Hi Jens, Ping On Wed, Nov 4, 2020 at 11:26 AM Weiping Zhang <zwp10758@xxxxxxxxx> wrote: > > Ping > > On Wed, Oct 28, 2020 at 6:59 AM Weiping Zhang > <zhangweiping@xxxxxxxxxxxxxx> wrote: > > > > Hi, > > > > This patchset include two patches, > > > > 01. block: fix inaccurate io_ticks > > fix the io_ticks if start a new IO and there is no inflight IO before. > > > > 02. blk-mq: break more earlier when interate hctx > > An optimization for blk_mq_queue_inflight and blk_mq_part_is_in_flight > > these two function only want to know if there is IO inflight and do > > not care how many inflight IOs are there. > > After this patch blk_mq_queue_inflight will stop interate other hctx > > when find a inflight IO, blk_mq_part_is_in_inflight stop interate > > other setbit/hctx when find a inflight IO. > > > > Changes since v4: > > * only get inflight in update_io_ticks when start a new IO every jiffy. > > > > Changes since v3: > > * add a parameter for blk_mq_queue_tag_busy_iter to break earlier > > when interate hctx of a queue, since blk_mq_part_is_in_inflight > > and blk_mq_queue_inflight do not care how many inflight IOs. > > > > Changes since v2: > > * use blk_mq_queue_tag_busy_iter framework instead of open-code. > > * update_io_ticks before update inflight for __part_start_io_acct > > > > Changes since v1: > > * avoid iterate all tagset, return directly if find a set bit. > > * fix some typo in commit message > > > > Weiping Zhang (2): > > block: fix inaccurate io_ticks > > blk-mq: break more earlier when interate hctx > > > > block/blk-core.c | 19 ++++++++++---- > > block/blk-mq-tag.c | 11 ++++++-- > > block/blk-mq-tag.h | 2 +- > > block/blk-mq.c | 58 +++++++++++++++++++++++++++++++++++++++--- > > block/blk-mq.h | 1 + > > block/blk.h | 1 + > > block/genhd.c | 13 ++++++++++ > > include/linux/blk-mq.h | 1 + > > 8 files changed, 94 insertions(+), 12 deletions(-) > > > > -- > > 2.18.4 > >
