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workqueue: Add debugobjects support

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Add debugobject support to track the life time of work_structs.

While at it, remove duplicate definition of
INIT_DELAYED_WORK_ON_STACK().

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Thomas Gleixner 2009-11-16 01:09:48 +09:00 • committed by Tejun Heo
parent a9366e61b0
commit dc186ad741
4 changed files with 166 additions and 15 deletions
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38
include/linux/workqueue.h
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@ -25,6 +25,7 @@ typedef void (*work_func_t)(struct work_struct *work);
struct work_struct {
atomic_long_t data;
#define WORK_STRUCT_PENDING 0 /* T if work item pending execution */
#define WORK_STRUCT_STATIC 1 /* static initializer (debugobjects) */
#define WORK_STRUCT_FLAG_MASK (3UL)
#define WORK_STRUCT_WQ_DATA_MASK (~WORK_STRUCT_FLAG_MASK)
struct list_head entry;
@ -35,6 +36,7 @@ struct work_struct {
};
#define WORK_DATA_INIT() ATOMIC_LONG_INIT(0)
#define WORK_DATA_STATIC_INIT() ATOMIC_LONG_INIT(2)
struct delayed_work {
struct work_struct work;
@ -63,7 +65,7 @@ struct execute_work {
#endif
#define __WORK_INITIALIZER(n, f) { \
.data = WORK_DATA_INIT(), \
.data = WORK_DATA_STATIC_INIT(), \
.entry = { &(n).entry, &(n).entry }, \
.func = (f), \
__WORK_INIT_LOCKDEP_MAP(#n, &(n)) \
@ -91,6 +93,14 @@ struct execute_work {
#define PREPARE_DELAYED_WORK(_work, _func) \
PREPARE_WORK(&(_work)->work, (_func))
#ifdef CONFIG_DEBUG_OBJECTS_WORK
extern void __init_work(struct work_struct *work, int onstack);
extern void destroy_work_on_stack(struct work_struct *work);
#else
static inline void __init_work(struct work_struct *work, int onstack) { }
static inline void destroy_work_on_stack(struct work_struct *work) { }
#endif
/*
* initialize all of a work item in one go
*
@ -99,24 +109,36 @@ struct execute_work {
* to generate better code.
*/
#ifdef CONFIG_LOCKDEP
#define INIT_WORK(_work, _func) \
#define __INIT_WORK(_work, _func, _onstack) \
do { \
static struct lock_class_key __key; \
\
__init_work((_work), _onstack); \
(_work)->data = (atomic_long_t) WORK_DATA_INIT(); \
lockdep_init_map(&(_work)->lockdep_map, #_work, &__key, 0);\
INIT_LIST_HEAD(&(_work)->entry); \
PREPARE_WORK((_work), (_func)); \
} while (0)
#else
#define INIT_WORK(_work, _func) \
#define __INIT_WORK(_work, _func, _onstack) \
do { \
__init_work((_work), _onstack); \
(_work)->data = (atomic_long_t) WORK_DATA_INIT(); \
INIT_LIST_HEAD(&(_work)->entry); \
PREPARE_WORK((_work), (_func)); \
} while (0)
#endif
#define INIT_WORK(_work, _func) \
do { \
__INIT_WORK((_work), (_func), 0); \
} while (0)
#define INIT_WORK_ON_STACK(_work, _func) \
do { \
__INIT_WORK((_work), (_func), 1); \
} while (0)
#define INIT_DELAYED_WORK(_work, _func) \
do { \
INIT_WORK(&(_work)->work, (_func)); \
@ -125,22 +147,16 @@ struct execute_work {
#define INIT_DELAYED_WORK_ON_STACK(_work, _func) \
do { \
INIT_WORK(&(_work)->work, (_func)); \
INIT_WORK_ON_STACK(&(_work)->work, (_func)); \
init_timer_on_stack(&(_work)->timer); \
} while (0)
#define INIT_DELAYED_WORK_DEFERRABLE(_work, _func) \
#define INIT_DELAYED_WORK_DEFERRABLE(_work, _func) \
do { \
INIT_WORK(&(_work)->work, (_func)); \
init_timer_deferrable(&(_work)->timer); \
} while (0)
#define INIT_DELAYED_WORK_ON_STACK(_work, _func) \
do { \
INIT_WORK(&(_work)->work, (_func)); \
init_timer_on_stack(&(_work)->timer); \
} while (0)
/**
* work_pending - Find out whether a work item is currently pending
* @work: The work item in question