ACPI: Check the returned value of set_cpus_allowed_ptr before T-state operation
Now before it executes the T-state operation on one CPU, it will try to
migrate to the target CPU. Especially this is required on the system that
uses the MSR_IA32_THERMAL_CONTROL register to switch T-state.
But unfortunately it doesn't check whether the migration is successful or not.
In such case we will get/set the incorrect T-state on the offline CPU as
it fails in the migration to the offline CPU.
Signed-off-by: Zhao Yakui <[email protected]>
Signed-off-by: Len Brown <[email protected]>
1 file changed
