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| H A D | kfd_process.c | diff fd320bf69297c3e4dbbb03193ec0b9cb68f3488a Sun May 29 10:44:11 CDT 2016 Bhaktipriya Shridhar <bhaktipriya96@gmail.com> drm/amdkfd: Remove create_workqueue()
alloc_workqueue replaces deprecated create_workqueue().
create_workqueue has been replaced with alloc_workqueue with max_active
as 0 since there is no need for throttling the number of active work items.
WQ_MEM_RECLAIM has not been set to because kfd_process_wq will not be
used in memory reclaim path.
kfd_process_wq is used for delay destruction. A work item embedded in
kfd_process gets queued to kfd_process_wq and when it executes it
destroys and frees the containing kfd_process and thus itself.
This requires a dedicated workqueue because a work item once queued, may
get freed at any point of time and any external entity cannot
flush the work item. So, in order to wait for such a work item,
it needs to be put on a dedicated workqueue.
kfd_module_exit() calls kfd_process_destroy_wq which ensures that all
pending work items are finished before the module is removed.
flush_workqueue is unnecessary since destroy_workqueue() itself calls
drain_workqueue() which flushes repeatedly till the workqueue
becomes empty.
Hence flush_workqueue has been removed.
Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
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