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80eb865768
Concerning the comment associated to the atomic_fetch_andnot() in nohz_idle_balance(), Vincent explains [1]: "[...] the comment is useless and can be removed [...] it was referring to a line code above the comment that was present in a previous iteration of the patchset. This line disappeared in final version but the comment has stayed." So remove the comment. Vincent also points out that the full ordering associated to the atomic_fetch_andnot() primitive could be relaxed, but this patch insists on the current more conservative/fully ordered solution: "Performance" isn't a concern, stay away from "correctness"/subtle relaxed (re)ordering if possible..., just make sure not to confuse the next reader with misleading/out-of-date comments. [1] http://lkml.kernel.org/r/CAKfTPtBjA-oCBRkO6__npQwL3+HLjzk7riCcPU1R7YdO-EpuZg@mail.gmail.com Suggested-by: Vincent Guittot <vincent.guittot@linaro.org> Signed-off-by: Andrea Parri <andrea.parri@amarulasolutions.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20181127110110.5533-1-andrea.parri@amarulasolutions.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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| README | ||
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.