Merge patch series "Add poll support for hisi_sas v3 hw"

Browse source

chenxiang <chenxiang66@hisilicon.com> says:

To support IO_URING IOPOLL support for hisi_sas, we need to:

 - Add and fill mq_poll interface to poll queue;

 - Ensure internal I/Os (including internal abort I/Os) are delivered and
   completed through non-iopoll queue (queue 0);

Sending internal abort commands to non-poll queue actually requires to
sending the abort command to every queue. This carries a a risk. Make iopoll
support module parameter "experimental".

I have tested performance on v3 hw with different modes as follows.  4K
READs and 4K WRITEs both see an improvement when enabling poll mode:

			4K READ	    4K RANDREAD	    4K WRITE	4K RANDWRITE
interrupt + libaio	1770k	    1316k	    1197k	831k
interrupt + io_uring	1848k	    1390k	    1238k	857k
iopoll + io_uring	2117k	    1364k	    1874k	849k

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

...

This commit is contained in:

Martin K. Petersen 2023-03-09 21:50:53 -05:00

parent 7466a7a33f 0c2fb17011

commit 99e0cd4d55

3 changed files with 167 additions and 36 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

6

drivers/scsi/hisi_sas/hisi_sas.h

View file

95

drivers/scsi/hisi_sas/hisi_sas_main.c

View file

102

drivers/scsi/hisi_sas/hisi_sas_v3_hw.c

View file