Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timer updates from Thomas Gleixner:

 - The final conversion of timer wheel timers to timer_setup().

   A few manual conversions and a large coccinelle assisted sweep and
   the removal of the old initialization mechanisms and the related
   code.

 - Remove the now unused VSYSCALL update code

 - Fix permissions of /proc/timer_list. I still need to get rid of that
   file completely

 - Rename a misnomed clocksource function and remove a stale declaration

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (27 commits)
  m68k/macboing: Fix missed timer callback assignment
  treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts
  timer: Remove redundant __setup_timer*() macros
  timer: Pass function down to initialization routines
  timer: Remove unused data arguments from macros
  timer: Switch callback prototype to take struct timer_list * argument
  timer: Pass timer_list pointer to callbacks unconditionally
  Coccinelle: Remove setup_timer.cocci
  timer: Remove setup_*timer() interface
  timer: Remove init_timer() interface
  treewide: setup_timer() -> timer_setup() (2 field)
  treewide: setup_timer() -> timer_setup()
  treewide: init_timer() -> setup_timer()
  treewide: Switch DEFINE_TIMER callbacks to struct timer_list *
  s390: cmm: Convert timers to use timer_setup()
  lightnvm: Convert timers to use timer_setup()
  drivers/net: cris: Convert timers to use timer_setup()
  drm/vc4: Convert timers to use timer_setup()
  block/laptop_mode: Convert timers to use timer_setup()
  net/atm/mpc: Avoid open-coded assignment of timer callback function
  ...

6 files changed, 51 insertions, 111 deletions

diff --git a/include/linux/kthread.h b/include/linux/kthread.h
index 3203e36b2ee8..c1961761311d 100644
--- a/include/linux/kthread.h
+++ b/include/linux/kthread.h
@@ -118,8 +118,7 @@ struct kthread_delayed_work {
 
 #define KTHREAD_DELAYED_WORK_INIT(dwork, fn) {				\
 	.work = KTHREAD_WORK_INIT((dwork).work, (fn)),			\
-	.timer = __TIMER_INITIALIZER((TIMER_FUNC_TYPE)kthread_delayed_work_timer_fn,\
-				     (TIMER_DATA_TYPE)&(dwork.timer),	\
+	.timer = __TIMER_INITIALIZER(kthread_delayed_work_timer_fn,\
 				     TIMER_IRQSAFE),			\
 	}
 
@@ -165,10 +164,9 @@ extern void __kthread_init_worker(struct kthread_worker *worker,
 #define kthread_init_delayed_work(dwork, fn)				\
 	do {								\
 		kthread_init_work(&(dwork)->work, (fn));		\
-		__setup_timer(&(dwork)->timer,				\
-			      (TIMER_FUNC_TYPE)kthread_delayed_work_timer_fn,\
-			      (TIMER_DATA_TYPE)&(dwork)->timer,		\
-			      TIMER_IRQSAFE);				\
+		__init_timer(&(dwork)->timer,				\
+			     kthread_delayed_work_timer_fn,		\
+			     TIMER_IRQSAFE);				\
 	} while (0)
 
 int kthread_worker_fn(void *worker_ptr);
diff --git a/include/linux/timekeeper_internal.h b/include/linux/timekeeper_internal.h
index 7e9011101cb0..d315c3d6725c 100644
--- a/include/linux/timekeeper_internal.h
+++ b/include/linux/timekeeper_internal.h
@@ -136,13 +136,6 @@ struct timekeeper {
 extern void update_vsyscall(struct timekeeper *tk);
 extern void update_vsyscall_tz(void);
 
