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char/bsr: add sysfs interface documentation 

Descriptions have collected from code comments and by reading through
code.

Signed-off-by: Aishwarya Pant <aishpant@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Aishwarya Pant 2018-03-01 23:55:59 +05:30 committed by Jonathan Corbet
parent 014d8fd880
commit 2ddf0d6559
1 changed files with 25 additions and 0 deletions
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Documentation/ABI/testing/sysfs-class-bsr Normal file
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What: /sys/class/bsr/bsr*/bsr_size
Date: Jul, 2008
KernelVersion: 2.6.27
Contact: Arnd Bergmann <arnd@arndb.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Description:
(RO) Size of the barrier-synchronization register (BSR)
register in bytes.
What: /sys/class/bsr/bsr*/bsr_length
Date: Jul, 2008
KernelVersion: 2.6.27
Contact: Arnd Bergmann <arnd@arndb.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Description:
(RO) The length of memory region that can be mapped in bytes.
What: /sys/class/bsr/bsr*/bsr_stride
Date: Jul, 2008
KernelVersion: 2.6.27
Contact: Arnd Bergmann <arnd@arndb.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Description:
(RO) The stride or the interval at which the allocated BSR bytes
repeat within the mapping.