linux-kernel - Re: MCP limit log messages, 2.6.36-rc4

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Message-ID: <4CA2190D.4010205@canonical.com>
Date:	Tue, 28 Sep 2010 10:34:21 -0600
From:	Tim Gardner <tim.gardner@...onical.com>
To:	Jesse Barnes <jbarnes@...tuousgeek.org>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: MCP limit log messages, 2.6.36-rc4

On 09/24/2010 10:18 AM, Jesse Barnes wrote:
> On Fri, 24 Sep 2010 06:46:45 +0800
> Tim Gardner<tim.gardner@...onical.com>  wrote:
>> Its just a debug hack which I wrote (that I mentioned in the first
>> email) so I could figure out why the driver was complaining.
>
> Oh sorry, missed that.  An upstream patch for that would be welcome as
> well.
>
>> I'll be back from Asia by Monday and will give these patches a try.
>
> Great, as I said you may still see spurious "over power" conditions,
> but that's due to a bug in the i915 driver.
>

With these 3 patches applied the MCP log message noise goes away. The 
4th patch (also applied) is the debug patch mentioned in my first email 
(if you're still interested in it). This is on top of Linus tree at 
830c55a673537ca33ef4689fb5f20c2d66d98519 (plus some Ubuntu cruft).

The only 'intel ips' messages left in the log are these:

intel ips 0000:00:1f.6: Warning: CPU TDP doesn't match expected value 
(found 25, expected 35)
intel ips 0000:00:1f.6: PCI INT C -> GSI 18 (level, low) -> IRQ 18
intel ips 0000:00:1f.6: IPS driver initialized, MCP temp limit 95

rtg
-- 
Tim Gardner tim.gardner@...onical.com

View attachment "0001-drm-i915-fix-GMCH-power-reporting.patch" of type "text/x-patch" (1477 bytes)

View attachment "0002-IPS-driver-don-t-toggle-CPU-turbo-on-unsupported-CPU.patch" of type "text/x-patch" (2199 bytes)

View attachment "0003-IPS-driver-verify-BIOS-provided-limits.patch" of type "text/x-patch" (2080 bytes)

View attachment "0004-intel_ips-Print-overage-values.patch" of type "text/x-patch" (1635 bytes)