diff options
| author | Quinn Tran <quinn.tran@qlogic.com> | 2015-12-17 19:57:07 (GMT) |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2016-01-07 21:57:48 (GMT) |
| commit | 2f424b9b36ad7062e9ade41a9fb034d21a9e4e4b (patch) | |
| tree | 16b9022e3a39b29ea0d495db00610e0535fe805a /drivers/scsi/qla2xxx/qla_init.c | |
| parent | fb3269baf4ecc2ce6d17d4eb537080035bdf6d5b (diff) | |
| download | linux-2f424b9b36ad7062e9ade41a9fb034d21a9e4e4b.tar.xz | |
qla2xxx: Move atioq to a different lock to reduce lock contention
99% of the time the ATIOQ has SCSI command. The other 1% of time
is something else. Most of the time this interrupt does not need
to hold the hardware_lock. We're moving the ATIO interrupt thread
to a different lock to reduce lock contention.
Signed-off-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_init.c')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_init.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index 35d1ea8..993dd25 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -4919,7 +4919,7 @@ qla2x00_restart_isp(scsi_qla_host_t *vha) struct qla_hw_data *ha = vha->hw; struct req_que *req = ha->req_q_map[0]; struct rsp_que *rsp = ha->rsp_q_map[0]; - unsigned long flags; + unsigned long flags, flags2; /* If firmware needs to be loaded */ if (qla2x00_isp_firmware(vha)) { @@ -4948,8 +4948,10 @@ qla2x00_restart_isp(scsi_qla_host_t *vha) * while we weren't online. */ spin_lock_irqsave(&ha->hardware_lock, flags); + spin_lock_irqsave(&ha->tgt.atio_lock, flags2); if (qla_tgt_mode_enabled(vha)) - qlt_24xx_process_atio_queue(vha); + qlt_24xx_process_atio_queue(vha, 1); + spin_unlock_irqrestore(&ha->tgt.atio_lock, flags2); spin_unlock_irqrestore(&ha->hardware_lock, flags); set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); |