diff options
| author | Felix Kuehling <Felix.Kuehling@amd.com> | 2017-08-26 02:43:06 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-09-26 14:53:20 -0400 |
| commit | a2f14820e3493145c25095873d4a510a1b25efdc (patch) | |
| tree | 801651223be96004fc4f39ef658c3bd282311ca2 /drivers/gpu/drm/Kconfig | |
| parent | 5d86b2c391965cbcb295e8fa795276977b2a416e (diff) | |
drm/amdgpu: Track pending retry faults in IH and VM (v2)
IH tracks pending retry faults in a hash table for fast lookup in
interrupt context. Each VM has a short FIFO of pending VM faults for
processing in a bottom half.
The IH prescreening stage adds retry faults and filters out repeated
retry interrupts to minimize the impact of interrupt storms.
It's the VM's responsibility remove pending faults once they are
handled. For now this is only done when the VM is destroyed.
v2:
- Made the hash table smaller and the FIFO longer. I never want the
FIFO to fill up, because that would make prescreen take longer.
128 pending page faults should be enough to keep migrations busy.
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Christian König <christian.koenig@amd.com> (v1)
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/Kconfig')
| -rw-r--r-- | drivers/gpu/drm/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index 1989c276138c..7fb8492d8e63 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -184,6 +184,7 @@ config DRM_AMDGPU select BACKLIGHT_CLASS_DEVICE select BACKLIGHT_LCD_SUPPORT select INTERVAL_TREE + select CHASH help Choose this option if you have a recent AMD Radeon graphics card. |