ACPI / processor: Rework processor throttling with work_on_cpu()
acpi_processor_set_throttling() uses set_cpus_allowed_ptr() to make sure that the (struct acpi_processor)->acpi_processor_set_throttling() callback will run on the right CPU. However, the function may be called from a worker thread already bound to a different CPU in which case that won't work. Make acpi_processor_set_throttling() use work_on_cpu() as appropriate instead of abusing set_cpus_allowed_ptr(). Reported-and-tested-by:Jiri Olsa <jolsa@redhat.com> Signed-off-by:
Lan Tianyu <tianyu.lan@intel.com> Cc: All applicable <stable@vger.kernel.org> [rjw: Changelog] Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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