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Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by BL6PEPF00022571.mail.protection.outlook.com (10.167.249.39) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.7677.15 via Frontend Transport; Thu, 13 Jun 2024 18:21:03 +0000 Received: from BLRKPRNAYAK.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Thu, 13 Jun 2024 13:20:54 -0500 From: K Prateek Nayak To: CC: "Gautham R. Shenoy" , K Prateek Nayak , Yoshinori Sato , "Rich Felker" , John Paul Adrian Glaubitz , "Rafael J. Wysocki" , Daniel Lezcano , Ingo Molnar , Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , "Daniel Bristot de Oliveira" , Valentin Schneider , , Subject: [PATCH v2 09/14] sh/thread_info: Introduce TIF_NOTIFY_IPI flag Date: Thu, 13 Jun 2024 18:16:08 +0000 Message-ID: <20240613181613.4329-10-kprateek.nayak@amd.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240613181613.4329-1-kprateek.nayak@amd.com> References: <20240613181613.4329-1-kprateek.nayak@amd.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL6PEPF00022571:EE_|MN2PR12MB4237:EE_ X-MS-Office365-Filtering-Correlation-Id: 721f758b-4425-48ad-2763-08dc8bd595a8 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230035|376009|7416009|1800799019|36860700008|82310400021; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17; CTRY:US; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:SATLEXMB04.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230035)(376009)(7416009)(1800799019)(36860700008)(82310400021); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Jun 2024 18:21:03.2231 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 721f758b-4425-48ad-2763-08dc8bd595a8 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL6PEPF00022571.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4237 Add support for TIF_NOTIFY_IPI on SuperH. With TIF_NOTIFY_IPI, a sender sending an IPI to an idle CPU in TIF_POLLING mode will set the TIF_NOTIFY_IPI flag in the target's idle tasks's thread_info to pull the CPU out of idle, as opposed to setting TIF_NEED_RESCHED previously. This avoids spurious calls to schedule_idle() in cases where an IPI does not necessarily wake up a task on the idle CPU. Cc: Yoshinori Sato Cc: Rich Felker Cc: John Paul Adrian Glaubitz Cc: "Rafael J. Wysocki" Cc: Daniel Lezcano Cc: Ingo Molnar Cc: Peter Zijlstra Cc: Juri Lelli Cc: Vincent Guittot Cc: Dietmar Eggemann Cc: Steven Rostedt Cc: Ben Segall Cc: Mel Gorman Cc: Daniel Bristot de Oliveira Cc: Valentin Schneider Cc: K Prateek Nayak Cc: linux-sh@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-pm@vger.kernel.org Signed-off-by: K Prateek Nayak --- v1..v2: o No changes. --- arch/sh/include/asm/thread_info.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/sh/include/asm/thread_info.h b/arch/sh/include/asm/thread_info.h index 9f19a682d315..8cd9d2a5361b 100644 --- a/arch/sh/include/asm/thread_info.h +++ b/arch/sh/include/asm/thread_info.h @@ -106,6 +106,7 @@ extern void init_thread_xstate(void); #define TIF_SECCOMP 6 /* secure computing */ #define TIF_NOTIFY_RESUME 7 /* callback before returning to user */ #define TIF_SYSCALL_TRACEPOINT 8 /* for ftrace syscall instrumentation */ +#define TIF_NOTIFY_IPI 9 /* Pending IPI on TIF_POLLLING idle CPU */ #define TIF_POLLING_NRFLAG 17 /* true if poll_idle() is polling TIF_NEED_RESCHED */ #define TIF_MEMDIE 18 /* is terminating due to OOM killer */ @@ -118,6 +119,7 @@ extern void init_thread_xstate(void); #define _TIF_SECCOMP (1 << TIF_SECCOMP) #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) #define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT) +#define _TIF_NOTIFY_IPI (1 << TIF_NOTIFY_IPI) #define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) /* work to do in syscall trace */