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perf thread_map: Add thread_map user level event 

Adding the thread_map event to pass/store thread maps as data in
the pipe/perf.data.

Storing the thread ID along with the standard comm[16] thread name string.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1445784728-21732-4-git-send-email-jolsa@kernel.org
[ Renamed thread_map_data_event to thread_map_event_entry ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2015-10-25 15:51:19 +01:00 committed by Arnaldo Carvalho de Melo
parent 1843b4e057
commit 5f3339d2e8
4 changed files with 42 additions and 1 deletions
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1
tools/perf/util/event.c
View File

@ -37,6 +37,7 @@ static const char *perf_event__names[] = {
[PERF_RECORD_AUXTRACE_INFO] = "AUXTRACE_INFO",
[PERF_RECORD_AUXTRACE] = "AUXTRACE",
[PERF_RECORD_AUXTRACE_ERROR] = "AUXTRACE_ERROR",
[PERF_RECORD_THREAD_MAP] = "THREAD_MAP",
};
const char *perf_event__name(unsigned int id)

13
tools/perf/util/event.h
View File

@ -226,6 +226,7 @@ enum perf_user_event_type { /* above any possible kernel type */
PERF_RECORD_AUXTRACE_INFO = 70,
PERF_RECORD_AUXTRACE = 71,
PERF_RECORD_AUXTRACE_ERROR = 72,
PERF_RECORD_THREAD_MAP = 73,
PERF_RECORD_HEADER_MAX
};
@ -356,6 +357,17 @@ struct context_switch_event {
u32 next_prev_tid;
};
struct thread_map_event_entry {
u64 pid;
char comm[16];
};
struct thread_map_event {
struct perf_event_header header;
u64 nr;
struct thread_map_event_entry entries[];
};
union perf_event {
struct perf_event_header header;
struct mmap_event mmap;
@ -378,6 +390,7 @@ union perf_event {
struct aux_event aux;
struct itrace_start_event itrace_start;
struct context_switch_event context_switch;
struct thread_map_event thread_map;
};
void perf_event__print_totals(void);

26
tools/perf/util/session.c
View File

@ -296,6 +296,16 @@ int process_event_auxtrace_error_stub(struct perf_tool *tool __maybe_unused,
return 0;
}
static
int process_event_thread_map_stub(struct perf_tool *tool __maybe_unused,
union perf_event *event __maybe_unused,
struct perf_session *session __maybe_unused)
{
dump_printf(": unhandled!\n");
return 0;
}
void perf_tool__fill_defaults(struct perf_tool *tool)
{
if (tool->sample == NULL)
@ -346,6 +356,8 @@ void perf_tool__fill_defaults(struct perf_tool *tool)
tool->auxtrace = process_event_auxtrace_stub;
if (tool->auxtrace_error == NULL)
tool->auxtrace_error = process_event_auxtrace_error_stub;
if (tool->thread_map == NULL)
tool->thread_map = process_event_thread_map_stub;
}
static void swap_sample_id_all(union perf_event *event, void *data)
@ -616,6 +628,17 @@ static void perf_event__auxtrace_error_swap(union perf_event *event,
event->auxtrace_error.ip = bswap_64(event->auxtrace_error.ip);
}
static void perf_event__thread_map_swap(union perf_event *event,
bool sample_id_all __maybe_unused)
{
unsigned i;
event->thread_map.nr = bswap_64(event->thread_map.nr);
for (i = 0; i < event->thread_map.nr; i++)
event->thread_map.entries[i].pid = bswap_64(event->thread_map.entries[i].pid);
}
typedef void (*perf_event__swap_op)(union perf_event *event,
bool sample_id_all);
@ -643,6 +666,7 @@ static perf_event__swap_op perf_event__swap_ops[] = {
[PERF_RECORD_AUXTRACE_INFO] = perf_event__auxtrace_info_swap,
[PERF_RECORD_AUXTRACE] = perf_event__auxtrace_swap,
[PERF_RECORD_AUXTRACE_ERROR] = perf_event__auxtrace_error_swap,
[PERF_RECORD_THREAD_MAP] = perf_event__thread_map_swap,
[PERF_RECORD_HEADER_MAX] = NULL,
};
@ -1179,6 +1203,8 @@ static s64 perf_session__process_user_event(struct perf_session *session,
case PERF_RECORD_AUXTRACE_ERROR:
perf_session__auxtrace_error_inc(session, event);
return tool->auxtrace_error(tool, event, session);
case PERF_RECORD_THREAD_MAP:
return tool->thread_map(tool, event, session);
default:
return -EINVAL;
}

3
tools/perf/util/tool.h
View File

@ -55,7 +55,8 @@ struct perf_tool {
event_op2 build_id,
id_index,
auxtrace_info,
auxtrace_error;
auxtrace_error,
thread_map;
event_op3 auxtrace;
bool ordered_events;
bool ordering_requires_timestamps;