> -----Original Message-----
> From: Kubacki, Michael A
> Sent: Saturday, September 28, 2019 9:47 AM
> To: devel@edk2.groups.io
> Cc: Bi, Dandan; Ard Biesheuvel; Dong, Eric; Laszlo Ersek; Gao, Liming; Kinney,
> Michael D; Ni, Ray; Wang, Jian J; Wu, Hao A; Yao, Jiewen
> Subject: [PATCH V2 3/9] MdeModulePkg/Variable: Parameterize
> VARIABLE_INFO_ENTRY buffer
>
> UpdateVariableInfo () currently accepts parameters regarding updates
> to be made to a global variable of type VARIABLE_INFO_ENTRY. This
> change passes the structure by pointer to UpdateVariableInfo ()
> so structures can be updated outside the fixed global variable.
For:
"... so structures can be updated outside the fixed global variable "
Do you mean:
VARIABLE_INFO_ENTRY structure pointers other than "&gVariableInfo" can be
passed to UpdateVariableInfo().
Is my understanding correct? If so,
Reviewed-by: Hao A Wu <hao.a...@intel.com>
Best Regards,
Hao Wu
>
> Cc: Dandan Bi <dandan...@intel.com>
> Cc: Ard Biesheuvel <ard.biesheu...@linaro.org>
> Cc: Eric Dong <eric.d...@intel.com>
> Cc: Laszlo Ersek <ler...@redhat.com>
> Cc: Liming Gao <liming....@intel.com>
> Cc: Michael D Kinney <michael.d.kin...@intel.com>
> Cc: Ray Ni <ray...@intel.com>
> Cc: Jian J Wang <jian.j.w...@intel.com>
> Cc: Hao A Wu <hao.a...@intel.com>
> Cc: Jiewen Yao <jiewen....@intel.com>
> Signed-off-by: Michael Kubacki <michael.a.kuba...@intel.com>
> ---
> MdeModulePkg/Universal/Variable/RuntimeDxe/VariableParsing.h | 18
> +++++----
> MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c | 14 +++----
> MdeModulePkg/Universal/Variable/RuntimeDxe/VariableParsing.c | 41
> +++++++++++---------
> 3 files changed, 39 insertions(+), 34 deletions(-)
>
> diff --git
> a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableParsing.h
> b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableParsing.h
> index 0d231511ea..6f2000f3ee 100644
> --- a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableParsing.h
> +++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableParsing.h
> @@ -286,13 +286,14 @@ GetNextVariableEx (
> the transaction. Data is allocated by this routine, but never
> freed.
>
> - @param[in] VariableName Name of the Variable to track.
> - @param[in] VendorGuid Guid of the Variable to track.
> - @param[in] Volatile TRUE if volatile FALSE if non-volatile.
> - @param[in] Read TRUE if GetVariable() was called.
> - @param[in] Write TRUE if SetVariable() was called.
> - @param[in] Delete TRUE if deleted via SetVariable().
> - @param[in] Cache TRUE for a cache hit.
> + @param[in] VariableName Name of the Variable to track.
> + @param[in] VendorGuid Guid of the Variable to track.
> + @param[in] Volatile TRUE if volatile FALSE if non-volatile.
> + @param[in] Read TRUE if GetVariable() was called.
> + @param[in] Write TRUE if SetVariable() was called.
> + @param[in] Delete TRUE if deleted via SetVariable().
> + @param[in] Cache TRUE for a cache hit.
> + @param[in,out] VariableInfo Pointer to a pointer of
> VARIABLE_INFO_ENTRY structures.
>
> **/
> VOID
> @@ -303,7 +304,8 @@ UpdateVariableInfo (
> IN BOOLEAN Read,
> IN BOOLEAN Write,
> IN BOOLEAN Delete,
> - IN BOOLEAN Cache
> + IN BOOLEAN Cache,
> + IN OUT VARIABLE_INFO_ENTRY **VariableInfo
> );
>
> #endif
> diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c
> b/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c
> index 816e8f7b8f..1a57d7e1ba 100644
> --- a/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c
> +++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c
> @@ -1641,7 +1641,7 @@ UpdateVariable (
> // go to delete this variable in variable HOB and
> // try to flush other variables from HOB to flash.
