linux_dsm_epyc7002/tools/perf/util/event.h
Arnaldo Carvalho de Melo f62d3f0f45 perf event: No need to create a thread when handling PERF_RECORD_EXIT
When we were processing a PERF_RECORD_EXIT event we first used
machine__findnew_thread for both the thread exiting and for its parent,
only to use just the thread struct associated with the one exiting, and
to just delete it.

If it existed, i.e. not created at this very moment in
machine__findnew_thread, it will be moved to the machine->dead_threads
linked list, because we may have hist_entries pointing to it, but if it
was created just do be deleted, it will just sit there with no
references at all.

Use the new machine__find_thread() method so that if it is not there, we
don't create it.

As a bonus the parent thread will also not be created at this point.

Create process_fork() and process_exit() helpers to use this and make
the builtins use it instead of the generic process_task(), ditched by
this patch.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-z7n2y98ebjyrvmytaope4vdl@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-10-06 16:33:45 -03:00

226 lines
5.1 KiB
C

#ifndef __PERF_RECORD_H
#define __PERF_RECORD_H
#include <limits.h>
#include <stdio.h>
#include "../perf.h"
#include "map.h"
/*
* PERF_SAMPLE_IP | PERF_SAMPLE_TID | *
*/
struct ip_event {
struct perf_event_header header;
u64 ip;
u32 pid, tid;
unsigned char __more_data[];
};
struct mmap_event {
struct perf_event_header header;
u32 pid, tid;
u64 start;
u64 len;
u64 pgoff;
char filename[PATH_MAX];
};
struct comm_event {
struct perf_event_header header;
u32 pid, tid;
char comm[16];
};
struct fork_event {
struct perf_event_header header;
u32 pid, ppid;
u32 tid, ptid;
u64 time;
};
struct lost_event {
struct perf_event_header header;
u64 id;
u64 lost;
};
/*
* PERF_FORMAT_ENABLED | PERF_FORMAT_RUNNING | PERF_FORMAT_ID
*/
struct read_event {
struct perf_event_header header;
u32 pid, tid;
u64 value;
u64 time_enabled;
u64 time_running;
u64 id;
};
#define PERF_SAMPLE_MASK \
(PERF_SAMPLE_IP | PERF_SAMPLE_TID | \
PERF_SAMPLE_TIME | PERF_SAMPLE_ADDR | \
PERF_SAMPLE_ID | PERF_SAMPLE_STREAM_ID | \
PERF_SAMPLE_CPU | PERF_SAMPLE_PERIOD)
struct sample_event {
struct perf_event_header header;
u64 array[];
};
struct regs_dump {
u64 *regs;
};
struct stack_dump {
u16 offset;
u64 size;
char *data;
};
struct perf_sample {
u64 ip;
u32 pid, tid;
u64 time;
u64 addr;
u64 id;
u64 stream_id;
u64 period;
u32 cpu;
u32 raw_size;
void *raw_data;
struct ip_callchain *callchain;
struct branch_stack *branch_stack;
struct regs_dump user_regs;
struct stack_dump user_stack;
};
#define BUILD_ID_SIZE 20
struct build_id_event {
struct perf_event_header header;
pid_t pid;
u8 build_id[PERF_ALIGN(BUILD_ID_SIZE, sizeof(u64))];
char filename[];
};
enum perf_user_event_type { /* above any possible kernel type */
PERF_RECORD_USER_TYPE_START = 64,
PERF_RECORD_HEADER_ATTR = 64,
PERF_RECORD_HEADER_EVENT_TYPE = 65,
PERF_RECORD_HEADER_TRACING_DATA = 66,
PERF_RECORD_HEADER_BUILD_ID = 67,
PERF_RECORD_FINISHED_ROUND = 68,
PERF_RECORD_HEADER_MAX
};
struct attr_event {
struct perf_event_header header;
struct perf_event_attr attr;
u64 id[];
};
#define MAX_EVENT_NAME 64
struct perf_trace_event_type {
u64 event_id;
char name[MAX_EVENT_NAME];
};
struct event_type_event {
struct perf_event_header header;
struct perf_trace_event_type event_type;
};
struct tracing_data_event {
struct perf_event_header header;
u32 size;
};
union perf_event {
struct perf_event_header header;
struct ip_event ip;
struct mmap_event mmap;
struct comm_event comm;
struct fork_event fork;
struct lost_event lost;
struct read_event read;
struct sample_event sample;
struct attr_event attr;
struct event_type_event event_type;
struct tracing_data_event tracing_data;
struct build_id_event build_id;
};
void perf_event__print_totals(void);
struct perf_tool;
struct thread_map;
typedef int (*perf_event__handler_t)(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
struct machine *machine);
int perf_event__synthesize_thread_map(struct perf_tool *tool,
struct thread_map *threads,
perf_event__handler_t process,
struct machine *machine);
int perf_event__synthesize_threads(struct perf_tool *tool,
perf_event__handler_t process,
struct machine *machine);
int perf_event__synthesize_kernel_mmap(struct perf_tool *tool,
perf_event__handler_t process,
struct machine *machine,
const char *symbol_name);
int perf_event__synthesize_modules(struct perf_tool *tool,
perf_event__handler_t process,
struct machine *machine);
int perf_event__process_comm(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
struct machine *machine);
int perf_event__process_lost(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
struct machine *machine);
int perf_event__process_mmap(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
struct machine *machine);
int perf_event__process_fork(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
struct machine *machine);
int perf_event__process_exit(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
struct machine *machine);
int perf_event__process(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
struct machine *machine);
struct addr_location;
int perf_event__preprocess_sample(const union perf_event *self,
struct machine *machine,
struct addr_location *al,
struct perf_sample *sample,
symbol_filter_t filter);
const char *perf_event__name(unsigned int id);
int perf_event__synthesize_sample(union perf_event *event, u64 type,
const struct perf_sample *sample,
bool swapped);
size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp);
size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp);
size_t perf_event__fprintf_task(union perf_event *event, FILE *fp);
size_t perf_event__fprintf(union perf_event *event, FILE *fp);
#endif /* __PERF_RECORD_H */