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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>
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1 changed files with 4 additions and 5 deletions
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@ -2985,7 +2985,7 @@ static ssize_t
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ftrace_pid_write(struct file *filp, const char __user *ubuf,
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size_t cnt, loff_t *ppos)
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{
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char buf[64];
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char buf[64], *tmp;
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long val;
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int ret;
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@ -3001,11 +3001,11 @@ ftrace_pid_write(struct file *filp, const char __user *ubuf,
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* Allow "echo > set_ftrace_pid" or "echo -n '' > set_ftrace_pid"
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* to clean the filter quietly.
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*/
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strstrip(buf);
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if (strlen(buf) == 0)
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tmp = strstrip(buf);
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if (strlen(tmp) == 0)
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return 1;
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ret = strict_strtol(buf, 10, &val);
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ret = strict_strtol(tmp, 10, &val);
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if (ret < 0)
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return ret;
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@ -3391,4 +3391,3 @@ void ftrace_graph_stop(void)
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ftrace_stop();
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}
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#endif
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