bfq_bfqq_budget_left

Name:bfq_bfqq_budget_left

Proto:static int bfq_bfqq_budget_left(struct bfq_queue *bfqq)

Type:int

Parameter:

Type	Parameter	Name
struct bfq_queue *	bfqq

1311

entity = ity representing this queue in the scheduler

1313

Return budget, used also to calculate F_i: F_i = S_i + @budget / @weight - amount of service received during the last service slot

**Caller**
Name	Describe
bfq_bfqq_update_budg_for_activation	The next function, invoked after the input queue bfqq switches from* idle to busy, updates the budget of bfqq. The function also tells* whether the in-service queue should be expired, by returning* true
__bfq_bfqq_recalc_budget	__bfq_bfqq_recalc_budget - try to adapt the budget to the @bfqq behavior.@bfqd: device data.@bfqq: queue to update.@reason: reason for expiration. Handle the feedback on @bfqq budget at queue expiration.* See the body for detailed comments.
bfq_bfqq_expire	q_bfqq_expire - expire a queue.@bfqd: device owning the queue.@bfqq: the queue to expire.@compensate: if true, compensate for the time spent idling.@reason: the reason causing the expiration.* If the process associated with bfqq does slow I/O (e
bfq_may_expire_for_budg_timeout	If we expire a queue that is actively waiting (i.e., with the* device idled) for the arrival of a new request, then we may incur* the timestamp misalignment problem described in the body of the* function __bfq_activate_entity
bfq_choose_bfqq_for_injection	This function chooses the queue from which to pick the next extra* I/O request to inject, if it finds a compatible queue
bfq_select_queue	Select a queue for service. If we have a current queue in service,* check whether to continue servicing it, or retrieve and set a new one.

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