From: Yi Wang <wang.yi59@zte.com.cn>
To: tglx@linutronix.de
Cc: mingo@redhat.com, bp@alien8.de, hpa@zytor.com, x86@kernel.org,
akpm@linux-foundation.org, rppt@linux.vnet.ibm.com,
mhocko@suse.com, pavel.tatashin@microsoft.com, joe@perches.com,
jschoenh@amazon.de, m.mizuma@jp.fujitsu.com,
n-horiguchi@ah.jp.nec.com, linux-kernel@vger.kernel.org,
xue.zhihong@zte.com.cn, wang.yi59@zte.com.cn,
"huang.zijiang" <huang.zijiang@zte.com.cn>
Subject: [PATCH] x86:kernel:e820c:kmemdup instead of duplicating its function
Date: Tue, 8 Jan 2019 13:42:17 +0800 [thread overview]
Message-ID: <1546926137-32136-1-git-send-email-wang.yi59@zte.com.cn> (raw)
From: "huang.zijiang" <huang.zijiang@zte.com.cn>
kmemdup has implemented the function that kmalloc() and memcpy().
Signed-off-by: huang.zijiang <huang.zijiang@zte.com.cn>
---
arch/x86/kernel/e820.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 50895c2..a687d10 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -671,21 +671,18 @@ __init void e820__reallocate_tables(void)
int size;
size = offsetof(struct e820_table, entries) + sizeof(struct e820_entry)*e820_table->nr_entries;
- n = kmalloc(size, GFP_KERNEL);
+ n = kmemdup(e820_table, size, GFP_KERNEL);
BUG_ON(!n);
- memcpy(n, e820_table, size);
e820_table = n;
size = offsetof(struct e820_table, entries) + sizeof(struct e820_entry)*e820_table_kexec->nr_entries;
- n = kmalloc(size, GFP_KERNEL);
+ n = kmemdup(e820_table_kexec, size, GFP_KERNEL);
BUG_ON(!n);
- memcpy(n, e820_table_kexec, size);
e820_table_kexec = n;
size = offsetof(struct e820_table, entries) + sizeof(struct e820_entry)*e820_table_firmware->nr_entries;
- n = kmalloc(size, GFP_KERNEL);
+ n = kmemdup(e820_table_firmware, size, GFP_KERNEL);
BUG_ON(!n);
- memcpy(n, e820_table_firmware, size);
e820_table_firmware = n;
}
--
1.8.3.1
next reply other threads:[~2019-01-08 5:42 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-08 5:42 Yi Wang [this message]
2019-01-08 13:30 ` Borislav Petkov
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