b9bf42d3e1
Mesa expects to be able to map the same buffer, without unmapping it. This leads to problem on long-running program. On the other hand, libdrm uses cpu_map_count as a refcount and expects its value to decrease so it can unmap buffers. The previoulsy proprosed fix (https://patchwork.freedesktop.org/patch/258005/) stopped increased the counter when it went past INT_MAX. This commit instead proposes to use a larger type to store cpu_map_count. The outcome is the same: long running apps will not crash, only the implementation differs. Closes: https://gitlab.freedesktop.org/mesa/mesa/issues/1423 Reviewed-by: Michel Dänzer <mdaenzer@redhat.com> Reviewed-by: Marek Olšák <marek.olsak@amd.com> |
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| .gitlab-ci | ||
| amdgpu | ||
| android | ||
| data | ||
| etnaviv | ||
| exynos | ||
| freedreno | ||
| include/drm | ||
| intel | ||
| libkms | ||
| man | ||
| nouveau | ||
| omap | ||
| radeon | ||
| tegra | ||
| tests | ||
| vc4 | ||
| .editorconfig | ||
| .gitignore | ||
| .gitlab-ci.yml | ||
| Android.common.mk | ||
| Android.mk | ||
| CONTRIBUTING.rst | ||
| CleanSpec.mk | ||
| Makefile.sources | ||
| README.rst | ||
| RELEASING | ||
| core-symbols.txt | ||
| libdrm.pc.in | ||
| libdrm_lists.h | ||
| libdrm_macros.h | ||
| libsync.h | ||
| meson.build | ||
| meson_options.txt | ||
| symbols-check.py | ||
| util_double_list.h | ||
| util_math.h | ||
| xf86atomic.h | ||
| xf86drm.c | ||
| xf86drm.h | ||
| xf86drmHash.c | ||
| xf86drmHash.h | ||
| xf86drmMode.c | ||
| xf86drmMode.h | ||
| xf86drmRandom.c | ||
| xf86drmRandom.h | ||
| xf86drmSL.c | ||
README.rst
libdrm - userspace library for drm
----------------------------------
This is libdrm, a userspace library for accessing the DRM, direct rendering
manager, on Linux, BSD and other operating systems that support the ioctl
interface.
The library provides wrapper functions for the ioctls to avoid exposing the
kernel interface directly, and for chipsets with drm memory manager, support
for tracking relocations and buffers.
New functionality in the kernel DRM drivers typically requires a new libdrm,
but a new libdrm will always work with an older kernel.
libdrm is a low-level library, typically used by graphics drivers such as
the Mesa drivers, the X drivers, libva and similar projects.
Compiling
---------
To set up meson:
meson builddir/
By default this will install into /usr/local, you can change your prefix
with --prefix=/usr (or `meson configure builddir/ -Dprefix=/usr` after
the initial meson setup).
Then use ninja to build and install:
ninja -C builddir/ install
If you are installing into a system location you will need to run install
separately, and as root.