[edk2-devel] [Patch v3 3/6] UefiCpuPkg/MpInitLibUp: Add MpInitLibStartupAllCPUs API.
Ni, Ray
ray.ni at intel.com
Thu Jul 25 08:53:11 UTC 2019
Reviewed-by: Ray Ni <ray.ni at intel.com>
> -----Original Message-----
> From: devel at edk2.groups.io <devel at edk2.groups.io> On Behalf Of Dong,
> Eric
> Sent: Wednesday, July 24, 2019 3:07 PM
> To: devel at edk2.groups.io
> Cc: Ni, Ray <ray.ni at intel.com>; Laszlo Ersek <lersek at redhat.com>; Kumar,
> Chandana C <chandana.c.kumar at intel.com>; Zeng, Star
> <star.zeng at intel.com>
> Subject: [edk2-devel] [Patch v3 3/6] UefiCpuPkg/MpInitLibUp: Add
> MpInitLibStartupAllCPUs API.
>
> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1973
>
> Add new MpInitLibStartupAllCPUs API uses to start all processors at the same
> time.
>
> Cc: Ray Ni <ray.ni at intel.com>
> Cc: Laszlo Ersek <lersek at redhat.com>
> Cc: Chandana Kumar <chandana.c.kumar at intel.com>
> Cc: Star Zeng <star.zeng at intel.com>
> Signed-off-by: Eric Dong <eric.dong at intel.com>
> ---
> UefiCpuPkg/Library/MpInitLibUp/MpInitLibUp.c | 35
> ++++++++++++++++++++
> 1 file changed, 35 insertions(+)
>
> diff --git a/UefiCpuPkg/Library/MpInitLibUp/MpInitLibUp.c
> b/UefiCpuPkg/Library/MpInitLibUp/MpInitLibUp.c
> index 36c2bb5326..b4024ee1ae 100644
> --- a/UefiCpuPkg/Library/MpInitLibUp/MpInitLibUp.c
> +++ b/UefiCpuPkg/Library/MpInitLibUp/MpInitLibUp.c
> @@ -405,3 +405,38 @@ MpInitLibWhoAmI (
> *ProcessorNumber = 0;
> return EFI_SUCCESS;
> }
> +
> +/**
> + This service executes a caller provided function on all enabled CPUs.
> +
> + @param[in] Procedure A pointer to the function to be run on
> + enabled APs of the system. See type
> + EFI_AP_PROCEDURE.
> + @param[in] TimeoutInMicroseconds Indicates the time limit in
> microseconds for
> + APs to return from Procedure, either for
> + blocking or non-blocking mode. Zero means
> + infinity. TimeoutInMicroseconds is ignored
> + for BSP.
> + @param[in] ProcedureArgument The parameter passed into
> Procedure for
> + all APs.
> +
> + @retval EFI_SUCCESS CPU have finished the procedure.
> + @retval EFI_INVALID_PARAMETER Procedure is NULL.
> +
> +**/
> +EFI_STATUS
> +EFIAPI
> +MpInitLibStartupAllCPUs (
> + IN EFI_AP_PROCEDURE Procedure,
> + IN UINTN TimeoutInMicroseconds,
> + IN VOID *ProcedureArgument OPTIONAL
> + )
> +{
> + if (Procedure == NULL) {
> + return EFI_INVALID_PARAMETER;
> + }
> +
> + Procedure (ProcedureArgument);
> +
> + return EFI_SUCCESS;
> +}
> --
> 2.21.0.windows.1
>
>
>
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