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Wysocki" , Lorenzo Pieralisi , Fabio Estevam , Lucas Stach , Aisheng Dong Subject: [RFC 1/7] sched: idle: Add sched get idle state helper Thread-Topic: [RFC 1/7] sched: idle: Add sched get idle state helper Thread-Index: AQHU5J/wYerhjHZf+0GO74u+rDGu6Q== Date: Wed, 27 Mar 2019 13:21:07 +0000 Message-ID: <1553692845-20983-2-git-send-email-abel.vesa@nxp.com> References: <1553692845-20983-1-git-send-email-abel.vesa@nxp.com> In-Reply-To: <1553692845-20983-1-git-send-email-abel.vesa@nxp.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: VI1PR0701CA0038.eurprd07.prod.outlook.com (2603:10a6:800:90::24) To AM0PR04MB5779.eurprd04.prod.outlook.com (2603:10a6:208:131::23) x-originating-ip: [212.146.100.6] authentication-results: spf=none (sender IP is ) smtp.mailfrom=abel.vesa@nxp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.7.4 x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: b86b3313-a923-40fb-4cc8-08d6b2b711ed x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0; PCL:0; RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600127)(711020)(4605104)(4618075)(2017052603328)(7153060)(7193020); SRVR:AM0PR04MB6051; x-ms-traffictypediagnostic: AM0PR04MB6051: x-microsoft-antispam-prvs: x-forefront-prvs: 0989A7979C x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(366004)(136003)(39860400002)(396003)(346002)(376002)(199004)(189003)(25786009)(14444005)(68736007)(4326008)(6436002)(5660300002)(6116002)(71200400001)(71190400001)(3846002)(256004)(8936002)(8676002)(6636002)(2501003)(66066001)(305945005)(2906002)(53936002)(81156014)(6512007)(7736002)(81166006)(7416002)(97736004)(6486002)(36756003)(54906003)(44832011)(50226002)(486006)(106356001)(6506007)(386003)(186003)(110136005)(102836004)(446003)(14454004)(476003)(86362001)(99286004)(11346002)(52116002)(478600001)(316002)(2616005)(26005)(105586002)(76176011)(921003)(1121003); DIR:OUT; SFP:1101; SCL:1; SRVR:AM0PR04MB6051; H:AM0PR04MB5779.eurprd04.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; A:1; MX:1; received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: vmOOorQZXAGQNM5Depghx6Zq76DGExyX1Hv/jWWvLTso5nqYjGo/4ee2wHaBhccJRjZEryZyxd+Kx4tAerSosZjlLqQGoAkDNymzsNBogrl2Swj1BoCxc50jA3BF/Gx2/eqQ8nuSEjD+DwETAtX/SNY0vVHmeoaeFBM/ecUw1G10zSU/9BrOCXKp7ZqxdrwJ+orprLAJTnQ/zabmOQz15Tw8WL8aNyAEba4vGuK3EGWehHG/vgaJ3YU0GEL3FK1DTLzdOc43Yt6oOPUIirKygx/CCNrv7IWDy3qLGUUTBSdRLdfUgZDAQdl7zZSXfkKDAox9MGBZWDbWeefoqx28T3Dr+FyIAnmIB/I+L1TWVm5V2zp9px0Ur7ygWwcs7+8/A/JIejKKXrmOoCvtuJwvXYloaRWnezR0ZQIQKPycVFc= MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: b86b3313-a923-40fb-4cc8-08d6b2b711ed X-MS-Exchange-CrossTenant-originalarrivaltime: 27 Mar 2019 13:21:08.2226 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB6051 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190327_062113_956576_D9F9E59F X-CRM114-Status: GOOD ( 12.05 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Abel Vesa , "linux-pm@vger.kernel.org" , dl-linux-imx , "linux-arm-kernel@lists.infradead.org" , Linux Kernel Mailing List Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP This helper is useful in order to get the idle state of a specific cpu. Signed-off-by: Abel Vesa --- include/linux/cpuidle.h | 1 + kernel/sched/idle.c | 11 +++++++++++ 2 files changed, 12 insertions(+) diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index 3b39472..88a9119 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -211,6 +211,7 @@ static inline void cpuidle_use_deepest_state(bool enable) /* kernel/sched/idle.c */ extern void sched_idle_set_state(struct cpuidle_state *idle_state); +extern struct cpuidle_state *sched_idle_get_state(int cpu); extern void default_idle_call(void); #ifdef CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED diff --git a/kernel/sched/idle.c b/kernel/sched/idle.c index f5516ba..484825d 100644 --- a/kernel/sched/idle.c +++ b/kernel/sched/idle.c @@ -21,6 +21,17 @@ void sched_idle_set_state(struct cpuidle_state *idle_state) idle_set_state(this_rq(), idle_state); } +/** + * sched_idle_get_state - Get idle state for the specified CPU. + * @index: CPU index. + */ + +struct cpuidle_state *sched_idle_get_state(int cpu) +{ + return idle_get_state(cpu_rq(cpu)); +} + + static int __read_mostly cpu_idle_force_poll; void cpu_idle_poll_ctrl(bool enable)