From patchwork Sun Oct 18 18:24:25 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mathieu Poirier X-Patchwork-Id: 7431771 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 38716BEEA4 for ; Sun, 18 Oct 2015 18:28:52 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 54C362058A for ; Sun, 18 Oct 2015 18:28:51 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7250B20571 for ; Sun, 18 Oct 2015 18:28:50 +0000 (UTC) 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 1Znsg0-00068p-5b; Sun, 18 Oct 2015 18:27:24 +0000 Received: from mail-pa0-f47.google.com ([209.85.220.47]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Znseh-0004ln-4c for linux-arm-kernel@lists.infradead.org; Sun, 18 Oct 2015 18:26:04 +0000 Received: by pacfv9 with SMTP id fv9so70830277pac.3 for ; Sun, 18 Oct 2015 11:25:42 -0700 (PDT) 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=UhERS9JVq/xG5jf1bM9coi147VIefyRFSKbTos+ALdQ=; b=Pt/ePWGsE0BwEfHn1e9VfiPiEd1beb8X1vU9lV10wGEoKOTl24kWnj5XmK/EmCkBCG azyYqO3lycZt/5lZYEfYbm6BGUhMjcGdeC+D8WVlDxwIX1SzPMi+0VJ89M5OC04PouYl +jonOkLXKe1egF2nHyyBfzUGkocO6ZYNqO0tZ1wDmMiVdnjFE/abplzf6NBNp7BvUpIw C3mFlCQBOGYI5NIIajeO9CASr22ectzt3IARCpBdSJLF4H97ZdfN2sCJO/0Ln0bEASFo 3cCGIlPy9FKQCCLQGGgzv9bxAwxAlkVRBiRzQs/JKn90vKE4rK56XN83E13DwGP6mghO qCMw== X-Gm-Message-State: ALoCoQnUJdCh2YZ3pRpiOeIBsE3fIhZyIH2Bw3Ra4RMSVDCsIbXHlOksYR6IQxQ6HFh0SsQq38WT X-Received: by 10.68.110.165 with SMTP id ib5mr29625752pbb.58.1445192742393; Sun, 18 Oct 2015 11:25:42 -0700 (PDT) Received: from t430.cg.shawcable.net (S0106002369de4dac.cg.shawcable.net. [184.64.168.246]) by smtp.gmail.com with ESMTPSA id hq1sm20402076pbb.43.2015.10.18.11.25.40 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sun, 18 Oct 2015 11:25:41 -0700 (PDT) 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: [PATCH V2 08/30] coresight: etm3x: implementing 'cpu_id()' API Date: Sun, 18 Oct 2015 12:24:25 -0600 Message-Id: <1445192687-24112-9-git-send-email-mathieu.poirier@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1445192687-24112-1-git-send-email-mathieu.poirier@linaro.org> References: <1445192687-24112-1-git-send-email-mathieu.poirier@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20151018_112603_312507_90619610 X-CRM114-Status: GOOD ( 13.04 ) X-Spam-Score: -2.6 (--) 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, mathieu.poirier@linaro.org, pawel.moll@arm.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, adrian.hunter@intel.com, 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+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Adding an interface to lookup the CPU a tracer has been affined to along with a source operation allowing external customers to access it. Signed-off-by: Mathieu Poirier --- drivers/hwtracing/coresight/coresight-etm3x.c | 8 ++++++++ include/linux/coresight.h | 3 +++ 2 files changed, 11 insertions(+) diff --git a/drivers/hwtracing/coresight/coresight-etm3x.c b/drivers/hwtracing/coresight/coresight-etm3x.c index 3fe6433764d4..e199746bba05 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; @@ -444,6 +451,7 @@ static void sysfs_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, .sysfs_enable = sysfs_etm_enable, .sysfs_disable = sysfs_etm_disable, diff --git a/include/linux/coresight.h b/include/linux/coresight.h index 97155527dbdd..f9210df15f03 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. * @sysfs_enable: enables tracing for a source, from sysFS. * @sysfs_disable: disables tracing for a source, from sysFS. */ struct coresight_ops_source { + int (*cpu_id)(struct coresight_device *csdev); int (*trace_id)(struct coresight_device *csdev); int (*sysfs_enable)(struct coresight_device *csdev); void (*sysfs_disable)(struct coresight_device *csdev);