summaryrefslogtreecommitdiff
path: root/include/linux/ftrace.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/ftrace.h')
-rw-r--r--include/linux/ftrace.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index a69f363b61bf..832e65f06754 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -643,6 +643,22 @@ static inline int ftrace_disable_ftrace_graph_caller(void) { return 0; }
extern int ftrace_make_nop(struct module *mod,
struct dyn_ftrace *rec, unsigned long addr);
+/**
+ * ftrace_need_init_nop - return whether nop call sites should be initialized
+ *
+ * Normally the compiler's -mnop-mcount generates suitable nops, so we don't
+ * need to call ftrace_init_nop() if the code is built with that flag.
+ * Architectures where this is not always the case may define their own
+ * condition.
+ *
+ * Return must be:
+ * 0 if ftrace_init_nop() should be called
+ * Nonzero if ftrace_init_nop() should not be called
+ */
+
+#ifndef ftrace_need_init_nop
+#define ftrace_need_init_nop() (!__is_defined(CC_USING_NOP_MCOUNT))
+#endif
/**
* ftrace_init_nop - initialize a nop call site