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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 CH2PEPF00000145.mail.protection.outlook.com (10.167.244.102) 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 18:22:11 +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 13:22:02 -0500 From: K Prateek Nayak To: CC: "Gautham R. Shenoy" , K Prateek Nayak , "James E.J. Bottomley" , Helge Deller , "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 12/14] parisc/thread_info: Introduce TIF_NOTIFY_IPI flag Date: Thu, 13 Jun 2024 18:16:11 +0000 Message-ID: <20240613181613.4329-13-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: CH2PEPF00000145:EE_|MN2PR12MB4080:EE_ X-MS-Office365-Filtering-Correlation-Id: 3180faa6-2a7d-48eb-eda0-08dc8bd5be32 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 18:22:11.1321 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3180faa6-2a7d-48eb-eda0-08dc8bd5be32 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: CH2PEPF00000145.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4080 Add support for TIF_NOTIFY_IPI on PA-RISC. 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: "James E.J. Bottomley" Cc: Helge Deller 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-parisc@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/parisc/include/asm/thread_info.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/parisc/include/asm/thread_info.h b/arch/parisc/include/asm/thread_info.h index 1a58795f785c..35f1deeb8f36 100644 --- a/arch/parisc/include/asm/thread_info.h +++ b/arch/parisc/include/asm/thread_info.h @@ -52,6 +52,7 @@ struct thread_info { #define TIF_SECCOMP 11 /* secure computing */ #define TIF_SYSCALL_TRACEPOINT 12 /* syscall tracepoint instrumentation */ #define TIF_NONBLOCK_WARNING 13 /* warned about wrong O_NONBLOCK usage */ +#define TIF_NOTIFY_IPI 14 /* Pending IPI on TIF_POLLLING idle CPU */ #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) @@ -65,6 +66,7 @@ struct thread_info { #define _TIF_BLOCKSTEP (1 << TIF_BLOCKSTEP) #define _TIF_SECCOMP (1 << TIF_SECCOMP) #define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT) +#define _TIF_NOTIFY_IPI (1 << TIF_NOTIFY_IPI) #define _TIF_USER_WORK_MASK (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | \ _TIF_NEED_RESCHED | _TIF_NOTIFY_SIGNAL)