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linux/drivers/acpi
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Len Brown eaca2d3f6c ACPI: delete un-reliable concept of cooling mode 
The scheme where the thermal driver displayed the
cooling mode /proc/acpi/thermal_zone/*/cooling_mode
was flawed in two ways.

First, the success of _SCP doesn't actually mean
that the BIOS moved any trip points.
On many BIOS, _SCP is present, but does nothing.
So displaying what _SCP executed actually
was wrong more times than it was right.

Second, examining the relative position of the
trip points when the thermal_zone is added
is insufficient -- as the BIOS reserves the right
to change the trip points at run-time.

The only reliable way for the user to determine if
the thermal zone is in active, passive, or critical
mode is to examine the relative position of the trip points.
The user can do this without the kernel doing it
for them by looking in /proc/acpi/thermal_zone/*/trip_points

New contents for /proc/acpi/thermal_zone/*/cooling_mode:

If _SCP available:
"0 - Active; 1 - Passive\n"

If _SCP unavailable:
"<setting not supported>\n"

Signed-off-by: Len Brown <len.brown@intel.com>
2007-04-30 23:27:43 -04:00
..
dispatcher ACPICA: fix AML mutex re-entrancy 2007-02-15 16:13:16 -05:00
events ACPICA: revert "acpi_serialize" changes 2007-03-15 04:10:36 -04:00
executer ACPICA: revert "acpi_serialize" changes 2007-03-15 04:10:36 -04:00
hardware ACPI: resolve HP nx6125 S3 immediate wakeup regression 2007-03-12 14:49:26 -04:00
namespace ACPICA: revert "acpi_serialize" changes 2007-03-15 04:10:36 -04:00
parser ACPICA: Update copyright to 2007. 2007-02-02 21:14:31 -05:00
resources ACPI: fix boot hang w/o "noapic" on MSI MS-6390-L 2007-03-08 03:42:42 -05:00
sleep Pull bugzilla-7887 into release branch 2007-02-16 22:11:57 -05:00
tables ACPI: acpi_unload_table_id() always returns error 2007-02-16 18:34:40 -05:00
utilities ACPICA: fix AML mutex re-entrancy 2007-02-15 16:13:16 -05:00
ac.c ACPI: delete extra #defines in /drivers/acpi/ drivers 2007-02-12 23:50:52 -05:00
acpi_memhotplug.c ACPI: delete extra #defines in /drivers/acpi/ drivers 2007-02-12 23:50:52 -05:00
asus_acpi.c backlight: Separate backlight properties from backlight ops pointers 2007-02-20 09:26:53 +00:00
battery.c Pull bugzilla-7200 into release branch 2007-02-16 22:11:37 -05:00
bay.c Pull fluff into release branch 2007-02-16 22:10:32 -05:00
blacklist.c ACPI: make blacklist more verbose 2007-03-09 21:19:05 -05:00
bus.c Pull bugzilla-7887 into release branch 2007-02-16 22:11:57 -05:00
button.c ACPI: delete extra #defines in /drivers/acpi/ drivers 2007-02-12 23:50:52 -05:00
cm_sbs.c ACPI: clean up ACPI_MODULE_NAME() use 2007-02-12 22:42:12 -05:00
container.c ACPI: delete extra #defines in /drivers/acpi/ drivers 2007-02-12 23:50:52 -05:00
debug.c ACPI: clean up ACPI_MODULE_NAME() use 2007-02-12 22:42:12 -05:00
dock.c ACPI: delete extra #defines in /drivers/acpi/ drivers 2007-02-12 23:50:52 -05:00
ec.c ACPI: ec: fix race in status register access 2007-03-09 23:16:23 -05:00
event.c ACPI: clean up ACPI_MODULE_NAME() use 2007-02-12 22:42:12 -05:00
fan.c ACPI: delete extra #defines in /drivers/acpi/ drivers 2007-02-12 23:50:52 -05:00
glue.c ACPI: remove non-PNPACPI version of get_rtc_dev() 2007-02-15 22:46:42 -05:00
i2c_ec.c Pull fluff into release branch 2007-02-16 22:10:32 -05:00
i2c_ec.h ACPI: add support for Smart Battery 2006-07-01 16:36:14 -04:00
ibm_acpi.c ACPI: ibm-acpi: allow module to load when acpi notifiers can't be set (v2) 2007-03-16 01:07:18 -04:00
Kconfig Pull misc-for-upstream into release branch 2007-03-09 23:19:50 -05:00
Makefile ACPI: hotkey: remove driver, per feature-removal-schedule.txt 2007-02-16 21:45:57 -05:00
numa.c ACPI: acpi_table_parse_madt_family() is not MADT specific 2007-02-13 02:58:52 -05:00
osl.c Pull remove-hotkey into release branch 2007-02-16 22:11:02 -05:00
pci_bind.c ACPI: clean up ACPI_MODULE_NAME() use 2007-02-12 22:42:12 -05:00
pci_irq.c ACPI: clean up ACPI_MODULE_NAME() use 2007-02-12 22:42:12 -05:00
pci_link.c ACPI: delete extra #defines in /drivers/acpi/ drivers 2007-02-12 23:50:52 -05:00
pci_root.c ACPI: delete extra #defines in /drivers/acpi/ drivers 2007-02-12 23:50:52 -05:00
power.c Pull misc-for-upstream into release branch 2007-03-09 23:19:50 -05:00
processor_core.c Pull fluff into release branch 2007-02-16 22:10:32 -05:00
processor_idle.c [PATCH] i386: add command line option "local_apic_timer_c2_ok" 2007-03-23 10:21:02 -07:00
processor_perflib.c ACPI: delete extra #defines in /drivers/acpi/ drivers 2007-02-12 23:50:52 -05:00
processor_thermal.c ACPI: delete extra #defines in /drivers/acpi/ drivers 2007-02-12 23:50:52 -05:00
processor_throttling.c ACPI: delete extra #defines in /drivers/acpi/ drivers 2007-02-12 23:50:52 -05:00
sbs.c Pull bugzilla-7897 into release branch 2007-02-16 22:12:04 -05:00
scan.c ACPI: delete extra #defines in /drivers/acpi/ drivers 2007-02-12 23:50:52 -05:00
system.c ACPI: delete extra #defines in /drivers/acpi/ drivers 2007-02-12 23:50:52 -05:00
tables.c Revert "ACPI: parse 2nd MADT by default" 2007-03-30 14:16:10 -04:00
thermal.c ACPI: delete un-reliable concept of cooling mode 2007-04-30 23:27:43 -04:00
toshiba_acpi.c backlight: Separate backlight properties from backlight ops pointers 2007-02-20 09:26:53 +00:00
utils.c ACPI: clean up ACPI_MODULE_NAME() use 2007-02-12 22:42:12 -05:00
video.c ACPI: video: Fix spelling and grammar mistakes 2007-03-09 21:37:07 -05:00