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Fri, 17 Jan 2020 13:11:17 +0000 Received: from [10.32.36.146] (217.140.106.40) by LO2P123CA0027.GBRP123.PROD.OUTLOOK.COM (2603:10a6:600::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2644.19 via Frontend Transport; Fri, 17 Jan 2020 13:11:16 +0000 From: James Clark To: Will Deacon Subject: Re: [PATCH 1/1] Return EINVAL when precise_ip perf events are requested on Arm Thread-Topic: [PATCH 1/1] Return EINVAL when precise_ip perf events are requested on Arm Thread-Index: AQHVy5LeO0vQVupKYkmqxxzraShD1qfuzyKAgAAHXwCAAAGLgA== Date: Fri, 17 Jan 2020 13:11:16 +0000 Message-ID: <1fea63d9-9b8d-d5ff-d043-a1e8f6b9b862@arm.com> References: <20200115105855.13395-1-james.clark@arm.com> <20200115105855.13395-2-james.clark@arm.com> <20200117123920.GB8199@willie-the-truck> <20200117130543.GA9093@willie-the-truck> In-Reply-To: <20200117130543.GA9093@willie-the-truck> Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [217.140.106.40] x-clientproxiedby: LO2P123CA0027.GBRP123.PROD.OUTLOOK.COM (2603:10a6:600::15) To DB6PR0801MB1638.eurprd08.prod.outlook.com (2603:10a6:4:38::16) Authentication-Results-Original: spf=none (sender IP is ) smtp.mailfrom=James.Clark@arm.com; 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Ip=[63.35.35.123]; Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR08MB5550 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200117_051129_242761_1A759EAF X-CRM114-Status: GOOD ( 10.22 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Al Grant , Peter Zijlstra , "linux-kernel@vger.kernel.org" , Arnaldo Carvalho de Melo , Alexander Shishkin , Ingo Molnar , Tan Xiaojun , Namhyung Kim , nd , Jiri Olsa , "linux-arm-kernel@lists.infradead.org" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Will, Yes you're right, I've somehow managed to post a version of the patch from before I built and tested it. I will repost it shortly with the other change split out as well. Thanks James On 17/01/2020 13:05, Will Deacon wrote: >> On Wed, Jan 15, 2020 at 10:58:55AM +0000, James Clark wrote: >>> diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c >>> index df352b334ea7..4ddbdb93b3b6 100644 >>> --- a/drivers/perf/arm_pmu.c >>> +++ b/drivers/perf/arm_pmu.c >>> @@ -102,6 +102,9 @@ armpmu_map_event(struct perf_event *event, >>> u64 config = event->attr.config; >>> int type = event->attr.type; >>> >>> + if (event->attr.precise) >>> + return -EINVAL; > > Also, does this field even exist? Guessing you mean 'precise_ip', but > then that means this hasn't even seen a compiler :( > > Will > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel