From: Adrian Hunter <adrian.hun...@intel.com>
Add a function to get the pid from the tid.
This is needed when using the sched_switch
tracepoint to follow object code execution.
sched_switch identifies the thread but, to
find the process mmaps, we need the process
pid.
Signed-off-by: Adrian Hunter <adrian.hun...@intel.com>
---
tools/perf/util/machine.c | 10 ++++++++++
tools/perf/util/machine.h | 2 ++
2 files changed, 12 insertions(+)
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index bac817a..55f3608 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -1402,3 +1402,13 @@ int __machine__synthesize_threads(struct machine
*machine, struct perf_tool *too
/* command specified */
return 0;
}
+
+pid_t machine__get_thread_pid(struct machine *machine, pid_t tid)
+{
+ struct thread *thread = machine__find_thread(machine, tid);
+
+ if (!thread)
+ return -1;
+
+ return thread->pid_;
+}
diff --git a/tools/perf/util/machine.h b/tools/perf/util/machine.h
index 4771330..b800a5a 100644
--- a/tools/perf/util/machine.h
+++ b/tools/perf/util/machine.h
@@ -190,4 +190,6 @@ int machine__synthesize_threads(struct machine *machine,
struct target *target,
perf_event__process, data_mmap);
}
+pid_t machine__get_thread_pid(struct machine *machine, pid_t tid);
+
#endif /* __PERF_MACHINE_H */
--
1.8.5.1
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