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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 18:22:33 +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 13:22:25 -0500 From: K Prateek Nayak To: CC: "Gautham R. Shenoy" , K Prateek Nayak , Dinh Nguyen , "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 13/14] nios2/thread_info: Introduce TIF_NOTIFY_IPI flag Date: Thu, 13 Jun 2024 18:16:12 +0000 Message-ID: <20240613181613.4329-14-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_|DS0PR12MB7582:EE_ X-MS-Office365-Filtering-Correlation-Id: 295db9ce-fe45-4cc8-8629-08dc8bd5cb2e 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 18:22:33.0230 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 295db9ce-fe45-4cc8-8629-08dc8bd5cb2e 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: DS0PR12MB7582 Add support for TIF_NOTIFY_IPI on Nios II. 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: Dinh Nguyen 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-kernel@vger.kernel.org Cc: linux-pm@vger.kernel.org Signed-off-by: K Prateek Nayak --- v1..v2: o No changes. --- arch/nios2/include/asm/thread_info.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/nios2/include/asm/thread_info.h b/arch/nios2/include/asm/thread_info.h index 5abac9893b32..24882fd5ad11 100644 --- a/arch/nios2/include/asm/thread_info.h +++ b/arch/nios2/include/asm/thread_info.h @@ -79,6 +79,7 @@ static inline struct thread_info *current_thread_info(void) #define TIF_SYSCALL_AUDIT 6 /* syscall auditing active */ #define TIF_NOTIFY_SIGNAL 7 /* signal notifications exist */ #define TIF_RESTORE_SIGMASK 9 /* restore signal mask in do_signal() */ +#define TIF_NOTIFY_IPI 10 /* Pending IPI on TIF_POLLLING idle CPU */ #define TIF_POLLING_NRFLAG 16 /* true if poll_idle() is polling TIF_NEED_RESCHED */ @@ -91,6 +92,7 @@ static inline struct thread_info *current_thread_info(void) #define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) #define _TIF_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL) #define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK) +#define _TIF_NOTIFY_IPI (1 << TIF_NOTIFY_IPI) #define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) /* work to do on interrupt/exception return */