linux-kernel - RE: [PATCH 3/9] [SCSI] mvsas: Add driver version and interrupt coalescing to device attributes in sysfs

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Date:	Thu, 26 May 2011 20:23:18 -0700
From:	Xiangliang Yu <yuxiangl@...vell.com>
To:	Greg KH <greg@...ah.com>
CC:	"James.Bottomley@...e.de" <James.Bottomley@...e.de>,
	"jslaby@...e.cz" <jslaby@...e.cz>,
	"linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Jacky Feng <jfeng@...vell.com>
Subject: RE: [PATCH 3/9] [SCSI] mvsas: Add driver version and interrupt
 coalescing to device 	attributes in sysfs

> >>Subject: Re: [PATCH 3/9] [SCSI] mvsas: Add driver version and interrupt >>>coalescing to device attributes in sysfs

> >>On Thu, May 26, 2011 at 02:00:21AM -0700, Xiangliang Yu wrote:
> >
> >Subject: Re: [PATCH 3/9] [SCSI] mvsas: Add driver version and interrupt >coalescing to device attributes in sysfs
> >> 
> >> -- Add support for driver version and interrupt coalescing device attributes.
> >>
> >>When you add a sysfs file, you must also add a Documentation/ABI file as
> >>well.  Please do that here.
> >
> >These device attributes are sysft class properties for the scsi host,
>> and the sysfs files are within scsi host sysfs directory. so, do you
>> think I need add a ABI file?  and , I can't find anything about scsi
>> host sysfs file under directory Documentation/ABI.

>Yes, again, if you add a sysfs file, you need to add documentation
>explaining exactly what it is there for and what it does.
>
>And if there isn't already a file for this device, then please add it.
How about this:

.../ABI/testing/sysfs-bus-pci-scsi-devices-mvsas   |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)
 create mode 100644 Documentation/ABI/testing/sysfs-bus-pci-scsi-devices-mvsas

diff --git a/Documentation/ABI/testing/sysfs-bus-pci-scsi-devices-mvsas b/Documentation/ABI/testing/sysfs-bus-pci-scsi
-devices-mvsas
new file mode 100644
index 0000000..45f597e
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-pci-scsi-devices-mvsas
@@ -0,0 +1,13 @@
+What:          /sys/devices/pci/<devices>/<dev>/host/scsi_host/host/driver_version
+Date:          May 2011
+Kernel Version:        2.6.39
+Contact:       yuxiangl@...vell.com
+Description:   Display the mvsas drivers version
+
+What:          /sys/devices/pci/<devices>/<dev>/host/scsi_host/host/interrupt_coalescing
+Date:          May 2011
+Kernel Version:        2.6.39
+Contact:       yuxiangl@...vell.com
+Description:   Determines the maximum time the 88SE94XX waits after the occurrence of a
+               Command Done before generating an interrupt.The maximum number of the 
+               variable is less than 0x10000.
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