From: Felix Kuehling <Felix.Kuehling@amd.com> To: amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Cc: Alex Sierra <alex.sierra@amd.com> Subject: [PATCH 28/34] drm/amdgpu: svm bo enable_signal call condition Date: Wed, 14 Apr 2021 21:23:31 -0400 [thread overview] Message-ID: <20210415012337.1755-29-Felix.Kuehling@amd.com> (raw) In-Reply-To: <20210415012337.1755-1-Felix.Kuehling@amd.com> From: Alex Sierra <alex.sierra@amd.com> [why] To support svm bo eviction mechanism. [how] If the BO crated has AMDGPU_AMDKFD_CREATE_SVM_BO flag set, enable_signal callback will be called inside amdgpu_evict_flags. This also causes gutting of the BO by removing all placements, so that TTM won't actually do an eviction. Instead it will discard the memory held by the BO. This is needed for HMM migration to user mode system memory pages. Signed-off-by: Alex Sierra <alex.sierra@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> --- drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index a66a51301643..f5ca9b8d54a3 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -111,6 +111,20 @@ static void amdgpu_evict_flags(struct ttm_buffer_object *bo, } abo = ttm_to_amdgpu_bo(bo); + if (abo->flags & AMDGPU_AMDKFD_CREATE_SVM_BO) { + struct dma_fence *fence; + struct dma_resv *resv = &bo->base._resv; + + rcu_read_lock(); + fence = rcu_dereference(resv->fence_excl); + if (fence && !fence->ops->signaled) + dma_fence_enable_sw_signaling(fence); + + placement->num_placement = 0; + placement->num_busy_placement = 0; + rcu_read_unlock(); + return; + } switch (bo->mem.mem_type) { case AMDGPU_PL_GDS: case AMDGPU_PL_GWS: -- 2.31.1 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
WARNING: multiple messages have this Message-ID (diff)
From: Felix Kuehling <Felix.Kuehling@amd.com> To: amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Cc: Alex Sierra <alex.sierra@amd.com> Subject: [PATCH 28/34] drm/amdgpu: svm bo enable_signal call condition Date: Wed, 14 Apr 2021 21:23:31 -0400 [thread overview] Message-ID: <20210415012337.1755-29-Felix.Kuehling@amd.com> (raw) In-Reply-To: <20210415012337.1755-1-Felix.Kuehling@amd.com> From: Alex Sierra <alex.sierra@amd.com> [why] To support svm bo eviction mechanism. [how] If the BO crated has AMDGPU_AMDKFD_CREATE_SVM_BO flag set, enable_signal callback will be called inside amdgpu_evict_flags. This also causes gutting of the BO by removing all placements, so that TTM won't actually do an eviction. Instead it will discard the memory held by the BO. This is needed for HMM migration to user mode system memory pages. Signed-off-by: Alex Sierra <alex.sierra@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> --- drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index a66a51301643..f5ca9b8d54a3 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -111,6 +111,20 @@ static void amdgpu_evict_flags(struct ttm_buffer_object *bo, } abo = ttm_to_amdgpu_bo(bo); + if (abo->flags & AMDGPU_AMDKFD_CREATE_SVM_BO) { + struct dma_fence *fence; + struct dma_resv *resv = &bo->base._resv; + + rcu_read_lock(); + fence = rcu_dereference(resv->fence_excl); + if (fence && !fence->ops->signaled) + dma_fence_enable_sw_signaling(fence); + + placement->num_placement = 0; + placement->num_busy_placement = 0; + rcu_read_unlock(); + return; + } switch (bo->mem.mem_type) { case AMDGPU_PL_GDS: case AMDGPU_PL_GWS: -- 2.31.1 _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx
next prev parent reply other threads:[~2021-04-15 1:25 UTC|newest] Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-04-15 1:23 [PATCH 00/34] Add HMM-based SVM memory manager to KFD v5 Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 01/34] drm/amdkfd: helper to convert gpu id and idx Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 02/34] drm/amdkfd: add svm ioctl API Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 03/34] drm/amdkfd: register svm range Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 04/34] drm/amdkfd: add svm ioctl GET_ATTR op Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 05/34] drm/amdgpu: add common HMM get pages function Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 06/34] drm/amdkfd: support larger svm range allocation Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 07/34] drm/amdkfd: validate svm range system memory Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 08/34] drm/amdkfd: deregister svm range Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 09/34] drm/amdgpu: export vm update mapping interface Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 10/34] drm/amdkfd: map svm range to GPUs Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 11/34] drm/amdkfd: svm range eviction and restore Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 12/34] drm/amdgpu: Enable retry faults unconditionally on Aldebaran Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 13/34] drm/amdkfd: add xnack enabled flag to kfd_process Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 14/34] drm/amdkfd: add ioctl to configure and query xnack retries Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 15/34] drm/amdkfd: register HMM device private zone Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 16/34] drm/amdkfd: validate vram svm range from TTM Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 17/34] drm/amdkfd: support xgmi same hive mapping Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 18/34] drm/amdkfd: copy memory through gart table Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 19/34] drm/amdkfd: HMM migrate ram to vram Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 20/34] drm/amdkfd: HMM migrate vram to ram Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 21/34] drm/amdkfd: invalidate tables on page retry fault Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 22/34] drm/amdgpu: enable 48-bit IH timestamp counter Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 23/34] drm/amdkfd: page table restore through svm API Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 24/34] drm/amdkfd: SVM API call to restore page tables Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 25/34] drm/amdkfd: add svm_bo reference for eviction fence Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 26/34] drm/amdgpu: add param bit flag to create SVM BOs Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 27/34] drm/amdkfd: add svm_bo eviction mechanism support Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling [this message] 2021-04-15 1:23 ` [PATCH 28/34] drm/amdgpu: svm bo enable_signal call condition Felix Kuehling 2021-04-15 1:23 ` [PATCH 29/34] drm/amdgpu: add svm_bo eviction to enable_signal cb Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 30/34] drm/amdkfd: refine migration policy with xnack on Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 31/34] drm/amdkfd: add svm range validate timestamp Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 32/34] drm/amdkfd: multiple gpu migrate vram to vram Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 33/34] drm/amdkfd: Add SVM API support capability bits Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling 2021-04-15 1:23 ` [PATCH 34/34] drm/amdkfd: Add CONFIG_HSA_AMD_SVM Felix Kuehling 2021-04-15 1:23 ` Felix Kuehling -- strict thread matches above, loose matches on Subject: below -- 2021-04-06 1:45 [PATCH 00/34] Add HMM-based SVM memory manager to KFD v4 Felix Kuehling 2021-04-06 1:46 ` [PATCH 28/34] drm/amdgpu: svm bo enable_signal call condition Felix Kuehling 2021-04-06 1:46 ` Felix Kuehling
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