On 12/21/22 06:05, Gulam Mohamed wrote:
Change the data type of start and end time IO accounting variables in,
block layer, from "unsigned long" to "u64". This is to enable nano-seconds
granularity, in next commit, for the devices whose latency is less than
milliseconds.
Changes from V2 to V3
=====================
1. Changed all the required variables data-type to u64 as part of this
first patch
2. Create a new setting '2' for iostats in sysfs in next patch
3. Change the code to get the ktime values when iostat=2 in next patch
Signed-off-by: Gulam Mohamed <gulam.moha...@oracle.com>
---
block/blk-core.c | 24 ++++++++++++------------
block/blk.h | 2 +-
drivers/block/drbd/drbd_int.h | 2 +-
drivers/block/zram/zram_drv.c | 4 ++--
drivers/md/bcache/request.c | 10 +++++-----
drivers/md/dm-core.h | 2 +-
drivers/md/dm.c | 2 +-
drivers/md/md.h | 2 +-
drivers/md/raid1.h | 2 +-
drivers/md/raid10.h | 2 +-
drivers/md/raid5.c | 2 +-
drivers/nvdimm/btt.c | 2 +-
drivers/nvdimm/pmem.c | 2 +-
include/linux/blk_types.h | 2 +-
include/linux/blkdev.h | 12 ++++++------
include/linux/part_stat.h | 2 +-
nvme-mpath now also has stats, so struct nvme_request should also be
updated.
