ACPI: processor: change acpi_processor_set_pdc() interface

When calling _PDC, we really only need the handle to the processor
to call the method; we don't look at any other parts of the
struct acpi_processor * given to us.

In the early path, when we walk the namespace, we are given the
handle directly, so just pass it through to acpi_processor_set_pdc()
without stuffing it into a wasteful struct acpi_processor allocated
on the stack each time

This saves 2834 bytes of stack.

Update the interface accordingly.

Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>

diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index a19a4ff..9863c98 100644 (file)
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -763,7 +763,7 @@ static int __cpuinit acpi_processor_add(struct acpi_device *device)
        }
 
        /* _PDC call should be done before doing anything else (if reqd.). */
-       acpi_processor_set_pdc(pr);
+       acpi_processor_set_pdc(pr->handle);
 
 #ifdef CONFIG_CPU_FREQ
        acpi_processor_ppc_has_changed(pr, 0);

diff --cc drivers/acpi/processor_pdc.c
Simple merge

diff --cc include/acpi/processor.h
Simple merge