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From: Heinrich Fink <heinrich.fink@daqri.com>
To: Chris Wilson <chris@chris-wilson.co.uk>, intel-gfx@lists.freedesktop.org
Subject: Re: Tracing PM-triggered GPU frequency changes from user space
Date: Tue, 14 Nov 2017 18:18:39 +0100	[thread overview]
Message-ID: <1510679919.25447.3.camel@daqri.com> (raw)
In-Reply-To: <151066218401.20436.6688554165941152565@mail.alporthouse.com>

On Tue, 2017-11-14 at 12:23 +0000, Chris Wilson wrote:
> What is a PM-triggered change of gpu freq? Do you mean when the hw
> itself throttles depending on thermal load.

yes, that's what I meant. Apologies for not being clear about this.

> Then no. Best you can do is
> use the i915 pmu interface to watch real vs requested.

Are you referring to the patch series "i915 PMU and engine busy stats"
[0]?

Thanks,

Heinrich

[0] https://patchwork.freedesktop.org/series/27488/
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  reply	other threads:[~2017-11-14 17:18 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-14 12:19 Tracing PM-triggered GPU frequency changes from user space Heinrich Fink
2017-11-14 12:23 ` Chris Wilson
2017-11-14 17:18   ` Heinrich Fink [this message]
2017-11-14 17:32     ` Chris Wilson

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