diff options
| author | Quinn Tran <quinn.tran@qlogic.com> | 2015-12-17 20:57:07 +0100 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2016-01-07 22:57:48 +0100 |
| commit | 2f424b9b36ad7062e9ade41a9fb034d21a9e4e4b (patch) | |
| tree | 16b9022e3a39b29ea0d495db00610e0535fe805a /drivers/scsi/qla2xxx/qla_def.h | |
| parent | qla2xxx: Add selective command queuing (diff) | |
| download | linux-2f424b9b36ad7062e9ade41a9fb034d21a9e4e4b.tar.xz linux-2f424b9b36ad7062e9ade41a9fb034d21a9e4e4b.zip | |
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_def.h')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_def.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index c4fc32e9aaf9..96c5ffe1e831 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -2936,6 +2936,7 @@ struct qlt_hw_data { uint32_t leak_exchg_thresh_hold; spinlock_t sess_lock; int rspq_vector_cpuid; + spinlock_t atio_lock ____cacheline_aligned; }; #define MAX_QFULL_CMDS_ALLOC 8192 |