diff options
| author |   Bob Moore <robert.moore@intel.com> | 2007-02-02 19:48:21 +0300 |
|---|---|---|
| committer |   Len Brown <len.brown@intel.com> | 2007-02-02 21:14:27 -0500 |
| commit | d1fdda83f7c567f376ddd4305833de09f7919ca9 (patch) | |
| tree | 059dccd5c38ad96a8f31bf8b45409460a02bd41f /include/acpi | |
| parent | ACPICA: Eliminate control method 2-pass parse/execute. (diff) | |
| download | linux-dev-d1fdda83f7c567f376ddd4305833de09f7919ca9.tar.xz linux-dev-d1fdda83f7c567f376ddd4305833de09f7919ca9.zip | |
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.h | 2 | ||||
| -rw-r--r-- | include/acpi/acnamesp.h | 10 |
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 { /* Namespace Node flags */ #define ANOBJ_END_OF_PEER_LIST 0x01 /* End-of-list, Peer field points to parent */ -#define ANOBJ_RESERVED 0x02 /* Available for future use */ +#define ANOBJ_TEMPORARY 0x02 /* Node is create by a method and is temporary */ #define ANOBJ_METHOD_ARG 0x04 /* Node is a method argument */ #define ANOBJ_METHOD_LOCAL 0x08 /* Node is a method local */ #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 @@ #define ACPI_NS_ERROR_IF_FOUND 0x08 #define ACPI_NS_PREFIX_IS_SCOPE 0x10 #define ACPI_NS_EXTERNAL 0x20 +#define ACPI_NS_TEMPORARY 0x40 -#define ACPI_NS_WALK_UNLOCK TRUE -#define ACPI_NS_WALK_NO_UNLOCK FALSE +/* Flags for acpi_ns_walk_namespace */ + +#define ACPI_NS_WALK_NO_UNLOCK 0 +#define ACPI_NS_WALK_UNLOCK 0x01 +#define ACPI_NS_WALK_TEMP_NODES 0x02 /* * nsinit - Namespace initialization @@ -92,7 +96,7 @@ acpi_status acpi_ns_walk_namespace(acpi_object_type type, acpi_handle start_object, u32 max_depth, - u8 unlock_before_callback, + u32 flags, acpi_walk_callback user_function, void *context, void **return_value); |