diff options
| author | Bart Van Assche <[email protected]> | 2022-07-26 15:52:21 -0700 |
|---|---|---|
| committer | Martin K. Petersen <[email protected]> | 2022-08-01 19:27:49 -0400 |
| commit | 86a44f045b8cbfd885b7425f4cd8a1c353593057 (patch) | |
| tree | b2010d413a740796678c49d9438cc3b938a20ccd /tools/testing/selftests/bpf/progs/test_autoload.c | |
| parent | f00e0d7714895d10790e2bac4df00727ddb9abff (diff) | |
scsi: ufs: core: Increase the maximum data buffer size
Measurements for one particular UFS controller + UFS device show a 25%
higher read bandwidth if the maximum data buffer size is increased from 512
KiB to 1 MiB. Hence increase the maximum size of the data buffer associated
with a single request from SCSI_DEFAULT_MAX_SECTORS (1024) * 512 bytes =
512 KiB to 1 MiB.
Notes:
- The maximum data buffer size supported by the UFSHCI specification
is 65535 * 256 KiB or about 16 GiB.
- The maximum data buffer size for READ(10) commands is 65535 logical
blocks. To transfer more than 65535 * 4096 bytes = 255 MiB with a single
SCSI command, the READ(16) command is required. Support for READ(16) is
optional in the UFS 3.1 and UFS 4.0 standards.
Link: https://lore.kernel.org/r/[email protected]
Cc: Adrian Hunter <[email protected]>
Cc: Avri Altman <[email protected]>
Cc: Bean Huo <[email protected]>
Cc: Stanley Chu <[email protected]>
Tested-by: Avri Altman <[email protected]>
Acked-by: Avri Altman <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
Diffstat (limited to 'tools/testing/selftests/bpf/progs/test_autoload.c')
0 files changed, 0 insertions, 0 deletions