diff options
| author | Anirban Chakraborty <anirban.chakraborty@qlogic.com> | 2009-04-06 22:33:41 -0700 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2009-05-20 17:21:08 -0500 |
| commit | 68ca949cdb04b4dc71451a999148fbc5f187a220 (patch) | |
| tree | d1d06940e8f128804529386ccea9c0757e61db0f /drivers/scsi/qla2xxx/qla_mbx.c | |
| parent | 2afa19a9377ca61b9489e44bf50029574fbe63be (diff) | |
[SCSI] qla2xxx: Add CPU affinity support.
Set the module parameter ql2xmultique_tag to 1 to enable this
feature. In this mode, the total number of response queues
created is equal to the number of online cpus. Turning the block
layer's rq_affinity mode on enables requests to be routed to the
proper cpu and at the same time it enables completion of the IO
in a response queue that is affined to the cpu in the request
path.
Signed-off-by: Anirban Chakraborty <anirban.chakraborty@qlogic.com>
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_mbx.c')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_mbx.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c index bfdc89f8569..366522e8a76 100644 --- a/drivers/scsi/qla2xxx/qla_mbx.c +++ b/drivers/scsi/qla2xxx/qla_mbx.c @@ -1497,7 +1497,10 @@ qla24xx_login_fabric(scsi_qla_host_t *vha, uint16_t loop_id, uint8_t domain, DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no)); - req = vha->req; + if (ql2xmultique_tag) + req = ha->req_q_map[0]; + else + req = vha->req; rsp = req->rsp; lg = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, &lg_dma); @@ -2311,7 +2314,10 @@ __qla24xx_issue_tmf(char *name, uint32_t type, struct fc_port *fcport, vha = fcport->vha; ha = vha->hw; req = vha->req; - rsp = req->rsp; + if (ql2xmultique_tag) + rsp = ha->rsp_q_map[tag + 1]; + else + rsp = req->rsp; tsk = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, &tsk_dma); if (tsk == NULL) { DEBUG2_3(printk("%s(%ld): failed to allocate Task Management " |