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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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10
drivers/message/fusion/mptsas.c
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@@ -1896,7 +1896,7 @@ mptsas_slave_alloc(struct scsi_device *sdev)
}
static int
mptsas_qcmd_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
mptsas_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *SCpnt)
{
MPT_SCSI_HOST *hd;
MPT_ADAPTER *ioc;
@@ -1904,11 +1904,11 @@ mptsas_qcmd_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
if (!vdevice || !vdevice->vtarget || vdevice->vtarget->deleted) {
SCpnt->result = DID_NO_CONNECT << 16;
done(SCpnt);
SCpnt->scsi_done(SCpnt);
return 0;
}
hd = shost_priv(SCpnt->device->host);
hd = shost_priv(shost);
ioc = hd->ioc;
if (ioc->sas_discovery_quiesce_io)
@@ -1917,11 +1917,9 @@ mptsas_qcmd_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
if (ioc->debug_level & MPT_DEBUG_SCSI)
scsi_print_command(SCpnt);
return mptscsih_qcmd(SCpnt,done);
return mptscsih_qcmd(SCpnt);
}
static DEF_SCSI_QCMD(mptsas_qcmd)
/**
* mptsas_mptsas_eh_timed_out - resets the scsi_cmnd timeout
* if the device under question is currently in the