncpus, int nthreads,
	254	bool scale);
	255
	256	/**
	257	* perf_evsel__read - Read the aggregate results on all CPUs
	258	*
	259	* @evsel - event selector to read value
	260	* @ncpus - Number of cpus affected, from zero
	261	* @nthreads - Number of threads affected, from zero
	262	*/
	263	static inline int perf_evsel__read(struct perf_evsel *evsel,
	264	int ncpus, int nthreads)
	265	{
	266	return __perf_evsel__read(evsel, ncpus, nthreads, false);
	267	}
	268
	269	/**
	270	* perf_evsel__read_scaled - Read the aggregate results on all CPUs, scaled
	271	*
	272	* @evsel - event selector to read value
	273	* @ncpus - Number of cpus affected, from zero
	274	* @nthreads - Number of threads affected, from zero
	275	*/
	276	static inline int perf_evsel__read_scaled(struct perf_evsel *evsel,
	277	int ncpus, int nthreads)
	278	{
	279	return __perf_evsel__read(evsel, ncpus, nthreads, true);
	280	}
	281
4bf9ce1b JO	282	void hists__init(struct hists *hists);
4bf9ce1b JO	283
a3f698fe	284	int perf_evsel__parse_sample(struct perf_evsel evsel, union perf_event event,
0807d2d8	285	struct perf_sample *sample);
0c21f736 ACM	286
	287	static inline struct perf_evsel perf_evsel__next(struct perf_evsel evsel)
	288	{
	289	return list_entry(evsel->node.next, struct perf_evsel, node);
	290	}
07ac002f	291
d87fcb4a ACM	292	static inline struct perf_evsel perf_evsel__prev(struct perf_evsel evsel)
	293	{
	294	return list_entry(evsel->node.prev, struct perf_evsel, node);
	295	}
	296
759ff497 NK	297	/**
	298	* perf_evsel__is_group_leader - Return whether given evsel is a leader event
	299	*
	300	* @evsel - evsel selector to be tested
	301	*
	302	* Return %true if @evsel is a group leader or a stand-alone event
	303	*/
823254ed	304	static inline bool perf_evsel__is_group_leader(const struct perf_evsel *evsel)
07ac002f	305	{
823254ed	306	return evsel->leader == evsel;
07ac002f	307	}
0698aedd	308
759ff497 NK	309	/**
	310	* perf_evsel__is_group_event - Return whether given evsel is a group event
	311	*
	312	* @evsel - evsel selector to be tested
	313	*
	314	* Return %true iff event group view is enabled and @evsel is a actual group
	315	* leader which has other members in the group
	316	*/
	317	static inline bool perf_evsel__is_group_event(struct perf_evsel *evsel)
	318	{
	319	if (!symbol_conf.event_group)
	320	return false;
	321
	322	return perf_evsel__is_group_leader(evsel) && evsel->nr_members > 1;
	323	}
	324
6bedfab6 JO	325	/**
	326	* perf_evsel__is_function_event - Return whether given evsel is a function
	327	* trace event
	328	*
	329	* @evsel - evsel selector to be tested
	330	*
	331	* Return %true if event is function trace event
	332	*/
	333	static inline bool perf_evsel__is_function_event(struct perf_evsel *evsel)
	334	{
	335	#define FUNCTION_EVENT "ftrace:function"
	336
	337	return evsel->name &&
	338	!strncmp(FUNCTION_EVENT, evsel->name, sizeof(FUNCTION_EVENT));
	339
	340	#undef FUNCTION_EVENT
	341	}
	342
0698aedd ACM	343	struct perf_attr_details {
	344	bool freq;
	345	bool verbose;
e35ef355	346	bool event_group;
0698aedd ACM	347	};
	348
	349	int perf_evsel__fprintf(struct perf_evsel *evsel,
	350	struct perf_attr_details details, FILE fp);
c0a54341 ACM	351
	352	bool perf_evsel__fallback(struct perf_evsel *evsel, int err,
	353	char *msg, size_t msgsize);
602ad878	354	int perf_evsel__open_strerror(struct perf_evsel evsel, struct target target,
56e52e85	355	int err, char *msg, size_t size);
97f63e4a NK	356
	357	static inline int perf_evsel__group_idx(struct perf_evsel *evsel)
	358	{
	359	return evsel->idx - evsel->leader->idx;
	360	}
717e263f NK	361
	362	#define for_each_group_member(_evsel, _leader) \
	363	for ((_evsel) = list_entry((_leader)->node.next, struct perf_evsel, node); \
	364	(_evsel) && (_evsel)->leader == (_leader); \
	365	(_evsel) = list_entry((_evsel)->node.next, struct perf_evsel, node))
	366
69aad6f1	367	#endif /* __PERF_EVSEL_H */