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c951587585
When the rcutree.use_softirq kernel boot parameter is set to zero, all RCU_SOFTIRQ processing is carried out by the per-CPU rcuc kthreads. If these kthreads are being starved, quiescent states will not be reported, which in turn means that the grace period will not end, which can in turn trigger RCU CPU stall warnings. This commit therefore dumps stack traces of stalled CPUs' rcuc kthreads, which can help identify what is preventing those kthreads from running. Suggested-by: Ammar Faizi <ammarfaizi2@gnuweeb.org> Reviewed-by: Ammar Faizi <ammarfaizi2@gnuweeb.org> Signed-off-by: Zqiang <qiang1.zhang@intel.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> |
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| certs | ||
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| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
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| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
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| Makefile | ||
| 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.