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58ac42f278
The current Tiny SRCU implementation of srcu_read_unlock() awakens the grace-period processing when exiting the outermost SRCU read-side critical section. However, not all Linux-kernel configurations and contexts permit swake_up_one() to be invoked while interrupts are disabled, and this can result in indefinitely extended SRCU grace periods. This commit therefore only invokes swake_up_one() when interrupts are enabled, and introduces polling to the grace-period workqueue handler. Reported-by: kernel test robot <oliver.sang@intel.com> Reported-by: Zqiang <qiang.zhang@linux.dev> Closes: https://lore.kernel.org/oe-lkp/202508261642.b15eefbb-lkp@intel.com Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Frederic Weisbecker <frederic@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 reStructuredText 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.