diff options
| author | Quinn Tran <quinn.tran@cavium.com> | 2017-06-14 06:47:20 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-06-28 04:21:40 +0300 |
| commit | 09620eeb62c4167d0c206f9a69730fa9e9251aae (patch) | |
| tree | 7c03e5194e923553bebefd958d645e7c2eb8963f /drivers/scsi/qla2xxx/qla_def.h | |
| parent | d65237c7f086042b5630d94fe2d151f62c09f723 (diff) | |
| download | linux-09620eeb62c4167d0c206f9a69730fa9e9251aae.tar.xz | |
scsi: qla2xxx: Add debug knob for user control workload
For Target mode, user can control the work load by placing qla2xxx's irq
vector on certain CPU via the smp_affinity knob. This patch allows user
to control the number of QPair's irq to be active. The irqs are
allocated at driver load time until unload. The work itself is placed on
the QPair based on user setting.
Usage:
modprobe qla2xxx qlini_mode=disabled ql2xuctrlirq=1
mount -t debugfs none /sys/kernel/debug
echo 2 > /sys/kernel/debug/qla2xxx/qla2xxx_[host num]/naqp
echo [cpu id] > /proc/irq/[irq id]/smp_affinity_list
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_def.h')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_def.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index 8b52f431a812..18b37c864250 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -3322,6 +3322,7 @@ struct qlt_hw_data { struct dentry *dfs_tgt_sess; struct dentry *dfs_tgt_port_database; + struct dentry *dfs_naqp; struct list_head q_full_list; uint32_t num_pend_cmds; @@ -3330,7 +3331,8 @@ struct qlt_hw_data { spinlock_t q_full_lock; uint32_t leak_exchg_thresh_hold; spinlock_t sess_lock; - int rspq_vector_cpuid; + int num_act_qpairs; +#define DEFAULT_NAQP 2 spinlock_t atio_lock ____cacheline_aligned; struct btree_head32 host_map; }; @@ -4278,6 +4280,9 @@ enum nexus_wait_type { WAIT_LUN, }; +#define USER_CTRL_IRQ(_ha) (ql2xuctrlirq && QLA_TGT_MODE_ENABLED() && \ + (IS_QLA27XX(_ha) || IS_QLA83XX(_ha))) + #include "qla_target.h" #include "qla_gbl.h" #include "qla_dbg.h" |