diff options
| author | Alexey Starikovskiy <astarikovskiy@suse.de> | 2010-05-26 07:53:07 +0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2010-07-07 06:33:56 +0400 |
| commit | c45b5c097001480e66d4c523eb715ad317a4ef77 (patch) | |
| tree | 5b9415840b97a724537273db99b2c66975c63347 /drivers/acpi/acpica/nsinit.c | |
| parent | 5821f75421aa7c7bafdec291223153597f649934 (diff) | |
| download | linux-c45b5c097001480e66d4c523eb715ad317a4ef77.tar.xz | |
ACPICA: Performance enhancement for namespace search and access
This change enhances the performance of namespace searches and
walks by adding a backpointer to the parent in each namespace
node. On large namespaces, this change can improve overall ACPI
performance by up to 9X. Adding a pointer to each namespace node
increases the overall size of the internal namespace by about 5%,
since each namespace entry usually consists of both a namespace
node and an ACPI operand object.
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/acpica/nsinit.c')
| -rw-r--r-- | drivers/acpi/acpica/nsinit.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/acpi/acpica/nsinit.c b/drivers/acpi/acpica/nsinit.c index f0e49df7c13b..660a2728908d 100644 --- a/drivers/acpi/acpica/nsinit.c +++ b/drivers/acpi/acpica/nsinit.c @@ -410,7 +410,7 @@ acpi_ns_find_ini_methods(acpi_handle obj_handle, * The only _INI methods that we care about are those that are * present under Device, Processor, and Thermal objects. */ - parent_node = acpi_ns_get_parent_node(node); + parent_node = node->parent; switch (parent_node->type) { case ACPI_TYPE_DEVICE: case ACPI_TYPE_PROCESSOR: @@ -420,7 +420,7 @@ acpi_ns_find_ini_methods(acpi_handle obj_handle, while (parent_node) { parent_node->flags |= ANOBJ_SUBTREE_HAS_INI; - parent_node = acpi_ns_get_parent_node(parent_node); + parent_node = parent_node->parent; } break; |