[Intel-gfx] [PATCH] drm/i915: Add aub debug support for kernel

[Liu, Yuanhan]

On Thu, 2010-11-04 at 11:44 +0800, Liu, Yuanhan wrote:
One should do this 'echo mmiotrace > /sys/kernel/debug/tracing' to enable 
> mmio trace. 
> 
Oops, an error, it's 
$ echo mmiotrace >/sys/kernel/debug/tracing/current_tracer 

Thanks.