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Date:	Sat, 19 Jul 2014 17:07:41 +0530
From:	Himangi Saraogi <>
To:	"James E.J. Bottomley" <>,
	Helge Deller <>,,
Cc:	Julia Lawall <>
Subject: [PATCH] parisc: Eliminate memset after alloc_bootmem_pages

alloc_bootmem and related function always return zeroed region of
memory. Thus a memset after calls to these functions is unnecessary.

The following Coccinelle semantic patch was used for making the change:

expression E,E1;

E = \(alloc_bootmem\|alloc_bootmem_low\|alloc_bootmem_pages\|alloc_bootmem_low_pages\)(...)
... when != E
- memset(E,0,E1);

Signed-off-by: Himangi Saraogi <>
Acked-by: Julia Lawall <>
 arch/parisc/mm/init.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c
index ae085ad..0bef864 100644
--- a/arch/parisc/mm/init.c
+++ b/arch/parisc/mm/init.c
@@ -728,7 +728,6 @@ static void __init pagetable_init(void)
 	empty_zero_page = alloc_bootmem_pages(PAGE_SIZE);
-	memset(empty_zero_page, 0, PAGE_SIZE);
 static void __init gateway_init(void)

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