perf tools: Add time argument on COMM setting
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>
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 7a2842e..c26b353 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -512,18 +512,18 @@
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 @@
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 @@
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 @@
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,
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index ea93425..ce034c1 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -40,7 +40,7 @@
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 @@
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 @@
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_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 @@
}
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 @@
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 @@
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 @@
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 @@
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 @@
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;
diff --git a/tools/perf/util/machine.h b/tools/perf/util/machine.h
index 4c1f5d5..2389ba8 100644
--- a/tools/perf/util/machine.h
+++ b/tools/perf/util/machine.h
@@ -40,13 +40,20 @@
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);
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 4ba7b54..3c1b301 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1100,7 +1100,7 @@
{
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;
}
diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index 5676007..0ea73fe 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -31,7 +31,8 @@
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 @@
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;
diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h
index 6561ad2..4e97242 100644
--- a/tools/perf/util/thread.h
+++ b/tools/perf/util/thread.h
@@ -33,11 +33,11 @@
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,