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283dcc1b14
Add sysfs entry to check for write stream requests. Move existing raid_bypass_cnt into a structure named pqi_raid_io_stats and add member write_stream_cnt. These two counters are related because write stream detection is only checked if an I/O request is eligible for bypass (AIO). Example usage: lsscsi [15:1:0:0] disk Adaptec LOGICAL VOLUME 0129 /dev/sdae cat /sys/block/sdae/device/ssd_smart_path_enabled 1 ^ | +---- NOTE: here bypass has been enabled on device sdae To read the counter for parity write stream requests: cat /sys/block/sdae/device/write_stream_cnt 0x60cd507 Reviewed-by: Scott Benesh <scott.benesh@microchip.com> Reviewed-by: Mike McGowen <mike.mcgowen@microchip.com> Signed-off-by: Mahesh Rajashekhara <mahesh.rajashekhara@microchip.com> Co-developed-by: Kevin Barnett <kevin.barnett@microchip.com> Signed-off-by: Kevin Barnett <kevin.barnett@microchip.com> Signed-off-by: Don Brace <don.brace@microchip.com> Link: https://lore.kernel.org/r/20240827185501.692804-4-don.brace@microchip.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.