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2dc8903af7
Add a per-CHPID binary sysfs attribute named "ext_measurement" that provides access to extended channel-path-measurement data for the associated channel path. Note that while not all channel-paths provide extended measurement data this attribute is created unconditionally for all channel paths because channel-path measurement capabilities might change during run-time. Reading from the attribute will only return data for channel-paths that support extended measurement data. Example: $ echo 1 > /sys/devices/css0/cm_enable $ xxd /sys/devices/css0/chp0.32/ext_measurement 00000000: 53e0 8002 0000 0095 0000 0000 59cc e034 S...........Y..4 00000010: 38b8 cc45 0000 0000 0000 0000 3e24 fe94 8..E........>$.. 00000020: 0000 0000 0000 0000 0000 0000 0000 0000 ................ 00000030: 0000 0000 0000 0000 0000 0000 0000 0000 ................ Reviewed-by: Vineeth Vijayan <vneethv@linux.ibm.com> Tested-by: Vineeth Vijayan <vneethv@linux.ibm.com> Acked-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com> Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com> |
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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.