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[PATCH] uninline init_waitqueue_head()

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allyesconfig vmlinux size delta:

  text            data    bss     dec          filename
  20736884        6073834 3075176 29885894     vmlinux.before
  20721009        6073966 3075176 29870151     vmlinux.after

~18 bytes per callsite, 15K of text size (~0.1%) saved.

(as an added bonus this also removes a lockdep annotation.)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Ingo Molnar 2006-07-10 04:45:32 -07:00 committed by Linus Torvalds
parent 92eb7a2f28
commit 21d71f513b
2 changed files with 7 additions and 13 deletions
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12
include/linux/wait.h
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@ -77,17 +77,7 @@ struct task_struct;
#define __WAIT_BIT_KEY_INITIALIZER(word, bit) \ #define __WAIT_BIT_KEY_INITIALIZER(word, bit) \
{ .flags = word, .bit_nr = bit, } { .flags = word, .bit_nr = bit, }
/* extern void init_waitqueue_head(wait_queue_head_t *q);
* lockdep: we want one lock-class for all waitqueue locks.
*/
extern struct lock_class_key waitqueue_lock_key;
static inline void init_waitqueue_head(wait_queue_head_t *q)
{
spin_lock_init(&q->lock);
lockdep_set_class(&q->lock, &waitqueue_lock_key);
INIT_LIST_HEAD(&q->task_list);
}
static inline void init_waitqueue_entry(wait_queue_t *q, struct task_struct *p) static inline void init_waitqueue_entry(wait_queue_t *q, struct task_struct *p)
{ {

8
kernel/wait.c
View file

@ -10,9 +10,13 @@
#include <linux/wait.h> #include <linux/wait.h>
#include <linux/hash.h> #include <linux/hash.h>
struct lock_class_key waitqueue_lock_key; void init_waitqueue_head(wait_queue_head_t *q)
{
spin_lock_init(&q->lock);
INIT_LIST_HEAD(&q->task_list);
}
EXPORT_SYMBOL(waitqueue_lock_key); EXPORT_SYMBOL(init_waitqueue_head);
void fastcall add_wait_queue(wait_queue_head_t *q, wait_queue_t *wait) void fastcall add_wait_queue(wait_queue_head_t *q, wait_queue_t *wait)
{ {