STAPPROBES.IOSCHED(3stap)

NAME
stapprobes.iosched - systemtap IO scheduler probe points

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

SEE ALSO
stap(1), stapprobes(3stap)