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The pointer used to walk the table of move ops and pick the right one for the current GPU was declared static, meaning its state was carried over between invocations of the function, and also made the function non-rentrant and thread-unsafe. Since the table is ordered such that newer GPU methods are listed first, the result of this was that initializing newer GPUs after older GPUs would result in no suitable ttm move acceleration operations being found, and ttm would fall back to CPU blits on the older GPUs. This change declares the walking pointer separately from the table and makes it non-static to fix the logic. Signed-off-by: James Jones <jajones@nvidia.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com> |
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| init | ||
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| kernel | ||
| lib | ||
| LICENSES | ||
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| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
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| Kbuild | ||
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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.