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perf report: Tell the user when a perf.data file has no samples

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[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 <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Mike Galbraith <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Cc: Steven Rostedt <[email protected]>
Cc: Tom Zanussi <[email protected]>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
Arnaldo Carvalho de Melo
2011-02-17 14:40:46 -02:00
parent 712a4b6049
commit 74cfc17dc1
1 changed files with 6 additions and 0 deletions
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tools/perf/builtin-report.c
+6
View File
@@ -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;