linux-kernel - [tip:perf/core] perf data: Add support for setting ordered

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Message-ID: <tip-8fa46753fe2ca96b0fc175efb6c9ed5c001fb554@git.kernel.org>
Date:	Tue, 5 May 2015 19:57:34 -0700
From:	tip-bot for Jiri Olsa <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	bigeasy@...utronix.de, paulus@...ba.org, dsahern@...il.com,
	jolsa@...nel.org, jgalar@...icios.com, tzanussi@...il.com,
	tglx@...utronix.de, fweisbec@...il.com, a.p.zijlstra@...llo.nl,
	namhyung@...nel.org, mingo@...nel.org, hpa@...or.com,
	wangnan0@...wei.com, hekuang@...wei.com, acme@...hat.com,
	linux-kernel@...r.kernel.org
Subject: [tip:perf/core] perf data:
  Add support for setting ordered_events queue size

Commit-ID:  8fa46753fe2ca96b0fc175efb6c9ed5c001fb554
Gitweb:     http://git.kernel.org/tip/8fa46753fe2ca96b0fc175efb6c9ed5c001fb554
Author:     Jiri Olsa <jolsa@...nel.org>
AuthorDate: Sat, 18 Apr 2015 17:50:17 +0200
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Wed, 29 Apr 2015 10:37:48 -0300

perf data: Add support for setting ordered_events queue size

Adding support to limit the size of ordered_events queue, so we could
control allocation size of perf data files without proper finished round
events.

Reviewed-by: David Ahern <dsahern@...il.com>
Signed-off-by: Jiri Olsa <jolsa@...nel.org>
Acked-by: Namhyung Kim <namhyung@...nel.org>
Cc: David Ahern <dsahern@...il.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: He Kuang <hekuang@...wei.com>
Cc: Jeremie Galarneau <jgalar@...icios.com>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc: Tom Zanussi <tzanussi@...il.com>
Cc: Wang Nan <wangnan0@...wei.com>
Link: http://lkml.kernel.org/r/1429372220-6406-5-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/data-convert-bt.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/tools/perf/util/data-convert-bt.c b/tools/perf/util/data-convert-bt.c
index 4f942b3..b35c8d6 100644
--- a/tools/perf/util/data-convert-bt.c
+++ b/tools/perf/util/data-convert-bt.c
@@ -74,6 +74,9 @@ struct convert {
 
 	u64			events_size;
 	u64			events_count;
+
+	/* Ordered events configured queue size. */
+	u64			queue_size;
 };
 
 static int value_set(struct bt_ctf_field_type *type,
@@ -968,6 +971,18 @@ static int ctf_writer__flush_streams(struct ctf_writer *cw)
 	return ret;
 }
 
+static int convert__config(const char *var, const char *value, void *cb)
+{
+	struct convert *c = cb;
+
+	if (!strcmp(var, "convert.queue-size")) {
+		c->queue_size = perf_config_u64(var, value);
+		return 0;
+	}
+
+	return perf_default_config(var, value, cb);
+}
+
 int bt_convert__perf2ctf(const char *input, const char *path, bool force)
 {
 	struct perf_session *session;
@@ -994,6 +1009,8 @@ int bt_convert__perf2ctf(const char *input, const char *path, bool force)
 	struct ctf_writer *cw = &c.writer;
 	int err = -1;
 
+	perf_config(convert__config, &c);
+
 	/* CTF writer */
 	if (ctf_writer__init(cw, path))
 		return -1;
@@ -1003,6 +1020,11 @@ int bt_convert__perf2ctf(const char *input, const char *path, bool force)
 	if (!session)
 		goto free_writer;
 
+	if (c.queue_size) {
+		ordered_events__set_alloc_size(&session->ordered_events,
+					       c.queue_size);
+	}
+
 	/* CTF writer env/clock setup  */
 	if (ctf_writer__setup_env(cw, session))
 		goto free_session;
--
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