From patchwork Tue Jul 28 09:48:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ioana Ciornei X-Patchwork-Id: 1337707 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=nxp.com Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4BGBh16hbRz9sSd for ; Tue, 28 Jul 2020 19:48:33 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728463AbgG1Jsd (ORCPT ); Tue, 28 Jul 2020 05:48:33 -0400 Received: from inva020.nxp.com ([92.121.34.13]:59438 "EHLO inva020.nxp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728368AbgG1Jsa (ORCPT ); Tue, 28 Jul 2020 05:48:30 -0400 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 6EEE41A0064; Tue, 28 Jul 2020 11:48:28 +0200 (CEST) Received: from inva024.eu-rdc02.nxp.com (inva024.eu-rdc02.nxp.com [134.27.226.22]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 62EDF1A0054; Tue, 28 Jul 2020 11:48:28 +0200 (CEST) Received: from fsr-ub1864-126.ea.freescale.net (fsr-ub1864-126.ea.freescale.net [10.171.82.212]) by inva024.eu-rdc02.nxp.com (Postfix) with ESMTP id 3399C20328; Tue, 28 Jul 2020 11:48:28 +0200 (CEST) From: Ioana Ciornei To: davem@davemloft.net, netdev@vger.kernel.org Cc: Ioana Ciornei Subject: [PATCH net-next 2/2] dpaa2-eth: add reset control for debugfs statistics Date: Tue, 28 Jul 2020 12:48:12 +0300 Message-Id: <20200728094812.29002-3-ioana.ciornei@nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200728094812.29002-1-ioana.ciornei@nxp.com> References: <20200728094812.29002-1-ioana.ciornei@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Export two debugfs control files through which the user can reset the software kept statistics per CPU, per FQ, per channel - reset_stats - as well as those kept by HW - reset_mc_stats. This is especially useful in the context of debugging when there is a need for precise statistics per a run of the test. Signed-off-by: Ioana Ciornei --- .../freescale/dpaa2/dpaa2-eth-debugfs.c | 64 +++++++++++++++++++ 1 file changed, 64 insertions(+) diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.c index 56d9927fbfda..b1264ddb1ed2 100644 --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.c +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.c @@ -170,6 +170,62 @@ static const struct file_operations dpaa2_dbg_ch_ops = { .release = single_release, }; +static ssize_t dpaa2_dbg_reset_write(struct file *file, const char __user *buf, + size_t count, loff_t *offset) +{ + struct dpaa2_eth_priv *priv = file->private_data; + struct dpaa2_eth_drv_stats *percpu_extras; + struct rtnl_link_stats64 *percpu_stats; + struct dpaa2_eth_channel *ch; + struct dpaa2_eth_fq *fq; + int i; + + for_each_online_cpu(i) { + percpu_stats = per_cpu_ptr(priv->percpu_stats, i); + memset(percpu_stats, 0, sizeof(*percpu_stats)); + + percpu_extras = per_cpu_ptr(priv->percpu_extras, i); + memset(percpu_extras, 0, sizeof(*percpu_extras)); + } + + for (i = 0; i < priv->num_fqs; i++) { + fq = &priv->fq[i]; + memset(&fq->stats, 0, sizeof(fq->stats)); + } + + for (i = 0; i < priv->num_channels; i++) { + ch = priv->channel[i]; + memset(&ch->stats, 0, sizeof(ch->stats)); + } + + return count; +} + +static const struct file_operations dpaa2_dbg_reset_ops = { + .open = simple_open, + .write = dpaa2_dbg_reset_write, +}; + +static ssize_t dpaa2_dbg_reset_mc_write(struct file *file, + const char __user *buf, + size_t count, loff_t *offset) +{ + struct dpaa2_eth_priv *priv = file->private_data; + int err; + + err = dpni_reset_statistics(priv->mc_io, 0, priv->mc_token); + if (err) + netdev_err(priv->net_dev, + "dpni_reset_statistics() failed %d\n", err); + + return count; +} + +static const struct file_operations dpaa2_dbg_reset_mc_ops = { + .open = simple_open, + .write = dpaa2_dbg_reset_mc_write, +}; + void dpaa2_dbg_add(struct dpaa2_eth_priv *priv) { struct dentry *dir; @@ -186,6 +242,14 @@ void dpaa2_dbg_add(struct dpaa2_eth_priv *priv) /* per-fq stats file */ debugfs_create_file("ch_stats", 0444, dir, priv, &dpaa2_dbg_ch_ops); + + /* reset stats */ + debugfs_create_file("reset_stats", 0200, dir, priv, + &dpaa2_dbg_reset_ops); + + /* reset MC stats */ + debugfs_create_file("reset_mc_stats", 0200, dir, priv, + &dpaa2_dbg_reset_mc_ops); } void dpaa2_dbg_remove(struct dpaa2_eth_priv *priv)