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* workqueue: rename cpu_workqueue to pool_workqueueTejun Heo2013-02-131-1/+1
| | | | | | | | | | | | | | | | | workqueue has moved away from global_cwqs to worker_pools and with the scheduled custom worker pools, wforkqueues will be associated with pools which don't have anything to do with CPUs. The workqueue code went through significant amount of changes recently and mass renaming isn't likely to hurt much additionally. Let's replace 'cpu' with 'pool' so that it reflects the current design. * s/struct cpu_workqueue_struct/struct pool_workqueue/ * s/cpu_wq/pool_wq/ * s/cwq/pwq/ This patch is purely cosmetic. Signed-off-by: Tejun Heo <tj@kernel.org>
* workqueue: remove global_cwqTejun Heo2013-01-241-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | global_cwq is now nothing but a container for per-cpu standard worker_pools. Declare the worker pools directly as cpu/unbound_std_worker_pools[] and remove global_cwq. * ____cacheline_aligned_in_smp moved from global_cwq to worker_pool. This probably would have made sense even before this change as we want each pool to be aligned. * get_gcwq() is replaced with std_worker_pools() which returns the pointer to the standard pool array for a given CPU. * __alloc_workqueue_key() updated to use get_std_worker_pool() instead of open-coding pool determination. This is part of an effort to remove global_cwq and make worker_pool the top level abstraction, which in turn will help implementing worker pools with user-specified attributes. v2: Joonsoo pointed out that it'd better to align struct worker_pool rather than the array so that every pool is aligned. Signed-off-by: Tejun Heo <tj@kernel.org> Reviewed-by: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Joonsoo Kim <js1304@gmail.com>
* workqueue: implement current_is_async()Tejun Heo2013-01-181-0/+11
| | | | | | | | This function queries whether %current is an async worker executing an async item. This will be used to implement warning on synchronous request_module() from async workers. Signed-off-by: Tejun Heo <tj@kernel.org>
* workqueue: move struct worker definition to workqueue_internal.hTejun Heo2013-01-181-0/+37
| | | | | | | | | 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>
* workqueue: rename kernel/workqueue_sched.h to kernel/workqueue_internal.hTejun Heo2013-01-181-0/+18
Workqueue wants to expose more interface internal to kernel/. Instead of adding a new header file, repurpose kernel/workqueue_sched.h. Rename it to workqueue_internal.h and add include protector. This patch doesn't introduce any functional changes. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org>
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