Re: 2.6.22 regression: thermal trip points

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To: <trenn@...>
Cc: <linux-kernel@...>, Andrew Morton <akpm@...>, <pavel@...>, <mjg59@...>, <lenb@...>, Adrian <adrian@...>, Zhang, Rui <rui.zhang@...>, Jean Delvare <khali@...>, Alexey Starikovskiy <aystarik@...>, Andi Kleen <andi@...>
Date: Thursday, August 2, 2007 - 7:32 am

Thomas Renninger wrote:
No, it is a Pentium M desktop board.:
    Chipset i915GM, FSB 533MHz, max 2GB DDR2 RAM, 2 PCI
    and 1 16x PCI Express slots, serial, parallel, usb, firewire,
    2x Marvel Gigabit Ethernet, Realtek ALC 880 sound, IDE,
    Intel SATA and SiI SATA Raid, FDC, DVI and VGA video out etc.
    Very low power consumption: ~40W to 65W for the whole system,
    except monitor.
Well, it would not be the first time to eliminate a regression by
reverting a
patch after it was accepted previously.
But I _need_ to raise the unreasonably low passive trip point. We could
decide to
protect the innocent user by allowing write access to trip_points only
after a previous

echo "I know what I am doing" >
/proc/acpi/thermal_zone/THRM/enable_really_dangerous_options

if we believe that this is a good idea ...

Andi Kleen wrote:

  > I don't think it's that unreasonable to require source code
modifications
  >  for anything that can kill hardware. At least that raises the barrier
  >  a bit and hopefully ensures people think twice about it and then really
  > only blame themselves if anything goes wrong.

Andi, would the above be mechanism sufficiently safe for your taste?

cu,
 Knut

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Messages in current thread:
2.6.22 regression: thermal trip points, Knut Petersen, (Thu Aug 2, 4:40 am)
Re: 2.6.22 regression: thermal trip points, Len Brown, (Thu Aug 2, 5:56 pm)
Re: 2.6.22 regression: thermal trip points, Knut Petersen, (Fri Aug 3, 8:53 am)
Re: 2.6.22 regression: thermal trip points, Len Brown, (Fri Aug 3, 2:30 pm)
Re: 2.6.22 regression: thermal trip points, Renato S. Yamane, (Fri Aug 3, 7:43 am)
Re: 2.6.22 regression: thermal trip points, Len Brown, (Fri Aug 3, 2:35 pm)
Re: 2.6.22 regression: thermal trip points, Andrew Morton, (Thu Aug 2, 4:52 am)
Re: 2.6.22 regression: thermal trip points, Andi Kleen, (Thu Aug 2, 6:48 am)
Re: 2.6.22 regression: thermal trip points, Pavel Machek, (Thu Aug 2, 11:55 am)
Re: 2.6.22 regression: thermal trip points, Alan Cox, (Thu Aug 2, 7:00 am)
Re: 2.6.22 regression: thermal trip points, Andi Kleen, (Thu Aug 2, 8:05 am)
Re: 2.6.22 regression: thermal trip points, Alan Cox, (Thu Aug 2, 9:04 am)
Re: 2.6.22 regression: thermal trip points, Andi Kleen, (Thu Aug 2, 9:16 am)
Re: 2.6.22 regression: thermal trip points, Pavel Machek, (Thu Aug 2, 11:57 am)
Re: 2.6.22 regression: thermal trip points, Andi Kleen, (Thu Aug 2, 2:38 pm)
Re: 2.6.22 regression: thermal trip points, Thomas Renninger, (Fri Aug 3, 7:16 am)
Re: 2.6.22 regression: thermal trip points, Len Brown, (Fri Aug 3, 2:59 pm)
Re: 2.6.22 regression: thermal trip points, Pavel Machek, (Mon Aug 6, 5:55 am)
Re: 2.6.22 regression: thermal trip points, Len Brown, (Tue Aug 7, 2:58 pm)
Re: 2.6.22 regression: thermal trip points, Pavel Machek, (Tue Aug 7, 5:49 pm)
Re: 2.6.22 regression: thermal trip points, Pavel Machek, (Mon Aug 13, 8:30 am)
Re: 2.6.22 regression: thermal trip points, Matthew Garrett, (Thu Aug 2, 2:40 pm)
Re: 2.6.22 regression: thermal trip points, Thomas Renninger, (Thu Aug 2, 5:42 am)
Re: 2.6.22 regression: thermal trip points, Knut Petersen, (Thu Aug 2, 7:32 am)
Re: 2.6.22 regression: thermal trip points, Krzysztof Halasa, (Thu Aug 2, 3:25 pm)
Re: 2.6.22 regression: thermal trip points, Pavel Machek, (Thu Aug 2, 12:07 pm)
Re: 2.6.22 regression: thermal trip points, Andi Kleen, (Thu Aug 2, 8:06 am)
Re: 2.6.22 regression: thermal trip points, Alan Cox, (Thu Aug 2, 9:06 am)
Re: 2.6.22 regression: thermal trip points, Adrian , (Thu Aug 2, 5:45 am)
Re: 2.6.22 regression: thermal trip points, Len Brown, (Thu Aug 2, 5:56 pm)
Re: 2.6.22 regression: thermal trip points, Thomas Renninger, (Thu Aug 2, 5:58 am)
Re: 2.6.22 regression: thermal trip points, Alan Cox, (Thu Aug 2, 7:02 am)
Re: 2.6.22 regression: thermal trip points, Matthew Garrett, (Thu Aug 2, 7:13 am)
Re: 2.6.22 regression: thermal trip points, Alan Cox, (Thu Aug 2, 7:59 am)
Re: 2.6.22 regression: thermal trip points, Matthew Garrett, (Thu Aug 2, 7:57 am)
Re: 2.6.22 regression: thermal trip points, Thomas Renninger, (Thu Aug 2, 8:06 am)
Re: 2.6.22 regression: thermal trip points, Matthew Garrett, (Thu Aug 2, 8:15 am)
Re: 2.6.22 regression: thermal trip points, Thomas Renninger, (Thu Aug 2, 8:35 am)
Re: 2.6.22 regression: thermal trip points, Matthew Garrett, (Thu Aug 2, 8:47 am)
Re: 2.6.22 regression: thermal trip points, Thomas Renninger, (Thu Aug 2, 7:45 am)
Re: 2.6.22 regression: thermal trip points, Matthew Garrett, (Thu Aug 2, 7:56 am)
Re: 2.6.22 regression: thermal trip points, Thomas Renninger, (Thu Aug 2, 8:42 am)
Re: 2.6.22 regression: thermal trip points, Matthew Garrett, (Thu Aug 2, 8:55 am)