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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

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;