From patchwork Fri Aug 10 14:52:29 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Georgi Djakov X-Patchwork-Id: 143944 Delivered-To: patch@linaro.org Received: by 2002:a2e:9754:0:0:0:0:0 with SMTP id f20-v6csp49811ljj; Fri, 10 Aug 2018 07:52:54 -0700 (PDT) X-Google-Smtp-Source: AA+uWPy9edvTrVjbEupXEvh/hLyo+0d6EIhXvCD+v0KtToIugU0fuZAMGmNnptH/If2kyvyfGdjw X-Received: by 2002:a62:198e:: with SMTP id 136-v6mr7470939pfz.103.1533912774128; Fri, 10 Aug 2018 07:52:54 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1533912774; cv=none; d=google.com; s=arc-20160816; b=q5O/D0QAjFB+uTOlA3dElUf3scD1nfO+XQTIh3Z5ZrVmwA+jCYNhmm4xhb87WvqwY/ thjoSIayGZRuBIr4+213NrmI3+fmwwZ9on1eXt9rJAchjlm8+hJLOyazsjJHb19wClBR z665LVJU92cO+bJDwIEMyj4MYEVMyYvsqMTDJarTXMDebAbQ82MC4Fje+o4y8N3K703Z zbaoKMs6OCGVYtqqVcWJzZZjs9VnZwEPZ973XkPqzKN5wki8XDWqsNU7v0IHitwnsX5r oJzQKr36LEZ/XhIzPCmjRRY8k+SdyozEVD+Rlj2XzQ1nztdGH593+STzoRlo9ni0Av2F 8tow== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:in-reply-to:message-id:date :subject:cc:to:from:dkim-signature:arc-authentication-results; bh=K5qYFSU+P7Ie0HuaSbBHj2ureU4ns5TmNVNvVaDKFEI=; b=N2I1vZNKT5drA8OlM55Orb4e5byQxaZYf1/lGBdQBmunKQ/zcL0671A8Q+EiaZMgtc 57B/FRKRx7VjpCLYB5FuLZHfWQUigkSsrd2koJgsIsHmjgnTakrkq9cNXoQ7MD3ib0P9 +YcIb2wfhtZvNNe4DqvHTOhADxR1zghkqJwwvoXRZgqAwtqfyy5h0vI8WldDYxGJHobT GbB4ZQG4sjfPjPXKUxnI2V3+0iqZg2MAOp8TTDGZpiy84PFKQBPzLA7nXQFy1mtvvdiT RMblc8vuEZCv6jcT4VhQ9CUMpFEThHVIkKlglYcK7LTrQnsdUwO5W0O2AiQ9NfYW0dxa q/qA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=Oc9dYoU0; spf=pass (google.com: best guess record for domain of devicetree-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=devicetree-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id 127-v6si9200643pgi.38.2018.08.10.07.52.53; Fri, 10 Aug 2018 07:52:54 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of devicetree-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=Oc9dYoU0; spf=pass (google.com: best guess record for domain of devicetree-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=devicetree-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728438AbeHJRXF (ORCPT + 5 others); Fri, 10 Aug 2018 13:23:05 -0400 Received: from mail-wr1-f67.google.com ([209.85.221.67]:42593 "EHLO mail-wr1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728278AbeHJRXF (ORCPT ); Fri, 10 Aug 2018 13:23:05 -0400 Received: by mail-wr1-f67.google.com with SMTP id e7-v6so8533192wrs.9 for ; Fri, 10 Aug 2018 07:52:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=K5qYFSU+P7Ie0HuaSbBHj2ureU4ns5TmNVNvVaDKFEI=; b=Oc9dYoU0IIx5oyfSasJ96vWcCRexjQ9IESwDjDMzi/7iE24sL0+RpUUJPxcQbTnN3l B2B4PriMi1Wy9xWikF3BHBPvxuteu2AZjSMn4zRPuk+chyo9w+42MLzxXpu3M4J8EPb1 bL2C2lDdK9kINRngbQ5J7tppzo/vV+UXjhtZs= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=K5qYFSU+P7Ie0HuaSbBHj2ureU4ns5TmNVNvVaDKFEI=; b=X4qTP/X5IZ1wfntVJE7LknzHv0NLVZc+2GUYgJJPCyw2PWsU/QDis0IORVCRjj105v WtrtofB0L0kq2Z96CIwqd5KKE8xWevB5tlyUo8ntH+uRAENvdfmDzjdubqx6ENm3F5dG NDsRFWLn4yqiNssYqaZGeCH1N39vPYUZ7pl10N97hUlvsoluTbaoGJuGl/XZtun27Poo aw4d/ZapsnKC3ke/rirM07rfbktG3bNWtTMJx2zjviiKt/cLVZ/8UOKZSMltHk1O46j9 gh47+NjDAOKaRRl3wyeX50O4MwZruHz/krVJXSu7cxEG0aw9AGXobh6llp+IyVVPzQV3 NuHQ== X-Gm-Message-State: AOUpUlFK8ffz0Yqq83mK9l4OWpDpBX/bhpvOb9ltoXpjomIVgPhwy37/ E8sn5Lq2mz4h8vfBO48ZIKXH3A== X-Received: by 2002:adf:adc9:: with SMTP id w67-v6mr4382476wrc.135.1533912770222; Fri, 10 Aug 2018 07:52:50 -0700 (PDT) Received: from localhost.localdomain ([212.45.67.2]) by smtp.googlemail.com with ESMTPSA id 9-v6sm19842700wrb.48.2018.08.10.07.52.48 