From 25b1606be1a910a63a23c3d1006581c9aad4e6e3 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Sat, 28 Nov 2015 02:32:37 +0900 Subject: [PATCH] perf report: Show error message when processing sample fails Currently when perf fails to process samples for some reason, it doesn't show any message about the failure. This is very inconvenient for users especially on TUI as screen is reset after the failure. Reported-by: Ingo Molnar Signed-off-by: Namhyung Kim Cc: David Ahern Cc: Jiri Olsa Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1448645559-31167-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-report.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 8a9c6908f54e..af5db885ea9c 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -513,20 +513,26 @@ static int __cmd_report(struct report *rep) if (rep->cpu_list) { ret = perf_session__cpu_bitmap(session, rep->cpu_list, rep->cpu_bitmap); - if (ret) + if (ret) { + ui__error("failed to set cpu bitmap\n"); return ret; + } } if (rep->show_threads) perf_read_values_init(&rep->show_threads_values); ret = report__setup_sample_type(rep); - if (ret) + if (ret) { + /* report__setup_sample_type() already showed error message */ return ret; + } ret = perf_session__process_events(session); - if (ret) + if (ret) { + ui__error("failed to process sample\n"); return ret; + } report__warn_kptr_restrict(rep);