[Intel-gfx] [PATCH] RFC drm/i915: Slaughter the thundering i915_wait_request herd

[Gong, Zhipeng]

> -----Original Message-----
> From: Chris Wilson [mailto:chris at chris-wilson.co.uk]
> Sent: Monday, November 02, 2015 10:16 PM
> To: Gong, Zhipeng
> Cc: intel-gfx at lists.freedesktop.org; Rogozhkin, Dmitry V
> Subject: Re: [PATCH] RFC drm/i915: Slaughter the thundering
> i915_wait_request herd
> 
> On Mon, Nov 02, 2015 at 02:00:47PM +0000, Gong, Zhipeng wrote:
> > Attach the perf data for BDW async1 and async5 with or without patch.
> 
> Hmm, I can see it is the i915_spin_request() consuming the time, but I was
> hoping to get the callgraph so I could see where the call to i915_wait_request
> was originating from. Could you regenerate the perf report with -g (or maybe
> you need a slightly newer perf)?
> -Chris
> 
Chris, I dump the it to txt, but it is hard to read since the call chain is too long.
If you need the data in other format, please let me know.
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