diff options
| author | Kashyap.Desai@avagotech.com <Kashyap.Desai@avagotech.com> | 2014-08-20 19:24:33 +0530 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2014-09-15 16:01:58 -0700 |
| commit | 64bdcbc449105377dd60c8da97cfc1663b39562c (patch) | |
| tree | be79dd9fe4dfd101dc68ed5ee6d0d53ce2efad09 /drivers/scsi/dpt_i2o.c | |
| parent | 2eefd57b97609949ae40952da2dea338e7d9a125 (diff) | |
scsi: add use_cmd_list flag
Add a use_cmd_list flag in struct Scsi_Host to request keeping track of
all outstanding commands per device.
Default behaviour is not to keep track of cmd_list per sdev, as this may
introduce lock contention. (overhead is more on multi-node NUMA.), and
only enable it on the two drivers that need it.
Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/scsi/dpt_i2o.c')
| -rw-r--r-- | drivers/scsi/dpt_i2o.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/scsi/dpt_i2o.c b/drivers/scsi/dpt_i2o.c index 67283ef418ac..072f0ec2851e 100644 --- a/drivers/scsi/dpt_i2o.c +++ b/drivers/scsi/dpt_i2o.c @@ -2363,6 +2363,7 @@ static s32 adpt_scsi_host_alloc(adpt_hba* pHba, struct scsi_host_template *sht) host->unique_id = (u32)sys_tbl_pa + pHba->unit; host->sg_tablesize = pHba->sg_tablesize; host->can_queue = pHba->post_fifo_size; + host->use_cmd_list = 1; return 0; } |