From c52a7419af18594426bc601d1ea346dbbcf71e28 Mon Sep 17 00:00:00 2001 From: Len Brown Date: Tue, 14 Aug 2007 15:49:32 -0400 Subject: ACPI: thermal: create "thermal.crt=C" bootparam Some hardware will malfunction at a temperature below the BIOS provided critical shutdown threshold. This hook allows moving the critical trip points down to a temperature which provokes a graceful shutdown before the hardware malfunction. http://bugzilla.kernel.org/show_bug.cgi?id=8884 WARNING: A trip-point override will not get noticed until the system delivers a temperature change event, or unless thermal zone polling is enabled. eg. "thermal.tzp=10" Signed-off-by: Len Brown --- Documentation/kernel-parameters.txt | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'Documentation') diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 975f029be25c..18dcfdd29df0 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -1826,6 +1826,10 @@ and is between 256 and 4096 characters. It is defined in the file -1: disable all active trip points in all thermal zones : override all lowest active trip points + thermal.crt= [HW,ACPI] + -1: disable all critical trip points in all thermal zones + : lower all critical trip points + thermal.nocrt= [HW,ACPI] Set to disable actions on ACPI thermal zone critical and hot trip points. -- cgit v1.2.1