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tracing: Consolidate updating of count for traceon/off

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Remove some duplicate code and replace it with a helper function.
This makes the code a it cleaner.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt (Red Hat) 2013-03-09 08:36:53 -05:00 • committed by Steven Rostedt
parent 1b22e382ab
commit 1c31714328
1 changed files with 16 additions and 17 deletions
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29
kernel/trace/trace_functions.c
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@ -214,37 +214,36 @@ static struct tracer function_trace __read_mostly =
}; };
#ifdef CONFIG_DYNAMIC_FTRACE #ifdef CONFIG_DYNAMIC_FTRACE
static void static int update_count(void **data)
ftrace_traceon(unsigned long ip, unsigned long parent_ip, void **data)
{ {
long *count = (long *)data; unsigned long *count = (long *)data;
if (tracing_is_on())
return;
if (!*count) if (!*count)
return; return 0;
if (*count != -1) if (*count != -1)
(*count)--; (*count)--;
return 1;
}
static void
ftrace_traceon(unsigned long ip, unsigned long parent_ip, void **data)
{
if (tracing_is_on())
return;
if (update_count(data))
tracing_on(); tracing_on();
} }
static void static void
ftrace_traceoff(unsigned long ip, unsigned long parent_ip, void **data) ftrace_traceoff(unsigned long ip, unsigned long parent_ip, void **data)
{ {
long *count = (long *)data;
if (!tracing_is_on()) if (!tracing_is_on())
return; return;
if (!*count) if (update_count(data))
return;
if (*count != -1)
(*count)--;
tracing_off(); tracing_off();
} }