From patchwork Wed Aug 9 11:39:40 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mihai Carabas X-Patchwork-Id: 13347928 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7D508C0015E for ; Wed, 9 Aug 2023 12:55:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=kHrhig/O7mOZG7j6Nx/jVbjkgrwG3gCyYg11bdJevyw=; b=uOBmQfZJEnjtqQ 9bAtXszjKn4Q2hRGusKuoeAqkaDE/tC87SrDmCUv1MkwOcjUqHpFB5LxX+kzS19rUvOFs7MQXOMxq dhB3oZxVzZxPC02mDNhVEVUKBFN7YoTcV3WavTgZ1TlEScy8puvFOKIhYOOyVfAMBsOp4p48PEXRC iicYfks7spyNvEUoOTOu1MoQnd4RAgBvWB/FWo3mxJfUm868D/ArcG9rcy/LELE4Pf0RXC4U9o++/ nblOTX76lthF8VwFdr+d3OjOCJOx60TUjA4xcQwZ6dtIDkJ3+6cAkGpdKxosQid9T3kbsVqx4iI6w fbuBSzbuAVaM0ZM92qPg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qTihz-004w4O-1E; Wed, 09 Aug 2023 12:54:39 +0000 Received: from mx0b-00069f02.pphosted.com ([205.220.177.32]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qTihx-004w3A-1I for linux-arm-kernel@lists.infradead.org; Wed, 09 Aug 2023 12:54:38 +0000 Received: from pps.filterd (m0333520.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 379CrAMj003841; Wed, 9 Aug 2023 12:54:18 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=corp-2023-03-30; bh=3CBdIWj34ZRhxUcc3rj18We/Fw9vZjncSXWx3xdqX8c=; b=jqUvKmcI0iRH7yyuqD+FJpXcehOvbBlaOcQ8ZTYMRUh2ISAX6kUZNU7PQno+4c4dIMRT Cc7b1hALhsNVK/4AT8wIWKeARWbjY6s7Fguqi/QXtRYHmlqSf5tKuckVHY1RP03iNOt/ 0zIOWxapVCetvWSMWAkGDbOzOBuDw4jxWtTj73DXFQ30fWgUxNaFoQvphxsWfTzeVJz4 eO6AkOG7sfCi3ezRVMLcCg5DLx/tcbusKx0/02KY4Zt+XCvnTjz1PvhoTDqT/YczDW+H xdLUzrU0REkQXNdtpV5CJBpr/44gOiVYYnW2+hCxwZB88wqJI6ZAVQneG1L6ggaV6Cef pA== Received: from phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta03.appoci.oracle.com [138.1.37.129]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 3s9efd8mfm-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 09 Aug 2023 12:54:17 +0000 Received: from pps.filterd (phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (8.17.1.19/8.17.1.19) with ESMTP id 379CLjKs021450; Wed, 9 Aug 2023 12:54:16 GMT Received: from pps.reinject (localhost [127.0.0.1]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTPS id 3s9cvdyh79-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 09 Aug 2023 12:54:16 +0000 Received: from phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 379CqCGP027258; Wed, 9 Aug 2023 12:54:15 GMT Received: from mihai.localdomain (ban25x6uut25.us.oracle.com [10.153.73.25]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTP id 3s9cvdyf90-7; Wed, 09 Aug 2023 12:54:15 +0000 From: Mihai Carabas To: Cc: Joao Martins , Mihai Carabas , Catalin Marinas , Will Deacon , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Paolo Bonzini , Wanpeng Li , Vitaly Kuznetsov , "Rafael J. Wysocki" , Daniel Lezcano , Andrew Morton , Kees Cook , Peter Zijlstra , Petr Mladek , Ard Biesheuvel , Sami Tolvanen , Nicholas Piggin , Juerg Haefliger , =?utf-8?q?Micka=C3=ABl_Sal?= =?utf-8?q?a=C3=BCn?= , Arnd Bergmann , Ankur Arora , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, linux-pm@vger.kernel.org Subject: [PATCH 6/7] arm64: Define TIF_POLLING_NRFLAG Date: Wed, 9 Aug 2023 14:39:40 +0300 Message-Id: <1691581193-8416-7-git-send-email-mihai.carabas@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1691581193-8416-1-git-send-email-mihai.carabas@oracle.com> References: <1691581193-8416-1-git-send-email-mihai.carabas@oracle.com> X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-08-09_10,2023-08-09_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 malwarescore=0 spamscore=0 adultscore=0 mlxlogscore=869 bulkscore=0 phishscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2308090114 X-Proofpoint-GUID: WCDia_qDu-gV8Dwp3ZO2w_zOHE8um58f X-Proofpoint-ORIG-GUID: WCDia_qDu-gV8Dwp3ZO2w_zOHE8um58f X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230809_055437_551683_23CEA3AD X-CRM114-Status: GOOD ( 17.52 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Joao Martins The default idle method for arm64 is WFI and it therefore unconditionally requires the reschedule interrupt when idle. Commit 842514849a61 ("arm64: Remove TIF_POLLING_NRFLAG") had reverted it because WFI was the only idle method. ARM64 support for haltpoll means that poll_idle() polls for TIF_POLLING_NRFLAG, so define on arm64 *only if* haltpoll is built, using the same bit. Signed-off-by: Joao Martins Signed-off-by: Mihai Carabas --- arch/arm64/include/asm/thread_info.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm64/include/asm/thread_info.h b/arch/arm64/include/asm/thread_info.h index 553d1bc559c6..d3010d0b2988 100644 --- a/arch/arm64/include/asm/thread_info.h +++ b/arch/arm64/include/asm/thread_info.h @@ -69,6 +69,9 @@ struct thread_info { #define TIF_SYSCALL_TRACEPOINT 10 /* syscall tracepoint for ftrace */ #define TIF_SECCOMP 11 /* syscall secure computing */ #define TIF_SYSCALL_EMU 12 /* syscall emulation active */ +#if IS_ENABLED(CONFIG_HALTPOLL_CPUIDLE) || IS_ENABLED(CONFIG_HALTPOLL_CPUIDLE_MODULE) +#define TIF_POLLING_NRFLAG 16 /* poll_idle() polls TIF_NEED_RESCHED */ +#endif #define TIF_MEMDIE 18 /* is terminating due to OOM killer */ #define TIF_FREEZE 19 #define TIF_RESTORE_SIGMASK 20 @@ -90,6 +93,9 @@ struct thread_info { #define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT) #define _TIF_SECCOMP (1 << TIF_SECCOMP) #define _TIF_SYSCALL_EMU (1 << TIF_SYSCALL_EMU) +#if IS_ENABLED(CONFIG_HALTPOLL_CPUIDLE) || IS_ENABLED(CONFIG_HALTPOLL_CPUIDLE_MODULE) +#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) +#endif #define _TIF_UPROBE (1 << TIF_UPROBE) #define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP) #define _TIF_32BIT (1 << TIF_32BIT)