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| author | Tejun Heo <tj@kernel.org> | 2010-09-16 10:17:35 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2010-09-19 17:51:05 +0200 |
| commit | 81dcaf6516d8bbd75b894862c8ae7bba04380cfe (patch) | |
| tree | 57545ae02e78513cb75d4e9472772ebb2e4408f2 /include/linux/workqueue.h | |
| parent | 151b6a5f1d4c547c92ec67a5a6fedc16f435956e (diff) | |
| download | lwn-81dcaf6516d8bbd75b894862c8ae7bba04380cfe.tar.gz lwn-81dcaf6516d8bbd75b894862c8ae7bba04380cfe.zip | |
workqueue: implement alloc_ordered_workqueue()
alloc_ordered_workqueue() creates a workqueue which processes each
work itemp one by one in the queued order. This will be used to
replace create_freezeable_workqueue() and
create_singlethread_workqueue().
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'include/linux/workqueue.h')
| -rw-r--r-- | include/linux/workqueue.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h index 25e02c941bac..07c48925a8fc 100644 --- a/include/linux/workqueue.h +++ b/include/linux/workqueue.h @@ -306,6 +306,24 @@ __alloc_workqueue_key(const char *name, unsigned int flags, int max_active, __alloc_workqueue_key((name), (flags), (max_active), NULL, NULL) #endif +/** + * alloc_ordered_workqueue - allocate an ordered workqueue + * @name: name of the workqueue + * @flags: WQ_* flags (only WQ_FREEZEABLE and WQ_RESCUER are meaningful) + * + * Allocate an ordered workqueue. An ordered workqueue executes at + * most one work item at any given time in the queued order. They are + * implemented as unbound workqueues with @max_active of one. + * + * RETURNS: + * Pointer to the allocated workqueue on success, %NULL on failure. + */ +static inline struct workqueue_struct * +alloc_ordered_workqueue(const char *name, unsigned int flags) +{ + return alloc_workqueue(name, WQ_UNBOUND | flags, 1); +} + #define create_workqueue(name) \ alloc_workqueue((name), WQ_RESCUER, 1) #define create_freezeable_workqueue(name) \ |