-#elif defined(CONFIG_GENERIC_TIME_VSYSCALL_OLD)
-
-extern void update_vsyscall_old(struct timespec *ts, struct timespec *wtm,
-				struct clocksource *c, u32 mult,
-				u64 cycle_last);
-extern void update_vsyscall_tz(void);
-
 #else
 
 static inline void update_vsyscall(struct timekeeper *tk)
diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h
index c198ab40c04f..b17bcce58bc4 100644
--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h
@@ -143,12 +143,6 @@ extern bool timekeeping_rtc_skipresume(void);
 extern void timekeeping_inject_sleeptime64(struct timespec64 *delta);
 
 /*
- * PPS accessor
- */
-extern void ktime_get_raw_and_real_ts64(struct timespec64 *ts_raw,
-				        struct timespec64 *ts_real);
-
-/*
  * struct system_time_snapshot - simultaneous raw/real time capture with
  *	counter value
  * @cycles:	Clocksource counter value to produce the system times
diff --git a/include/linux/timer.h b/include/linux/timer.h
index bf781acfc6d8..04af640ea95b 100644
--- a/include/linux/timer.h
+++ b/include/linux/timer.h
@@ -17,8 +17,7 @@ struct timer_list {
 	 */
 	struct hlist_node	entry;
 	unsigned long		expires;
-	void			(*function)(unsigned long);
-	unsigned long		data;
+	void			(*function)(struct timer_list *);
 	u32			flags;
 
 #ifdef CONFIG_LOCKDEP
@@ -64,13 +63,9 @@ struct timer_list {
 
 #define TIMER_TRACE_FLAGMASK	(TIMER_MIGRATING | TIMER_DEFERRABLE | TIMER_PINNED | TIMER_IRQSAFE)
 
-#define TIMER_DATA_TYPE		unsigned long
-#define TIMER_FUNC_TYPE		void (*)(TIMER_DATA_TYPE)
-
-#define __TIMER_INITIALIZER(_function, _data, _flags) {		\
+#define __TIMER_INITIALIZER(_function, _flags) {		\
 		.entry = { .next = TIMER_ENTRY_STATIC },	\
 		.function = (_function),			\
-		.data = (_data),				\
 		.flags = (_flags),				\
 		__TIMER_LOCKDEP_MAP_INITIALIZER(		\
 			__FILE__ ":" __stringify(__LINE__))	\
@@ -78,108 +73,71 @@ struct timer_list {
 
 #define DEFINE_TIMER(_name, _function)				\
 	struct timer_list _name =				\
-		__TIMER_INITIALIZER((TIMER_FUNC_TYPE)_function, 0, 0)
+		__TIMER_INITIALIZER(_function, 0)
 
-void init_timer_key(struct timer_list *timer, unsigned int flags,
+/*
+ * LOCKDEP and DEBUG timer interfaces.
+ */
+void init_timer_key(struct timer_list *timer,
+		    void (*func)(struct timer_list *), unsigned int flags,
 		    const char *name, struct lock_class_key *key);
 
 #ifdef CONFIG_DEBUG_OBJECTS_TIMERS
 extern 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);
-extern void destroy_timer_on_stack(struct timer_list *timer);
 #else
-static inline void destroy_timer_on_stack(struct timer_list *timer) { }
 static inline void init_timer_on_stack_key(struct timer_list *timer,
-					   unsigned int flags, const char *name,
+					   void (*func)(struct timer_list *),
+					   unsigned int flags,
+					   const char *name,
 					   struct lock_class_key *key)
 {
-	init_timer_key(timer, flags, name, key);
+	init_timer_key(timer, func, flags, name, key);
 }
 #endif
 
 #ifdef CONFIG_LOCKDEP
-#define __init_timer(_timer, _flags)					\
+#define __init_timer(_timer, _fn, _flags)				\
 	do {								\
 		static struct lock_class_key __key;			\
-		init_timer_key((_timer), (_flags), #_timer, &__key);	\
+		init_timer_key((_timer), (_fn), (_flags), #_timer, &__key);\
 	} while (0)
 
