drm, bpf: User drm_mm in bpf #8003
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added 2 commits
November 4, 2024 11:52
Move drm_mm.c to lib. The next commit will use drm_mm to manage memory regions in bpf arena. Move drm_mm_print to drivers/gpu/drm/drm_print.c, since it's not a core functionality of drm_mm and it depeneds on drm_printer while drm_mm is generic and usuable as-is by other subsystems. Also add __maybe_unused to suppress compiler warnings. Update MAINTAINERS file as well. Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Kumar Kartikeya Dwivedi <[email protected]>
bpf arena is moving towards non-sleepable allocations in tracing context while maple_tree does kmalloc/kfree deep inside. Hence switch bpf arena to drm_mm algorithm that works with externally provided drm_mm_node-s. This patch kmalloc/kfree-s drm_mm_node-s, but the next patch will switch to bpf_mem_alloc and preallocated drm_mm_node-s. Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Kumar Kartikeya Dwivedi <[email protected]>
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Pull request for series with
subject: drm, bpf: User drm_mm in bpf
version: 1
url: https://patchwork.kernel.org/project/netdevbpf/list/?series=905590