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From: YueHaibing <yuehaibing@huawei.com>
To: Alexander Aring <alex.aring@gmail.com>,
	Jukka Rissanen <jukka.rissanen@linux.intel.com>
Cc: YueHaibing <yuehaibing@huawei.com>,
	linux-bluetooth@vger.kernel.org, linux-wpan@vger.kernel.org,
	kernel-janitors@vger.kernel.org
Subject: [PATCH net-next] 6lowpan: fix debugfs_simple_attr.cocci warnings
Date: Thu, 20 Dec 2018 02:53:53 +0000	[thread overview]
Message-ID: <1545274433-146957-1-git-send-email-yuehaibing@huawei.com> (raw)

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 <yuehaibing@huawei.com>
---
 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;
 

             reply	other threads:[~2018-12-20  2:46 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-20  2:53 YueHaibing [this message]
2018-12-24 16:12 ` [PATCH net-next] 6lowpan: fix debugfs_simple_attr.cocci warnings Alexander Aring
2019-01-14 18:52   ` Stefan Schmidt
2019-01-18  9:10 ` Marcel Holtmann

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