diff options
| author | Tom Wu <tomwu@mellanox.com> | 2019-08-08 02:22:36 +0000 |
|---|---|---|
| committer | Sagi Grimberg <sagi@grimberg.me> | 2019-08-29 12:55:01 -0700 |
| commit | 3bec2e3754becebd4c452999adb49bc62c575ea4 (patch) | |
| tree | 0d234578c9db81b179f17200a649638e236852f9 /drivers/nvme | |
| parent | 1a9460cef571100487cde9c44110a5afff2e9ea2 (diff) | |
| download | linux-3bec2e3754becebd4c452999adb49bc62c575ea4.tar.gz | |
nvmet: fix data units read and written counters in SMART log
In nvme spec 1.3 there is a definition for data write/read counters
from SMART log, (See section 5.14.1.2):
This value is reported in thousands (i.e., a value of 1
corresponds to 1000 units of 512 bytes read) and is rounded up.
However, in nvme target where value is reported with actual units,
but not thousands of units as the spec requires.
Signed-off-by: Tom Wu <tomwu@mellanox.com>
Reviewed-by: Israel Rukshin <israelr@mellanox.com>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Diffstat (limited to 'drivers/nvme')
| -rw-r--r-- | drivers/nvme/target/admin-cmd.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/nvme/target/admin-cmd.c b/drivers/nvme/target/admin-cmd.c index 4dc12ea52f23..51800a9ce9a9 100644 --- a/drivers/nvme/target/admin-cmd.c +++ b/drivers/nvme/target/admin-cmd.c @@ -81,9 +81,11 @@ static u16 nvmet_get_smart_log_nsid(struct nvmet_req *req, goto out; host_reads = part_stat_read(ns->bdev->bd_part, ios[READ]); - data_units_read = part_stat_read(ns->bdev->bd_part, sectors[READ]); + data_units_read = DIV_ROUND_UP(part_stat_read(ns->bdev->bd_part, + sectors[READ]), 1000); host_writes = part_stat_read(ns->bdev->bd_part, ios[WRITE]); - data_units_written = part_stat_read(ns->bdev->bd_part, sectors[WRITE]); + data_units_written = DIV_ROUND_UP(part_stat_read(ns->bdev->bd_part, + sectors[WRITE]), 1000); put_unaligned_le64(host_reads, &slog->host_reads[0]); put_unaligned_le64(data_units_read, &slog->data_units_read[0]); @@ -111,11 +113,11 @@ static u16 nvmet_get_smart_log_all(struct nvmet_req *req, if (!ns->bdev) continue; host_reads += part_stat_read(ns->bdev->bd_part, ios[READ]); - data_units_read += - part_stat_read(ns->bdev->bd_part, sectors[READ]); + data_units_read += DIV_ROUND_UP( + part_stat_read(ns->bdev->bd_part, sectors[READ]), 1000); host_writes += part_stat_read(ns->bdev->bd_part, ios[WRITE]); - data_units_written += - part_stat_read(ns->bdev->bd_part, sectors[WRITE]); + data_units_written += DIV_ROUND_UP( + part_stat_read(ns->bdev->bd_part, sectors[WRITE]), 1000); } rcu_read_unlock(); |