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| author | Christoph Hellwig <hch@lst.de> | 2014-11-03 20:15:14 +0100 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2014-11-12 11:19:43 +0100 |
| commit | c8b09f6fb67df7fc1b51ced1037fa9b677428149 (patch) | |
| tree | 87527c3e17a7539c0ffa9f64fbd85ec2ad3dabf1 /drivers/scsi/aic7xxx | |
| parent | 2ecb204d07ac8debe3893c362415919bc78bebd6 (diff) | |
| download | linux-c8b09f6fb67df7fc1b51ced1037fa9b677428149.tar.gz linux-c8b09f6fb67df7fc1b51ced1037fa9b677428149.tar.bz2 linux-c8b09f6fb67df7fc1b51ced1037fa9b677428149.zip | |
scsi: don't set tagging state from scsi_adjust_queue_depth
Remove the tagged argument from scsi_adjust_queue_depth, and just let it
handle the queue depth. For most drivers those two are fairly separate,
given that most modern drivers don't care about the SCSI "tagged" status
of a command at all, and many old drivers allow queuing of multiple
untagged commands in the driver.
Instead we start out with the ->simple_tags flag set before calling
->slave_configure, which is how all drivers actually looking at
->simple_tags except for one worke anyway. The one other case looks
broken, but I've kept the behavior as-is for now.
Except for that we only change ->simple_tags from the ->change_queue_type,
and when rejecting a tag message in a single driver, so keeping this
churn out of scsi_adjust_queue_depth is a clear win.
Now that the usage of scsi_adjust_queue_depth is more obvious we can
also remove all the trivial instances in ->slave_alloc or ->slave_configure
that just set it to the cmd_per_lun default.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/aic7xxx')
| -rw-r--r-- | drivers/scsi/aic7xxx/aic79xx_osm.c | 7 | ||||
| -rw-r--r-- | drivers/scsi/aic7xxx/aic7xxx_osm.c | 8 |
2 files changed, 4 insertions, 11 deletions
diff --git a/drivers/scsi/aic7xxx/aic79xx_osm.c b/drivers/scsi/aic7xxx/aic79xx_osm.c index 9fd6b5618b25..80cb4fd7caaa 100644 --- a/drivers/scsi/aic7xxx/aic79xx_osm.c +++ b/drivers/scsi/aic7xxx/aic79xx_osm.c @@ -1469,11 +1469,8 @@ ahd_platform_set_tags(struct ahd_softc *ahd, struct scsi_device *sdev, switch ((dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED))) { case AHD_DEV_Q_BASIC: - scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TASK, - dev->openings + dev->active); - break; case AHD_DEV_Q_TAGGED: - scsi_adjust_queue_depth(sdev, MSG_ORDERED_TASK, + scsi_adjust_queue_depth(sdev, dev->openings + dev->active); break; default: @@ -1483,7 +1480,7 @@ ahd_platform_set_tags(struct ahd_softc *ahd, struct scsi_device *sdev, * serially on the controller/device. This should * remove some latency. */ - scsi_adjust_queue_depth(sdev, 0, 1); + scsi_adjust_queue_depth(sdev, 1); break; } } diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.c b/drivers/scsi/aic7xxx/aic7xxx_osm.c index f18b6d69d3fb..a6a27d5398dd 100644 --- a/drivers/scsi/aic7xxx/aic7xxx_osm.c +++ b/drivers/scsi/aic7xxx/aic7xxx_osm.c @@ -1335,13 +1335,9 @@ ahc_platform_set_tags(struct ahc_softc *ahc, struct scsi_device *sdev, } switch ((dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED))) { case AHC_DEV_Q_BASIC: - scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TASK, - dev->openings + dev->active); - break; case AHC_DEV_Q_TAGGED: - scsi_adjust_queue_depth(sdev, MSG_ORDERED_TASK, + scsi_adjust_queue_depth(sdev, dev->openings + dev->active); - break; default: /* * We allow the OS to queue 2 untagged transactions to @@ -1349,7 +1345,7 @@ ahc_platform_set_tags(struct ahc_softc *ahc, struct scsi_device *sdev, * serially on the controller/device. This should * remove some latency. */ - scsi_adjust_queue_depth(sdev, 0, 2); + scsi_adjust_queue_depth(sdev, 2); break; } } |