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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2011-02-17 17:40:46 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2011-02-17 17:40:46 +0100 |
| commit | 74cfc17dc1a69c37ce6c8a76c1ce84bcb796eb0e (patch) | |
| tree | 81b87743f35b80f30b63a8d5be16c2152934ece1 /tools/perf/builtin-report.c | |
| parent | perf record: Delay setting the header writing atexit call (diff) | |
| download | linux-74cfc17dc1a69c37ce6c8a76c1ce84bcb796eb0e.tar.xz linux-74cfc17dc1a69c37ce6c8a76c1ce84bcb796eb0e.zip | |
perf report: Tell the user when a perf.data file has no samples
[root@emilia ~]# perf report --stdio
The perf.data file has no samples!
[root@emilia ~]#
The TUI shows a popup warning message with the same message.
Reported-by: Ingo Molnar <mingo@elte.hu>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-report.c')
| -rw-r--r-- | tools/perf/builtin-report.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index f9a99a1ce609..dddcc7ea2bec 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -350,6 +350,12 @@ static int __cmd_report(void) perf_session__fprintf_dsos(session, stdout); next = rb_first(&session->hists_tree); + + if (next == NULL) { + ui__warning("The %s file has no samples!\n", input_name); + goto out_delete; + } + while (next) { struct hists *hists; |