[PATCH 00/24] Optimize the hot path in the UFS driver

[Bart Van Assche <bvanassche@acm.org>]

Hi Martin,

This patch series increases IOPS by 1% and reduces CPU per I/O by 10% on my
UFS 4.0 test setup. Please consider this patch series for the next merge
window.

Thanks,

Bart.

Bart Van Assche (23):
  scsi: core: Make scsi_cmd_to_rq() accept const arguments
  scsi: core: Make scsi_cmd_priv() accept const arguments
  scsi: core: Use scsi_cmd_priv() instead of open-coding it
  scsi: core: Introduce scsi_host_update_can_queue()
  scsi: ufs: core: Change the type of one ufshcd_add_cmd_upiu_trace()
    argument
  scsi: ufs: core: Only call ufshcd_add_command_trace() for SCSI
    commands
  scsi: ufs: core: Change the type of one ufshcd_add_command_trace()
    argument
  scsi: ufs: core: Change the type of one ufshcd_send_command() argument
  scsi: ufs: core: Only call ufshcd_should_inform_monitor() for SCSI
    commands
  scsi: ufs: core: Change the monitor function argument types
  scsi: ufs: core: Rework ufshcd_mcq_compl_pending_transfer()
  scsi: ufs: core: Rework ufshcd_eh_device_reset_handler()
  scsi: ufs: core: Cache the DMA buffer sizes
  scsi: ufs: core: Add an argument to ufshcd_mcq_decide_queue_depth()
  scsi: ufs: core: Add an argument to ufshcd_alloc_mcq()
  scsi: ufs: core: Call ufshcd_mcq_init() once
  scsi: ufs: core: Allocate the SCSI host earlier
  scsi: ufs: core: Call ufshcd_init_lrb() later
  scsi: ufs: core: Use hba->reserved_slot
  scsi: ufs: core: Allocate the reserved slot as a reserved request
  scsi: ufs: core: Do not clear driver-private command data
  scsi: ufs: core: Optimize the hot path
  scsi: ufs: core: Remove the ufshcd_lrb task_tag member

Hannes Reinecke (1):
  scsi: core: Implement reserved command handling

 drivers/scsi/hosts.c             |   3 +
 drivers/scsi/scsi.c              |  26 ++
 drivers/scsi/scsi_lib.c          |   6 +-
 drivers/scsi/scsi_logging.c      |  10 +-
 drivers/ufs/core/ufs-mcq.c       |  31 +-
 drivers/ufs/core/ufshcd-crypto.h |  18 +-
 drivers/ufs/core/ufshcd-priv.h   |  27 +-
 drivers/ufs/core/ufshcd.c        | 660 +++++++++++++++++--------------
 include/scsi/scsi_cmnd.h         |  17 +-
 include/scsi/scsi_host.h         |  24 +-
 include/ufs/ufshcd.h             |  11 +-
 11 files changed, 487 insertions(+), 346 deletions(-)