I did some source comparison between suse and vanilla 2.6.25.5 kernels.
The ./drivers/acpi/processor_thermal.c and processor_throttling.c were
identical. Thermal.c were different (vanilla on the left):
[EMAIL PROTECTED]:~/Desktop/linux-2.6.25.5/drivers/acpi> diff thermal.c
thermal.cs
443,445c443
< if (ACPI_FAILURE(status))
< tz->trips.passive.flags.valid = 0;
< else
---
> if (ACPI_SUCCESS(status)) {
447,452c445,454
<
< if (memcmp(&tz->trips.passive.devices, &devices,
< sizeof(struct acpi_handle_list))) {
< memcpy(&tz->trips.passive.devices, &devices,
< sizeof(struct acpi_handle_list));
< ACPI_THERMAL_TRIPS_EXCEPTION(flag, "device");
---
> if (memcmp(&tz->trips.passive.devices, &devices,
> sizeof(struct acpi_handle_list))) {
> memcpy(&tz->trips.passive.devices, &devices,
> sizeof(struct acpi_handle_list));
> ACPI_THERMAL_TRIPS_EXCEPTION(flag, "device");
> }
> } else {
> tz->trips.passive.flags.valid = 0;
> ACPI_EXCEPTION((AE_INFO, status, "Invalid passiv trip"
> " point\n"));
I can't read this but hopefully this would suggest something. Especially
since thermal.c contains these lines further down:
/* take no action if nocrt is set */
if(!nocrt) {
printk(KERN_EMERG
"Critical temperature reached (%ld C), shutting
down.\n",
KELVIN_TO_CELSIUS(tz->temperature));
orderly_poweroff(true);
}
Another point: THRC critical point on my system is 97C. 90C is PASSIVE, but I
get shutdowns at 90C. That may also mean kernel confuses CRITICAL with PASSIVE!
--
CPU overheats during high usage "throttling <not supported>"
https://bugs.launchpad.net/bugs/22336
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