From: Chris Wilson <chris@chris-wilson.co.uk>
To: Daniel Vetter <daniel@ffwll.ch>
Cc: intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH] drm/i915: Reinstate order of operations in {intel, logical}_ring_begin()
Date: Tue, 16 Jun 2015 13:24:31 +0100 [thread overview]
Message-ID: <20150616122431.GC11933@nuc-i3427.alporthouse.com> (raw)
In-Reply-To: <20150616121855.GT23637@phenom.ffwll.local>
On Tue, Jun 16, 2015 at 02:18:55PM +0200, Daniel Vetter wrote:
> Maybe someone should look at per-buffer locks before trying to split up
> the low-level hw locks ;-)
Per-vm then per-buffer. Adding more locked operations to execbuf is
scary though, with some workloads perf highlights the cost of the atomic
for an uncontested mutex as being where the majority of the time is
going.
At this point I am questing perf, but it is the last remaining locked
instruction in that path...
-Chris
--
Chris Wilson, Intel Open Source Technology Centre
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prev parent reply other threads:[~2015-06-16 12:24 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-08 18:51 [PATCH] drm/i915: Reinstate order of operations in {intel, logical}_ring_begin() Dave Gordon
2015-06-13 20:16 ` shuang.he
2015-06-15 9:15 ` Chris Wilson
2015-06-15 18:11 ` Dave Gordon
2015-06-15 20:41 ` Chris Wilson
2015-06-16 11:03 ` Dave Gordon
2015-06-16 12:18 ` Daniel Vetter
2015-06-16 12:24 ` Chris Wilson [this message]
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