From 27295592c22e71bbd38110c302da8dbb43912a60 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Sun, 27 Dec 2009 21:37:01 -0200
Subject: perf session: Share the common trace sample_check routine as
 perf_session__has_traces
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Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1261957026-15580-5-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 tools/perf/util/session.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'tools/perf/util/session.c')

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 736d4fda9272..60eab8b3ff34 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -393,3 +393,14 @@ done:
 out_err:
 	return err;
 }
+
+int perf_session__has_traces(struct perf_session *self)
+{
+	if (!(self->sample_type & PERF_SAMPLE_RAW)) {
+		pr_err("No trace sample to read. Did you call perf record "
+		       "without -R?");
+		return -1;
+	}
+
+	return 0;
+}
-- 
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