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[209.132.180.67]) by mx.google.com with ESMTP id j12-v6si711120pgi.352.2018.08.31.07.02.06; Fri, 31 Aug 2018 07:02:07 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-arm-msm-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=DTwvFAll; spf=pass (google.com: best guess record for domain of linux-arm-msm-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-arm-msm-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 S1728724AbeHaSJm (ORCPT + 13 others); Fri, 31 Aug 2018 14:09:42 -0400 Received: from mail-wr1-f68.google.com ([209.85.221.68]:38702 "EHLO mail-wr1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728712AbeHaSJl (ORCPT ); Fri, 31 Aug 2018 14:09:41 -0400 Received: by mail-wr1-f68.google.com with SMTP id w11-v6so11330512wrc.5 for ; Fri, 31 Aug 2018 07:02:03 -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=ErPFSIw/4GM1+VgS/hfybgYofrFf349AuXGxD3gCkw0=; b=DTwvFAllH0XU0RUzsrbald8RDLAE+d8PxpfEDJMBea+zlwqwKnAv6JubLXdkUE/D/Q GjOBvBdpSMExTMUUzHLgu09otO23IttspZ+aVbJJmqDHVvbybE9fsDn9/V+Gde60dwKU aMrjTMyPXXJ3aGsMQ06yIpekmysFRR52QgbpQ= 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=ErPFSIw/4GM1+VgS/hfybgYofrFf349AuXGxD3gCkw0=; b=C+LcdqC+Ao37/ujRwTU8ofXnoK5pKAVCdMeRGmUd1YN6xS2K7hxD3AM/JN+HgG8oWo dlV5ETbO2G8kEViKUsp+6d+5nC5FeKtIHpBh+qGCRlQ+l0DLlOkwG+Wer9SwT3wj9eEg SnKI+b5aPsk/j6SkZL/XAoJkWuYT0L1qQDGF21WB8/e6urNgkCtO/NvEKaZpgcHn/g7z 1gsJiB6iUmQmON5MpU+b4MoLBQwnNheCmw+dA7SYealDbzxvR3+KcN1b7F8DgyM0Ubeo X/wsvilE4cSkDC1nZ6RkjxsHppmXF246MzMZNKeMmQByGhTMQgNV+9PHJJ0jAcn/9UDW DT/Q== X-Gm-Message-State: APzg51CJKCwSMBn6eApOHWaRKt9WpgAKefV4groMUXWG8l5SaUgM4q5+ Kl+q+ic9Mf/mxWboE/xinzs6fA== X-Received: by 2002:adf:ad47:: with SMTP id p65-v6mr11184733wrc.222.1535724121680; Fri, 31 Aug 2018 07:02:01 -0700 (PDT) Received: from localhost.localdomain ([212.45.67.2]) by smtp.googlemail.com with ESMTPSA id m68-v6sm8624513wmb.10.2018.08.31.07.01.59 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 31 Aug 2018 07:02:00 -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, maxime.ripard@bootlin.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 v9 4/8] interconnect: Add debugfs support Date: Fri, 31 Aug 2018 17:01:47 +0300 Message-Id: <20180831140151.13972-5-georgi.djakov@linaro.org> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180831140151.13972-1-georgi.djakov@linaro.org> References: <20180831140151.13972-1-georgi.djakov@linaro.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@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 ed0a6783ffc4..2740f1a441d8 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