Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:block\blk-mq.c Create Date:2022-07-28 17:08:23
Last Modify:2020-03-17 23:18:05 Copyright©Brick
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Name:blk_mq_unfreeze_queue

Proto:void blk_mq_unfreeze_queue(struct request_queue *q)

Type:void

Parameter:

TypeParameterName
struct request_queue *q
188  mutex_lock( & * Protect concurrent access to q_usage_counter by * percpu_ref_kill() and percpu_ref_reinit().)
189  mq_freeze_depth--
190  WARN_ON_ONCE(mq_freeze_depth < 0)
191  If Not mq_freeze_depth Then
192  percpu_ref_resurrect - modify a percpu refcount from dead to live*@ref: perpcu_ref to resurrect* Modify @ref so that it's in the same state as before percpu_ref_kill() was* called
193  wake_up_all( & mq_freeze_wq)
195  mutex_unlock - release the mutex*@lock: the mutex to be released* Unlock a mutex that has been locked by this task previously.* This function must not be used in interrupt context. Unlocking* of a not locked mutex is not allowed.
Caller
NameDescribe
elevator_switchswitch to new_e io scheduler. be careful not to introduce deadlocks -* we don't free the old io scheduler, before we have allocated what we* need for the new one. this way we have a chance of going back to the old
queue_wb_lat_store
blk_mq_update_tag_set_depth
blk_mq_update_nr_requests
__blk_mq_update_nr_hw_queues
blkcg_activate_policylkcg_activate_policy - activate a blkcg policy on a request_queue*@q: request_queue of interest*@pol: blkcg policy to activate* Activate @pol on @q
blkcg_deactivate_policylkcg_deactivate_policy - deactivate a blkcg policy on a request_queue*@q: request_queue of interest*@pol: blkcg policy to deactivate* Deactivate @pol on @q. Follows the same synchronization rules as* blkcg_activate_policy().
iolatency_set_limit
blk_revalidate_disk_zoneslk_revalidate_disk_zones - (re)allocate and initialize zone bitmaps*@disk: Target disk* Helper function for low-level device drivers to (re) allocate and initialize* a disk request queue zone bitmaps. This functions should normally be called
blk_pre_runtime_suspendlk_pre_runtime_suspend - Pre runtime suspend check*@q: the queue of the device* Description:* This function will check if runtime suspend is allowed for the device* by examining if there are any requests pending in the queue