timer: Clean up timer initializers
Over time, timer initializers became messy with unnecessarily
duplicated code which are inconsistently spread across timer.h and
timer.c.
This patch cleans up timer initializers.
* timer.c::__init_timer() is renamed to do_init_timer().
* __TIMER_INITIALIZER() added. It takes @flags and all initializers
are wrappers around it.
* init_timer[_on_stack]_key() now take @flags.
* __init_timer[_on_stack]() added. They take @flags and all init
macros are wrappers around them.
* __setup_timer[_on_stack]() added. It uses __init_timer() and takes
@flags. All setup macros are wrappers around the two.
Note that this patch doesn't add missing init/setup combinations -
e.g. init_timer_deferrable_on_stack(). Adding missing ones is
trivial.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: torvalds@linux-foundation.org
Cc: peterz@infradead.org
Link: http://lkml.kernel.org/r/1344449428-24962-4-git-send-email-tj@kernel.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/include/linux/timer.h b/include/linux/timer.h
index 1d364ae..3f95c1f 100644
--- a/include/linux/timer.h
+++ b/include/linux/timer.h
@@ -62,136 +62,91 @@
#define TIMER_FLAG_MASK 0x1LU
-#define TIMER_INITIALIZER(_function, _expires, _data) { \
+#define __TIMER_INITIALIZER(_function, _expires, _data, _flags) { \
.entry = { .prev = TIMER_ENTRY_STATIC }, \
.function = (_function), \
.expires = (_expires), \
.data = (_data), \
- .base = &boot_tvec_bases, \
+ .base = (void *)((unsigned long)&boot_tvec_bases + (_flags)), \
.slack = -1, \
__TIMER_LOCKDEP_MAP_INITIALIZER( \
__FILE__ ":" __stringify(__LINE__)) \
}
-#define TBASE_MAKE_DEFERRED(ptr) ((struct tvec_base *) \
- ((unsigned char *)(ptr) + TIMER_DEFERRABLE))
+#define TIMER_INITIALIZER(_function, _expires, _data) \
+ __TIMER_INITIALIZER((_function), (_expires), (_data), 0)
-#define TIMER_DEFERRED_INITIALIZER(_function, _expires, _data) {\
- .entry = { .prev = TIMER_ENTRY_STATIC }, \
- .function = (_function), \
- .expires = (_expires), \
- .data = (_data), \
- .base = TBASE_MAKE_DEFERRED(&boot_tvec_bases), \
- __TIMER_LOCKDEP_MAP_INITIALIZER( \
- __FILE__ ":" __stringify(__LINE__)) \
- }
+#define TIMER_DEFERRED_INITIALIZER(_function, _expires, _data) \
+ __TIMER_INITIALIZER((_function), (_expires), (_data), TIMER_DEFERRABLE)
#define DEFINE_TIMER(_name, _function, _expires, _data) \
struct timer_list _name = \
TIMER_INITIALIZER(_function, _expires, _data)
-void init_timer_key(struct timer_list *timer,
- const char *name,
- struct lock_class_key *key);
-void init_timer_deferrable_key(struct timer_list *timer,
- const char *name,
- struct lock_class_key *key);
+void init_timer_key(struct timer_list *timer, 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,
- const char *name,
+ 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,
- const char *name,
+ unsigned int flags, const char *name,
struct lock_class_key *key)
{
- init_timer_key(timer, name, key);
+ init_timer_key(timer, flags, name, key);
}
#endif
#ifdef CONFIG_LOCKDEP
+#define __init_timer(_timer, _flags) \
+ do { \
+ static struct lock_class_key __key; \
+ init_timer_key((_timer), (_flags), #_timer, &__key); \
+ } while (0)
+
+#define __init_timer_on_stack(_timer, _flags) \
+ do { \
+ static struct lock_class_key __key; \
+ init_timer_on_stack_key((_timer), (_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)
+#endif
+
#define init_timer(timer) \
- do { \
- static struct lock_class_key __key; \
- init_timer_key((timer), #timer, &__key); \
- } while (0)
-
+ __init_timer((timer), 0)
#define init_timer_deferrable(timer) \
+ __init_timer((timer), TIMER_DEFERRABLE)
+#define init_timer_on_stack(timer) \
+ __init_timer_on_stack((timer), 0)
+
+#define __setup_timer(_timer, _fn, _data, _flags) \
do { \
- static struct lock_class_key __key; \
- init_timer_deferrable_key((timer), #timer, &__key); \
+ __init_timer((_timer), (_flags)); \
+ (_timer)->function = (_fn); \
+ (_timer)->data = (_data); \
} while (0)
-#define init_timer_on_stack(timer) \
+#define __setup_timer_on_stack(_timer, _fn, _data, _flags) \
do { \
- static struct lock_class_key __key; \
- init_timer_on_stack_key((timer), #timer, &__key); \
+ __init_timer_on_stack((_timer), (_flags)); \
+ (_timer)->function = (_fn); \
+ (_timer)->data = (_data); \
} while (0)
#define setup_timer(timer, fn, data) \
- do { \
- static struct lock_class_key __key; \
- setup_timer_key((timer), #timer, &__key, (fn), (data));\
- } while (0)
-
+ __setup_timer((timer), (fn), (data), 0)
#define setup_timer_on_stack(timer, fn, data) \
- do { \
- static struct lock_class_key __key; \
- setup_timer_on_stack_key((timer), #timer, &__key, \
- (fn), (data)); \
- } while (0)
+ __setup_timer_on_stack((timer), (fn), (data), 0)
#define setup_deferrable_timer_on_stack(timer, fn, data) \
- do { \
- static struct lock_class_key __key; \
- setup_deferrable_timer_on_stack_key((timer), #timer, \
- &__key, (fn), \
- (data)); \
- } while (0)
-#else
-#define init_timer(timer)\
- init_timer_key((timer), NULL, NULL)
-#define init_timer_deferrable(timer)\
- init_timer_deferrable_key((timer), NULL, NULL)
-#define init_timer_on_stack(timer)\
- init_timer_on_stack_key((timer), NULL, NULL)
-#define setup_timer(timer, fn, data)\
- setup_timer_key((timer), NULL, NULL, (fn), (data))
-#define setup_timer_on_stack(timer, fn, data)\
- setup_timer_on_stack_key((timer), NULL, NULL, (fn), (data))
-#define setup_deferrable_timer_on_stack(timer, fn, data)\
- setup_deferrable_timer_on_stack_key((timer), NULL, NULL, (fn), (data))
-#endif
-
-static inline void setup_timer_key(struct timer_list * timer,
- const char *name,
- struct lock_class_key *key,
- void (*function)(unsigned long),
- unsigned long data)
-{
- timer->function = function;
- timer->data = data;
- init_timer_key(timer, name, key);
-}
-
-static inline void setup_timer_on_stack_key(struct timer_list *timer,
- const char *name,
- struct lock_class_key *key,
- void (*function)(unsigned long),
- unsigned long data)
-{
- timer->function = function;
- timer->data = data;
- init_timer_on_stack_key(timer, name, key);
-}
-
-extern void setup_deferrable_timer_on_stack_key(struct timer_list *timer,
- const char *name,
- struct lock_class_key *key,
- void (*function)(unsigned long),
- unsigned long data);
+ __setup_timer_on_stack((timer), (fn), (data), TIMER_DEFERRABLE)
/**
* timer_pending - is a timer pending?