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perf tools: Add time argument on COMM setting

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This way we can later delimit a lifecycle for the COMM and map a hist to
a precise COMM:timeslice couple.

PERF_RECORD_COMM and PERF_RECORD_FORK events that don't have
PERF_SAMPLE_TIME samples can only send 0 value as a timestamp and thus
should overwrite any previous COMM on a given thread because there is no
sensible way to keep track of all the comms lifecycles in a thread
without time informations.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Tested-by: Jiri Olsa <jolsa@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-6tyow99vgmmtt9qwr2u2lqd7@git.kernel.org
[ Made it cope with PERF_RECORD_MMAP2 ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Frederic Weisbecker 2013-09-11 16:18:24 +02:00 committed by Arnaldo Carvalho de Melo
parent b9c5143a01
commit 162f0befda
10 changed files with 67 additions and 53 deletions
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2
tools/perf/builtin-top.c
View File

@ -856,7 +856,7 @@ static void perf_top__mmap_read_idx(struct perf_top *top, int idx)
&sample, machine);
} else if (event->header.type < PERF_RECORD_MAX) {
hists__inc_nr_events(&evsel->hists, event->header.type);
machine__process_event(machine, event);
machine__process_event(machine, event, &sample);
} else
++session->stats.nr_unknown_events;
next_event:

12
tools/perf/builtin-trace.c
View File

@ -1122,7 +1122,7 @@ static size_t trace__fprintf_entry_head(struct trace *trace, struct thread *thre
}
static int trace__process_event(struct trace *trace, struct machine *machine,
union perf_event *event)
union perf_event *event, struct perf_sample *sample)
{
int ret = 0;
@ -1130,9 +1130,9 @@ static int trace__process_event(struct trace *trace, struct machine *machine,
case PERF_RECORD_LOST:
color_fprintf(trace->output, PERF_COLOR_RED,
"LOST %" PRIu64 " events!\n", event->lost.lost);
ret = machine__process_lost_event(machine, event);
ret = machine__process_lost_event(machine, event, sample);
default:
ret = machine__process_event(machine, event);
ret = machine__process_event(machine, event, sample);
break;
}
@ -1141,11 +1141,11 @@ static int trace__process_event(struct trace *trace, struct machine *machine,
static int trace__tool_process(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample __maybe_unused,
struct perf_sample *sample,
struct machine *machine)
{
struct trace *trace = container_of(tool, struct trace, tool);
return trace__process_event(trace, machine, event);
return trace__process_event(trace, machine, event, sample);
}
static int trace__symbols_init(struct trace *trace, struct perf_evlist *evlist)
@ -1751,7 +1751,7 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
trace->base_time = sample.time;
if (type != PERF_RECORD_SAMPLE) {
trace__process_event(trace, trace->host, event);
trace__process_event(trace, trace->host, event, &sample);
continue;
}

2
tools/perf/tests/code-reading.c
View File

@ -276,7 +276,7 @@ static int process_event(struct machine *machine, struct perf_evlist *evlist,
return process_sample_event(machine, evlist, event, state);
if (event->header.type < PERF_RECORD_MAX)
return machine__process_event(machine, event);
return machine__process_event(machine, event, NULL);
return 0;
}

4
tools/perf/tests/hists_link.c
View File

@ -93,7 +93,7 @@ static struct machine *setup_fake_machine(struct machines *machines)
if (thread == NULL)
goto out;
thread__set_comm(thread, fake_threads[i].comm);
thread__set_comm(thread, fake_threads[i].comm, 0);
}
for (i = 0; i < ARRAY_SIZE(fake_mmap_info); i++) {
@ -110,7 +110,7 @@ static struct machine *setup_fake_machine(struct machines *machines)
strcpy(fake_mmap_event.mmap.filename,
fake_mmap_info[i].filename);
machine__process_mmap_event(machine, &fake_mmap_event);
machine__process_mmap_event(machine, &fake_mmap_event, NULL);
}
for (i = 0; i < ARRAY_SIZE(fake_symbols); i++) {