> //
> - UpdateVariableInfo (VariableName, VendorGuid, FALSE, FALSE, FALSE,
> TRUE, FALSE);
> + UpdateVariableInfo (VariableName, VendorGuid, FALSE, FALSE, FALSE,
> TRUE, FALSE, &gVariableInfo);
> FlushHobVariableToFlash (VariableName, VendorGuid);
> return EFI_SUCCESS;
> }
> @@ -1758,7 +1758,7 @@ UpdateVariable (
> &State
> );
> if (!EFI_ERROR (Status)) {
> - UpdateVariableInfo (VariableName, VendorGuid, Variable->Volatile,
> FALSE, FALSE, TRUE, FALSE);
> + UpdateVariableInfo (VariableName, VendorGuid, Variable->Volatile,
> FALSE, FALSE, TRUE, FALSE, &gVariableInfo);
> if (!Variable->Volatile) {
> CacheVariable->CurrPtr->State = State;
> FlushHobVariableToFlash (VariableName, VendorGuid);
> @@ -1777,7 +1777,7 @@ UpdateVariable (
> //
> // Variable content unchanged and no need to update timestamp, just
> return.
> //
> - UpdateVariableInfo (VariableName, VendorGuid, Variable->Volatile,
> FALSE, TRUE, FALSE, FALSE);
> + UpdateVariableInfo (VariableName, VendorGuid, Variable->Volatile,
> FALSE, TRUE, FALSE, FALSE, &gVariableInfo);
> Status = EFI_SUCCESS;
> goto Done;
> } else if ((CacheVariable->CurrPtr->State == VAR_ADDED) ||
> @@ -2006,7 +2006,7 @@ UpdateVariable (
> CacheVariable->CurrPtr = (VARIABLE_HEADER *)((UINTN)
> CacheVariable->StartPtr + ((UINTN) Variable->CurrPtr - (UINTN) Variable-
> >StartPtr));
> CacheVariable->InDeletedTransitionPtr = NULL;
> }
> - UpdateVariableInfo (VariableName, VendorGuid, FALSE, FALSE, TRUE,
> FALSE, FALSE);
> + UpdateVariableInfo (VariableName, VendorGuid, FALSE, FALSE, TRUE,
> FALSE, FALSE, &gVariableInfo);
> FlushHobVariableToFlash (VariableName, VendorGuid);
> } else {
> if (IsCommonUserVariable && ((VarSize + mVariableModuleGlobal-
> >CommonUserVariableTotalSize) > mVariableModuleGlobal-
> >CommonMaxUserVariableSpace)) {
> @@ -2156,7 +2156,7 @@ UpdateVariable (
> CacheVariable->CurrPtr = (VARIABLE_HEADER *)((UINTN)
> CacheVariable->StartPtr + ((UINTN) Variable->CurrPtr - (UINTN) Variable-
> >StartPtr));
> CacheVariable->InDeletedTransitionPtr = NULL;
> }
> - UpdateVariableInfo (VariableName, VendorGuid, TRUE, FALSE, TRUE,
> FALSE, FALSE);
> + UpdateVariableInfo (VariableName, VendorGuid, TRUE, FALSE, TRUE,
> FALSE, FALSE, &gVariableInfo);
> }
> goto Done;
> }
> @@ -2227,7 +2227,7 @@ UpdateVariable (
> }
>
> if (!EFI_ERROR (Status)) {
> - UpdateVariableInfo (VariableName, VendorGuid, Volatile, FALSE, TRUE,
> FALSE, FALSE);
> + UpdateVariableInfo (VariableName, VendorGuid, Volatile, FALSE, TRUE,
> FALSE, FALSE, &gVariableInfo);
> if (!Volatile) {
> FlushHobVariableToFlash (VariableName, VendorGuid);
> }
> @@ -2306,7 +2306,7 @@ VariableServiceGetVariable (
> }
>
> *DataSize = VarDataSize;
> - UpdateVariableInfo (VariableName, VendorGuid, Variable.Volatile, TRUE,
> FALSE, FALSE, FALSE);
> + UpdateVariableInfo (VariableName, VendorGuid, Variable.Volatile, TRUE,
> FALSE, FALSE, FALSE, &gVariableInfo);
>
> Status = EFI_SUCCESS;
> goto Done;
> diff --git
> a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableParsing.c
> b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableParsing.c
> index 9bc5369a90..394195342d 100644
> --- a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableParsing.c
> +++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableParsing.c
> @@ -660,13 +660,14 @@ Done:
> the transaction. Data is allocated by this routine, but never
> freed.
