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| author | Martin K. Petersen <martin.petersen@oracle.com> | 2015-05-05 03:54:19 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2015-05-05 15:30:18 +0200 |
| commit | f303074160d3401970ccae082014e1ee5a9a52c5 (patch) | |
| tree | a1ab040aa04feaa3c4763779fa07b050a6434528 /Documentation | |
| parent | libata: Allow NCQ TRIM to be enabled or disabled with a module parameter (diff) | |
| download | linux-f303074160d3401970ccae082014e1ee5a9a52c5.tar.xz linux-f303074160d3401970ccae082014e1ee5a9a52c5.zip | |
libata: Expose TRIM capability in sysfs
Create a sysfs "trim" attribute for each ata_device that displays
whether DSM TRIM is "unsupported", "unqueued", "forced_unqueued"
(blacklisted) or "queued".
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-ata | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-ata b/Documentation/ABI/testing/sysfs-ata index 0a932155cbba..9231daef3813 100644 --- a/Documentation/ABI/testing/sysfs-ata +++ b/Documentation/ABI/testing/sysfs-ata @@ -90,6 +90,17 @@ gscr 130: SATA_PMP_GSCR_SII_GPIO Only valid if the device is a PM. +trim + + Shows the DSM TRIM mode currently used by the device. Valid + values are: + unsupported: Drive does not support DSM TRIM + unqueued: Drive supports unqueued DSM TRIM only + queued: Drive supports queued DSM TRIM + forced_unqueued: Drive's unqueued DSM support is known to be + buggy and only unqueued TRIM commands + are sent + spdn_cnt Number of time libata decided to lower the speed of link due to errors. |