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| author | Alex Chiang <achiang@hp.com> | 2009-12-20 12:23:16 -0700 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2009-12-22 03:33:58 -0500 |
| commit | 43bab25ced218385f7e6a076c2459ea008cfd2e1 (patch) | |
| tree | 21397c7ff505b58b5d9351da7b6b9628049026ee /drivers/acpi | |
| parent | b9c2db783456bcbce31e2482214cd337528db295 (diff) | |
| download | linux-43bab25ced218385f7e6a076c2459ea008cfd2e1.tar.gz linux-43bab25ced218385f7e6a076c2459ea008cfd2e1.tar.bz2 linux-43bab25ced218385f7e6a076c2459ea008cfd2e1.zip | |
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>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/processor_core.c | 2 | ||||
| -rw-r--r-- | drivers/acpi/processor_pdc.c | 18 |
2 files changed, 4 insertions, 16 deletions
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index a19a4ff962ea..9863c98c81ba 100644 --- 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 --git a/drivers/acpi/processor_pdc.c b/drivers/acpi/processor_pdc.c index deeba22c932c..30e4dc0cdf30 100644 --- a/drivers/acpi/processor_pdc.c +++ b/drivers/acpi/processor_pdc.c @@ -125,7 +125,7 @@ acpi_processor_eval_pdc(acpi_handle handle, struct acpi_object_list *pdc_in) return status; } -void acpi_processor_set_pdc(struct acpi_processor *pr) +void acpi_processor_set_pdc(acpi_handle handle) { struct acpi_object_list *obj_list; @@ -136,7 +136,7 @@ void acpi_processor_set_pdc(struct acpi_processor *pr) if (!obj_list) return; - acpi_processor_eval_pdc(pr->handle, obj_list); + acpi_processor_eval_pdc(handle, obj_list); kfree(obj_list->pointer->buffer.pointer); kfree(obj_list->pointer); @@ -147,19 +147,7 @@ EXPORT_SYMBOL_GPL(acpi_processor_set_pdc); static acpi_status early_init_pdc(acpi_handle handle, u32 lvl, void *context, void **rv) { - struct acpi_processor pr; - - pr.handle = handle; - - /* x86 implementation looks at pr.id to determine some - * CPU capabilites. We can just hard code to 0 since we're - * assuming the CPUs in the system are homogenous and all - * have the same capabilities. - */ - pr.id = 0; - - acpi_processor_set_pdc(&pr); - + acpi_processor_set_pdc(handle); return AE_OK; } |