>
> - @param[in] VariableName Name of the Variable to track.
> - @param[in] VendorGuid Guid of the Variable to track.
> - @param[in] Volatile TRUE if volatile FALSE if non-volatile.
> - @param[in] Read TRUE if GetVariable() was called.
> - @param[in] Write TRUE if SetVariable() was called.
> - @param[in] Delete TRUE if deleted via SetVariable().
> - @param[in] Cache TRUE for a cache hit.
> + @param[in] VariableName Name of the Variable to track.
> + @param[in] VendorGuid Guid of the Variable to track.
> + @param[in] Volatile TRUE if volatile FALSE if non-volatile.
> + @param[in] Read TRUE if GetVariable() was called.
> + @param[in] Write TRUE if SetVariable() was called.
> + @param[in] Delete TRUE if deleted via SetVariable().
> + @param[in] Cache TRUE for a cache hit.
> + @param[in,out] VariableInfo Pointer to a pointer of
> VARIABLE_INFO_ENTRY structures.
>
> **/
> VOID
> @@ -677,35 +678,38 @@ UpdateVariableInfo (
> IN BOOLEAN Read,
> IN BOOLEAN Write,
> IN BOOLEAN Delete,
> - IN BOOLEAN Cache
> + IN BOOLEAN Cache,
> + IN OUT VARIABLE_INFO_ENTRY **VariableInfo
> )
> {
> VARIABLE_INFO_ENTRY *Entry;
>
> if (FeaturePcdGet (PcdVariableCollectStatistics)) {
> -
> + if (VariableName == NULL || VendorGuid == NULL || VariableInfo ==
> NULL) {
> + return;
> + }
> if (AtRuntime ()) {
> // Don't collect statistics at runtime.
> return;
> }
>
> - if (gVariableInfo == NULL) {
> + if (*VariableInfo == NULL) {
> //
> // On the first call allocate a entry and place a pointer to it in
> // the EFI System Table.
> //
> - gVariableInfo = AllocateZeroPool (sizeof (VARIABLE_INFO_ENTRY));
> - ASSERT (gVariableInfo != NULL);
> + *VariableInfo = AllocateZeroPool (sizeof (VARIABLE_INFO_ENTRY));
> + ASSERT (*VariableInfo != NULL);
>
> - CopyGuid (&gVariableInfo->VendorGuid, VendorGuid);
> - gVariableInfo->Name = AllocateZeroPool (StrSize (VariableName));
> - ASSERT (gVariableInfo->Name != NULL);
> - StrCpyS (gVariableInfo->Name, StrSize(VariableName)/sizeof(CHAR16),
> VariableName);
> - gVariableInfo->Volatile = Volatile;
> + CopyGuid (&(*VariableInfo)->VendorGuid, VendorGuid);
> + (*VariableInfo)->Name = AllocateZeroPool (StrSize (VariableName));
> + ASSERT ((*VariableInfo)->Name != NULL);
> + StrCpyS ((*VariableInfo)->Name, StrSize(VariableName)/sizeof(CHAR16),
> VariableName);
> + (*VariableInfo)->Volatile = Volatile;
> }
>
>
> - for (Entry = gVariableInfo; Entry != NULL; Entry = Entry->Next) {
> + for (Entry = (*VariableInfo); Entry != NULL; Entry = Entry->Next) {
> if (CompareGuid (VendorGuid, &Entry->VendorGuid)) {
> if (StrCmp (VariableName, Entry->Name) == 0) {
> if (Read) {
> @@ -739,7 +743,6 @@ UpdateVariableInfo (
> StrCpyS (Entry->Next->Name, StrSize(VariableName)/sizeof(CHAR16),
> VariableName);
> Entry->Next->Volatile = Volatile;
> }
> -
> }
> }
> }
> --
> 2.16.2.windows.1
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