From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received-SPF: Pass (sender SPF authorized) identity=mailfrom; client-ip=134.134.136.100; helo=mga07.intel.com; envelope-from=eric.dong@intel.com; receiver=edk2-devel@lists.01.org Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 1F259210C1B94 for ; Wed, 25 Jul 2018 00:51:10 -0700 (PDT) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 25 Jul 2018 00:51:09 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,400,1526367600"; d="scan'208";a="75739872" Received: from ydong10-win10.ccr.corp.intel.com ([10.239.9.125]) by orsmga001.jf.intel.com with ESMTP; 25 Jul 2018 00:51:06 -0700 From: Eric Dong To: edk2-devel@lists.01.org Cc: Laszlo Ersek , Ruiyu Ni Date: Wed, 25 Jul 2018 15:50:18 +0800 Message-Id: <20180725075020.240-2-eric.dong@intel.com> X-Mailer: git-send-email 2.15.0.windows.1 In-Reply-To: <20180725075020.240-1-eric.dong@intel.com> References: <20180725075020.240-1-eric.dong@intel.com> Subject: [Patch v3 1/3] UefiCpuPkg/MpInitLib: Remove redundant CpuStateFinished State. X-BeenThere: edk2-devel@lists.01.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: EDK II Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 25 Jul 2018 07:51:10 -0000 Current CPU state definition include CpuStateIdle and CpuStateFinished. After investigation, current code can use CpuStateIdle to replace the CpuStateFinished. It will reduce the state number and easy for maintenance. Cc: Laszlo Ersek Cc: Ruiyu Ni Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Eric Dong --- UefiCpuPkg/Library/MpInitLib/MpLib.c | 18 ++++++++---------- UefiCpuPkg/Library/MpInitLib/MpLib.h | 1 - 2 files changed, 8 insertions(+), 11 deletions(-) diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.c b/UefiCpuPkg/Library/MpInitLib/MpLib.c index c82b985943..ff09a0e9e7 100644 --- a/UefiCpuPkg/Library/MpInitLib/MpLib.c +++ b/UefiCpuPkg/Library/MpInitLib/MpLib.c @@ -696,7 +696,7 @@ ApWakeupFunction ( } } } - SetApState (&CpuMpData->CpuData[ProcessorNumber], CpuStateFinished); + SetApState (&CpuMpData->CpuData[ProcessorNumber], CpuStateIdle); } } @@ -1352,18 +1352,17 @@ CheckThisAP ( CpuData = &CpuMpData->CpuData[ProcessorNumber]; // - // Check the CPU state of AP. If it is CpuStateFinished, then the AP has finished its task. + // Check the CPU state of AP. If it is CpuStateIdle, then the AP has finished its task. // Only BSP and corresponding AP access this unit of CPU Data. This means the AP will not modify the - // value of state after setting the it to CpuStateFinished, so BSP can safely make use of its value. + // value of state after setting the it to CpuStateIdle, so BSP can safely make use of its value. // // // If the AP finishes for StartupThisAP(), return EFI_SUCCESS. // - if (GetApState(CpuData) == CpuStateFinished) { + if (GetApState(CpuData) == CpuStateIdle) { if (CpuData->Finished != NULL) { *(CpuData->Finished) = TRUE; } - SetApState (CpuData, CpuStateIdle); return EFI_SUCCESS; } else { // @@ -1420,14 +1419,13 @@ CheckAllAPs ( CpuData = &CpuMpData->CpuData[ProcessorNumber]; // - // Check the CPU state of AP. If it is CpuStateFinished, then the AP has finished its task. + // Check the CPU state of AP. If it is CpuStateIdle, then the AP has finished its task. // Only BSP and corresponding AP access this unit of CPU Data. This means the AP will not modify the - // value of state after setting the it to CpuStateFinished, so BSP can safely make use of its value. + // value of state after setting the it to CpuStateIdle, so BSP can safely make use of its value. // - if (GetApState(CpuData) == CpuStateFinished) { + if (GetApState(CpuData) == CpuStateIdle) { CpuMpData->RunningCount ++; CpuMpData->CpuData[ProcessorNumber].Waiting = FALSE; - SetApState(CpuData, CpuStateIdle); // // If in Single Thread mode, then search for the next waiting AP for execution. @@ -1923,7 +1921,7 @@ SwitchBSPWorker ( // // Wait for old BSP finished AP task // - while (GetApState (&CpuMpData->CpuData[CallerNumber]) != CpuStateFinished) { + while (GetApState (&CpuMpData->CpuData[CallerNumber]) != CpuStateIdle) { CpuPause (); } diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.h b/UefiCpuPkg/Library/MpInitLib/MpLib.h index 9d0b866d09..962bce685d 100644 --- a/UefiCpuPkg/Library/MpInitLib/MpLib.h +++ b/UefiCpuPkg/Library/MpInitLib/MpLib.h @@ -85,7 +85,6 @@ typedef enum { CpuStateIdle, CpuStateReady, CpuStateBusy, - CpuStateFinished, CpuStateDisabled } CPU_STATE; -- 2.15.0.windows.1