Messages in this thread | | | Date | Tue, 9 Dec 2003 12:25:09 +0100 | From | Pavel Machek <> | Subject | Re: Tell user when ACPI is killing machine |
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Hi!
> >> >cpufreq is not connected to acpi thermal subsystem. Dominik has some > >> >patches to change that, IIRC. > >> Is it merged into ACPI ? > > >Not yet, IIRC. It is pretty big patch. > > Would you please point out where they are? --Luming
In http://sourceforge.net/mailarchive/message.php?msg_id=6219572, Dominik wrote: [This is what I was talking about; oops, google groups does not seem to index acpi-devel :-(]. Pavel
From: Dominik Brodowski <linux@br...> [PATCHES 2.6] ACPI processor driver updates [idle,throttling,cpufreq,thermal] 2003-10-06 13:00
The following patches which - a) replace the broken ACPI CPUfreq driver with a better, flexible variant, - b) modularize the processor.c code: instead of one large file there are many small files. - c) improve passive cooling support - d) allow for easy adding of proper locking and ref-counting in processor.c have been re-diffed against linux-2.6.0-test6-bk-current and are available on my website. Len, I'll send them to you in private e-mail for easier merging later.
Please apply.
Dominik
http://www.brodo.de/patches/2003-10-06/acpi-2.6.0-test6-2-remove_previous_pstates_implementation The previous arch/i386/kernel/cpu/cpufreq/acpi.c CPUfreq driver was broken, of bad design, and needs to replaced by something better. But, as a first step, remove all parts related to P-States from ACPI code.
http://www.brodo.de/patches/2003-10-06/acpi-2.6.0-test6-2-processor_submodules Add a "submodule interface" to drivers/acpi/processor.c
It allows to create other "modules" which access the acpi_handle for the processor, and which get notified if the event value maches the value passed in acpi_processor_register_notify.
http://www.brodo.de/patches/2003-10-06/acpi-2.6.0-test6-2-processor_perflib This patch adds a new "P-States library" to drivers/acpi/
CPUfreq drivers can now easly access the contents of the _PCT and the _PSS. For example, the speedstep-centrino driver could be appended so that it passes the appropriate value to the P-States library which then evaluates _PDC, and then returns the updated _PCT and _PSS.
Also, the platform limit is now handled as a cpufreq notifier and as a call to cpufreq_policy_update.
http://www.brodo.de/patches/2003-10-06/acpi-2.6.0-test6-2-new_acpi_io_driver This re-adds the acpi P-States I/O driver. It is much smaller, leaner and cleaner.
http://www.brodo.de/patches/2003-10-06/acpi-2.6.0-test6-2-idle_submodule This moves the idle handler out of drivers/acpi/processor and into an own module.
Even if only C1 is available, it is now used. If the user prefers the default pm_idle, he can unload processor_idle, and still have the other functionality available.
http://www.brodo.de/patches/2003-10-06/acpi-2.6.0-test6-2-thermal_submodule This adds a new mechanism to manage passive cooling. Instead of hardcoded -and partly wrong- access to CPUfreq and ACPI throttling-, add a generic mechanism which other modules can register with.
http://www.brodo.de/patches/2003-10-06/acpi-2.6.0-test6-2-thermal_cpufreq Use _any_ CPUfreq driver for passive cooling. Implemented by an cpufreq policy notifier and cpufreq_update_policy.
http://www.brodo.de/patches/2003-10-06/acpi-2.6.0-test6-2-thermal_throttling Move throttling into its own submodule, and register it with the new passive cooling module. Also, the now-useless "limit" interface is removed.
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