Commit Graph

5 Commits

Author SHA1 Message Date
Tejun Heo 112202d909 workqueue: rename cpu_workqueue to pool_workqueue
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>
2013-02-13 19:29:12 -08:00
Tejun Heo a60dc39c01 workqueue: remove global_cwq
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>
2013-01-24 11:01:34 -08:00
Tejun Heo 84b233adcc workqueue: implement current_is_async()
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>
2013-01-18 14:05:56 -08:00
Tejun Heo 2eaebdb33e 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>
2013-01-18 14:05:55 -08:00
Tejun Heo ea138446e5 workqueue: rename kernel/workqueue_sched.h to kernel/workqueue_internal.h
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>
2013-01-18 14:05:55 -08:00