perf machine: Add method to loop over threads and invoke handler - kernel/git/tip/tip.git (original) (raw)
author | David Ahern dsahern@gmail.com | 2013-09-28 13:12:58 -0600 |
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committer | Arnaldo Carvalho de Melo acme@redhat.com | 2013-10-11 12:17:51 -0300 |
commit | 35feee19f9fda7447f51073b5be3f6d082b508f5 (patch) | |
tree | 53a42e1713716a05659a7f4866b3141f10194927 | |
parent | 5e2485b1a2813faa6b80007c653f8bbbed9457ee (diff) | |
download | tip-35feee19f9fda7447f51073b5be3f6d082b508f5.tar.gz |
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@gmail.com Cc: Frederic Weisbecker fweisbec@gmail.com Cc: Ingo Molnar mingo@kernel.org Cc: Jiri Olsa jolsa@redhat.com Cc: Namhyung Kim namhyung.kim@lge.com Cc: Peter Zijlstra a.p.zijlstra@chello.nl Cc: Stephane Eranian eranian@google.com Link: http://lkml.kernel.org/r/1380395584-9025-2-git-send-email-dsahern@gmail.comSigned-off-by: Arnaldo Carvalho de Melo acme@redhat.com
-rw-r--r-- | tools/perf/util/machine.c | 23 |
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-rw-r--r-- | tools/perf/util/machine.h | 4 |
2 files changed, 27 insertions, 0 deletions
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index fc14f9bf82c8ce..901397ae82bee9 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 5150d5e1db6778..d44c09bdc45ea4 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 */