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 10 Aug 2018 07:52:49 -0700 (PDT) From: Georgi Djakov To: linux-pm@vger.kernel.org, gregkh@linuxfoundation.org Cc: rjw@rjwysocki.net, robh+dt@kernel.org, mturquette@baylibre.com, khilman@baylibre.com, vincent.guittot@linaro.org, skannan@codeaurora.org, bjorn.andersson@linaro.org, amit.kucheria@linaro.org, seansw@qti.qualcomm.com, daidavid1@codeaurora.org, evgreen@chromium.org, mark.rutland@arm.com, lorenzo.pieralisi@arm.com, abailon@baylibre.com, arnd@arndb.de, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, georgi.djakov@linaro.org Subject: [PATCH v8 4/8] interconnect: Add debugfs support Date: Fri, 10 Aug 2018 17:52:29 +0300 Message-Id: <20180810145233.16466-5-georgi.djakov@linaro.org> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180810145233.16466-1-georgi.djakov@linaro.org> References: <20180810145233.16466-1-georgi.djakov@linaro.org> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add a functionality to provide information about the current constraints per each node and provider. Signed-off-by: Georgi Djakov Reviewed-by: Evan Green --- drivers/interconnect/core.c | 78 +++++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c index 8f874d1b0a0f..288ef83c3bc0 100644 --- a/drivers/interconnect/core.c +++ b/drivers/interconnect/core.c @@ -6,6 +6,7 @@ * Author: Georgi Djakov */ +#include #include #include #include @@ -17,10 +18,12 @@ #include #include #include +#include static DEFINE_IDR(icc_idr); static LIST_HEAD(icc_provider_list); static DEFINE_MUTEX(icc_lock); +static struct dentry *icc_debugfs_dir; /** * struct icc_req - constraints that are attached to each node @@ -49,6 +52,62 @@ struct icc_path { struct icc_req reqs[]; }; +#ifdef CONFIG_DEBUG_FS + +static void icc_summary_show_one(struct seq_file *s, struct icc_node *n) +{ + if (!n) + return; + + seq_printf(s, "%-30s %12d %12d\n", + n->name, n->avg_bw, n->peak_bw); +} + +static int icc_summary_show(struct seq_file *s, void *data) +{ + struct icc_provider *provider; + + seq_puts(s, " node avg peak\n"); + seq_puts(s, "--------------------------------------------------------\n"); + + mutex_lock(&icc_lock); + + list_for_each_entry(provider, &icc_provider_list, provider_list) { + struct icc_node *n; + + list_for_each_entry(n, &provider->nodes, node_list) { + struct icc_req *r; + + icc_summary_show_one(s, n); + hlist_for_each_entry(r, &n->req_list, req_node) { + if (!r->dev) + continue; + + seq_printf(s, " %-26s %12d %12d\n", + dev_name(r->dev), r->avg_bw, + r->peak_bw); + } + } + } + + mutex_unlock(&icc_lock); + + return 0; +} + +static int icc_summary_open(struct inode *inode, struct file *file) +{ + return single_open(file, icc_summary_show, inode->i_private); +} + +static const struct file_operations icc_summary_fops = { + .open = icc_summary_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; +#endif + static struct icc_node *node_find(const int id) { return idr_find(&icc_idr, id); @@ -646,6 +705,25 @@ int icc_provider_del(struct icc_provider *provider) } EXPORT_SYMBOL_GPL(icc_provider_del); +static int __init icc_init(void) +{ +#ifdef CONFIG_DEBUG_FS + icc_debugfs_dir = debugfs_create_dir("interconnect", NULL); + debugfs_create_file("interconnect_summary", 0444, + icc_debugfs_dir, NULL, &icc_summary_fops); +#endif + return 0; +} + +static void __exit icc_exit(void) +{ +#ifdef CONFIG_DEBUG_FS + debugfs_remove_recursive(icc_debugfs_dir); +#endif +} +module_init(icc_init); +module_exit(icc_exit); + MODULE_AUTHOR("Georgi Djakov