From: Eugeni Dodonov <eugeni.dodonov@linux.intel.com>
To: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH] drm/i915: expose energy counter on SNB and IVB
Date: Sun, 24 Jun 2012 20:06:31 -0300 [thread overview]
Message-ID: <4FE79D77.3030905@linux.intel.com> (raw)
In-Reply-To: <1340228938-16489-1-git-send-email-jbarnes@virtuousgeek.org>
On 06/20/2012 06:48 PM, Jesse Barnes wrote:
> On SNB and IVB, there's an MSR (also exposed through MCHBAR) we can use
> to read out the amount of energy used over time. Expose this in sysfs
> to make it easy to do power comparisons with different configurations.
>
> If the platform supports it, the file will show up under the
> drm/card0/power subdirectory of the PCI device in sysfs as gt_energy_uJ.
> The value in the file is a running total of energy (in microjoules)
> consumed by the graphics device.
>
> v2: move to sysfs (Ben, Daniel)
> expose a simple value (Chris)
> drop unrelated hunk (Ben)
>
> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
(Assuming I haven't checked all the magic register values but I trust
that they work):
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Eugeni
prev parent reply other threads:[~2012-06-24 23:04 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-20 21:48 [PATCH] drm/i915: expose energy counter on SNB and IVB Jesse Barnes
2012-06-23 2:04 ` Ben Widawsky
2012-06-24 10:01 ` Daniel Vetter
2012-06-24 23:13 ` Eugeni Dodonov
2012-06-24 23:06 ` Eugeni Dodonov [this message]
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