linux-kernel - [PATCH -next] x86/xen: Convert to DEFINE_SHOW

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Message-ID: <20200716090641.14184-1-miaoqinglang@huawei.com>
Date:   Thu, 16 Jul 2020 17:06:41 +0800
From:   Qinglang Miao <miaoqinglang@...wei.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Juergen Gross <jgross@...e.com>, Chen-Yu Tsai <wens@...e.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Stefano Stabellini <sstabellini@...nel.org>
CC:     <xen-devel@...ts.xenproject.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH -next] x86/xen: Convert to DEFINE_SHOW_ATTRIBUTE

From: Chen Huang <chenhuang5@...wei.com>

Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.

Signed-off-by: Chen Huang <chenhuang5@...wei.com>
---
 arch/x86/xen/p2m.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c
index 4cf680e2e..0f4a449de 100644
--- a/arch/x86/xen/p2m.c
+++ b/arch/x86/xen/p2m.c
@@ -799,17 +799,7 @@ static int p2m_dump_show(struct seq_file *m, void *v)
 	return 0;
 }
 
-static int p2m_dump_open(struct inode *inode, struct file *filp)
-{
-	return single_open(filp, p2m_dump_show, NULL);
-}
-
-static const struct file_operations p2m_dump_fops = {
-	.open		= p2m_dump_open,
-	.read_iter		= seq_read_iter,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(p2m_dump);
 
 static struct dentry *d_mmu_debug;
 
-- 
2.17.1