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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 BL6PEPF00022575.mail.protection.outlook.com (10.167.249.43) 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 18:21:47 +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 13:21:40 -0500 From: K Prateek Nayak To: CC: "Gautham R. Shenoy" , K Prateek Nayak , Guo Ren , "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 11/14] csky/thread_info: Introduce TIF_NOTIFY_IPI flag Date: Thu, 13 Jun 2024 18:16:10 +0000 Message-ID: <20240613181613.4329-12-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: BL6PEPF00022575:EE_|DS7PR12MB8370:EE_ X-MS-Office365-Filtering-Correlation-Id: 60141e5f-76bb-47c6-25c5-08dc8bd5b00f 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 18:21:47.6126 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 60141e5f-76bb-47c6-25c5-08dc8bd5b00f 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: BL6PEPF00022575.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS7PR12MB8370 Add support for TIF_NOTIFY_IPI on C-SKY. 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: Guo Ren 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-csky@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-pm@vger.kernel.org Acked-by: Guo Ren Signed-off-by: K Prateek Nayak Acked-by: Guo Ren --- v1..v2: o Collected the ack. Thank you :) --- arch/csky/include/asm/thread_info.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/csky/include/asm/thread_info.h b/arch/csky/include/asm/thread_info.h index b5ed788f0c68..9bc7a037c476 100644 --- a/arch/csky/include/asm/thread_info.h +++ b/arch/csky/include/asm/thread_info.h @@ -61,6 +61,7 @@ static inline struct thread_info *current_thread_info(void) #define TIF_SYSCALL_TRACEPOINT 5 /* syscall tracepoint instrumentation */ #define TIF_SYSCALL_AUDIT 6 /* syscall auditing */ #define TIF_NOTIFY_SIGNAL 7 /* signal notifications exist */ +#define TIF_NOTIFY_IPI 8 /* Pending IPI on TIF_POLLLING idle CPU */ #define TIF_POLLING_NRFLAG 16 /* poll_idle() is TIF_NEED_RESCHED */ #define TIF_MEMDIE 18 /* is terminating due to OOM killer */ #define TIF_RESTORE_SIGMASK 20 /* restore signal mask in do_signal() */ @@ -73,6 +74,7 @@ static inline struct thread_info *current_thread_info(void) #define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT) #define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) #define _TIF_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL) +#define _TIF_NOTIFY_IPI (1 << TIF_NOTIFY_IPI) #define _TIF_UPROBE (1 << TIF_UPROBE) #define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) #define _TIF_MEMDIE (1 << TIF_MEMDIE)