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[ Upstream commitd2098b4440] Kim reported that perf-ftrace made his box unhappy. It turns out that commit:ff5c4f5cad("rcu/tree: Mark the idle relevant functions noinstr") removed one too many notrace qualifiers, probably due to there not being a helpful comment. This commit therefore reinstates the notrace and adds a comment to avoid losing it again. [ paulmck: Apply Steven Rostedt's feedback on the comment. ] Fixes:ff5c4f5cad("rcu/tree: Mark the idle relevant functions noinstr") Reported-by: Kim Phillips <kim.phillips@amd.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.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.