Re: [Bug #11875] radeonfb lockup in .28-rc (bisected)

David Miller
2008-11-14T03:05:16Z

From: David Miller <davem@davemloft.net>
Date: Thu, 13 Nov 2008 18:50:59 -0800 (PST)

> From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Date: Fri, 14 Nov 2008 11:54:20 +1100
>
> > How does it compare with not having the acceleration ?
>
> I'll find out for you.

It makes a huge difference, with the acceleration patch:

commit b1ee26bab14886350ba12a5c10cbc0696ac679bf
Author: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Wed Oct 15 22:03:46 2008 -0700

radeonfb: accelerate imageblit and other improvements

reverted, the test case takes 25 seconds or more instead of
the 7 or 8 seconds we're seeing now.