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tracing, function tracer: Clean up strstrip() usage 

Clean up strstrip() usage - which also addresses this build warning:

  kernel/trace/ftrace.c: In function 'ftrace_pid_write':
  kernel/trace/ftrace.c:3004: warning: ignoring return value of 'strstrip', declared with attribute warn_unused_result

Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2009-11-23 11:03:28 +01:00
parent 98e4833ba3
commit 457dc928f5
1 changed files with 4 additions and 5 deletions
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9
kernel/trace/ftrace.c
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@ -2985,7 +2985,7 @@ static ssize_t
ftrace_pid_write(struct file *filp, const char __user *ubuf,
size_t cnt, loff_t *ppos)
{
char buf[64];
char buf[64], *tmp;
long val;
int ret;
@ -3001,11 +3001,11 @@ ftrace_pid_write(struct file *filp, const char __user *ubuf,
* Allow "echo > set_ftrace_pid" or "echo -n '' > set_ftrace_pid"
* to clean the filter quietly.
*/
strstrip(buf);
if (strlen(buf) == 0)
tmp = strstrip(buf);
if (strlen(tmp) == 0)
return 1;
ret = strict_strtol(buf, 10, &val);
ret = strict_strtol(tmp, 10, &val);
if (ret < 0)
return ret;
@ -3391,4 +3391,3 @@ void ftrace_graph_stop(void)
ftrace_stop();
}
#endif