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authorMartin K. Petersen <martin.petersen@oracle.com>2015-05-04 21:54:19 -0400
committerTejun Heo <tj@kernel.org>2015-05-05 09:30:18 -0400
commitf303074160d3401970ccae082014e1ee5a9a52c5 (patch)
treea1ab040aa04feaa3c4763779fa07b050a6434528 /Documentation/ABI
parentd7b16e4f6283c6ec52b411aa6deb02ca4d030d20 (diff)
downloadop-kernel-dev-f303074160d3401970ccae082014e1ee5a9a52c5.zip
op-kernel-dev-f303074160d3401970ccae082014e1ee5a9a52c5.tar.gz
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/ABI')
-rw-r--r--Documentation/ABI/testing/sysfs-ata11
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-ata b/Documentation/ABI/testing/sysfs-ata
index 0a93215..9231dae 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.
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