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fusion: Remove use of DEF_SCSI_QCMD

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Removing the host_lock from the I/O submission path gives a huge
scalability improvement.

Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Reviewed-by: Nicholas Bellinger <nab@linux-iscsi.org>
Reviewed-by: Praveen Krishnamoorthy <Praveen.krishnamoorthy@lsi.com>
Acked-by: Sreekanth Reddy <Sreekanth.reddy@lsi.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Matthew Wilcox 2014-03-27 16:40:36 -04:00 • committed by Christoph Hellwig
parent ecc3bc9825
commit a48ac9e5d4
5 changed files with 18 additions and 26 deletions
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12
drivers/message/fusion/mptspi.c
View file

@ -780,33 +780,31 @@ static int mptspi_slave_configure(struct scsi_device *sdev)
}
static int
mptspi_qcmd_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
mptspi_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *SCpnt)
{
struct _MPT_SCSI_HOST *hd = shost_priv(SCpnt->device->host);
struct _MPT_SCSI_HOST *hd = shost_priv(shost);
VirtDevice *vdevice = SCpnt->device->hostdata;
MPT_ADAPTER *ioc = hd->ioc;
if (!vdevice || !vdevice->vtarget) {
SCpnt->result = DID_NO_CONNECT << 16;
done(SCpnt);
SCpnt->scsi_done(SCpnt);
return 0;
}
if (SCpnt->device->channel == 1 &&
mptscsih_is_phys_disk(ioc, 0, SCpnt->device->id) == 0) {
SCpnt->result = DID_NO_CONNECT << 16;
done(SCpnt);
SCpnt->scsi_done(SCpnt);
return 0;
}
if (spi_dv_pending(scsi_target(SCpnt->device)))
ddvprintk(ioc, scsi_print_command(SCpnt));
return mptscsih_qcmd(SCpnt,done);
return mptscsih_qcmd(SCpnt);
}
static DEF_SCSI_QCMD(mptspi_qcmd)
static void mptspi_slave_destroy(struct scsi_device *sdev)
{
struct scsi_target *starget = scsi_target(sdev);