From patchwork Wed Nov 11 22:17:57 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mathieu Poirier X-Patchwork-Id: 7598431 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 267C59F2E9 for ; Wed, 11 Nov 2015 22:26:31 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id EBB542054D for ; Wed, 11 Nov 2015 22:26:29 +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 AF94A20435 for ; Wed, 11 Nov 2015 22:26:28 +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 1ZwdoJ-0002lG-BA; Wed, 11 Nov 2015 22:24:11 +0000 Received: from mail-pa0-x22c.google.com ([2607:f8b0:400e:c03::22c]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Zwdk7-00060c-0A for linux-arm-kernel@lists.infradead.org; Wed, 11 Nov 2015 22:20:07 +0000 Received: by padhx2 with SMTP id hx2so42980838pad.1 for ; Wed, 11 Nov 2015 14:19:30 -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=bkNnVK1WP2vuXaDJysaLL3wKhPNtouua7ulrbjBZeGk=; b=GbSq5EMMV/s3gT7yNsHy7ccAdxTKb4+9oFcQGxFMi3/7XF0MN9ZJRKD+tzVet7aFOr Dnz+QuO7O3Ncl7LKE286Tsfzde45Jb1PJjfbLaA8vcPMeCQ6K3IQuYdf/+ykwAutESbH kN8CgANKTXiU8L4rlMb30hz0yD3oC/svKbrQ/Vu4O5MbPb2ay5p9rDP1tFP9ZXbpBVzl jYl+07FzmHIhGwHzaWMZm+hEBJmWeW0p2RtdWHyefnpHFoTyrypuvl1N9Enpdq116B/T z/Aix03Rbi0cfaWSZe5esctYXZg/zHiEmmrgLhjhyanSlGjPbB2Low0lyG6+E0dIcDOm Lb/Q== 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=bkNnVK1WP2vuXaDJysaLL3wKhPNtouua7ulrbjBZeGk=; b=RqN6ql8gRaK5JxuXsYPEbCuj75d8zJWulKD6DxMd3Lbpvzmz+EML5Jo7yRom+jBL4I TVRCRE1TNuJKrhauPjx0LOjVlS0v9BnGdx8y5nTQfsP6SWZVq0MJLEgTEJlYdAL+tN3w KDcHWX1eqXbDZKJKSZ1jlNqdTxSSIwk1ic0EmAi8zEFgggtmhG8XQoJN6oFVITl9J8kN ODbZLfJpJRe4aC5MPm38cGZzlRejGehfjRCCXb20ATzoClPxxNExYr0Bmdh0e2p9ta1D gMtV/OhPKJlAH//JtuPlOZG5Mu1zL/fx7E6n7AzQaHdErpuUXZjEM4v+yR1SF3dO9ne2 Q0og== X-Gm-Message-State: ALoCoQlEsq8TPcJQ2JTHXhin3rRPTNC5KhWjNoOMBi7hUkERPOAL5+34ZdsMcP56Y7vQv9vyBsmD X-Received: by 10.66.227.231 with SMTP id sd7mr17793165pac.60.1447280370420; Wed, 11 Nov 2015 14:19:30 -0800 (PST) Received: from t430.cg.shawcable.net ([184.64.168.246]) by smtp.gmail.com with ESMTPSA id h10sm11156697pat.7.2015.11.11.14.19.28 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 11 Nov 2015 14:19:29 -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: [PATCH V3 07/26] coresight: moving PM runtime operations to core framework Date: Wed, 11 Nov 2015 15:17:57 -0700 Message-Id: <1447280296-19147-8-git-send-email-mathieu.poirier@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1447280296-19147-1-git-send-email-mathieu.poirier@linaro.org> References: <1447280296-19147-1-git-send-email-mathieu.poirier@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20151111_141951_257016_F9D726B6 X-CRM114-Status: GOOD ( 16.17 ) 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, fainelli@broadcom.com, 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=-4.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED,RP_MATCHES_RCVD,T_DKIM_INVALID,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 Moving PM runtime operations in Coresight devices enable() and disable() API to the framework core when a path is setup. That way the runtime core doesn't have to be involved everytime a path is enabled. It also avoids calling runtime PM operations in IRQ context. Signed-off-by: Mathieu Poirier --- drivers/hwtracing/coresight/coresight-etb10.c | 4 ---- drivers/hwtracing/coresight/coresight-etm3x.c | 3 --- drivers/hwtracing/coresight/coresight-etm4x.c | 6 ------ drivers/hwtracing/coresight/coresight-funnel.c | 2 -- drivers/hwtracing/coresight/coresight-replicator-qcom.c | 4 ---- drivers/hwtracing/coresight/coresight-replicator.c | 2 -- drivers/hwtracing/coresight/coresight-tmc.c | 5 ----- drivers/hwtracing/coresight/coresight-tpiu.c | 2 -- drivers/hwtracing/coresight/coresight.c | 9 ++++++++- 9 files changed, 8 insertions(+), 29 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-etb10.c b/drivers/hwtracing/coresight/coresight-etb10.c index 