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| author |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2009-11-21 14:31:26 -0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2009-11-21 17:45:59 +0100 |
| commit | e25613683bd5c46d3e8c8ae6416dccc9f357dcdc (patch) | |
| tree | a78a494c84d705d8505bd45e80fe7375943bb76e /tools/perf/util/trace-event-read.c | |
| parent | perf symbols: Old versions of elf.h don't have NT_GNU_BUILD_ID (diff) | |
| download | wireguard-linux-e25613683bd5c46d3e8c8ae6416dccc9f357dcdc.tar.xz wireguard-linux-e25613683bd5c46d3e8c8ae6416dccc9f357dcdc.zip | |
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.c | 4 |
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 44292e06cca4..342dfdd43f87 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) |