Commit-ID: dc79959aaf80e518741657a702fa2727c86c1189
Gitweb: http://git.kernel.org/tip/dc79959aaf80e518741657a702fa2727c86c1189
Author: Tim Blechmann <tim@xxxxxxxxxx>
AuthorDate: Sat, 17 Oct 2009 18:08:29 +0200
Committer: Ingo Molnar <mingo@xxxxxxx>
CommitDate: Mon, 19 Oct 2009 09:52:39 +0200
perf top: Fix --delay_secs 0 division by zero
Add delay_secs sanity check to handle_keypress,
this fixes a division by zero crash.
Signed-off-by: Tim Blechmann <tim@xxxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
LKML-Reference: <4AD9EBFD.106@xxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
tools/perf/builtin-top.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 37512e9..a1b1d10 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -686,6 +686,8 @@ static void handle_keypress(int c)
switch (c) {
case 'd':
prompt_integer(&delay_secs, "Enter display delay");
+ if (delay_secs < 1)
+ delay_secs = 1;
break;
case 'e':
prompt_integer(&print_entries, "Enter display entries (lines)");
--
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