Loop over all threads within a machine - including threads moved to the
dead threads list -- and invoked a function. This allows commands to run
some specific function on each thread (eg., dump statistics) yet hides
how the threads are maintained within the machine and
Signed-off-by: David Ahern <dsah...@gmail.com>
Cc: Arnaldo Carvalho de Melo <a...@infradead.org>
Cc: Ingo Molnar <mi...@kernel.org>
Cc: Frederic Weisbecker <fweis...@gmail.com>
Cc: Peter Zijlstra <a.p.zijls...@chello.nl>
Cc: Jiri Olsa <jo...@redhat.com>
Cc: Namhyung Kim <namhyung....@lge.com>
Cc: Stephane Eranian <eran...@google.com>
---
tools/perf/util/machine.c | 23 +++++++++++++++++++++++
tools/perf/util/machine.h | 4 ++++
2 files changed, 27 insertions(+)
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 40083df..d5055be 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -1376,3 +1376,26 @@ int machine__resolve_callchain(struct machine *machine,
sample);
}
+
+int machine__for_each_thread(struct machine *machine,
+ int (*fn)(struct thread *thread, void *p),
+ void *priv)
+{
+ struct rb_node *nd;
+ struct thread *thread;
+ int rc = 0;
+
+ for (nd = rb_first(&machine->threads); nd; nd = rb_next(nd)) {
+ thread = rb_entry(nd, struct thread, rb_node);
+ rc = fn(thread, priv);
+ if (rc != 0)
+ return rc;
+ }
+
+ list_for_each_entry(thread, &machine->dead_threads, node) {
+ rc = fn(thread, priv);
+ if (rc != 0)
+ return rc;
+ }
+ return rc;
+}
diff --git a/tools/perf/util/machine.h b/tools/perf/util/machine.h
index 58a6be1..dc9c57e 100644
--- a/tools/perf/util/machine.h
+++ b/tools/perf/util/machine.h
@@ -165,4 +165,8 @@ void machines__destroy_kernel_maps(struct machines
*machines);
size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp);
+int machine__for_each_thread(struct machine *machine,
+ int (*fn)(struct thread *thread, void *p),
+ void *priv);
+
#endif /* __PERF_MACHINE_H */
--
1.7.10.1
--
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