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6f3136326e
Annotate the release barrier and memory clobber (in effect, producing a compiler barrier) in the publish_tail_cpu call. These barriers have the effect of ensuring that qnode attributes are all written to prior to publish the node to the waitqueue. Even while the initial write to the 'locked' attribute is guaranteed to terminate prior to the node being visible, KCSAN still complains that the write is reorderable by the compiler. Issue a kcsan_release() to inform KCSAN of the release barrier contained in publish_tail_cpu(). Signed-off-by: Rohan McLure <rmclure@linux.ibm.com> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20230510033117.1395895-3-rmclure@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 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.