From: Damien Le Moal <damien.lemoal@wdc.com>
To: Jens Axboe <axboe@kernel.dk>, linux-ide@vger.kernel.org
Cc: linux-block@vger.kernel.org
Subject: [PATCH v7 10/11] docs: sysfs-block-device: improve ncq_prio_enable documentation
Date: Mon, 16 Aug 2021 10:44:55 +0900 [thread overview]
Message-ID: <20210816014456.2191776-11-damien.lemoal@wdc.com> (raw)
In-Reply-To: <20210816014456.2191776-1-damien.lemoal@wdc.com>
From: Niklas Cassel <niklas.cassel@wdc.com>
NCQ priority is an optional feature of the NCQ feature set and should
not be confused with the NCQ feature set itself. Clarify the
description of the ncq_prio_enable attribute to avoid this confusion.
Also add the missing documentation for the equivalent
sas_ncq_prio_enable attribute.
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
---
Documentation/ABI/testing/sysfs-block-device | 20 +++++++++++++++++---
1 file changed, 17 insertions(+), 3 deletions(-)
diff --git a/Documentation/ABI/testing/sysfs-block-device b/Documentation/ABI/testing/sysfs-block-device
index aa0fb500e3c9..cf1013df4b92 100644
--- a/Documentation/ABI/testing/sysfs-block-device
+++ b/Documentation/ABI/testing/sysfs-block-device
@@ -55,6 +55,20 @@ Date: Oct, 2016
KernelVersion: v4.10
Contact: linux-ide@vger.kernel.org
Description:
- (RW) Write to the file to turn on or off the SATA ncq (native
- command queueing) support. By default this feature is turned
- off.
+ (RW) Write to the file to turn on or off the SATA NCQ (native
+ command queueing) priority support. By default this feature is
+ turned off. If the device does not support the SATA NCQ
+ priority feature, writing "1" to this file results in an error.
+
+
+What: /sys/block/*/device/sas_ncq_prio_enable
+Date: Oct, 2016
+KernelVersion: v4.10
+Contact: linux-ide@vger.kernel.org
+Description:
+ (RW) This is the equivalent of the ncq_prio_enable attribute
+ file for SATA devices connected to a SAS host-bus-adapter
+ (HBA) implementing support for the SATA NCQ priority feature.
+ This file does not exist if the HBA driver does not implement
+ support for the SATA NCQ priority feature, regardless of the
+ device support for this feature.
--
2.31.1
next prev parent reply other threads:[~2021-08-16 1:45 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-16 1:44 [PATCH v7 00/11] libata cleanups and improvements Damien Le Moal
2021-08-16 1:44 ` [PATCH v7 01/11] libata: fix ata_host_alloc_pinfo() Damien Le Moal
2021-08-16 5:53 ` Hannes Reinecke
2021-08-16 11:29 ` James Bottomley
2021-08-16 11:43 ` Damien Le Moal
2021-08-16 1:44 ` [PATCH v7 02/11] libata: fix ata_host_start() Damien Le Moal
2021-08-16 1:44 ` [PATCH v7 03/11] libata: simplify ata_scsi_rbuf_fill() Damien Le Moal
2021-08-16 1:44 ` [PATCH v7 04/11] libata: cleanup device sleep capability detection Damien Le Moal
2021-08-16 1:44 ` [PATCH v7 05/11] libata: cleanup ata_dev_configure() Damien Le Moal
2021-08-16 1:44 ` [PATCH v7 06/11] libata: cleanup NCQ priority handling Damien Le Moal
2021-08-16 1:44 ` [PATCH v7 07/11] libata: fix ata_read_log_page() warning Damien Le Moal
2021-08-16 1:44 ` [PATCH v7 08/11] libata: print feature list on device scan Damien Le Moal
2021-08-16 1:44 ` [PATCH v7 09/11] libata: Introduce ncq_prio_supported sysfs sttribute Damien Le Moal
2021-08-16 5:54 ` Hannes Reinecke
2021-08-16 1:44 ` Damien Le Moal [this message]
2021-08-16 5:54 ` [PATCH v7 10/11] docs: sysfs-block-device: improve ncq_prio_enable documentation Hannes Reinecke
2021-08-16 1:44 ` [PATCH v7 11/11] docs: sysfs-block-device: document ncq_prio_supported Damien Le Moal
2021-08-16 5:55 ` Hannes Reinecke
2021-08-18 9:54 ` [PATCH v7 00/11] libata cleanups and improvements Damien Le Moal
2021-08-18 13:20 ` Jens Axboe
2021-08-18 21:53 ` Damien Le Moal
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