kernel/linux.git/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.h, branch v7.2-rc1

drm/amdgpu: deprecate guilty handling

2026-06-04T19:24:29+00:00

The guilty handling tried to establish a second way of signaling problems with the GPU back to userspace. This caused quite a bunch of issue we had to work around, especially lifetime issues with the drm_sched_entity. Just drop the handling altogether and use the dma_fence based approach instead. v2: fix reversed condition in entity check (Alex) Reviewed-by: Alex Deucher Signed-off-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: Remove duplicate struct member

2026-02-23T19:16:31+00:00

Struct amdgpu_ctx contains two copies of the pointer to the context manager. Remove one. Signed-off-by: Tvrtko Ursulin Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: Remove a few holes from struct amdgpu_ctx

2026-02-23T19:16:31+00:00

Re-order the struct members a bit to avoid some holes: /* size: 408, cachelines: 7, members: 15 */ /* sum members: 393, holes: 4, sum holes: 15 */ /* last cacheline: 24 bytes */ /* size: 400, cachelines: 7, members: 15 */ /* sum members: 393, holes: 1, sum holes: 7 */ /* last cacheline: 16 bytes */ While doing so we notice a duplicate but will address than in the following patch. Signed-off-by: Tvrtko Ursulin Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: Make amdgpu_ctx_mgr_entity_fini static

2025-05-22T16:02:21+00:00

Function amdgpu_ctx_mgr_entity_fini() only has a single local caller so lets make it local. Reviewed-by: Christian König Signed-off-by: Tvrtko Ursulin Cc: Alex Deucher Cc: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: add VM generation token

2023-06-15T15:37:55+00:00

Instead of using the VRAM lost counter add a 64bit token which indicates if a context or job is still valid to use. Should the VRAM be lost or the page tables need re-creation the token will change indicating that userspace needs to act and re-create the contexts and re-submit the work. Signed-off-by: Christian König Reviewed-by: Luben Tuikov Signed-off-by: Alex Deucher

drm/amdgpu: keep amdgpu_ctx_mgr in ctx structure

2023-06-09T13:59:37+00:00

Keep amdgpu_ctx_mgr in ctx structure to track fpriv. v2: add missing fpriv declaration lost in rebase Signed-off-by: James Zhu Acked-by: Lijo Lazar Signed-off-by: Alex Deucher

drm/amdgpu: revert "partial revert "remove ctx->lock" v2"

2022-09-13T18:33:01+00:00

This reverts commit 94f4c4965e5513ba624488f4b601d6b385635aec. We found that the bo_list is missing a protection for its list entries. Since that is fixed now this workaround can be removed again. Signed-off-by: Christian König Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher

drm/amdgpu: Convert to common fdinfo format v5

2022-05-26T18:56:34+00:00

Convert fdinfo format to one documented in drm-usage-stats.rst. It turned out that the existing implementation was actually completely nonsense. The calculated percentages indeed represented the usage of the engine, but with varying time slices. So 10% usage for application A could mean something completely different than 10% usage for application B. Completely nuke that and just use the now standardized nanosecond interface. v2: drop the documentation change for now, nuke percentage calculation v3: only account for each hw_ip, move the time_spend to the ctx mgr. v4: move general ctx changes into separate patch, rework the fdinfo to ctx_mgr interface so that all usages are calculated at once, drop some unecessary and dangerous refcount dance. v5: add one more comment how we calculate the time spend Signed-off-by: Tvrtko Ursulin Signed-off-by: Christian König Reviewed-by: Shashank Sharma Cc: Daniel Vetter Signed-off-by: Alex Deucher

drm/amdgpu: cleanup ctx implementation

2022-05-26T18:56:31+00:00

Let each context have a pointer to the ctx manager and properly initialize the adev pointer inside the context manager. Reduce the BUG_ON() in amdgpu_ctx_add_fence() into a WARN_ON() and directly return the sequence number instead of writing into a parmeter. Signed-off-by: Christian König Reviewed-by: Shashank Sharma Signed-off-by: Alex Deucher

drm/amdgpu: partial revert "remove ctx->lock" v2

2022-04-21T09:26:20+00:00

This reverts commit 461fa7b0ac565ef25c1da0ced31005dd437883a7. We are missing some inter dependencies here so re-introduce the lock until we have figured out what's missing. Just drop/retake it while adding dependencies. v2: still drop the lock while adding dependencies Signed-off-by: Christian König Tested-by: Mikhail Gavrilov (v1) Fixes: 461fa7b0ac56 ("drm/amdgpu: remove ctx->lock") Acked-by: Alex Deucher Link: https://patchwork.freedesktop.org/patch/msgid/20220419110633.166236-1-christian.koenig@amd.com