timer: Pass function down to initialization routines

In preparation for removing more macros, pass the function down to the
initialization routines instead of doing it in macros.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Kees Cook <keescook@chromium.org>

1 files changed, 15 insertions, 6 deletions

diff --git a/kernel/time/timer.c b/kernel/time/timer.c
index 0f0d49a02d04..ffebcf878fba 100644
--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -707,14 +707,18 @@ static inline void debug_timer_assert_init(struct timer_list *timer)
 	debug_object_assert_init(timer, &timer_debug_descr);
 }
 
-static void do_init_timer(struct timer_list *timer, unsigned int flags,
+static void do_init_timer(struct timer_list *timer,
+			  void (*func)(struct timer_list *),
+			  unsigned int flags,
 			  const char *name, struct lock_class_key *key);
 
-void init_timer_on_stack_key(struct timer_list *timer, unsigned int flags,
+void init_timer_on_stack_key(struct timer_list *timer,
+			     void (*func)(struct timer_list *),
+			     unsigned int flags,
 			     const char *name, struct lock_class_key *key)
 {
 	debug_object_init_on_stack(timer, &timer_debug_descr);
-	do_init_timer(timer, flags, name, key);
+	do_init_timer(timer, func, flags, name, key);
 }
 EXPORT_SYMBOL_GPL(init_timer_on_stack_key);
 
@@ -755,10 +759,13 @@ static inline void debug_assert_init(struct timer_list *timer)
 	debug_timer_assert_init(timer);
 }
 
-static void do_init_timer(struct timer_list *timer, unsigned int flags,
+static void do_init_timer(struct timer_list *timer,
+			  void (*func)(struct timer_list *),
+			  unsigned int flags,
 			  const char *name, struct lock_class_key *key)
 {
 	timer->entry.pprev = NULL;
+	timer->function = func;
 	timer->flags = flags | raw_smp_processor_id();
 	lockdep_init_map(&timer->lockdep_map, name, key, 0);
 }
@@ -766,6 +773,7 @@ static void do_init_timer(struct timer_list *timer, unsigned int flags,
 /**
  * init_timer_key - initialize a timer
  * @timer: the timer to be initialized
+ * @func: timer callback function
  * @flags: timer flags
  * @name: name of the timer
  * @key: lockdep class key of the fake lock used for tracking timer
@@ -774,11 +782,12 @@ static void do_init_timer(struct timer_list *timer, unsigned int flags,
  * init_timer_key() must be done to a timer prior calling *any* of the
  * other timer functions.
  */
-void init_timer_key(struct timer_list *timer, unsigned int flags,
+void init_timer_key(struct timer_list *timer,
+		    void (*func)(struct timer_list *), unsigned int flags,
 		    const char *name, struct lock_class_key *key)
 {
 	debug_init(timer);
-	do_init_timer(timer, flags, name, key);
+	do_init_timer(timer, func, flags, name, key);
 }
 EXPORT_SYMBOL(init_timer_key);