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| 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_mid.c | |
| parent | 2afa19a9377ca61b9489e44bf50029574fbe63be (diff) | |
| download | kernel_samsung_smdk4412-68ca949cdb04b4dc71451a999148fbc5f187a220.zip kernel_samsung_smdk4412-68ca949cdb04b4dc71451a999148fbc5f187a220.tar.gz kernel_samsung_smdk4412-68ca949cdb04b4dc71451a999148fbc5f187a220.tar.bz2 | |
[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_mid.c')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_mid.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/qla_mid.c b/drivers/scsi/qla2xxx/qla_mid.c index 9c08479..650bcef 100644 --- a/drivers/scsi/qla2xxx/qla_mid.c +++ b/drivers/scsi/qla2xxx/qla_mid.c @@ -633,6 +633,15 @@ que_failed: return 0; } +static void qla_do_work(struct work_struct *work) +{ + struct rsp_que *rsp = container_of(work, struct rsp_que, q_work); + struct scsi_qla_host *vha; + + vha = qla25xx_get_host(rsp); + qla24xx_process_response_queue(vha, rsp); +} + /* create response queue */ int qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options, @@ -711,6 +720,8 @@ qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options, rsp->req = NULL; qla2x00_init_response_q_entries(rsp); + if (rsp->hw->wq) + INIT_WORK(&rsp->q_work, qla_do_work); return rsp->id; que_failed: |