From 6bb2ff846f24fa6efee756e5e2a2b8433d65671e Mon Sep 17 00:00:00 2001 From: Fenghua Yu Date: Tue, 21 May 2013 15:35:17 -0400 Subject: x86 thermal: Disable power limit notification interrupt by default The package power limit notification interrupt is primarily for system diagnosis, and should not be blindly enabled on every system by default -- particuarly since Linux does nothing in the handler except count how many times it has been called... Add a new kernel cmdline parameter "int_pln_enable" for situations where users want to oberve these events via existing system counters: $ grep TRM /proc/interrupts $ grep . /sys/devices/system/cpu/cpu*/thermal_throttle/* https://bugzilla.kernel.org/show_bug.cgi?id=36182 Signed-off-by: Fenghua Yu Signed-off-by: Len Brown Signed-off-by: Tony Luck --- Documentation/kernel-parameters.txt | 2 ++ 1 file changed, 2 insertions(+) (limited to 'Documentation') diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 6e3b18a8afc6..a7a1f34be4c9 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -1158,6 +1158,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted. inport.irq= [HW] Inport (ATI XL and Microsoft) busmouse driver Format: + int_pln_enable [x86] Enable power limit notification interrupt + intel_iommu= [DMAR] Intel IOMMU driver (DMAR) option on Enable intel iommu driver. -- cgit v1.2.3