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930c68180f
The memory clock-rate change could be running on a non-boot CPU, while the boot CPU handles the EMC interrupt. This introduces an unnecessary latency since boot CPU should handle the interrupt and then notify the sibling CPU about clock-rate change completion. In some rare cases boot CPU could be in uninterruptible state for a significant time (like in a case of KASAN + NFS root), it could get to the point that completion timeouts before boot CPU gets a chance to handle interrupt. The solution is to get rid of the completion and replace it with interrupt-status polling. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com> |
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| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
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| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
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| 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.