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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
Download Patch File Download Diff File Expand all files Collapse all files

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 @@ out_problem:
}
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 @@ out_problem:
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,