28
tools/perf/util/event.c
View File

@ -512,18 +512,18 @@ size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp)
int perf_event__process_comm(struct perf_tool *tool __maybe_unused,
union perf_event *event,
struct perf_sample *sample __maybe_unused,
struct perf_sample *sample,
struct machine *machine)
{
return machine__process_comm_event(machine, event);
return machine__process_comm_event(machine, event, sample);
}
int perf_event__process_lost(struct perf_tool *tool __maybe_unused,
union perf_event *event,
struct perf_sample *sample __maybe_unused,
struct perf_sample *sample,
struct machine *machine)
{
return machine__process_lost_event(machine, event);
return machine__process_lost_event(machine, event, sample);
}
size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp)
@ -546,18 +546,18 @@ size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp)
int perf_event__process_mmap(struct perf_tool *tool __maybe_unused,
union perf_event *event,
struct perf_sample *sample __maybe_unused,
struct perf_sample *sample,
struct machine *machine)
{
return machine__process_mmap_event(machine, event);
return machine__process_mmap_event(machine, event, sample);
}
int perf_event__process_mmap2(struct perf_tool *tool __maybe_unused,
union perf_event *event,
struct perf_sample *sample __maybe_unused,
struct perf_sample *sample,
struct machine *machine)
{
return machine__process_mmap2_event(machine, event);
return machine__process_mmap2_event(machine, event, sample);
}
size_t perf_event__fprintf_task(union perf_event *event, FILE *fp)
@ -569,18 +569,18 @@ size_t perf_event__fprintf_task(union perf_event *event, FILE *fp)
int perf_event__process_fork(struct perf_tool *tool __maybe_unused,
union perf_event *event,
struct perf_sample *sample __maybe_unused,
struct perf_sample *sample,
struct machine *machine)
{
return machine__process_fork_event(machine, event);
return machine__process_fork_event(machine, event, sample);
}
int perf_event__process_exit(struct perf_tool *tool __maybe_unused,
union perf_event *event,
struct perf_sample *sample __maybe_unused,
struct perf_sample *sample,
struct machine *machine)
{
return machine__process_exit_event(machine, event);
return machine__process_exit_event(machine, event, sample);
}
size_t perf_event__fprintf(union perf_event *event, FILE *fp)
@ -611,10 +611,10 @@ size_t perf_event__fprintf(union perf_event *event, FILE *fp)
int perf_event__process(struct perf_tool *tool __maybe_unused,
union perf_event *event,
struct perf_sample *sample __maybe_unused,
struct perf_sample *sample,
struct machine *machine)
{
return machine__process_event(machine, event);
return machine__process_event(machine, event, sample);
}
void thread__find_addr_map(struct thread *self,

39
tools/perf/util/machine.c
View File

@ -40,7 +40,7 @@ int machine__init(struct machine *machine, const char *root_dir, pid_t pid)
return -ENOMEM;
snprintf(comm, sizeof(comm), "[guest/%d]", pid);
thread__set_comm(thread, comm);
thread__set_comm(thread, comm, 0);
}
return 0;
@ -331,7 +331,8 @@ struct thread *machine__find_thread(struct machine *machine, pid_t tid)
return __machine__findnew_thread(machine, 0, tid, false);
}
int machine__process_comm_event(struct machine *machine, union perf_event *event)
int machine__process_comm_event(struct machine *machine, union perf_event *event,
struct perf_sample *sample)
{
struct thread *thread = machine__findnew_thread(machine,
event->comm.pid,
@ -340,7 +341,7 @@ int machine__process_comm_event(struct machine *machine, union perf_event *event
if (dump_trace)
perf_event__fprintf_comm(event, stdout);
if (thread == NULL || thread__set_comm(thread, event->comm.comm)) {
if (thread == NULL || thread__set_comm(thread, event->comm.comm, sample->time)) {
dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
return -1;
}
@ -349,7 +350,7 @@ int machine__process_comm_event(struct machine *machine, union perf_event *event
}
int machine__process_lost_event(struct machine *machine __maybe_unused,
union perf_event *event)
union perf_event *event, struct perf_sample *sample __maybe_unused)
{
dump_printf(": id:%" PRIu64 ": lost:%" PRIu64 "\n",
event->lost.id, event->lost.lost);
@ -984,7 +985,8 @@ static int machine__process_kernel_mmap_event(struct machine *machine,
}
int machine__process_mmap2_event(struct machine *machine,
union perf_event *event)
union perf_event *event,
struct perf_sample *sample __maybe_unused)
{
u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
struct thread *thread;
@ -1031,7 +1033,8 @@ int machine__process_mmap2_event(struct machine *machine,
return 0;
}
int machine__process_mmap_event(struct machine *machine, union perf_event *event)
int machine__process_mmap_event(struct machine *machine, union perf_event *event,
struct perf_sample *sample __maybe_unused)
{
u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
struct thread *thread;
@ -1088,7 +1091,8 @@ static void machine__remove_thread(struct machine *machine, struct thread *th)
list_add_tail(&th->node, &machine->dead_threads);
}
int machine__process_fork_event(struct machine *machine, union perf_event *event)
int machine__process_fork_event(struct machine *machine, union perf_event *event,
struct perf_sample *sample)
{
struct thread *thread = machine__find_thread(machine, event->fork.tid);
struct thread *parent = machine__findnew_thread(machine,
@ -1105,7 +1109,7 @@ int machine__process_fork_event(struct machine *machine, union perf_event *event
perf_event__fprintf_task(event, stdout);
if (thread == NULL || parent == NULL ||
thread__fork(thread, parent) < 0) {
thread__fork(thread, parent, sample->time) < 0) {
dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n");
return -1;
}
@ -1113,8 +1117,8 @@ int machine__process_fork_event(struct machine *machine, union perf_event *event
return 0;
}
int machine__process_exit_event(struct machine *machine __maybe_unused,
union perf_event *event)
int machine__process_exit_event(struct machine *machine, union perf_event *event,
struct perf_sample *sample __maybe_unused)
{
struct thread *thread = machine__find_thread(machine, event->fork.tid);
@ -1127,23 +1131,24 @@ int machine__process_exit_event(struct machine *machine __maybe_unused,
return 0;
}
int machine__process_event(struct machine *machine, union perf_event *event)
int machine__process_event(struct machine *machine, union perf_event *event,
struct perf_sample *sample)
{
int ret;
switch (event->header.type) {
case PERF_RECORD_COMM:
ret = machine__process_comm_event(machine, event); break;
ret = machine__process_comm_event(machine, event, sample); break;
case PERF_RECORD_MMAP:
ret = machine__process_mmap_event(machine, event); break;
ret = machine__process_mmap_event(machine, event, sample); break;
case PERF_RECORD_MMAP2:
ret = machine__process_mmap2_event(machine, event); break;
ret = machine__process_mmap2_event(machine, event, sample); break;
case PERF_RECORD_FORK:
ret = machine__process_fork_event(machine, event); break;
ret = machine__process_fork_event(machine, event, sample); break;
case PERF_RECORD_EXIT:
ret = machine__process_exit_event(machine, event); break;
ret = machine__process_exit_event(machine, event, sample); break;
case PERF_RECORD_LOST:
ret = machine__process_lost_event(machine, event); break;
ret = machine__process_lost_event(machine, event, sample); break;
default:
ret = -1;
break;

