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ACPICA: Optimization: Reduce the number of namespace walks 

On control method exit, only walk the namespace if the method is
known to have created namespace objects outside of its local scope.

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>
This commit is contained in:
Alexey Starikovskiy 2010-05-26 13:59:51 +08:00 committed by Len Brown
parent 20d33aea7a
commit a9fc03125e
2 changed files with 32 additions and 6 deletions
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18
drivers/acpi/acpica/dsmethod.c
View File

@ -584,8 +584,22 @@ acpi_ds_terminate_control_method(union acpi_operand_object *method_desc,
* want make the objects permanent.
*/
if (!(method_desc->method.flags & AOPOBJ_MODULE_LEVEL)) {
acpi_ns_delete_namespace_by_owner(method_desc->method.
owner_id);
/* Delete any direct children of (created by) this method */
acpi_ns_delete_namespace_subtree(walk_state->
method_node);
/*
* Delete any objects that were created by this method
* elsewhere in the namespace (if any were created).
*/
if (method_desc->method.
flags & AOPOBJ_MODIFIED_NAMESPACE) {
acpi_ns_delete_namespace_by_owner(method_desc->
method.
owner_id);
}
}
}

20
drivers/acpi/acpica/nsalloc.c
View File

@ -219,12 +219,24 @@ void acpi_ns_install_node(struct acpi_walk_state *walk_state, struct acpi_namesp
ACPI_FUNCTION_TRACE(ns_install_node);
/*
* Get the owner ID from the Walk state. The owner ID is used to track
* table deletion and deletion of objects created by methods.
*/
if (walk_state) {
/*
* Get the owner ID from the Walk state. The owner ID is used to
* track table deletion and deletion of objects created by methods.
*/
owner_id = walk_state->owner_id;
if ((walk_state->method_desc) &&
(parent_node != walk_state->method_node)) {
/*
* A method is creating a new node that is not a child of the
* method (it is non-local). Mark the executing method as having
* modified the namespace. This is used for cleanup when the
* method exits.
*/
walk_state->method_desc->method.flags |=
AOPOBJ_MODIFIED_NAMESPACE;
}
}
/* Link the new entry into the parent and existing children */