From 90eebd37c8175cb60c99b9cd1e3f5e61eb7b7468 Mon Sep 17 00:00:00 2001 From: "Martin K. Petersen" Date: Mon, 4 May 2015 21:54:19 -0400 Subject: libata: Expose TRIM capability in sysfs [ Upstream commit f303074160d3401970ccae082014e1ee5a9a52c5 ] 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 Reviewed-by: Hannes Reinecke Signed-off-by: Tejun Heo Signed-off-by: Sasha Levin --- Documentation/ABI/testing/sysfs-ata | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'Documentation') 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. -- cgit v1.2.3