DESCRIPTION
This family of probe points is used to probe the IO scheduler activities. It contains the following probe points:
- ioscheduler.elv_next_request
- Fires when retrieves a request from request queue
Arguments:
elevator_name The elevator name
- ioscheduler.elv_next_request.return
- Fires when return from retrieving a request
Arguments:
req Address of the request
req_flags request flags
disk_major disk major number of the request
disk_minor disk minor number of the request
- ioscheduler.elv_add_request
- Fires when add a request into request queue
Arguments:
elevator_name The elevator name
req Address of the request
req_flags request flags
disk_major disk major number of the request
disk_minor disk minor number of the request
- ioscheduler.elv_completed_request
- Fires when a request is completed
Arguments:
elevator_name The elevator name
req Address of the request
req_flags request flags
disk_major disk major number of the request
disk_minor disk minor number of the request