linux/tools/testing/selftests/dmabuf-heaps, branch master

selftests: complete kselftest include centralization

2025-11-27T22:24:31Z

This follow-up patch completes centralization of kselftest.h and ksefltest_harness.h includes in remaining seltests files, replacing all relative paths with a non-relative paths using shared -I include path in lib.mk Tested with gcc-13.3 and clang-18.1, and cross-compiled successfully on riscv, arm64, x86_64 and powerpc arch. [reddybalavignesh9979@gmail.com: add selftests include path for kselftest.h] Link: https://lkml.kernel.org/r/20251017090201.317521-1-reddybalavignesh9979@gmail.com Link: https://lkml.kernel.org/r/20251016104409.68985-1-reddybalavignesh9979@gmail.com Signed-off-by: Bala-Vignesh-Reddy Suggested-by: Andrew Morton Link: https://lore.kernel.org/lkml/20250820143954.33d95635e504e94df01930d0@linux-foundation.org/ Reviewed-by: Wei Yang Cc: David Hildenbrand Cc: David S. Miller Cc: Eric Dumazet Cc: Günther Noack Cc: Jakub Kacinski Cc: Liam Howlett Cc: Lorenzo Stoakes Cc: Michal Hocko Cc: Mickael Salaun Cc: Ming Lei Cc: Paolo Abeni Cc: Shuah Khan Cc: Simon Horman Cc: Suren Baghdasaryan Cc: Vlastimil Babka Signed-off-by: Andrew Morton

kselftests: dmabuf-heaps: Ensure the driver name is null-terminated

2024-07-29T07:02:54Z

Even if a vgem device is configured in, we will skip the import_vgem_fd() test almost every time. TAP version 13 1..11 # Testing heap: system # ======================================= # Testing allocation and importing: ok 1 # SKIP Could not open vgem -1 The problem is that we use the DRM_IOCTL_VERSION ioctl to query the driver version information but leave the name field a non-null-terminated string. Terminate it properly to actually test against the vgem device. While at it, let's check the length of the driver name is exactly 4 bytes and return early otherwise (in case there is a name like "vgemfoo" that gets converted to "vgem\0" unexpectedly). Signed-off-by: Zenghui Yu Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20240729024604.2046-1-yuzenghui@huawei.com

selftests/dmabuf-heap: conform test to TAP format output

2024-05-06T19:57:19Z

Conform the layout, informational and status messages to TAP. No functional change is intended other than the layout of output messages. Improve the TAP messages as well. Reviewed-by: T.J. Mercier Signed-off-by: Muhammad Usama Anjum Signed-off-by: Shuah Khan

selftests: dmabuf-heap: add config file for the test

2024-03-29T19:57:14Z

The config fragment enlists all the config options needed for the test. This config is merged into the kernel's config on which this test is run. Fixed whitespace errors during commit: Shuah Khan Reviewed-by: T.J. Mercier Signed-off-by: Muhammad Usama Anjum Signed-off-by: Shuah Khan

selftests/dmabuf-heaps: add gitignore file

2023-10-05T20:22:59Z

dmabuf-heaps builds a dmabuf-heap binary that can be ignored by git. Signed-off-by: Javier Carrasco Signed-off-by: Shuah Khan

selftests: dmabuf-heaps: Fix incorrect kernel headers search path

2023-02-13T16:09:44Z

Use $(KHDR_INCLUDES) as lookup path for kernel headers. This prevents building against kernel headers from the build environment in scenarios where kernel headers are installed into a specific output directory (O=...). Signed-off-by: Mathieu Desnoyers Cc: Shuah Khan Cc: linux-kselftest@vger.kernel.org Cc: Ingo Molnar Cc: # 5.18+ Signed-off-by: Shuah Khan

kselftests: dmabuf-heaps: Add extra checking that allocated buffers are zeroed

2021-02-08T23:25:53Z

Add a check to validate that buffers allocated from the heaps are properly zeroed before being given to userland. It is done by allocating a number of buffers, and filling them with a nonzero pattern, then closing and reallocating more buffers and checking that they are all properly zeroed. This is helpful to validate any cached buffers are zeroed before being given back out. Cc: Shuah Khan Cc: Brian Starkey Cc: Sumit Semwal Cc: Laura Abbott Cc: Hridya Valsaraju Cc: Suren Baghdasaryan Cc: Sandeep Patil Cc: Daniel Mentz Cc: linux-media@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: linux-kselftest@vger.kernel.org Signed-off-by: John Stultz Signed-off-by: Shuah Khan

kselftests: dmabuf-heaps: Cleanup test output

2021-02-08T23:25:47Z

Cleanup the test output so it is a bit easier to read Cc: Shuah Khan Cc: Brian Starkey Cc: Sumit Semwal Cc: Laura Abbott Cc: Hridya Valsaraju Cc: Suren Baghdasaryan Cc: Sandeep Patil Cc: Daniel Mentz Cc: linux-media@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: linux-kselftest@vger.kernel.org Signed-off-by: John Stultz Signed-off-by: Shuah Khan

kselftests: dmabuf-heaps: Softly fail if don't find a vgem device

2021-02-08T23:25:39Z

While testing against a vgem device is helpful for testing importing they aren't always configured in, so don't make it a fatal failure. Cc: Shuah Khan Cc: Brian Starkey Cc: Sumit Semwal Cc: Laura Abbott Cc: Hridya Valsaraju Cc: Suren Baghdasaryan Cc: Sandeep Patil Cc: Daniel Mentz Cc: linux-media@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: linux-kselftest@vger.kernel.org Signed-off-by: John Stultz Signed-off-by: Shuah Khan

kselftests: dmabuf-heaps: Add clearer checks on DMABUF_BEGIN/END_SYNC

2021-02-08T23:25:25Z

Add logic to check the dmabuf sync calls succeed. Cc: Shuah Khan Cc: Brian Starkey Cc: Sumit Semwal Cc: Laura Abbott Cc: Hridya Valsaraju Cc: Suren Baghdasaryan Cc: Sandeep Patil Cc: Daniel Mentz Cc: linux-media@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: linux-kselftest@vger.kernel.org Signed-off-by: John Stultz Signed-off-by: Shuah Khan