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6d60ea03ac
Kernels built with CONFIG_PREEMPT=n and CONFIG_RCU_STRICT_GRACE_PERIOD=y report the quiescent state directly from the outermost rcu_read_unlock(). However, the current CPU's rcu_data structure's ->cpu_no_qs.b.norm might still be set, in which case rcu_report_qs_rdp() will exit early, thus failing to report quiescent state. This commit therefore causes rcu_read_unlock_strict() to clear CPU's rcu_data structure's ->cpu_no_qs.b.norm field before invoking rcu_report_qs_rdp(). Signed-off-by: Zqiang <qiang1.zhang@intel.com> 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.