From: Martin K. Petersen Date: Fri, 10 Mar 2023 02:50:53 +0000 (-0500) Subject: Merge patch series "Add poll support for hisi_sas v3 hw" X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=99e0cd4d552a152c4e453511997441d1d0dde3cc;p=linux.git Merge patch series "Add poll support for hisi_sas v3 hw" chenxiang 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 --- 99e0cd4d552a152c4e453511997441d1d0dde3cc