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[SCSI] modify change_queue_depth to take in reason why it is being called

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This patch modifies scsi_host_template->change_queue_depth so that
it takes an argument indicating why it is being called. This will be
used so that if a LLD needs to do some extra processing when
handling queue fulls or later ramp ups, it can do so.

This is a simple port of the drivers setting a change_queue_depth
callback. In the patch I just have these LLDs adjust the queue depth
if the user was requesting it.

Signed-off-by: Mike Christie <[email protected]>

[Vasu.Dev: v2
	Also converted pmcraid_change_queue_depth and then verified
all modules compile  using "make allmodconfig" for any new build
warnings on X86_64.

	Updated original description after combing two original
patches from Mike to make this patch git bisectable.]
Signed-off-by: Vasu Dev <[email protected]>
[jejb: fixed up 53c700]
Signed-off-by: James Bottomley <[email protected]>
This commit is contained in:
Mike Christie 2009-10-15 17:46:39 -07:00 • committed by James Bottomley
commit e881a172da
27 changed files with 119 additions and 32 deletions
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9
drivers/message/fusion/mptscsih.c
View file

@ -2351,11 +2351,12 @@ mptscsih_slave_destroy(struct scsi_device *sdev)
* mptscsih_change_queue_depth - This function will set a devices queue depth
* @sdev: per scsi_device pointer
* @qdepth: requested queue depth
* @reason: calling context
*
* Adding support for new 'change_queue_depth' api.
*/
int
mptscsih_change_queue_depth(struct scsi_device *sdev, int qdepth)
mptscsih_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason)
{
MPT_SCSI_HOST *hd = shost_priv(sdev->host);
VirtTarget *vtarget;
@ -2367,6 +2368,9 @@ mptscsih_change_queue_depth(struct scsi_device *sdev, int qdepth)
starget = scsi_target(sdev);
vtarget = starget->hostdata;
if (reason != SCSI_QDEPTH_DEFAULT)
return -EOPNOTSUPP;
if (ioc->bus_type == SPI) {
if (!(vtarget->tflags & MPT_TARGET_FLAGS_Q_YES))
max_depth = 1;
@ -2433,7 +2437,8 @@ mptscsih_slave_configure(struct scsi_device *sdev)
ioc->name, vtarget->negoFlags, vtarget->maxOffset,
vtarget->minSyncFactor));
mptscsih_change_queue_depth(sdev, MPT_SCSI_CMD_PER_DEV_HIGH);
mptscsih_change_queue_depth(sdev, MPT_SCSI_CMD_PER_DEV_HIGH,
SCSI_QDEPTH_DEFAULT);
dsprintk(ioc, printk(MYIOC_s_DEBUG_FMT
"tagged %d, simple %d, ordered %d\n",
ioc->name,sdev->tagged_supported, sdev->simple_tags,

3
drivers/message/fusion/mptscsih.h
View file

@ -128,7 +128,8 @@ extern int mptscsih_taskmgmt_complete(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_F
extern int mptscsih_scandv_complete(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *r);
extern int mptscsih_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply);
extern int mptscsih_ioc_reset(MPT_ADAPTER *ioc, int post_reset);
extern int mptscsih_change_queue_depth(struct scsi_device *sdev, int qdepth);
extern int mptscsih_change_queue_depth(struct scsi_device *sdev, int qdepth,
int reason);
extern u8 mptscsih_raid_id_to_num(MPT_ADAPTER *ioc, u8 channel, u8 id);
extern int mptscsih_is_phys_disk(MPT_ADAPTER *ioc, u8 channel, u8 id);
extern struct device_attribute *mptscsih_host_attrs[];