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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@klingt.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <4AD9EBFD.106@klingt.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Tim Blechmann 2009-10-17 18:08:29 +02:00 committed by Ingo Molnar
parent 210f9cb2cf
commit dc79959aaf
1 changed files with 2 additions and 0 deletions
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2
tools/perf/builtin-top.c
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@ -686,6 +686,8 @@ static void handle_keypress(int c)
switch (c) { switch (c) {
case 'd': case 'd':
prompt_integer(&delay_secs, "Enter display delay"); prompt_integer(&delay_secs, "Enter display delay");
if (delay_secs < 1)
delay_secs = 1;
break; break;
case 'e': case 'e':
prompt_integer(&print_entries, "Enter display entries (lines)"); prompt_integer(&print_entries, "Enter display entries (lines)");