linux-kernel - [PATCH 3/4] perf tools: record min_timestamp of samples queue in ordered

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri,  1 Nov 2013 17:29:05 +0800
From:	Chenggang Qin <chenggang.qin@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Chenggang Qin <chenggang.qin@...il.com>,
	David Ahern <dsahern@...il.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Arjan van de Ven <arjan@...ux.intel.com>,
	Namhyung Kim <namhyung@...il.com>,
	Yanmin Zhang <yanmin.zhang@...el.com>,
	Wu Fengguang <fengguang.wu@...el.com>,
	Mike Galbraith <efault@....de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Chenggang Qin <chenggang.qcg@...bao.com>
Subject: [PATCH 3/4] perf tools: record min_timestamp of samples queue in ordered_samples

Add a field 'min_timestamp' in struct ordered_samples to record the minimial
timestamp of the samples in ordered_samples->samples.

Cc: David Ahern <dsahern@...il.com>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Cc: Arjan van de Ven <arjan@...ux.intel.com>
Cc: Namhyung Kim <namhyung@...il.com>
Cc: Yanmin Zhang <yanmin.zhang@...el.com>
Cc: Wu Fengguang <fengguang.wu@...el.com>
Cc: Mike Galbraith <efault@....de>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Chenggang Qin <chenggang.qcg@...bao.com>

---
 tools/perf/util/session.c |    3 +++
 tools/perf/util/session.h |    1 +
 2 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 193bb6a..4e9dd66 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -708,6 +708,9 @@ int perf_session_queue_event(struct perf_session *s, union perf_event *event,
 	new->file_offset = file_offset;
 	new->event = event;
 
+	if (list_empty(&os->samples) || os->min_timestamp > timestamp)
+		os->min_timestamp = timestamp;
+
 	__queue_event(new, s);
 
 	return 0;
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index c9a6c27..7d411b9 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -18,6 +18,7 @@ struct ordered_samples {
 	u64			last_flush;
 	u64			next_flush;
 	u64			max_timestamp;
+	u64			min_timestamp;
 	struct list_head	samples;
 	struct list_head	sample_cache;
 	struct list_head	to_free;
-- 
1.7.8.rc2.5.g815b

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/