From 079136a37039570209031e71304b5a2957cfab68 Mon Sep 17 00:00:00 2001
From: Frederic Weisbecker <fweisbec@gmail.com>
Date: Sat, 24 Apr 2010 01:55:09 +0200
Subject: [PATCH] --- yaml --- r: 191247 b: refs/heads/master c:
 e1889d75aff0c3786bc53aeb7d9eaca0691c19c5 h: refs/heads/master i:   191245:
 d2604debb9383bf7e935d4ff57a55d333e64593d   191243:
 01b2cef75e565ef792145d1f20774ecf6b92c32f   191239:
 ea5af318605fcf1816b2e3a706745eee19f991b2   191231:
 296ac94f2f54879f2eef138c0d784662292c2c68 v: v3

---
 [refs]                           |  2 +-
 trunk/tools/perf/builtin-trace.c | 12 ++++++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 1134d446bc2e..847fcf26c4fa 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9df9bbba9f7e2e4ffdc51bbbfa524b67691321d2
+refs/heads/master: e1889d75aff0c3786bc53aeb7d9eaca0691c19c5
diff --git a/trunk/tools/perf/builtin-trace.c b/trunk/tools/perf/builtin-trace.c
index 1d034f6fa28a..77f556f7604c 100644
--- a/trunk/tools/perf/builtin-trace.c
+++ b/trunk/tools/perf/builtin-trace.c
@@ -11,6 +11,8 @@
 
 static char const		*script_name;
 static char const		*generate_script_lang;
+static bool			debug_ordering;
+static u64			last_timestamp;
 
 static int default_start_script(const char *script __unused,
 				int argc __unused,
@@ -87,6 +89,14 @@ static int process_sample_event(event_t *event, struct perf_session *session)
 	}
 
 	if (session->sample_type & PERF_SAMPLE_RAW) {
+		if (debug_ordering) {
+			if (data.time < last_timestamp) {
+				pr_err("Samples misordered, previous: %llu "
+					"this: %llu\n", last_timestamp,
+					data.time);
+			}
+			last_timestamp = data.time;
+		}
 		/*
 		 * FIXME: better resolve from pid from the struct trace_entry
 		 * field, although it should be the same than this perf
@@ -532,6 +542,8 @@ static const struct option options[] = {
 		   "generate perf-trace.xx script in specified language"),
 	OPT_STRING('i', "input", &input_name, "file",
 		    "input file name"),
+	OPT_BOOLEAN('d', "debug-ordering", &debug_ordering,
+		   "check that samples time ordering is monotonic"),
 
 	OPT_END()
 };