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| author | Kashyap Desai <kashyap.desai@broadcom.com> | 2021-01-22 10:33:14 +0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-03-04 17:37:00 -0500 |
| commit | 6cb9b15238a389a8892a6ed08f5c68a0ac45d720 (patch) | |
| tree | 5a5bef9c2bb36e77e80fb5256474745cd1ef24c0 /drivers/scsi/megaraid/megaraid_sas.h | |
| parent | 9ebb4d70dc0e0e8989a13d156020db9d55fcfafd (diff) | |
| download | lwn-6cb9b15238a389a8892a6ed08f5c68a0ac45d720.tar.gz lwn-6cb9b15238a389a8892a6ed08f5c68a0ac45d720.zip | |
scsi: megaraid_sas: Replace sdev_busy with local counter
Use local tracking of per-sdev outstanding command since sdev_busy in SCSI
mid layer is improved for performance reason using sbitmap (earlier it was
atomic variable).
Link: https://lore.kernel.org/r/20210122023317.687987-11-ming.lei@redhat.com
Cc: Omar Sandoval <osandov@fb.com>
Cc: Kashyap Desai <kashyap.desai@broadcom.com>
Cc: Sumanesh Samanta <sumanesh.samanta@broadcom.com>
Cc: Ewan D. Milne <emilne@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/megaraid/megaraid_sas.h')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h index 0f808d63580e..0c6a56b24c6e 100644 --- a/drivers/scsi/megaraid/megaraid_sas.h +++ b/drivers/scsi/megaraid/megaraid_sas.h @@ -2019,10 +2019,12 @@ union megasas_frame { * struct MR_PRIV_DEVICE - sdev private hostdata * @is_tm_capable: firmware managed tm_capable flag * @tm_busy: TM request is in progress + * @sdev_priv_busy: pending command per sdev */ struct MR_PRIV_DEVICE { bool is_tm_capable; bool tm_busy; + atomic_t sdev_priv_busy; atomic_t r1_ldio_hint; u8 interface_type; u8 task_abort_tmo; |