-#define __init_timer_on_stack(_timer, _flags)				\
+#define __init_timer_on_stack(_timer, _fn, _flags)			\
 	do {								\
 		static struct lock_class_key __key;			\
-		init_timer_on_stack_key((_timer), (_flags), #_timer, &__key); \
+		init_timer_on_stack_key((_timer), (_fn), (_flags),	\
+					#_timer, &__key);		 \
 	} while (0)
 #else
-#define __init_timer(_timer, _flags)					\
-	init_timer_key((_timer), (_flags), NULL, NULL)
-#define __init_timer_on_stack(_timer, _flags)				\
-	init_timer_on_stack_key((_timer), (_flags), NULL, NULL)
+#define __init_timer(_timer, _fn, _flags)				\
+	init_timer_key((_timer), (_fn), (_flags), NULL, NULL)
+#define __init_timer_on_stack(_timer, _fn, _flags)			\
+	init_timer_on_stack_key((_timer), (_fn), (_flags), NULL, NULL)
 #endif
 
-#define init_timer(timer)						\
-	__init_timer((timer), 0)
-
-#define __setup_timer(_timer, _fn, _data, _flags)			\
-	do {								\
-		__init_timer((_timer), (_flags));			\
-		(_timer)->function = (_fn);				\
-		(_timer)->data = (_data);				\
-	} while (0)
-
-#define __setup_timer_on_stack(_timer, _fn, _data, _flags)		\
-	do {								\
-		__init_timer_on_stack((_timer), (_flags));		\
-		(_timer)->function = (_fn);				\
-		(_timer)->data = (_data);				\
-	} while (0)
-
-#define setup_timer(timer, fn, data)					\
-	__setup_timer((timer), (fn), (data), 0)
-#define setup_pinned_timer(timer, fn, data)				\
-	__setup_timer((timer), (fn), (data), TIMER_PINNED)
-#define setup_deferrable_timer(timer, fn, data)				\
-	__setup_timer((timer), (fn), (data), TIMER_DEFERRABLE)
-#define setup_pinned_deferrable_timer(timer, fn, data)			\
-	__setup_timer((timer), (fn), (data), TIMER_DEFERRABLE | TIMER_PINNED)
-#define setup_timer_on_stack(timer, fn, data)				\
-	__setup_timer_on_stack((timer), (fn), (data), 0)
-#define setup_pinned_timer_on_stack(timer, fn, data)			\
-	__setup_timer_on_stack((timer), (fn), (data), TIMER_PINNED)
-#define setup_deferrable_timer_on_stack(timer, fn, data)		\
-	__setup_timer_on_stack((timer), (fn), (data), TIMER_DEFERRABLE)
-#define setup_pinned_deferrable_timer_on_stack(timer, fn, data)		\
-	__setup_timer_on_stack((timer), (fn), (data), TIMER_DEFERRABLE | TIMER_PINNED)
+/**
+ * timer_setup - prepare a timer for first use
+ * @timer: the timer in question
+ * @callback: the function to call when timer expires
+ * @flags: any TIMER_* flags
+ *
+ * Regular timer initialization should use either DEFINE_TIMER() above,
+ * or timer_setup(). For timers on the stack, timer_setup_on_stack() must
+ * be used and must be balanced with a call to destroy_timer_on_stack().
+ */
+#define timer_setup(timer, callback, flags)			\
+	__init_timer((timer), (callback), (flags))
 
-#ifndef CONFIG_LOCKDEP
-static inline void timer_setup(struct timer_list *timer,
-			       void (*callback)(struct timer_list *),
-			       unsigned int flags)
-{
-	__setup_timer(timer, (TIMER_FUNC_TYPE)callback,
-		      (TIMER_DATA_TYPE)timer, flags);
-}
+#define timer_setup_on_stack(timer, callback, flags)		\
+	__init_timer_on_stack((timer), (callback), (flags))
 
