| Message ID | 20201129173506.738561-1-kai.heng.feng@canonical.com |
|---|---|
| Headers | show |
| Series | Prevent thermal shutdown during boot process | expand |
Acked-By: AceLan Kao <acelan.kao@canonical.com>
On 29.11.2020 19.35, Kai-Heng Feng wrote: > BugLink: https://bugs.launchpad.net/bugs/1906168 > > [Impact] > Surprising thermal shutdown at boot on Intel based mobile workstations. > > [Fix] > Since these thermal devcies are not in ACPI ThermalZone, OS shouldn't > shutdown the system. > > These critial temperatures are for usespace to handle, so let kernel > know it shouldn't handle it. > > SRU for stable kernels will be sent after the fix is in upstream. > > [Test] > Use reboot stress as a reproducer. 5% chance to see a surprising > shutdown at boot. > > With the fix applied, the thermal shutdown is no longer reproducible. > > [Where problems could occur] > For ACPI based platforms, we still have "acpitz" to protect systems from > overheating. If these acpitz sensors don't work, then the system could > face real overheating issue. > > Kai-Heng Feng (3): > UBUNTU: SAUCE: thermal: core: Add indication for userspace usage > UBUNTU: SAUCE: thermal: int340x: Indicate userspace usage > UBUNTU: SAUCE: thermal: intel: intel_pch_thermal: Indicate userspace > usage > > drivers/thermal/intel/int340x_thermal/int3400_thermal.c | 1 + > .../thermal/intel/int340x_thermal/int340x_thermal_zone.c | 1 + > drivers/thermal/intel/intel_pch_thermal.c | 6 +++++- > drivers/thermal/thermal_core.c | 3 +++ > include/linux/thermal.h | 2 ++ > 5 files changed, 12 insertions(+), 1 deletion(-) > applied to oem-5.6, thanks
BugLink: https://bugs.launchpad.net/bugs/1906168 [Impact] Surprising thermal shutdown at boot on Intel based mobile workstations. [Fix] Since these thermal devcies are not in ACPI ThermalZone, OS shouldn't shutdown the system. These critial temperatures are for usespace to handle, so let kernel know it shouldn't handle it. SRU for stable kernels will be sent after the fix is in upstream. [Test] Use reboot stress as a reproducer. 5% chance to see a surprising shutdown at boot. With the fix applied, the thermal shutdown is no longer reproducible. [Where problems could occur] For ACPI based platforms, we still have "acpitz" to protect systems from overheating. If these acpitz sensors don't work, then the system could face real overheating issue. Kai-Heng Feng (3): UBUNTU: SAUCE: thermal: core: Add indication for userspace usage UBUNTU: SAUCE: thermal: int340x: Indicate userspace usage UBUNTU: SAUCE: thermal: intel: intel_pch_thermal: Indicate userspace usage drivers/thermal/intel/int340x_thermal/int3400_thermal.c | 1 + .../thermal/intel/int340x_thermal/int340x_thermal_zone.c | 1 + drivers/thermal/intel/intel_pch_thermal.c | 6 +++++- drivers/thermal/thermal_core.c | 3 +++ include/linux/thermal.h | 2 ++ 5 files changed, 12 insertions(+), 1 deletion(-)