drm/amdkfd: fix SDMA queue counter read on non-gfx9.4.3 ASICs

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The SDMA queue counter read was dispatched by GC version: anything newer
than gfx 9.4.2 was routed to the kfd2kgd->hqd_sdma_get_counter hook.
However that hook is only implemented for gfx 9.4.3, so gfx 10.3, gfx 11
and gfx 12 fell into the else branch with a NULL hook and got
-EOPNOTSUPP. This spammed "Failed to read SDMA queue counter" on every
SDMA queue teardown and left sdma_val at 0, so the per-process SDMA
activity accounting stopped working on those ASICs.

Dispatch based on whether the hook is implemented instead of the GC
version, so ASICs without the hook keep using read_sdma_queue_counter()
as before.

Fixes: 8f09c0ec21 ("drm/amdkfd: add sdma queue counter for gfxv9.4.3")
Reviewed-by: Eric Huang <jinhuieric.huang@amd.com>
Signed-off-by: Jesse Zhang <Jesse.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Jesse Zhang 2026-06-15 18:58:09 +08:00 • committed by Alex Deucher

parent 6cfa412680

commit 296ebc46de

2 changed files with 17 additions and 23 deletions

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28

drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c

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12

drivers/gpu/drm/amd/amdkfd/kfd_process.c

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