Commit-ID: 74cfc17dc1a69c37ce6c8a76c1ce84bcb796eb0e Gitweb: http://git.kernel.org/tip/74cfc17dc1a69c37ce6c8a76c1ce84bcb796eb0e Author: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> AuthorDate: Thu, 17 Feb 2011 14:40:46 -0200 Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> CommitDate: Thu, 17 Feb 2011 14:40:46 -0200 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@xxxxxxx> Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx> Cc: Ingo Molnar <mingo@xxxxxxx> Cc: Mike Galbraith <efault@xxxxxx> Cc: Paul Mackerras <paulus@xxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Stephane Eranian <eranian@xxxxxxxxxx> Cc: Steven Rostedt <rostedt@xxxxxxxxxxx> Cc: Tom Zanussi <tzanussi@xxxxxxxxx> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> --- 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 f9a99a1..dddcc7e 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; -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html