drm/amdgpu: add synchronization among waves in the same threadgroup

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It is possible that the previous waves have exited before others are
created, so the other waves maybe reuse pyhsical resouces left by
previous ones. Therefore add barrier instruction to synchronize waves within
the same threadgroup.

Signed-off-by: Dennis Li <Dennis.Li@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Dennis Li 2021-05-08 17:10:24 +08:00 • committed by Alex Deucher

parent cbd4945ca5

commit 1acbb613c4

1 changed files with 142 additions and 134 deletions

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drivers/gpu/drm/amd/amdgpu/gfx_v9_4_2.c

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