-static inline void timer_setup_on_stack(struct timer_list *timer,
-			       void (*callback)(struct timer_list *),
-			       unsigned int flags)
-{
-	__setup_timer_on_stack(timer, (TIMER_FUNC_TYPE)callback,
-			       (TIMER_DATA_TYPE)timer, flags);
-}
+#ifdef CONFIG_DEBUG_OBJECTS_TIMERS
+extern void destroy_timer_on_stack(struct timer_list *timer);
 #else
-/*
- * Under LOCKDEP, the timer lock_class_key (set up in __init_timer) needs
- * to be tied to the caller's context, so an inline (above) won't work. We
- * do want to keep the inline for argument type checking, though.
- */
-# define timer_setup(timer, callback, flags)				\
-		__setup_timer((timer), (TIMER_FUNC_TYPE)(callback),	\
-			      (TIMER_DATA_TYPE)(timer), (flags))
-# define timer_setup_on_stack(timer, callback, flags)			\
-		__setup_timer_on_stack((timer),				\
-				       (TIMER_FUNC_TYPE)(callback),	\
-				       (TIMER_DATA_TYPE)(timer), (flags))
+static inline void destroy_timer_on_stack(struct timer_list *timer) { }
 #endif
 
 #define from_timer(var, callback_timer, timer_fieldname) \
diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h
index 01a050fc6650..4a54ef96aff5 100644
--- a/include/linux/workqueue.h
+++ b/include/linux/workqueue.h
@@ -176,8 +176,7 @@ struct execute_work {
 
 #define __DELAYED_WORK_INITIALIZER(n, f, tflags) {			\
 	.work = __WORK_INITIALIZER((n).work, (f)),			\
-	.timer = __TIMER_INITIALIZER((TIMER_FUNC_TYPE)delayed_work_timer_fn,\
-				     (TIMER_DATA_TYPE)&(n.timer),	\
+	.timer = __TIMER_INITIALIZER(delayed_work_timer_fn,\
 				     (tflags) | TIMER_IRQSAFE),		\
 	}
 
@@ -242,19 +241,17 @@ static inline unsigned int work_static(struct work_struct *work) { return 0; }
 #define __INIT_DELAYED_WORK(_work, _func, _tflags)			\
 	do {								\
 		INIT_WORK(&(_work)->work, (_func));			\
-		__setup_timer(&(_work)->timer,				\
-			      (TIMER_FUNC_TYPE)delayed_work_timer_fn,	\
-			      (TIMER_DATA_TYPE)&(_work)->timer,		\
-			      (_tflags) | TIMER_IRQSAFE);		\
+		__init_timer(&(_work)->timer,				\
+			     delayed_work_timer_fn,			\
+			     (_tflags) | TIMER_IRQSAFE);		\
 	} while (0)
 
 #define __INIT_DELAYED_WORK_ONSTACK(_work, _func, _tflags)		\
 	do {								\
 		INIT_WORK_ONSTACK(&(_work)->work, (_func));		\
-		__setup_timer_on_stack(&(_work)->timer,			\
-				       (TIMER_FUNC_TYPE)delayed_work_timer_fn,\
-				       (TIMER_DATA_TYPE)&(_work)->timer,\
-				       (_tflags) | TIMER_IRQSAFE);	\
+		__init_timer_on_stack(&(_work)->timer,			\
+				      delayed_work_timer_fn,		\
+				      (_tflags) | TIMER_IRQSAFE);	\
 	} while (0)
 
 #define INIT_DELAYED_WORK(_work, _func)					\
diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index f42d85631d17..fdfd04e348f6 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -308,7 +308,7 @@ static inline void cgroup_writeback_umount(void)
 void laptop_io_completion(struct backing_dev_info *info);
 void laptop_sync_completion(void);
 void laptop_mode_sync(struct work_struct *work);
-void laptop_mode_timer_fn(unsigned long data);
+void laptop_mode_timer_fn(struct timer_list *t);
 #else
 static inline void laptop_sync_completion(void) { }
 #endif