[PATCH v2 00/50] Remove the request pointer from struct scsi_cmnd · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 01/50] core: Introduce the scsi_cmd_to_rq() function · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 02/50] core: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
Re: [PATCH v2 02/50] core: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Douglas Gilbert <dgilbert@interlog.com> · 2021-05-18
Re: [PATCH v2 02/50] core: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 04/50] sr: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 03/50] sd: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 05/50] scsi_transport_fc: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 06/50] scsi_transport_spi: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 07/50] ata: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 08/50] RDMA/iser: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
Re: [PATCH v2 08/50] RDMA/iser: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Sagi Grimberg <sagi@grimberg.me> · 2021-05-18
[PATCH v2 09/50] RDMA/srp: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 10/50] zfcp: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 11/50] 53c700: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 12/50] NCR5380: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 13/50] aacraid: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 14/50] advansys: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 15/50] bnx2i: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 16/50] csiostor: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 17/50] cxlflash: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 18/50] dpt_i2o: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 19/50] fnic: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 20/50] hisi_sas: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 21/50] hpsa: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 22/50] ibmvfc: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 23/50] ibmvscsi: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 24/50] ips: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 25/50] libsas: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
Re: [PATCH v2 25/50] libsas: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · John Garry <hidden> · 2021-05-19
[PATCH v2 26/50] lpfc: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 27/50] megaraid: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
Re: [PATCH v2 27/50] megaraid: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Sumit Saxena <sumit.saxena@broadcom.com> · 2021-05-19
[PATCH v2 30/50] myrb: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 29/50] mvumi: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 28/50] mpt3sas: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 31/50] myrs: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 33/50] qedf: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 32/50] ncr53c8xx: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 35/50] qla1280: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 34/50] qedi: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 36/50] qla2xxx: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 37/50] qla4xxx: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 38/50] qlogicpti: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 39/50] scsi_debug: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 40/50] smartpqi: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 41/50] snic: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 42/50] stex: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 43/50] sun3_scsi: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 44/50] sym53c8xx: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 45/50] ufs: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 46/50] virtio_scsi: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 47/50] xen-scsifront: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
Re: [PATCH v2 47/50] xen-scsifront: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Juergen Gross <jgross@suse.com> · 2021-05-19
[PATCH v2 48/50] tcm_loop: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
Re: [PATCH v2 48/50] tcm_loop: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bodo Stroesser <bostroesser@gmail.com> · 2021-05-19
[PATCH v2 49/50] usb-storage: Use scsi_cmd_to_rq() instead of scsi_cmnd.request · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
[PATCH v2 50/50] core: Remove the request member from struct scsi_cmnd · Bart Van Assche <bvanassche@acm.org> · 2021-05-18
Re: [PATCH v2 00/50] Remove the request pointer from struct scsi_cmnd · James Bottomley <James.Bottomley@HansenPartnership.com> · 2021-05-18
Re: [PATCH v2 00/50] Remove the request pointer from struct scsi_cmnd · Bart Van Assche <bvanassche@acm.org> · 2021-05-18

Re: [PATCH v2 00/50] Remove the request pointer from struct scsi_cmnd

From: James Bottomley <James.Bottomley@HansenPartnership.com>
Date: 2021-05-18 17:55:56

On Tue, 2021-05-18 at 10:44 -0700, Bart Van Assche wrote:

Hi Martin,

This patch series implements the following two changes for all SCSI
drivers:
- Use blk_mq_rq_from_pdu() instead of the request member of struct
scsi_cmnd
  since adding an offset to a pointer is faster than pointer
indirection.

Are there any performance results to back up this assertion?  It's
quite a lot of churn so it would be nice to know it's worth it.

James

`h`	back out one level
`j`	next message in thread
`k`	previous message in thread
`l`	drill in
`Esc`	close help / fold thread tree
`?`	toggle this help