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Subject[PATCH 16/16] perf machine: Factor machine__find_thread to take tid argument
Date
From: Jiri Olsa <jolsa@redhat.com>

Forcing the code to always search thread by pid/tid pair.

The PID value will be needed in future to determine the process thread
leader for map groups sharing.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1394805606-25883-3-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/tests/dwarf-unwind.c | 2 +-
tools/perf/util/machine.c | 13 +++++++++----
tools/perf/util/machine.h | 3 ++-
3 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/tools/perf/tests/dwarf-unwind.c b/tools/perf/tests/dwarf-unwind.c
index f16ea2808a75..c059ee81c038 100644
--- a/tools/perf/tests/dwarf-unwind.c
+++ b/tools/perf/tests/dwarf-unwind.c
@@ -128,7 +128,7 @@ int test__dwarf_unwind(void)
if (verbose > 1)
machine__fprintf(machine, stderr);

- thread = machine__find_thread(machine, getpid());
+ thread = machine__find_thread(machine, getpid(), getpid());
if (!thread) {
pr_err("Could not get thread\n");
goto out;
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index a6799538069c..5cecd98c1bc0 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -327,9 +327,10 @@ struct thread *machine__findnew_thread(struct machine *machine, pid_t pid,
return __machine__findnew_thread(machine, pid, tid, true);
}

-struct thread *machine__find_thread(struct machine *machine, pid_t tid)
+struct thread *machine__find_thread(struct machine *machine, pid_t pid,
+ pid_t tid)
{
- return __machine__findnew_thread(machine, 0, tid, false);
+ return __machine__findnew_thread(machine, pid, tid, false);
}

int machine__process_comm_event(struct machine *machine, union perf_event *event,
@@ -1114,7 +1115,9 @@ static void machine__remove_thread(struct machine *machine, struct thread *th)
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 *thread = machine__find_thread(machine,
+ event->fork.pid,
+ event->fork.tid);
struct thread *parent = machine__findnew_thread(machine,
event->fork.ppid,
event->fork.ptid);
@@ -1140,7 +1143,9 @@ int machine__process_fork_event(struct machine *machine, 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);
+ struct thread *thread = machine__find_thread(machine,
+ event->fork.pid,
+ event->fork.tid);

if (dump_trace)
perf_event__fprintf_task(event, stdout);
diff --git a/tools/perf/util/machine.h b/tools/perf/util/machine.h
index 2e6c248c870f..c8c74a119398 100644
--- a/tools/perf/util/machine.h
+++ b/tools/perf/util/machine.h
@@ -41,7 +41,8 @@ struct map *machine__kernel_map(struct machine *machine, enum map_type type)
return machine->vmlinux_maps[type];
}

-struct thread *machine__find_thread(struct machine *machine, pid_t tid);
+struct thread *machine__find_thread(struct machine *machine, pid_t pid,
+ pid_t tid);

int machine__process_comm_event(struct machine *machine, union perf_event *event,
struct perf_sample *sample);
--
1.8.1.4


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