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ftrace: do not init module on ftrace disabled

If one of the self tests of ftrace has disabled the function tracer,
do not run the code to convert the mcount calls in modules.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Steven Rostedt 17 年之前
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00fd61aee1
共有 1 個文件被更改,包括 2 次插入2 次删除
  1. 2 2
      kernel/trace/ftrace.c

+ 2 - 2
kernel/trace/ftrace.c

@@ -307,7 +307,7 @@ void ftrace_release(void *start, unsigned long size)
 	unsigned long e = s + size;
 	int i;
 
-	if (!start)
+	if (ftrace_disabled || !start)
 		return;
 
 	/* No interrupt should call this */
@@ -1567,7 +1567,7 @@ static int ftrace_convert_nops(unsigned long *start,
 
 void ftrace_init_module(unsigned long *start, unsigned long *end)
 {
-	if (start == end)
+	if (ftrace_disabled || start == end)
 		return;
 	ftrace_convert_nops(start, end);
 }