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| author | Alexey Starikovskiy <astarikovskiy@suse.de> | 2010-05-26 11:53:07 +0800 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2010-07-06 22:33:56 -0400 |
| commit | c45b5c097001480e66d4c523eb715ad317a4ef77 (patch) | |
| tree | 5b9415840b97a724537273db99b2c66975c63347 /drivers/acpi/acpica/utglobal.c | |
| parent | 5821f75421aa7c7bafdec291223153597f649934 (diff) | |
| download | linux-c45b5c097001480e66d4c523eb715ad317a4ef77.tar.bz2 | |
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/utglobal.c')
| -rw-r--r-- | drivers/acpi/acpica/utglobal.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/acpi/acpica/utglobal.c b/drivers/acpi/acpica/utglobal.c index 66116750a0f9..0558747579ef 100644 --- a/drivers/acpi/acpica/utglobal.c +++ b/drivers/acpi/acpica/utglobal.c @@ -813,10 +813,10 @@ acpi_status acpi_ut_init_globals(void) acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME; acpi_gbl_root_node_struct.descriptor_type = ACPI_DESC_TYPE_NAMED; acpi_gbl_root_node_struct.type = ACPI_TYPE_DEVICE; + acpi_gbl_root_node_struct.parent = NULL; acpi_gbl_root_node_struct.child = NULL; acpi_gbl_root_node_struct.peer = NULL; acpi_gbl_root_node_struct.object = NULL; - acpi_gbl_root_node_struct.flags = ANOBJ_END_OF_PEER_LIST; #ifdef ACPI_DEBUG_OUTPUT acpi_gbl_lowest_stack_pointer = ACPI_CAST_PTR(acpi_size, ACPI_SIZE_MAX); |