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authorBob Moore <robert.moore@intel.com>2007-02-02 11:48:21 -0500
committerLen Brown <len.brown@intel.com>2007-02-02 21:14:27 -0500
commitd1fdda83f7c567f376ddd4305833de09f7919ca9 (patch)
tree059dccd5c38ad96a8f31bf8b45409460a02bd41f /include/acpi
parent9bc75cff4919f9d947982d805aed89582a20d04d (diff)
ACPICA: Fix race condition with AcpiWalkNamespace.
Fixed a problem with a possible race condition between threads executing AcpiWalkNamespace and the AML interpreter. This condition was removed by modifying AcpiWalkNamespace to (by default) ignore all temporary namespace entries created during any concurrent control method execution Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'include/acpi')
-rw-r--r--include/acpi/aclocal.h2
-rw-r--r--include/acpi/acnamesp.h10
2 files changed, 8 insertions, 4 deletions
diff --git a/include/acpi/aclocal.h b/include/acpi/aclocal.h
index 553763d7312a..287da6fe256c 100644
--- a/include/acpi/aclocal.h
+++ b/include/acpi/aclocal.h
@@ -204,7 +204,7 @@ struct acpi_namespace_node {
204/* Namespace Node flags */ 204/* Namespace Node flags */
205 205
206#define ANOBJ_END_OF_PEER_LIST 0x01 /* End-of-list, Peer field points to parent */ 206#define ANOBJ_END_OF_PEER_LIST 0x01 /* End-of-list, Peer field points to parent */
207#define ANOBJ_RESERVED 0x02 /* Available for future use */ 207#define ANOBJ_TEMPORARY 0x02 /* Node is create by a method and is temporary */
208#define ANOBJ_METHOD_ARG 0x04 /* Node is a method argument */ 208#define ANOBJ_METHOD_ARG 0x04 /* Node is a method argument */
209#define ANOBJ_METHOD_LOCAL 0x08 /* Node is a method local */ 209#define ANOBJ_METHOD_LOCAL 0x08 /* Node is a method local */
210#define ANOBJ_SUBTREE_HAS_INI 0x10 /* Used to optimize device initialization */ 210#define ANOBJ_SUBTREE_HAS_INI 0x10 /* Used to optimize device initialization */
diff --git a/include/acpi/acnamesp.h b/include/acpi/acnamesp.h
index b3b9f0ec79c3..19a61292af60 100644
--- a/include/acpi/acnamesp.h
+++ b/include/acpi/acnamesp.h
@@ -65,9 +65,13 @@
65#define ACPI_NS_ERROR_IF_FOUND 0x08 65#define ACPI_NS_ERROR_IF_FOUND 0x08
66#define ACPI_NS_PREFIX_IS_SCOPE 0x10 66#define ACPI_NS_PREFIX_IS_SCOPE 0x10
67#define ACPI_NS_EXTERNAL 0x20 67#define ACPI_NS_EXTERNAL 0x20
68#define ACPI_NS_TEMPORARY 0x40
68 69
69#define ACPI_NS_WALK_UNLOCK TRUE 70/* Flags for acpi_ns_walk_namespace */
70#define ACPI_NS_WALK_NO_UNLOCK FALSE 71
72#define ACPI_NS_WALK_NO_UNLOCK 0
73#define ACPI_NS_WALK_UNLOCK 0x01
74#define ACPI_NS_WALK_TEMP_NODES 0x02
71 75
72/* 76/*
73 * nsinit - Namespace initialization 77 * nsinit - Namespace initialization
@@ -92,7 +96,7 @@ acpi_status
92acpi_ns_walk_namespace(acpi_object_type type, 96acpi_ns_walk_namespace(acpi_object_type type,
93 acpi_handle start_object, 97 acpi_handle start_object,
94 u32 max_depth, 98 u32 max_depth,
95 u8 unlock_before_callback, 99 u32 flags,
96 acpi_walk_callback user_function, 100 acpi_walk_callback user_function,
97 void *context, void **return_value); 101 void *context, void **return_value);
98 102