Long radeon stalls on recent kernels

[Michel Dänzer]

On 09.12.2014 09:24, Andy Lutomirski wrote:
> 
> The relevant line from latencytop seems to be:
> 
> 154 20441402 489139 radeon_fence_default_wait [radeon]
> fence_wait_timeout ttm_bo_wait [ttm] ttm_bo_move_accel_cleanup [ttm]
> radeon_move_blit.isra.12 [radeon] radeon_bo_move [radeon]
> ttm_bo_handle_move_mem [ttm] ttm_bo_evict [ttm] ttm_mem_evict_first
> [ttm] ttm_bo_mem_space [ttm] ttm_bo_validate [ttm]
> radeon_bo_fault_reserve_notify [radeon]

Which process is this?

Looks like CPU access to a BO in VRAM, but the BO is located outside of
the CPU visible area of VRAM, so it has to be moved into the CPU visible
area first.

Which version of Mesa are you using?


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer