[PATCH] drm/amdgpu/sriov: give 8s for recover vram under RUNTIME

[Deucher, Alexander]

Reviewed-by: Alex Deucher <alexander.deucher at amd.com>


________________________________
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> on behalf of Emily Deng <Emily.Deng at amd.com>
Sent: Tuesday, August 7, 2018 10:13 PM
To: amd-gfx at lists.freedesktop.org
Cc: Deng, Emily; Liu, Monk
Subject: [PATCH] drm/amdgpu/sriov: give 8s for recover vram under RUNTIME

Modify the commit message

Extend the timeout for recovering vram bos from shadows on sr-iov
to cover the worst case scenario for timeslices and VFs

Under runtime, the wait fence time could be quite long when
other VFs are in exclusive mode. For example, for 4 VF, every
VF's exclusive timeout time is set to 3s, then the worst case is
9s. If the VF number is more than 4,then the worst case time will
be longer.
The 8s is the test data, with setting to 8s, it will pass the TDR
test for 1000 times.

SWDEV-161490

Change-Id: Ifc32d56ca7fde01b1f4fe2b0db6959b51909008a
Signed-off-by: Monk Liu <Monk.Liu at amd.com>
Signed-off-by: Emily Deng <Emily.Deng at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 1d933db..ef82ad1 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3124,7 +3124,7 @@ static int amdgpu_device_handle_vram_lost(struct amdgpu_device *adev)
         long tmo;

         if (amdgpu_sriov_runtime(adev))
-               tmo = msecs_to_jiffies(amdgpu_lockup_timeout);
+               tmo = msecs_to_jiffies(8000);
         else
                 tmo = msecs_to_jiffies(100);

--
2.7.4

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