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author | Tejun Heo <tj@kernel.org> | 2013-01-18 14:05:55 -0800 |
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committer | Tejun Heo <tj@kernel.org> | 2013-01-18 14:05:55 -0800 |
commit | 2eaebdb33e1911c0cf3d44fd3596c42c6f502fab (patch) | |
tree | 240924aae7c1ce31dc850a290ef53e268f071ebd /kernel/workqueue_internal.h | |
parent | ea138446e51f7bfe55cdeffa3f1dd9cafc786bd8 (diff) | |
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workqueue: move struct worker definition to workqueue_internal.h
This will be used to implement an inline function to query whether
%current is a workqueue worker and, if so, allow determining which
work item it's executing.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/workqueue_internal.h')
-rw-r--r-- | kernel/workqueue_internal.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/kernel/workqueue_internal.h b/kernel/workqueue_internal.h index b3ea6ad..02549fa 100644 --- a/kernel/workqueue_internal.h +++ b/kernel/workqueue_internal.h @@ -7,6 +7,43 @@ #ifndef _KERNEL_WORKQUEUE_INTERNAL_H #define _KERNEL_WORKQUEUE_INTERNAL_H +#include <linux/workqueue.h> + +struct global_cwq; +struct worker_pool; + +/* + * The poor guys doing the actual heavy lifting. All on-duty workers are + * either serving the manager role, on idle list or on busy hash. For + * details on the locking annotation (L, I, X...), refer to workqueue.c. + * + * Only to be used in workqueue and async. + */ +struct worker { + /* on idle list while idle, on busy hash table while busy */ + union { + struct list_head entry; /* L: while idle */ + struct hlist_node hentry; /* L: while busy */ + }; + + struct work_struct *current_work; /* L: work being processed */ + work_func_t current_func; /* L: current_work's fn */ + struct cpu_workqueue_struct *current_cwq; /* L: current_work's cwq */ + struct list_head scheduled; /* L: scheduled works */ + struct task_struct *task; /* I: worker task */ + struct worker_pool *pool; /* I: the associated pool */ + /* 64 bytes boundary on 64bit, 32 on 32bit */ + unsigned long last_active; /* L: last active timestamp */ + unsigned int flags; /* X: flags */ + int id; /* I: worker id */ + + /* for rebinding worker to CPU */ + struct work_struct rebind_work; /* L: for busy worker */ + + /* used only by rescuers to point to the target workqueue */ + struct workqueue_struct *rescue_wq; /* I: the workqueue to rescue */ +}; + /* * Scheduler hooks for concurrency managed workqueue. Only to be used from * sched.c and workqueue.c. |