From patchwork Wed Jun 20 12:11:36 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Georgi Djakov X-Patchwork-Id: 10477165 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id B8AD0604D3 for ; Wed, 20 Jun 2018 12:13:47 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A9F051FF60 for ; Wed, 20 Jun 2018 12:13:47 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9E9C6284DA; Wed, 20 Jun 2018 12:13:47 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4FFCD1FF60 for ; Wed, 20 Jun 2018 12:13:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753541AbeFTMNa (ORCPT ); Wed, 20 Jun 2018 08:13:30 -0400 Received: from mail-wm0-f67.google.com ([74.125.82.67]:51140 "EHLO mail-wm0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753569AbeFTMLu (ORCPT ); Wed, 20 Jun 2018 08:11:50 -0400 Received: by mail-wm0-f67.google.com with SMTP id e16-v6so5631271wmd.0 for ; Wed, 20 Jun 2018 05:11:50 -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=mMiG6cM8VBvBAXZfGrxSfXokkjogyEYvlGb3JfwBdAo=; b=amUAOkXlniCfXibXy+jGsZmSGD6ZETsVvMsqABtHU6TJaWv+cPaqVbZxo9klgmFDLO Cp/GmWzH3c9zDEhTrfpdQRwDYt1u3XG3ZEB7CDuFqjUnCvRrP+MJeajW24Rdrcln/DAP hNaTlvkEBBonTN9r0pWH0Wd5rhEEVIWlr1p98= 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=mMiG6cM8VBvBAXZfGrxSfXokkjogyEYvlGb3JfwBdAo=; b=PKadoUoScJ7afJkIWv+o1wmdTpgxHKPPa8MjNBL4EH6iF4YhCqF++6d002jYDXEjZT Zq1fYu3tyM00X6vgVDbAUHGkstycRWgA4tn8UDyPoyyvtSbUTXu4ls9ny93rLgVeLGYL jOXKk3NpBk1991MNYkK12SPKlplvAW1Y3UiExKK+ix2fwOR1tkhCZ9hAtGgZoEg9pkb5 n75td6t9lpsZjBxbfilD9yQAywHj9j0qzTeygoxPjjse5gatgrO/00dGAmexfw435PFW UTbuzFmC0g2ScRqidMEoaGOK2opv9hlLJXErcBQoGfLqtiUGgtURyW2MNw8XPT6iT8pL QnyA== X-Gm-Message-State: APt69E0sfuqTx0SHp48W+OQ+DmEXIgNj195zVLs7UdvG/VjQ9XKiI/wU DED5BmNNpBTZVg7MbJSbGj1gAKSgdnw= X-Google-Smtp-Source: ADUXVKL5tBABOgyKWh0ins7l1WEB2JCn/AoS4IfFPw0KbW0usHtP+TByU5DJyE9OLMaDRIbK004zgQ== X-Received: by 2002:a1c:ea9b:: with SMTP id g27-v6mr1446987wmi.21.1529496709603; Wed, 20 Jun 2018 05:11:49 -0700 (PDT) Received: from localhost.localdomain ([212.45.67.2]) by smtp.googlemail.com with ESMTPSA id e14-v6sm1656483wmh.17.2018.06.20.05.11.47 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 20 Jun 2018 05:11:48 -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, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, georgi.djakov@linaro.org Subject: [PATCH v5 3/8] interconnect: Add debugfs support Date: Wed, 20 Jun 2018 15:11:36 +0300 Message-Id: <20180620121141.15403-4-georgi.djakov@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180620121141.15403-1-georgi.djakov@linaro.org> References: <20180620121141.15403-1-georgi.djakov@linaro.org> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add a functionality to provide information about the current constraints per each node and provider. Signed-off-by: Georgi Djakov --- drivers/interconnect/core.c | 78 +++++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c index e7f96fc6722e..dafc001ce758 100644 --- a/drivers/interconnect/core.c +++ b/drivers/interconnect/core.c @@ -6,6 +6,7 @@ * Author: Georgi Djakov */ +#include #include #include #include @@ -15,10 +16,12 @@ #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 @@ -47,6 +50,81 @@ struct icc_path { struct icc_req reqs[0]; }; +#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, +}; + +static int __init icc_debugfs_init(void) +{ + struct dentry *file; + + icc_debugfs_dir = debugfs_create_dir("interconnect", NULL); + if (!icc_debugfs_dir) { + pr_err("interconnect: error creating debugfs directory\n"); + return -ENODEV; + } + + file = debugfs_create_file("interconnect_summary", 0444, + icc_debugfs_dir, NULL, &icc_summary_fops); + if (!file) + return -ENODEV; + + return 0; +} +late_initcall(icc_debugfs_init); +#endif + static struct icc_node *node_find(const int id) { struct icc_node *node;