[PATCH 1/2] drm/amdgpu: Disable verbose for p2p dist calc

[Chen, Guchun]

This patch is: Reviewed-by: Guchun Chen <guchun.chen at amd.com>

Regards,
Guchun

-----Original Message-----
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Lijo Lazar
Sent: Wednesday, September 21, 2022 8:30 PM
To: amd-gfx at lists.freedesktop.org
Cc: Deucher, Alexander <Alexander.Deucher at amd.com>; Bai, Zoy (zoybai) <Zoy.Bai at amd.com>; Koenig, Christian <Christian.Koenig at amd.com>; Chen, Guchun <Guchun.Chen at amd.com>; Zhang, Hawking <Hawking.Zhang at amd.com>
Subject: [PATCH 1/2] drm/amdgpu: Disable verbose for p2p dist calc

Disable verbose while getting p2p distance. With verbose, it shows warning if ACS redirect is set between the devices. Adds noise to dmesg logs when a few GPU devices are on the same platform.

Example log:

amdgpu 0000:34:00.0: ACS redirect is set between the client and provider (0000:31:00.0) amdgpu 0000:34:00.0: to disable ACS redirect for this path, add the kernel parameter:
	pci=disable_acs_redir=0000:30:00.0;0000:2e:00.0;0000:33:00.0;0000:2e:10.0

Signed-off-by: Lijo Lazar <lijo.lazar at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c  | 2 +-  drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index c04ea7f1e819..f600f3a3fe50 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -5578,7 +5578,7 @@ bool amdgpu_device_is_peer_accessible(struct amdgpu_device *adev,
 		adev->gmc.aper_base + adev->gmc.aper_size - 1;
 	bool p2p_access = !adev->gmc.xgmi.connected_to_cpu &&
 			  !(pci_p2pdma_distance_many(adev->pdev,
-					&peer_adev->dev, 1, true) < 0);
+					&peer_adev->dev, 1, false) < 0);
 
 	return pcie_p2p && p2p_access && (adev->gmc.visible_vram_size &&
 		adev->gmc.real_vram_size == adev->gmc.visible_vram_size && diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
index 782cbca37538..9e2a4c552a4a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
@@ -58,7 +58,7 @@ static int amdgpu_dma_buf_attach(struct dma_buf *dmabuf,
 	struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
 	int r;
 
-	if (pci_p2pdma_distance_many(adev->pdev, &attach->dev, 1, true) < 0)
+	if (pci_p2pdma_distance_many(adev->pdev, &attach->dev, 1, false) < 0)
 		attach->peer2peer = false;
 
 	r = pm_runtime_get_sync(adev_to_drm(adev)->dev);
--
2.25.1