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Namespace: simplify creation of the initial/default namespace

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For the objects that are created by default (_GPE, _SB_, etc)
there is no need to use the heavyweight NsLookup function.
Instead, simply create each object and link it in as the namespace
is built.
This commit is contained in:
Robert Moore 2019-05-15 10:00:35 -07:00
parent 36449fa1dc
commit 76658f55d8
1 changed files with 46 additions and 11 deletions
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57
source/components/namespace/nsaccess.c Normal file → Executable file
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@ -184,6 +184,7 @@ AcpiNsRootInitialize (
ACPI_STATUS Status;
const ACPI_PREDEFINED_NAMES *InitVal = NULL;
ACPI_NAMESPACE_NODE *NewNode;
ACPI_NAMESPACE_NODE *PrevNode = NULL;
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_STRING Val = NULL;
@ -213,13 +214,30 @@ AcpiNsRootInitialize (
*/
AcpiGbl_RootNode = &AcpiGbl_RootNodeStruct;
/* Enter the pre-defined names in the name table */
/* Enter the predefined names in the name table */
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
"Entering predefined entries into namespace\n"));
/*
* Create the initial (default) namespace.
* This namespace looks like something similar to this:
*
* ACPI Namespace (from Namespace Root):
* 0 _GPE Scope 00203160 00
* 0 _PR_ Scope 002031D0 00
* 0 _SB_ Device 00203240 00 Notify Object: 0020ADD8
* 0 _SI_ Scope 002032B0 00
* 0 _TZ_ Device 00203320 00
* 0 _REV Integer 00203390 00 = 0000000000000002
* 0 _OS_ String 00203488 00 Len 14 "Microsoft Windows NT"
* 0 _GL_ Mutex 00203580 00 Object 002035F0
* 0 _OSI Method 00203678 00 Args 1 Len 0000 Aml 00000000
*/
for (InitVal = AcpiGbl_PreDefinedNames; InitVal->Name; InitVal++)
{
Status = AE_OK;
/* _OSI is optional for now, will be permanent later */
if (!strcmp (InitVal->Name, "_OSI") && !AcpiGbl_CreateOsiMethod)
@ -227,17 +245,35 @@ AcpiNsRootInitialize (
continue;
}
Status = AcpiNsLookup (NULL, ACPI_CAST_PTR (char, InitVal->Name),
InitVal->Type, ACPI_IMODE_LOAD_PASS2, ACPI_NS_NO_UPSEARCH,
NULL, &NewNode);
if (ACPI_FAILURE (Status))
/*
* Create, init, and link the new predefined name
* Note: No need to use AcpiNsLookup here because all the
* predefined names are at the root level. It is much easier to
* just create and link the new node(s) here.
*/
NewNode = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_NAMESPACE_NODE));
if (!NewNode)
{
ACPI_EXCEPTION ((AE_INFO, Status,
"Could not create predefined name %s",
InitVal->Name));
continue;
Status = AE_NO_MEMORY;
goto UnlockAndExit;
}
ACPI_COPY_NAMESEG (NewNode->Name.Ascii, InitVal->Name);
NewNode->DescriptorType = ACPI_DESC_TYPE_NAMED;
NewNode->Type = InitVal->Type;
if (!PrevNode)
{
AcpiGbl_RootNodeStruct.Child = NewNode;
}
else
{
PrevNode->Peer = NewNode;
}
NewNode->Parent = &AcpiGbl_RootNodeStruct;
PrevNode = NewNode;
/*
* Name entered successfully. If entry in PreDefinedNames[] specifies
* an initial value, create the initial value.
@ -286,7 +322,7 @@ AcpiNsRootInitialize (
NewNode->Value = ObjDesc->Method.ParamCount;
#else
/* Mark this as a very SPECIAL method */
/* Mark this as a very SPECIAL method (_OSI) */
ObjDesc->Method.InfoFlags = ACPI_METHOD_INTERNAL_ONLY;
ObjDesc->Method.Dispatch.Implementation = AcpiUtOsiImplementation;
@ -359,7 +395,6 @@ AcpiNsRootInitialize (
}
}
UnlockAndExit:
(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);