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-rw-r--r--include/linux/ftrace.h30
1 files changed, 18 insertions, 12 deletions
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 8415a522f43..e0ae83bbd9c 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -82,9 +82,13 @@ void clear_ftrace_function(void);
extern void ftrace_stub(unsigned long a0, unsigned long a1);
#else /* !CONFIG_FUNCTION_TRACER */
-# define register_ftrace_function(ops) do { } while (0)
-# define unregister_ftrace_function(ops) do { } while (0)
-# define clear_ftrace_function(ops) do { } while (0)
+/*
+ * (un)register_ftrace_function must be a macro since the ops parameter
+ * must not be evaluated.
+ */
+#define register_ftrace_function(ops) ({ 0; })
+#define unregister_ftrace_function(ops) ({ 0; })
+static inline void clear_ftrace_function(void) { }
static inline void ftrace_kill(void) { }
static inline void ftrace_stop(void) { }
static inline void ftrace_start(void) { }
@@ -237,11 +241,13 @@ extern int skip_trace(unsigned long ip);
extern void ftrace_disable_daemon(void);
extern void ftrace_enable_daemon(void);
#else
-# define skip_trace(ip) ({ 0; })
-# define ftrace_force_update() ({ 0; })
-# define ftrace_set_filter(buf, len, reset) do { } while (0)
-# define ftrace_disable_daemon() do { } while (0)
-# define ftrace_enable_daemon() do { } while (0)
+static inline int skip_trace(unsigned long ip) { return 0; }
+static inline int ftrace_force_update(void) { return 0; }
+static inline void ftrace_set_filter(unsigned char *buf, int len, int reset)
+{
+}
+static inline void ftrace_disable_daemon(void) { }
+static inline void ftrace_enable_daemon(void) { }
static inline void ftrace_release_mod(struct module *mod) {}
static inline int register_ftrace_command(struct ftrace_func_command *cmd)
{
@@ -314,16 +320,16 @@ static inline void __ftrace_enabled_restore(int enabled)
extern void time_hardirqs_on(unsigned long a0, unsigned long a1);
extern void time_hardirqs_off(unsigned long a0, unsigned long a1);
#else
-# define time_hardirqs_on(a0, a1) do { } while (0)
-# define time_hardirqs_off(a0, a1) do { } while (0)
+ static inline void time_hardirqs_on(unsigned long a0, unsigned long a1) { }
+ static inline void time_hardirqs_off(unsigned long a0, unsigned long a1) { }
#endif
#ifdef CONFIG_PREEMPT_TRACER
extern void trace_preempt_on(unsigned long a0, unsigned long a1);
extern void trace_preempt_off(unsigned long a0, unsigned long a1);
#else
-# define trace_preempt_on(a0, a1) do { } while (0)
-# define trace_preempt_off(a0, a1) do { } while (0)
+ static inline void trace_preempt_on(unsigned long a0, unsigned long a1) { }
+ static inline void trace_preempt_off(unsigned long a0, unsigned long a1) { }
#endif
#ifdef CONFIG_FTRACE_MCOUNT_RECORD