[tip:perf/core] perf ui progress: Fix divide by zero

[tip:perf/core] perf ui progress: Fix divide by zero

[tip-bot for Arnaldo Carvalho de Melo]

Commit-ID:  18b552350515188a732db6ccdb81e9cefb8b58c9
Gitweb:     http://git.kernel.org/tip/18b552350515188a732db6ccdb81e9cefb8b58c9
Author:     Arnaldo Carvalho de Melo <acme@redhat.com>
AuthorDate: Fri, 11 Nov 2011 22:08:07 -0200
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Mon, 28 Nov 2011 10:36:57 -0200

perf ui progress: Fix divide by zero

Happens in a perf.data file where one of the events had no samples.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-j7st3oyiotvfxqde2nc41kxb@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/ui/progress.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/tools/perf/util/ui/progress.c b/tools/perf/util/ui/progress.c
index 295e366..13aa64e 100644
--- a/tools/perf/util/ui/progress.c
+++ b/tools/perf/util/ui/progress.c
@@ -14,6 +14,9 @@ void ui_progress__update(u64 curr, u64 total, const char *title)
 	if (use_browser <= 0)
 		return;
 
+	if (total == 0)
+		return;
+
 	ui__refresh_dimensions(true);
 	pthread_mutex_lock(&ui__lock);
 	y = SLtt_Screen_Rows / 2 - 2;