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authorTejun Heo <tj@kernel.org>2012-08-08 11:10:27 -0700
committerThomas Gleixner <tglx@linutronix.de>2012-08-21 16:28:30 +0200
commitfc683995a6c4e604d62ab9a488ac2c1ba94fa868 (patch)
treec43956da7c1fc34446d40d64f7cff81475915fee /kernel/timer.c
parent5a9af38d05f6a1bd0d3f1f69a074cdbe9c87e977 (diff)
downloadop-kernel-dev-fc683995a6c4e604d62ab9a488ac2c1ba94fa868.zip
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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>
Diffstat (limited to 'kernel/timer.c')
-rw-r--r--kernel/timer.c56
1 files changed, 14 insertions, 42 deletions
diff --git a/kernel/timer.c b/kernel/timer.c
index cf7af56..8d185a1 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -100,11 +100,6 @@ static inline struct tvec_base *tbase_get_base(struct tvec_base *base)
return ((struct tvec_base *)((unsigned long)base & ~TIMER_FLAG_MASK));
}
-static inline void timer_set_deferrable(struct timer_list *timer)
-{
- timer->base = TBASE_MAKE_DEFERRED(timer->base);
-}
-
static inline void
timer_set_base(struct timer_list *timer, struct tvec_base *new_base)
{
@@ -564,16 +559,14 @@ static inline void debug_timer_assert_init(struct timer_list *timer)
debug_object_assert_init(timer, &timer_debug_descr);
}
-static void __init_timer(struct timer_list *timer,
- const char *name,
- struct lock_class_key *key);
+static void do_init_timer(struct timer_list *timer, unsigned int flags,
+ const char *name, struct lock_class_key *key);
-void init_timer_on_stack_key(struct timer_list *timer,
- const char *name,
- struct lock_class_key *key)
+void init_timer_on_stack_key(struct timer_list *timer, unsigned int flags,
+ const char *name, struct lock_class_key *key)
{
debug_object_init_on_stack(timer, &timer_debug_descr);
- __init_timer(timer, name, key);
+ do_init_timer(timer, flags, name, key);
}
EXPORT_SYMBOL_GPL(init_timer_on_stack_key);
@@ -614,12 +607,13 @@ static inline void debug_assert_init(struct timer_list *timer)
debug_timer_assert_init(timer);
}
-static void __init_timer(struct timer_list *timer,
- const char *name,
- struct lock_class_key *key)
+static void do_init_timer(struct timer_list *timer, unsigned int flags,
+ const char *name, struct lock_class_key *key)
{
+ struct tvec_base *base = __raw_get_cpu_var(tvec_bases);
+
timer->entry.next = NULL;
- timer->base = __raw_get_cpu_var(tvec_bases);
+ timer->base = (void *)((unsigned long)base | flags);
timer->slack = -1;
#ifdef CONFIG_TIMER_STATS
timer->start_site = NULL;
@@ -629,22 +623,10 @@ static void __init_timer(struct timer_list *timer,
lockdep_init_map(&timer->lockdep_map, name, key, 0);
}
-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)
-{
- timer->function = function;
- timer->data = data;
- init_timer_on_stack_key(timer, name, key);
- timer_set_deferrable(timer);
-}
-EXPORT_SYMBOL_GPL(setup_deferrable_timer_on_stack_key);
-
/**
* init_timer_key - initialize a timer
* @timer: the timer to be initialized
+ * @flags: timer flags
* @name: name of the timer
* @key: lockdep class key of the fake lock used for tracking timer
* sync lock dependencies
@@ -652,24 +634,14 @@ EXPORT_SYMBOL_GPL(setup_deferrable_timer_on_stack_key);
* 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,
- 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)
{
debug_init(timer);
- __init_timer(timer, name, key);
+ do_init_timer(timer, flags, name, key);
}
EXPORT_SYMBOL(init_timer_key);
-void init_timer_deferrable_key(struct timer_list *timer,
- const char *name,
- struct lock_class_key *key)
-{
- init_timer_key(timer, name, key);
- timer_set_deferrable(timer);
-}
-EXPORT_SYMBOL(init_timer_deferrable_key);
-
static inline void detach_timer(struct timer_list *timer, bool clear_pending)
{
struct list_head *entry = &timer->entry;
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