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ACPI: processor: change acpi_processor_set_pdc() interface

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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>
This commit is contained in:
Alex Chiang 2009-12-20 12:23:16 -07:00 • committed by Len Brown
parent b9c2db7834
commit 43bab25ced
3 changed files with 5 additions and 17 deletions
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2
include/acpi/processor.h
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@ -323,7 +323,7 @@ static inline int acpi_processor_get_bios_limit(int cpu, unsigned int *limit)
#endif /* CONFIG_CPU_FREQ */
/* in processor_pdc.c */
void acpi_processor_set_pdc(struct acpi_processor *pr);
void acpi_processor_set_pdc(acpi_handle handle);
/* in processor_throttling.c */
int acpi_processor_tstate_has_changed(struct acpi_processor *pr);