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[2001:1868:205::9]) by mx.google.com with ESMTPS id ah10si21019696pad.118.2015.11.23.10.37.01 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 23 Nov 2015 10:37:02 -0800 (PST) Received-SPF: pass (google.com: domain of linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org designates 2001:1868:205::9 as permitted sender) client-ip=2001:1868:205::9; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org designates 2001:1868:205::9 as permitted sender) smtp.mailfrom=linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org; dkim=neutral (body hash did not verify) header.i=@linaro-org.20150623.gappssmtp.com Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1a0vxj-0001wq-UB; Mon, 23 Nov 2015 18:35:39 +0000 Received: from mail-pa0-x232.google.com ([2607:f8b0:400e:c03::232]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1a0vwX-00009i-RK for linux-arm-kernel@lists.infradead.org; Mon, 23 Nov 2015 18:34:32 +0000 Received: by padhx2 with SMTP id hx2so198914635pad.1 for ; Mon, 23 Nov 2015 10:34:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro-org.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=mJtCMODWSwgWbfJDn5XBAFGusvbTAom1iFHE/nOf6B0=; b=jW4cRCO8jIdsoP4kO7tBGMCRIUtgPqyo3pnQTcRgfAFmMYMpvir60V3fNM+a6bvxAP ROKs5AGSJVRLpDjXMOCmDJlgOaeuVE9R8KUsksgIafQKXwdMpOIUTlFO1h5EdYoERHPo n+5uRpVLwmNDvLJp8Mj6WaWdcFSpnr1dQyOdtRsDWmRVb0VJQYrGTjLac0M4Mjyakwar 1GPJXQSLDWOjBZPV6atbrIACL3veMZV+tnqt0feEazEyAGDSJ5R58lxr62BG4TlkzUYW BCP60U/kDRnoDk9HWsFQ06s3xwauOSp0TD6ea3ARQ6lOx9ipd2eW+8CzU/qHwp+gX0n9 mFSw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=mJtCMODWSwgWbfJDn5XBAFGusvbTAom1iFHE/nOf6B0=; b=DGRBHodewB8PIMJOK6ezqQ2HVxLTg7UsKCfuJOd8AwO7/m1hyv8VzZjj4TGzPpv77g Ac42xHkf4pxk3JnzwLLQCf8x8B31vpvPwAFQE/Zq1qHXooyi6qa5OnZ+mv9Y9C2yGkyn LMfxKT2GLgNYjng76O+Qg870l9NQwm3IObvSk/OOmeCfvFe5e6AqnWj/RhHbwXTCadCX Pm+WBCfzarDaqQBSHfme5pHowp3o2VhyGpf3ZiwMzvrK17Wp19Wkru19go8xoOO4xPGt An2NAT9eFnwUnbsZyL7vhQ7kUH7YQPZN6ma9384gRqzEE0ksIV2r/E9Kyv7hsIKa5k5W yASA== X-Gm-Message-State: ALoCoQkVXyUaLzQhFnNfxVnOYqOZ/T0wJS0SdT5Rl95MQhIRhSC5AuyQjDqaJJdPkmstBInSlcXA X-Received: by 10.66.142.136 with SMTP id rw8mr37657103pab.36.1448303644979; Mon, 23 Nov 2015 10:34:04 -0800 (PST) Received: from t430.cg.shawcable.net ([184.64.168.246]) by smtp.gmail.com with ESMTPSA id r20sm10865186pfa.93.2015.11.23.10.34.03 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 23 Nov 2015 10:34:04 -0800 (PST) From: Mathieu Poirier To: gregkh@linuxfoundation.org, a.p.zijlstra@chello.nl, alexander.shishkin@linux.intel.com, acme@kernel.org, mingo@redhat.com, corbet@lwn.net, nicolas.pitre@linaro.org Subject: [RESEND PATCH V4 05/26] coresight: etm3x: implementing 'cpu_id()' API Date: Mon, 23 Nov 2015 11:32:57 -0700 Message-Id: <1448303598-11249-6-git-send-email-mathieu.poirier@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1448303598-11249-1-git-send-email-mathieu.poirier@linaro.org> References: <1448303598-11249-1-git-send-email-mathieu.poirier@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20151123_103426_139318_B4AD388C X-CRM114-Status: GOOD ( 14.27 ) X-Spam-Score: -2.6 (--) X-Spam-Report: SpamAssassin version 3.4.0 on bombadil.infradead.org summary: Content analysis details: (-2.6 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [2607:f8b0:400e:c03:0:0:0:232 listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: al.grant@arm.com, pawel.moll@arm.com, linux-doc@vger.kernel.org, fainelli@broadcom.com, linux-kernel@vger.kernel.org, tor@ti.com, mike.leach@arm.com, zhang.chunyan@linaro.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org Other than plainly parsing the device tree there is no way to know which CPU a tracer is affined to. As such adding an interface to lookup the CPU field enclosed in the etm_drvdata structure that was initialised at boot time. Signed-off-by: Mathieu Poirier --- drivers/hwtracing/coresight/coresight-etm3x.c | 8 ++++++++ include/linux/coresight.h | 3 +++ 2 files changed, 11 insertions(+) -- 1.9.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel diff --git a/drivers/hwtracing/coresight/coresight-etm3x.c b/drivers/hwtracing/coresight/coresight-etm3x.c index 67af548a874d..74526f044a06 100644 --- a/drivers/hwtracing/coresight/coresight-etm3x.c +++ b/drivers/hwtracing/coresight/coresight-etm3x.c @@ -312,6 +312,13 @@ static void etm_enable_hw(void *info) dev_dbg(drvdata->dev, "cpu: %d enable smp call done\n", drvdata->cpu); } +static int etm_cpu_id(struct coresight_device *csdev) +{ + struct etm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); + + return drvdata->cpu; +} + int etm_get_trace_id(struct etm_drvdata *drvdata) { unsigned long flags; @@ -438,6 +445,7 @@ static void etm_disable(struct coresight_device *csdev) } static const struct coresight_ops_source etm_source_ops = { + .cpu_id = etm_cpu_id, .trace_id = etm_trace_id, .enable = etm_enable, .disable = etm_disable, diff --git a/include/linux/coresight.h b/include/linux/coresight.h index a7cabfa23b55..bf62b265bf52 100644 --- a/include/linux/coresight.h +++ b/include/linux/coresight.h @@ -205,12 +205,15 @@ struct coresight_ops_link { /** * struct coresight_ops_source - basic operations for a source * Operations available for sources. + * @cpu_id: returns the value of the CPU number this component + * is associated to. * @trace_id: returns the value of the component's trace ID as known to the HW. * @enable: enables tracing for a source. * @disable: disables tracing for a source. */ struct coresight_ops_source { + int (*cpu_id)(struct coresight_device *csdev); int (*trace_id)(struct coresight_device *csdev); int (*enable)(struct coresight_device *csdev); void (*disable)(struct coresight_device *csdev);