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Commit ea51190c authored by Christoph Hellwig's avatar Christoph Hellwig
Browse files

irq_poll: fold irq_poll_sched_prep into irq_poll_sched 



There is no good reason to keep them apart, and this makes using the API
a bit simpler.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarBart Van Assche <bart.vanassche@sandisk.com>
parent 78d0264e

drivers/scsi/be2iscsi/be_main.c

+2 −4
Original line number Diff line number Diff line
@@ -910,7 +910,6 @@ static irqreturn_t be_isr_msix(int irq, void *dev_id) 
	num_eq_processed = 0;

	while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]

				& EQE_VALID_MASK) {

		if (!irq_poll_sched_prep(&pbe_eq->iopoll))

		irq_poll_sched(&pbe_eq->iopoll);



		AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
@@ -972,7 +971,6 @@ static irqreturn_t be_isr(int irq, void *dev_id) 
			spin_unlock_irqrestore(&phba->isr_lock, flags);

			num_mcceq_processed++;

		} else {

			if (!irq_poll_sched_prep(&pbe_eq->iopoll))

			irq_poll_sched(&pbe_eq->iopoll);

			num_ioeq_processed++;

		}

drivers/scsi/ipr.c

+1 −2
Original line number Diff line number Diff line
@@ -5692,7 +5692,6 @@ static irqreturn_t ipr_isr_mhrrq(int irq, void *devp) 
	if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {

		if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==

		       hrrq->toggle_bit) {

			if (!irq_poll_sched_prep(&hrrq->iopoll))

			irq_poll_sched(&hrrq->iopoll);

			spin_unlock_irqrestore(hrrq->lock, hrrq_flags);

			return IRQ_HANDLED;

include/linux/irq_poll.h

+0 −13
Original line number Diff line number Diff line
@@ -18,19 +18,6 @@ enum { 
	IRQ_POLL_F_DISABLE	= 1,

};



/*

 * Returns 0 if we successfully set the IRQ_POLL_F_SCHED bit, indicating

 * that we were the first to acquire this iop for scheduling. If this iop

 * is currently disabled, return "failure".

 */

static inline int irq_poll_sched_prep(struct irq_poll *iop)

{

	if (!test_bit(IRQ_POLL_F_DISABLE, &iop->state))

		return test_and_set_bit(IRQ_POLL_F_SCHED, &iop->state);



	return 1;

}



static inline int irq_poll_disable_pending(struct irq_poll *iop)

{

	return test_bit(IRQ_POLL_F_DISABLE, &iop->state);

lib/irq_poll.c

+7 −3
Original line number Diff line number Diff line
@@ -21,13 +21,17 @@ static DEFINE_PER_CPU(struct list_head, blk_cpu_iopoll); 
 *

 * Description:

 *     Add this irq_poll structure to the pending poll list and trigger the

 *     raise of the blk iopoll softirq. The driver must already have gotten a

 *     successful return from irq_poll_sched_prep() before calling this.

 *     raise of the blk iopoll softirq.

 **/

void irq_poll_sched(struct irq_poll *iop)

{

	unsigned long flags;



	if (test_bit(IRQ_POLL_F_DISABLE, &iop->state))

		return;

	if (!test_and_set_bit(IRQ_POLL_F_SCHED, &iop->state))

		return;



	local_irq_save(flags);

	list_add_tail(&iop->list, this_cpu_ptr(&blk_cpu_iopoll));

	__raise_softirq_irqoff(IRQ_POLL_SOFTIRQ);
@@ -58,7 +62,7 @@ EXPORT_SYMBOL(__irq_poll_complete); 
 * Description:

 *     If a driver consumes less than the assigned budget in its run of the

 *     iopoll handler, it'll end the polled mode by calling this function. The

 *     iopoll handler will not be invoked again before irq_poll_sched_prep()

 *     iopoll handler will not be invoked again before irq_poll_sched()

 *     is called.

 **/

void irq_poll_complete(struct irq_poll *iop)