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mpt2sas: 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 16:40:33 -04:00 committed by Christoph Hellwig
parent 2e45c8b754
commit 90f951edb7
1 changed files with 3 additions and 6 deletions
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9
drivers/scsi/mpt2sas/mpt2sas_scsih.c
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@ -3950,9 +3950,9 @@ _scsih_setup_direct_io(struct MPT2SAS_ADAPTER *ioc, struct scsi_cmnd *scmd,
* SCSI_MLQUEUE_HOST_BUSY if the entire host queue is full
*/
static int
_scsih_qcmd_lck(struct scsi_cmnd *scmd, void (*done)(struct scsi_cmnd *))
_scsih_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
{
struct MPT2SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
struct MPT2SAS_DEVICE *sas_device_priv_data;
struct MPT2SAS_TARGET *sas_target_priv_data;
struct _raid_device *raid_device;
@ -3960,7 +3960,6 @@ _scsih_qcmd_lck(struct scsi_cmnd *scmd, void (*done)(struct scsi_cmnd *))
u32 mpi_control;
u16 smid;
scmd->scsi_done = done;
sas_device_priv_data = scmd->device->hostdata;
if (!sas_device_priv_data || !sas_device_priv_data->sas_target) {
scmd->result = DID_NO_CONNECT << 16;
@ -4036,7 +4035,7 @@ _scsih_qcmd_lck(struct scsi_cmnd *scmd, void (*done)(struct scsi_cmnd *))
MPT_TARGET_FLAGS_RAID_COMPONENT)
mpi_request->Function = MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH;
else
mpi_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
mpi_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
mpi_request->DevHandle =
cpu_to_le16(sas_device_priv_data->sas_target->handle);
mpi_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
@ -4080,8 +4079,6 @@ _scsih_qcmd_lck(struct scsi_cmnd *scmd, void (*done)(struct scsi_cmnd *))
return SCSI_MLQUEUE_HOST_BUSY;
}
static DEF_SCSI_QCMD(_scsih_qcmd)
/**
* _scsih_normalize_sense - normalize descriptor and fixed format sense data
* @sense_buffer: sense data returned by target