From: David Ahern <dsahern@gmail.com>
To: acme@ghostprotocols.net, linux-kernel@vger.kernel.org
Cc: David Ahern <dsahern@gmail.com>,
Arnaldo Carvalho de Melo <acme@infradead.org>,
Ingo Molnar <mingo@kernel.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung.kim@lge.com>,
Stephane Eranian <eranian@google.com>
Subject: [PATCH 1/7] perf util: Add machine method to loop over threads and invoke handler
Date: Sat, 28 Sep 2013 13:12:58 -0600 [thread overview]
Message-ID: <1380395584-9025-2-git-send-email-dsahern@gmail.com> (raw)
In-Reply-To: <1380395584-9025-1-git-send-email-dsahern@gmail.com>
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 <dsahern@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Stephane Eranian <eranian@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
next prev parent reply other threads:[~2013-09-28 19:13 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-28 19:12 [PATCH 0/7] perf trace enhancements David Ahern
2013-09-28 19:12 ` David Ahern [this message]
2013-10-15 5:30 ` [tip:perf/core] perf machine: Add method to loop over threads and invoke handler tip-bot for David Ahern
2013-09-28 19:12 ` [PATCH 2/7] perf trace: Use new machine method to loop over threads David Ahern
2013-10-15 5:30 ` [tip:perf/core] " tip-bot for David Ahern
2013-09-28 19:13 ` [PATCH 3/7] perf trace: Fix comm resolution when reading events from file David Ahern
2013-10-15 5:30 ` [tip:perf/core] " tip-bot for David Ahern
2013-09-28 19:13 ` [PATCH 4/7] perf trace: Add record option David Ahern
2013-10-15 5:30 ` [tip:perf/core] " tip-bot for David Ahern
2013-09-28 19:13 ` [PATCH 5/7] perf util: Add priv variable to intlist David Ahern
2013-10-15 5:31 ` [tip:perf/core] perf intlist: Add priv member tip-bot for David Ahern
2013-09-28 19:13 ` [PATCH 6/7] perf util: Add findnew method to intlist David Ahern
2013-10-08 13:22 ` Arnaldo Carvalho de Melo
2013-09-28 19:13 ` [PATCH 7/7] perf trace: Add summary option to dump syscall statistics David Ahern
2013-10-08 1:44 ` [PATCH 0/7] perf trace enhancements David Ahern
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