GitHub-Mirror/linux-bl808
2
0
Fork 0
mirror of https://github.com/Fishwaldo/linux-bl808.git synced 2025-06-17 20:25:19 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

WorkStruct: Merge the pending bit into the wq_data pointer

Browse source 
Reclaim a word from the size of the work_struct by folding the pending bit and
the wq_data pointer together.  This shouldn't cause misalignment problems as
all pointers should be at least 4-byte aligned.

Signed-Off-By: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells 2006-11-22 14:54:49 +00:00
parent 6bb49e5965
commit 365970a1ea
3 changed files with 57 additions and 15 deletions
Download patch file Download diff file Expand all files Collapse all files

27
include/linux/workqueue.h
View file

@ -14,11 +14,15 @@ struct workqueue_struct;
typedef void (*work_func_t)(void *data);
struct work_struct {
unsigned long pending;
/* the first word is the work queue pointer and the pending flag
* rolled into one */
unsigned long management;
#define WORK_STRUCT_PENDING 0 /* T if work item pending execution */
#define WORK_STRUCT_FLAG_MASK (3UL)
#define WORK_STRUCT_WQ_DATA_MASK (~WORK_STRUCT_FLAG_MASK)
struct list_head entry;
work_func_t func;
void *data;
void *wq_data;
};
struct delayed_work {
@ -65,7 +69,7 @@ struct execute_work {
#define INIT_WORK(_work, _func, _data) \
do { \
INIT_LIST_HEAD(&(_work)->entry); \
(_work)->pending = 0; \
(_work)->management = 0; \
PREPARE_WORK((_work), (_func), (_data)); \
} while (0)
@ -75,6 +79,21 @@ struct execute_work {
init_timer(&(_work)->timer); \
} while (0)
/**
* work_pending - Find out whether a work item is currently pending
* @work: The work item in question
*/
#define work_pending(work) \
test_bit(WORK_STRUCT_PENDING, &(work)->management)
/**
* delayed_work_pending - Find out whether a delayable work item is currently
* pending
* @work: The work item in question
*/
#define delayed_work_pending(work) \
test_bit(WORK_STRUCT_PENDING, &(work)->work.management)
extern struct workqueue_struct *__create_workqueue(const char *name,
int singlethread);
@ -115,7 +134,7 @@ static inline int cancel_delayed_work(struct delayed_work *work)
ret = del_timer_sync(&work->timer);
if (ret)
clear_bit(0, &work->work.pending);
clear_bit(WORK_STRUCT_PENDING, &work->work.management);
return ret;
}