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authorArnaldo Carvalho de Melo <acme@redhat.com>2009-11-21 14:31:26 -0200
committerIngo Molnar <mingo@elte.hu>2009-11-21 17:45:59 +0100
commite25613683bd5c46d3e8c8ae6416dccc9f357dcdc (patch)
treea78a494c84d705d8505bd45e80fe7375943bb76e /tools/perf/util/trace-event-read.c
parentc12e15e71d4b32da045e798ffd21cbb6197d1c65 (diff)
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perf trace: Read_tracing_data should die() another day
It better propagate errors, also if we do a simple: [root@doppio linux-2.6-tip]# perf record -R -a -f sleep 3s ; perf trace [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.182 MB perf.data (~7972 samples) ] Fatal: not an trace data file [root@doppio linux-2.6-tip]# That is what is expected, right? I.e. as we didn't specify any tracepoint event via -e, it should gracefully bail out and not SEGFAULT. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> 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: <1258821086-11521-3-git-send-email-acme@infradead.org> [ Fixed the error messages some more ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/util/trace-event-read.c')
-rw-r--r--tools/perf/util/trace-event-read.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/perf/util/trace-event-read.c b/tools/perf/util/trace-event-read.c
index 44292e0..342dfdd 100644
--- a/tools/perf/util/trace-event-read.c
+++ b/tools/perf/util/trace-event-read.c
@@ -471,11 +471,11 @@ void trace_report(int fd)
read_or_die(buf, 3);
if (memcmp(buf, test, 3) != 0)
- die("not an trace data file");
+ die("no trace data in the file");
read_or_die(buf, 7);
if (memcmp(buf, "tracing", 7) != 0)
- die("not a trace file (missing tracing)");
+ die("not a trace file (missing 'tracing' tag)");
version = read_string();
if (show_version)