77d0f9c1118d..1301edc44629 100644 --- a/drivers/hwtracing/coresight/coresight-etb10.c +++ b/drivers/hwtracing/coresight/coresight-etb10.c @@ -137,8 +137,6 @@ static int etb_enable(struct coresight_device *csdev) struct etb_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); unsigned long flags; - pm_runtime_get_sync(drvdata->dev); - spin_lock_irqsave(&drvdata->spinlock, flags); etb_enable_hw(drvdata); drvdata->enable = true; @@ -247,8 +245,6 @@ static void etb_disable(struct coresight_device *csdev) drvdata->enable = false; spin_unlock_irqrestore(&drvdata->spinlock, flags); - pm_runtime_put(drvdata->dev); - dev_info(drvdata->dev, "ETB disabled\n"); } diff --git a/drivers/hwtracing/coresight/coresight-etm3x.c b/drivers/hwtracing/coresight/coresight-etm3x.c index 74526f044a06..660c1e07601b 100644 --- a/drivers/hwtracing/coresight/coresight-etm3x.c +++ b/drivers/hwtracing/coresight/coresight-etm3x.c @@ -358,7 +358,6 @@ static int etm_enable(struct coresight_device *csdev) struct etm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); int ret; - pm_runtime_get_sync(csdev->dev.parent); spin_lock(&drvdata->spinlock); /* @@ -382,7 +381,6 @@ static int etm_enable(struct coresight_device *csdev) return 0; err: spin_unlock(&drvdata->spinlock); - pm_runtime_put(csdev->dev.parent); return ret; } @@ -439,7 +437,6 @@ static void etm_disable(struct coresight_device *csdev) spin_unlock(&drvdata->spinlock); put_online_cpus(); - pm_runtime_put(csdev->dev.parent); dev_info(drvdata->dev, "ETM tracing disabled\n"); } diff --git a/drivers/hwtracing/coresight/coresight-etm4x.c b/drivers/hwtracing/coresight/coresight-etm4x.c index 254a81a4e6f4..a62e94814c37 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x.c +++ b/drivers/hwtracing/coresight/coresight-etm4x.c @@ -72,7 +72,6 @@ static int etm4_trace_id(struct coresight_device *csdev) if (!drvdata->enable) return drvdata->trcid; - pm_runtime_get_sync(drvdata->dev); spin_lock_irqsave(&drvdata->spinlock, flags); CS_UNLOCK(drvdata->base); @@ -81,7 +80,6 @@ static int etm4_trace_id(struct coresight_device *csdev) CS_LOCK(drvdata->base); spin_unlock_irqrestore(&drvdata->spinlock, flags); - pm_runtime_put(drvdata->dev); return trace_id; } @@ -185,7 +183,6 @@ static int etm4_enable(struct coresight_device *csdev) struct etmv4_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); int ret; - pm_runtime_get_sync(drvdata->dev); spin_lock(&drvdata->spinlock); /* @@ -205,7 +202,6 @@ static int etm4_enable(struct coresight_device *csdev) return 0; err: spin_unlock(&drvdata->spinlock); - pm_runtime_put(drvdata->dev); return ret; } @@ -254,8 +250,6 @@ static void etm4_disable(struct coresight_device *csdev) spin_unlock(&drvdata->spinlock); put_online_cpus(); - pm_runtime_put(drvdata->dev); - dev_info(drvdata->dev, "ETM tracing disabled\n"); } diff --git a/drivers/hwtracing/coresight/coresight-funnel.c b/drivers/hwtracing/coresight/coresight-funnel.c index 2e36bde7fcb4..a47bba361833 100644 --- a/drivers/hwtracing/coresight/coresight-funnel.c +++ b/drivers/hwtracing/coresight/coresight-funnel.c @@ -69,7 +69,6 @@ static int funnel_enable(struct coresight_device *csdev, int inport, { struct funnel_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); - pm_runtime_get_sync(drvdata->dev); funnel_enable_hw(drvdata, inport); dev_info(drvdata->dev, "FUNNEL inport %d enabled\n", inport); @@ -95,7 +94,6 @@ static void funnel_disable(struct coresight_device *csdev, int inport, struct funnel_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); funnel_disable_hw(drvdata, inport); - pm_runtime_put(drvdata->dev); dev_info(drvdata->dev, "FUNNEL inport %d disabled\n", inport); } diff --git a/drivers/hwtracing/coresight/coresight-replicator-qcom.c b/drivers/hwtracing/coresight/coresight-replicator-qcom.c index 584059e9e866..8149087e8966 100644 --- a/drivers/hwtracing/coresight/coresight-replicator-qcom.c +++ b/drivers/hwtracing/coresight/coresight-replicator-qcom.c @@ -48,8 +48,6 @@ static int replicator_enable(struct coresight_device *csdev, int inport, { struct replicator_state *drvdata = dev_get_drvdata(csdev->dev.parent); - pm_runtime_get_sync(drvdata->dev); - CS_UNLOCK(drvdata->base); /* @@ -86,8 +84,6 @@ static void replicator_disable(struct coresight_device *csdev, int inport, CS_LOCK(drvdata->base); - pm_runtime_put(drvdata->dev); - dev_info(drvdata->dev, "REPLICATOR disabled\n"); } diff --git a/drivers/hwtracing/coresight/coresight-replicator.c b/drivers/hwtracing/coresight/coresight-replicator.c index 963ac197c253..a0fbb2e05389 100644 --- a/drivers/hwtracing/coresight/coresight-replicator.c +++ b/drivers/hwtracing/coresight/coresight-replicator.c @@ -41,7 +41,6 @@ static int replicator_enable(struct coresight_device *csdev, int inport, { struct replicator_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); - pm_runtime_get_sync(drvdata->dev); dev_info(drvdata->dev, "REPLICATOR enabled\n"); return 0; } @@ -51,7 +50,6 @@ static void replicator_disable(struct coresight_device *csdev, int inport, { struct replicator_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); - pm_runtime_put(drvdata->dev); dev_info(drvdata->dev, "REPLICATOR disabled\n"); } diff --git a/drivers/hwtracing/coresight/coresight-tmc.c b/drivers/hwtracing/coresight/coresight-tmc.c index a57c7ec1661f..5e2a71767870 100644 --- a/drivers/hwtracing/coresight/coresight-tmc.c +++ b/drivers/hwtracing/coresight/coresight-tmc.c @@ -242,12 +242,9 @@ static int tmc_enable(struct tmc_drvdata *drvdata, enum tmc_mode mode) { unsigned long flags; - pm_runtime_get_sync(drvdata->dev); - spin_lock_irqsave(&drvdata->spinlock, flags); if (drvdata->reading) { spin_unlock_irqrestore(&drvdata->spinlock, flags); - pm_runtime_put(drvdata->dev); return -EBUSY; } @@ -381,8 +378,6 @@ out: drvdata->enable = false; spin_unlock_irqrestore(&drvdata->spinlock, flags); - pm_runtime_put(drvdata->dev); - dev_info(drvdata->dev, "TMC disabled\n"); } diff --git a/drivers/hwtracing/coresight/coresight-tpiu.c b/drivers/hwtracing/coresight/coresight-tpiu.c index 7214efd10db5..e19b86e61c38 100644 --- a/drivers/hwtracing/coresight/coresight-tpiu.c +++ b/drivers/hwtracing/coresight/coresight-tpiu.c @@ -74,7 +74,6 @@ static int tpiu_enable(struct coresight_device *csdev) { struct tpiu_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); - pm_runtime_get_sync(csdev->dev.parent); tpiu_enable_hw(drvdata); dev_info(drvdata->dev, "TPIU enabled\n"); @@ -98,7 +97,6 @@ static void tpiu_disable(struct coresight_device *csdev) struct tpiu_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); tpiu_disable_hw(drvdata); - pm_runtime_put(csdev->dev.parent); dev_info(drvdata->dev, "TPIU disabled\n"); } diff --git a/drivers/hwtracing/coresight/coresight.c b/drivers/hwtracing/coresight/coresight.c index 4beea67fd5a1..a4103a216e33 100644 --- a/drivers/hwtracing/coresight/coresight.c +++ b/drivers/hwtracing/coresight/coresight.c @@ -24,6 +24,7 @@ #include #include #include +#include #include "coresight-priv.h" @@ -361,7 +362,8 @@ out: /* * A path from this element to a sink has been found. The elements * leading to the sink are already enqueued, all that is left to do - * is add a node for this element. + * is tell the PM runtime core we need this element and add a node + * for it. */ node = kzalloc(sizeof(struct coresight_node), GFP_KERNEL); if (!node) @@ -369,6 +371,7 @@ out: node->csdev = csdev; list_add(&node->link, path); + pm_runtime_get_sync(csdev->dev.parent); return 0; } @@ -400,9 +403,13 @@ struct list_head *coresight_build_path(struct coresight_device *csdev) */ void coresight_release_path(struct list_head *path) { + struct coresight_device *csdev; struct coresight_node *nd, *next; list_for_each_entry_safe(nd, next, path, link) { + csdev = nd->csdev; + + pm_runtime_put_sync(csdev->dev.parent); list_del(&nd->link); kfree(nd); }