From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from szxga06-in.huawei.com ([45.249.212.32]:45616 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726604AbeLTCqe (ORCPT ); Wed, 19 Dec 2018 21:46:34 -0500 From: YueHaibing Subject: [PATCH net-next] 6lowpan: fix debugfs_simple_attr.cocci warnings Date: Thu, 20 Dec 2018 02:53:53 +0000 Message-ID: <1545274433-146957-1-git-send-email-yuehaibing@huawei.com> Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit MIME-Version: 1.0 Sender: linux-wpan-owner@vger.kernel.org List-ID: To: Alexander Aring , Jukka Rissanen Cc: YueHaibing , linux-bluetooth@vger.kernel.org, linux-wpan@vger.kernel.org, kernel-janitors@vger.kernel.org Use DEFINE_DEBUGFS_ATTRIBUTE rather than DEFINE_SIMPLE_ATTRIBUTE for debugfs files. Semantic patch information: Rationale: DEFINE_SIMPLE_ATTRIBUTE + debugfs_create_file() imposes some significant overhead as compared to DEFINE_DEBUGFS_ATTRIBUTE + debugfs_create_file_unsafe(). Generated by: scripts/coccinelle/api/debugfs/debugfs_simple_attr.cocci Signed-off-by: YueHaibing --- net/6lowpan/debugfs.c | 42 +++++++++++++++++++++--------------------- 1 file changed, 21 insertions(+), 21 deletions(-) diff --git a/net/6lowpan/debugfs.c b/net/6lowpan/debugfs.c index 6c152f9..536aae5 100644 --- a/net/6lowpan/debugfs.c +++ b/net/6lowpan/debugfs.c @@ -41,9 +41,9 @@ static int lowpan_ctx_flag_active_get(void *data, u64 *val) return 0; } -DEFINE_SIMPLE_ATTRIBUTE(lowpan_ctx_flag_active_fops, - lowpan_ctx_flag_active_get, - lowpan_ctx_flag_active_set, "%llu\n"); +DEFINE_DEBUGFS_ATTRIBUTE(lowpan_ctx_flag_active_fops, + lowpan_ctx_flag_active_get, + lowpan_ctx_flag_active_set, "%llu\n"); static int lowpan_ctx_flag_c_set(void *data, u64 val) { @@ -66,8 +66,8 @@ static int lowpan_ctx_flag_c_get(void *data, u64 *val) return 0; } -DEFINE_SIMPLE_ATTRIBUTE(lowpan_ctx_flag_c_fops, lowpan_ctx_flag_c_get, - lowpan_ctx_flag_c_set, "%llu\n"); +DEFINE_DEBUGFS_ATTRIBUTE(lowpan_ctx_flag_c_fops, lowpan_ctx_flag_c_get, + lowpan_ctx_flag_c_set, "%llu\n"); static int lowpan_ctx_plen_set(void *data, u64 val) { @@ -97,8 +97,8 @@ static int lowpan_ctx_plen_get(void *data, u64 *val) return 0; } -DEFINE_SIMPLE_ATTRIBUTE(lowpan_ctx_plen_fops, lowpan_ctx_plen_get, - lowpan_ctx_plen_set, "%llu\n"); +DEFINE_DEBUGFS_ATTRIBUTE(lowpan_ctx_plen_fops, lowpan_ctx_plen_get, + lowpan_ctx_plen_set, "%llu\n"); static int lowpan_ctx_pfx_show(struct seq_file *file, void *offset) { @@ -184,15 +184,15 @@ static int lowpan_dev_debugfs_ctx_init(struct net_device *dev, if (!root) return -EINVAL; - dentry = debugfs_create_file("active", 0644, root, - &ldev->ctx.table[id], - &lowpan_ctx_flag_active_fops); + dentry = debugfs_create_file_unsafe("active", 0644, root, + &ldev->ctx.table[id], + &lowpan_ctx_flag_active_fops); if (!dentry) return -EINVAL; - dentry = debugfs_create_file("compression", 0644, root, - &ldev->ctx.table[id], - &lowpan_ctx_flag_c_fops); + dentry = debugfs_create_file_unsafe("compression", 0644, root, + &ldev->ctx.table[id], + &lowpan_ctx_flag_c_fops); if (!dentry) return -EINVAL; @@ -202,9 +202,9 @@ static int lowpan_dev_debugfs_ctx_init(struct net_device *dev, if (!dentry) return -EINVAL; - dentry = debugfs_create_file("prefix_len", 0644, root, - &ldev->ctx.table[id], - &lowpan_ctx_plen_fops); + dentry = debugfs_create_file_unsafe("prefix_len", 0644, root, + &ldev->ctx.table[id], + &lowpan_ctx_plen_fops); if (!dentry) return -EINVAL; @@ -245,8 +245,8 @@ static int lowpan_short_addr_get(void *data, u64 *val) return 0; } -DEFINE_SIMPLE_ATTRIBUTE(lowpan_short_addr_fops, lowpan_short_addr_get, - NULL, "0x%04llx\n"); +DEFINE_DEBUGFS_ATTRIBUTE(lowpan_short_addr_fops, lowpan_short_addr_get, NULL, + "0x%04llx\n"); static int lowpan_dev_debugfs_802154_init(const struct net_device *dev, struct lowpan_dev *ldev) @@ -260,9 +260,9 @@ static int lowpan_dev_debugfs_802154_init(const struct net_device *dev, if (!root) return -EINVAL; - dentry = debugfs_create_file("short_addr", 0444, root, - lowpan_802154_dev(dev)->wdev->ieee802154_ptr, - &lowpan_short_addr_fops); + dentry = debugfs_create_file_unsafe("short_addr", 0444, root, + lowpan_802154_dev(dev)->wdev->ieee802154_ptr, + &lowpan_short_addr_fops); if (!dentry) return -EINVAL;