21
tools/perf/util/machine.h
View File

@ -40,13 +40,20 @@ struct map *machine__kernel_map(struct machine *machine, enum map_type type)
struct thread *machine__find_thread(struct machine *machine, pid_t tid);
int machine__process_comm_event(struct machine *machine, union perf_event *event);
int machine__process_exit_event(struct machine *machine, union perf_event *event);
int machine__process_fork_event(struct machine *machine, union perf_event *event);
int machine__process_lost_event(struct machine *machine, union perf_event *event);
int machine__process_mmap_event(struct machine *machine, union perf_event *event);
int machine__process_mmap2_event(struct machine *machine, union perf_event *event);
int machine__process_event(struct machine *machine, union perf_event *event);
int machine__process_comm_event(struct machine *machine, union perf_event *event,
struct perf_sample *sample);
int machine__process_exit_event(struct machine *machine, union perf_event *event,
struct perf_sample *sample);
int machine__process_fork_event(struct machine *machine, union perf_event *event,
struct perf_sample *sample);
int machine__process_lost_event(struct machine *machine, union perf_event *event,
struct perf_sample *sample);
int machine__process_mmap_event(struct machine *machine, union perf_event *event,
struct perf_sample *sample);
int machine__process_mmap2_event(struct machine *machine, union perf_event *event,
struct perf_sample *sample);
int machine__process_event(struct machine *machine, union perf_event *event,
struct perf_sample *sample);
typedef void (*machine__process_t)(struct machine *machine, void *data);

2
tools/perf/util/session.c
View File

@ -1100,7 +1100,7 @@ static struct thread *perf_session__register_idle_thread(struct perf_session *se
{
struct thread *thread = perf_session__findnew(self, 0);
if (thread == NULL || thread__set_comm(thread, "swapper")) {
if (thread == NULL || thread__set_comm(thread, "swapper", 0)) {
pr_err("problem inserting idle task.\n");
thread = NULL;
}

6
tools/perf/util/thread.c
View File

@ -31,7 +31,8 @@ void thread__delete(struct thread *thread)
free(thread);
}
int thread__set_comm(struct thread *thread, const char *comm)
int thread__set_comm(struct thread *thread, const char *comm,
u64 timestamp __maybe_unused)
{
int err;
@ -73,7 +74,8 @@ void thread__insert_map(struct thread *thread, struct map *map)
map_groups__insert(&thread->mg, map);
}
int thread__fork(struct thread *thread, struct thread *parent)
int thread__fork(struct thread *thread, struct thread *parent,
u64 timestamp __maybe_unused)
{
int i;

4
tools/perf/util/thread.h
View File

@ -33,11 +33,11 @@ static inline void thread__exited(struct thread *thread)
thread->dead = true;
}
int thread__set_comm(struct thread *self, const char *comm);
int thread__set_comm(struct thread *thread, const char *comm, u64 timestamp);
int thread__comm_len(struct thread *self);
const char *thread__comm_str(const struct thread *thread);
void thread__insert_map(struct thread *self, struct map *map);
int thread__fork(struct thread *self, struct thread *parent);
int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp);
size_t thread__fprintf(struct thread *thread, FILE *fp);
static inline struct map *thread__find_map(struct thread *self,