mirror of
https://github.com/torvalds/linux.git
synced 2026-08-02 05:12:01 +02:00
Linux kernel source tree
0f28cca87e
Extend KFD device topology to surface peer-to-peer links among GPU devices connected over PCIe or xGMI. Enabling HSA_AMD_P2P is REQUIRED to surface peer-to-peer links. Prior to this KFD did not expose to user mode any P2P links or indirect links that go over two or more direct hops. Old versions of the Thunk used to make up their own P2P and indirect links without the information about peer-accessibility and chipset support available to the kernel mode driver. In this patch we expose P2P links in a new sysfs directory to provide more reliable P2P link information to user mode. Old versions of the Thunk will continue to work as before and ignore the new directory. This avoids conflicts between P2P links exposed by KFD and P2P links created by the Thunk itself. New versions of the Thunk will use only the P2P links provided in the new p2p_links directory, if it exists, or fall back to the old code path on older KFDs that don't expose p2p_links. Signed-off-by: Ramesh Errabolu <Ramesh.Errabolu@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> |
||
|---|---|---|
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| 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.