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scsi: qla2xxx: remove irq_affinity_notifier

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Now that qla2xxx uses the IRQ layer affinity assignment, affinity won't
change over the life time of a device and the notifiers are useless.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Christoph Hellwig 2017-01-11 17:55:46 +01:00 committed by Martin K. Petersen
parent 17e5fc5858
commit 98624c4fed
2 changed files with 0 additions and 74 deletions
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1
drivers/scsi/qla2xxx/qla_def.h
View File

@ -2754,7 +2754,6 @@ struct qla_msix_entry {
uint16_t entry;
char name[30];
void *handle;
struct irq_affinity_notify irq_notify;
int cpuid;
};

73
drivers/scsi/qla2xxx/qla_isr.c
View File

@ -18,10 +18,6 @@ static void qla2x00_status_entry(scsi_qla_host_t *, struct rsp_que *, void *);
static void qla2x00_status_cont_entry(struct rsp_que *, sts_cont_entry_t *);
static void qla2x00_error_entry(scsi_qla_host_t *, struct rsp_que *,
sts_entry_t *);
static void qla_irq_affinity_notify(struct irq_affinity_notify *,
const cpumask_t *);
static void qla_irq_affinity_release(struct kref *);
/**
* qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
@ -2571,14 +2567,6 @@ void qla24xx_process_response_queue(struct scsi_qla_host *vha,
if (!vha->flags.online)
return;
if (rsp->msix && rsp->msix->cpuid != smp_processor_id()) {
/* if kernel does not notify qla of IRQ's CPU change,
* then set it here.
*/
rsp->msix->cpuid = smp_processor_id();
ha->tgt.rspq_vector_cpuid = rsp->msix->cpuid;
}
while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
@ -3075,9 +3063,6 @@ qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
qentry->have_irq = 0;
qentry->in_use = 0;
qentry->handle = NULL;
qentry->irq_notify.notify = qla_irq_affinity_notify;
qentry->irq_notify.release = qla_irq_affinity_release;
qentry->cpuid = -1;
}
/* Enable MSI-X vectors for the base queue */
@ -3099,18 +3084,6 @@ qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
goto msix_register_fail;
qentry->have_irq = 1;
qentry->in_use = 1;
/* Register for CPU affinity notification. */
irq_set_affinity_notifier(qentry->vector, &qentry->irq_notify);
/* Schedule work (ie. trigger a notification) to read cpu
* mask for this specific irq.
* kref_get is required because
* irq_affinity_notify() will do
* kref_put().
*/
kref_get(&qentry->irq_notify.kref);
schedule_work(&qentry->irq_notify.work);
}
/*
@ -3307,49 +3280,3 @@ int qla25xx_request_irq(struct qla_hw_data *ha, struct qla_qpair *qpair,
msix->handle = qpair;
return ret;
}
/* irq_set_affinity/irqbalance will trigger notification of cpu mask update */
static void qla_irq_affinity_notify(struct irq_affinity_notify *notify,
const cpumask_t *mask)
{
struct qla_msix_entry *e =
container_of(notify, struct qla_msix_entry, irq_notify);
struct qla_hw_data *ha;
struct scsi_qla_host *base_vha;
struct rsp_que *rsp = e->handle;
/* user is recommended to set mask to just 1 cpu */
e->cpuid = cpumask_first(mask);
ha = rsp->hw;
base_vha = pci_get_drvdata(ha->pdev);
ql_dbg(ql_dbg_init, base_vha, 0xffff,
"%s: host %ld : vector %d cpu %d \n", __func__,
base_vha->host_no, e->vector, e->cpuid);
if (e->have_irq) {
if ((IS_QLA83XX(ha) || IS_QLA27XX(ha)) &&
(e->entry == QLA83XX_RSPQ_MSIX_ENTRY_NUMBER)) {
ha->tgt.rspq_vector_cpuid = e->cpuid;
ql_dbg(ql_dbg_init, base_vha, 0xffff,
"%s: host%ld: rspq vector %d cpu %d runtime change\n",
__func__, base_vha->host_no, e->vector, e->cpuid);
}
}
}
static void qla_irq_affinity_release(struct kref *ref)
{
struct irq_affinity_notify *notify =
container_of(ref, struct irq_affinity_notify, kref);
struct qla_msix_entry *e =
container_of(notify, struct qla_msix_entry, irq_notify);
struct rsp_que *rsp = e->handle;
struct scsi_qla_host *base_vha = pci_get_drvdata(rsp->hw->pdev);
ql_dbg(ql_dbg_init, base_vha, 0xffff,
"%s: host%ld: vector %d cpu %d\n", __func__,
base_vha->host_no, e->vector, e->cpuid);
}