On Thu, May 13, 2021 at 1:32 AM Luben Tuikov <luben.tuikov@xxxxxxx> wrote:
>
> On QUERY2 IOCTL don't query counts of correctable
> and uncorrectable errors, since when RAS is
> enabled and supported on Vega20 server boards,
> this takes insurmountably long time, in O(n^3),
> which slows the system down to the point of it
> being unusable when we have GUI up.
>
> Fixes: ae363a212b14 ("drm/amdgpu: Add a new flag to AMDGPU_CTX_OP_QUERY_STATE2")
> Cc: Alexander Deucher <Alexander.Deucher@xxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Luben Tuikov <luben.tuikov@xxxxxxx>
Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c | 16 ----------------
> 1 file changed, 16 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
> index 01fe60fedcbe..e1557020c49d 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
> @@ -337,7 +337,6 @@ static int amdgpu_ctx_query2(struct amdgpu_device *adev,
> {
> struct amdgpu_ctx *ctx;
> struct amdgpu_ctx_mgr *mgr;
> - unsigned long ras_counter;
>
> if (!fpriv)
> return -EINVAL;
> @@ -362,21 +361,6 @@ static int amdgpu_ctx_query2(struct amdgpu_device *adev,
> if (atomic_read(&ctx->guilty))
> out->state.flags |= AMDGPU_CTX_QUERY2_FLAGS_GUILTY;
>
> - /*query ue count*/
> - ras_counter = amdgpu_ras_query_error_count(adev, false);
> - /*ras counter is monotonic increasing*/
> - if (ras_counter != ctx->ras_counter_ue) {
> - out->state.flags |= AMDGPU_CTX_QUERY2_FLAGS_RAS_UE;
> - ctx->ras_counter_ue = ras_counter;
> - }
> -
> - /*query ce count*/
> - ras_counter = amdgpu_ras_query_error_count(adev, true);
> - if (ras_counter != ctx->ras_counter_ce) {
> - out->state.flags |= AMDGPU_CTX_QUERY2_FLAGS_RAS_CE;
> - ctx->ras_counter_ce = ras_counter;
> - }
> -
> mutex_unlock(&mgr->lock);
> return 0;
> }
> --
> 2.31.1.527.g2d677e5b15
>
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