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| author | Fenghua Yu <fenghua.yu@intel.com> | 2013-05-21 15:35:17 -0400 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2013-06-14 14:49:00 -0700 |
| commit | 6bb2ff846f24fa6efee756e5e2a2b8433d65671e (patch) | |
| tree | 5228c5cf075acac76a7043ec418da33056743678 /Documentation/kernel-parameters.txt | |
| parent | c81147483e525e4a471d581877d7d634591246e1 (diff) | |
| download | lwn-6bb2ff846f24fa6efee756e5e2a2b8433d65671e.tar.gz lwn-6bb2ff846f24fa6efee756e5e2a2b8433d65671e.zip | |
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 <fenghua.yu@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'Documentation/kernel-parameters.txt')
| -rw-r--r-- | Documentation/kernel-parameters.txt | 2 |
1 files changed, 2 insertions, 0 deletions
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: <irq> + int_pln_enable [x86] Enable power limit notification interrupt + intel_iommu= [DMAR] Intel IOMMU driver (DMAR) option on Enable intel iommu driver. |