Function report |
Source Code:block\elevator.c |
Create Date:2022-07-28 16:57:29 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:elevator_get
Proto:static struct elevator_type *elevator_get(struct request_queue *q, const char *name, bool try_loading)
Type:struct elevator_type
Parameter:
Type | Parameter | Name |
---|---|---|
struct request_queue * | q | |
const char * | name | |
bool | try_loading |
145 | spin_lock( & elv_list_lock) |
148 | If Not e && try_loading Then |
149 | spin_unlock( & elv_list_lock) |
150 | try to load a kernel module("%s-iosched", name) |
151 | spin_lock( & elv_list_lock) |
155 | If e && Not try_module_get(elevator_owner) Then e = NULL |
158 | spin_unlock( & elv_list_lock) |
159 | Return e |
Name | Describe |
---|---|
elevator_get_default | For single queue devices, default to using mq-deadline. If we have multiple* queues or mq-deadline is not available, default to "none". |
__elevator_change | Switch this queue to the given IO scheduler. |
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