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3d05031ae6
Currently, nocb_gp_wait() unconditionally complains if there is a callback not already associated with a grace period. This assumes that either there was no such callback initially on the one hand, or that the rcu_advance_cbs() function assigned all such callbacks to a grace period on the other. However, in theory there are some situations that would prevent rcu_advance_cbs() from assigning all of the callbacks. This commit therefore checks for unassociated callbacks immediately after rcu_advance_cbs() returns, while the corresponding rcu_node structure's ->lock is still held. If there are unassociated callbacks at that point, the subsequent WARN_ON_ONCE() is disabled. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> |
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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.