Commit-ID: 35feee19f9fda7447f51073b5be3f6d082b508f5
Gitweb: http://git.kernel.org/tip/35feee19f9fda7447f51073b5be3f6d082b508f5
Author: David Ahern <dsahern@xxxxxxxxx>
AuthorDate: Sat, 28 Sep 2013 13:12:58 -0600
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Fri, 11 Oct 2013 12:17:51 -0300
perf machine: Add method to loop over threads and invoke handler
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.
Signed-off-by: David Ahern <dsahern@xxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung.kim@xxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1380395584-9025-2-git-send-email-dsahern@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
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 fc14f9b..901397a 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -1393,3 +1393,26 @@ 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 5150d5e..d44c09b 100644
--- a/tools/perf/util/machine.h
+++ b/tools/perf/util/machine.h
@@ -166,4 +166,8 @@ 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 */
--
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