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Some test_pages_isolated failure conditions don't include trace points. For debugging issues caused by "pinned" pages, make sure to trace all calls whether they succeed or fail. In this case, a failure case did not result in a trace point. So add the missing failure case in test_pages_isolated traces. Link: https://lkml.kernel.org/r/20210823202823.13765-1-george_davis@mentor.com Signed-off-by: George G. Davis <davis.george@siemens.com> Cc: Eugeniu Rosca <erosca@de.adit-jv.com> Cc: David Hildenbrand <david@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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 Restructured Text 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.