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linux-next/tools/perf/util/evsel.h
Jin Yao 064b4e82aa perf tools: Add a 'percore' event qualifier 
Add a 'percore' event qualifier, like cpu/event=0,umask=0x3,percore=1/,
that sums up the event counts for both hardware threads in a core.

We can already do this with --per-core, but it's often useful to do
this together with other metrics that are collected per hardware thread.
So we need to support this per-core counting on a event level.

This can be implemented in only the user tool, no kernel support needed.

 v4:
 ---
 1. Add Arnaldo's patch which updates the documentation for
    this new qualifier.
 2. Rebase to latest perf/core branch

 v3:
 ---
 Simplify the code according to Jiri's comments.
 Before:
   "return term->val.percore ? true : false;"
 Now:
   "return term->val.percore;"

 v2:
 ---
 Change the qualifier name from 'coresum' to 'percore' according to
 comments from Jiri and Andi.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Tested-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1555077590-27664-2-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-16 14:17:24 -03:00

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/* SPDX-License-Identifier: GPL-2.0 */
#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_conf.h"
#include "cpumap.h"
#include "counts.h"
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;
/*
* The 'struct perf_evsel_config_term' is used to pass event
* specific configuration data to perf_evsel__config routine.
* It is allocated within event parsing and attached to
* perf_evsel::config_terms list head.
*/
enum term_type {
PERF_EVSEL__CONFIG_TERM_PERIOD,
PERF_EVSEL__CONFIG_TERM_FREQ,
PERF_EVSEL__CONFIG_TERM_TIME,
PERF_EVSEL__CONFIG_TERM_CALLGRAPH,
PERF_EVSEL__CONFIG_TERM_STACK_USER,
PERF_EVSEL__CONFIG_TERM_INHERIT,
PERF_EVSEL__CONFIG_TERM_MAX_STACK,
PERF_EVSEL__CONFIG_TERM_MAX_EVENTS,
PERF_EVSEL__CONFIG_TERM_OVERWRITE,
PERF_EVSEL__CONFIG_TERM_DRV_CFG,
PERF_EVSEL__CONFIG_TERM_BRANCH,
PERF_EVSEL__CONFIG_TERM_PERCORE,
};
struct perf_evsel_config_term {
struct list_head list;
enum term_type type;
union {
u64 period;
u64 freq;
bool time;
char *callgraph;
char *drv_cfg;
u64 stack_user;
int max_stack;
bool inherit;
bool overwrite;
char *branch;
unsigned long max_events;
bool percore;
} val;
bool weak;
};
struct perf_stat_evsel;
typedef int (perf_evsel__sb_cb_t)(union perf_event *event, void *data);
enum perf_tool_event {
PERF_TOOL_NONE = 0,
PERF_TOOL_DURATION_TIME = 1,
};
/** struct perf_evsel - event selector
*
* @evlist - evlist this evsel is in, if it is in one.
* @node - To insert it into evlist->entries or in other list_heads, say in
* the event parsing routines.
* @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_evlist *evlist;
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;
unsigned long max_events;
unsigned long nr_events_printed;
char *name;
double scale;
const char *unit;
struct tep_event *tp_format;
off_t id_offset;
struct perf_stat_evsel *stats;
void *priv;
u64 db_id;
struct cgroup *cgrp;
void *handler;
struct cpu_map *cpus;
struct cpu_map *own_cpus;
struct thread_map *threads;
unsigned int sample_size;
int id_pos;
int is_pos;
enum perf_tool_event tool_event;
bool uniquified_name;
bool snapshot;
bool supported;
bool needs_swap;
bool disabled;
bool no_aux_samples;
bool immediate;
bool system_wide;
bool tracking;
bool per_pkg;
bool precise_max;
bool ignore_missing_thread;
bool forced_leader;
bool use_uncore_alias;
/* parse modifier helper */
int exclude_GH;
int nr_members;
int sample_read;
unsigned long *per_pkg_mask;
struct perf_evsel *leader;
char *group_name;
bool cmdline_group_boundary;
struct list_head config_terms;
int bpf_fd;
bool auto_merge_stats;
bool merged_stat;
const char * metric_expr;
const char * metric_name;
struct perf_evsel **metric_events;
bool collect_stat;
bool weak_group;
bool percore;
const char *pmu_name;
struct {
perf_evsel__sb_cb_t *cb;
void *data;
} side_band;
};
union u64_swap {
u64 val64;
u32 val32[2];
};
struct perf_missing_features {
bool sample_id_all;
bool exclude_guest;
bool mmap2;
bool cloexec;
bool clockid;
bool clockid_wrong;
bool lbr_flags;
bool write_backward;
bool group_read;
bool ksymbol;
bool bpf_event;
};
extern struct perf_missing_features perf_missing_features;
struct cpu_map;
struct target;
struct thread_map;
struct record_opts;
static inline struct cpu_map *perf_evsel__cpus(struct perf_evsel *evsel)
{
return evsel->cpus;
}
