ACPI: make evaluation of thermal trip points before temperature or vice versa dependant on new "temp_b4_trip" module parameter to support older AMD x86_64s
Subsystems (3)
PATCH 1/1 ACPI: make evaluation of thermal trip points before temperature or vice versa dependant on new "temp_b4_trip" module parameter to support older AMD x86_64s
This patch adds a new acpi.thermal.temp_b4_trip = 1 settting, which
causes the temperature to be set before evaluation of thermal trip points (the old default) . This mode should be selected automatically by DMI match if the system identifies as
"HPCompaq 6715b" .
Please consider applying a patch like that attached to fix the issue reported in lkml thread "Re: PROBLEM: Performance drop" recently, whereby
it was found that HP 6715b laptops ( which have 2.2Ghz dual-core AMD
x86_64 k8 CPUs) get stuck running the CPU at 800Khz and cannot switch frequency.
I have verified that this still the case with v3.4.4 tagged "stable" kernel. and with v3.5-rc6, which this is a patch against ( ie. against commit bd0a521e88aa7a06ae7aabaed7ae196ed4ad867a :
"Linux 3.5-rc6" :
Makefile +1 -1
@@ -1,7 +1,7 @@ VERSION = 3 PATCHLEVEL = 5 SUBLEVEL = 0 -EXTRAVERSION = -rc5 +EXTRAVERSION = -rc6 NAME = Saber-toothed Squirrel # *DOCUMENTATION*
drivers/acpi/thermal.c +44 -10
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Makefile +1 -1
@@ -1,7 +1,7 @@ VERSION = 3 PATCHLEVEL = 5 SUBLEVEL = 0 -EXTRAVERSION = -rc5 +EXTRAVERSION = -rc6 NAME = Saber-toothed Squirrel # *DOCUMENTATION*
drivers/acpi/thermal.c +44 -10
89 lines not on this page · raw message