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ACPICA: Fix race condition with AcpiWalkNamespace.

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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>
This commit is contained in:
Bob Moore
2007-02-02 19:48:21 +03:00
committed by Len Brown
parent 9bc75cff49
commit d1fdda83f7
6 changed files with 30 additions and 12 deletions
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9
drivers/acpi/namespace/nsdump.c
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@@ -226,6 +226,12 @@ acpi_ns_dump_one_object(acpi_handle obj_handle,
obj_desc = acpi_ns_get_attached_object(this_node);
acpi_dbg_level = dbg_level;
/* Temp nodes are those nodes created by a control method */
if (this_node->flags & ANOBJ_TEMPORARY) {
acpi_os_printf("(T) ");
}
switch (info->display_type & ACPI_DISPLAY_MASK) {
case ACPI_DISPLAY_SUMMARY:
@@ -623,7 +629,8 @@ acpi_ns_dump_objects(acpi_object_type type,
info.display_type = display_type;
(void)acpi_ns_walk_namespace(type, start_handle, max_depth,
ACPI_NS_WALK_NO_UNLOCK,
ACPI_NS_WALK_NO_UNLOCK |
ACPI_NS_WALK_TEMP_NODES,
acpi_ns_dump_one_object, (void *)&info,
NULL);
}