static inline int perf_evsel__nr_cpus(struct perf_evsel *evsel)
{
return perf_evsel__cpus(evsel)->nr;
}
void perf_counts_values__scale(struct perf_counts_values *count,
bool scale, s8 *pscaled);
void perf_evsel__compute_deltas(struct perf_evsel *evsel, int cpu, int thread,
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);
/*
* Returns pointer with encoded error via <linux/err.h> interface.
*/
static inline struct perf_evsel *perf_evsel__newtp(const char *sys, const char *name)
{
return perf_evsel__newtp_idx(sys, name, 0);
}
struct perf_evsel *perf_evsel__new_cycles(bool precise);
struct tep_event *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);
struct callchain_param;
void perf_evsel__config(struct perf_evsel *evsel,
struct record_opts *opts,
struct callchain_param *callchain);
void perf_evsel__config_callchain(struct perf_evsel *evsel,
struct record_opts *opts,
struct callchain_param *callchain);
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);
void perf_evsel__close_fd(struct perf_evsel *evsel);
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, const char *filter);
int perf_evsel__append_tp_filter(struct perf_evsel *evsel, const char *filter);
int perf_evsel__append_addr_filter(struct perf_evsel *evsel,
const char *filter);
int perf_evsel__apply_filter(struct perf_evsel *evsel, const char *filter);
int perf_evsel__enable(struct perf_evsel *evsel);
int perf_evsel__disable(struct perf_evsel *evsel);
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);
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 tep_format_field;
u64 format_field__intval(struct tep_format_field *field, struct perf_sample *sample, bool needs_swap);
struct tep_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(struct perf_evsel *evsel, int cpu, int thread,
struct perf_counts_values *count);
int perf_evsel__read_counter(struct perf_evsel *evsel, int cpu, int thread);
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__parse_sample(struct perf_evsel *evsel, union perf_event *event,
struct perf_sample *sample);
int perf_evsel__parse_sample_timestamp(struct perf_evsel *evsel,
union perf_event *event,
u64 *timestamp);
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;
}
bool perf_evsel__is_function_event(struct perf_evsel *evsel);
static inline bool perf_evsel__is_bpf_output(struct perf_evsel *evsel)
{
return perf_evsel__match(evsel, SOFTWARE, SW_BPF_OUTPUT);
}
static inline bool perf_evsel__is_clock(struct perf_evsel *evsel)
{
return perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK);
}
struct perf_attr_details {
bool freq;
bool verbose;
bool event_group;
bool force;
bool trace_fields;
};
int perf_evsel__fprintf(struct perf_evsel *evsel,
struct perf_attr_details *details, FILE *fp);
#define EVSEL__PRINT_IP (1<<0)
#define EVSEL__PRINT_SYM (1<<1)
#define EVSEL__PRINT_DSO (1<<2)
#define EVSEL__PRINT_SYMOFFSET (1<<3)
#define EVSEL__PRINT_ONELINE (1<<4)
#define EVSEL__PRINT_SRCLINE (1<<5)
#define EVSEL__PRINT_UNKNOWN_AS_ADDR (1<<6)
#define EVSEL__PRINT_CALLCHAIN_ARROW (1<<7)
#define EVSEL__PRINT_SKIP_IGNORED (1<<8)
struct callchain_cursor;
int sample__fprintf_callchain(struct perf_sample *sample, int left_alignment,
unsigned int print_opts,
struct callchain_cursor *cursor, FILE *fp);
int sample__fprintf_sym(struct perf_sample *sample, struct addr_location *al,
int left_alignment, unsigned int print_opts,
struct callchain_cursor *cursor, 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;
}
/* Iterates group WITHOUT the leader. */
#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))
/* Iterates group WITH the leader. */
#define for_each_group_evsel(_evsel, _leader) \
for ((_evsel) = _leader; \
(_evsel) && (_evsel)->leader == (_leader); \
(_evsel) = list_entry((_evsel)->node.next, struct perf_evsel, node))
static inline bool perf_evsel__has_branch_callstack(const struct perf_evsel *evsel)
{
return evsel->attr.branch_sample_type & PERF_SAMPLE_BRANCH_CALL_STACK;
}
static inline bool evsel__has_callchain(const struct perf_evsel *evsel)
{
return (evsel->attr.sample_type & PERF_SAMPLE_CALLCHAIN) != 0;
}
typedef int (*attr__fprintf_f)(FILE *, const char *, const char *, void *);
int perf_event_attr__fprintf(FILE *fp, struct perf_event_attr *attr,
attr__fprintf_f attr__fprintf, void *priv);
struct perf_env *perf_evsel__env(struct perf_evsel *evsel);
int perf_evsel__store_ids(struct perf_evsel *evsel, struct perf_evlist *evlist);
#endif /* __PERF_EVSEL_H */
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