* [PATCH] parisc: Eliminate memset after alloc_bootmem_pages
@ 2014-07-19 11:37 Himangi Saraogi
0 siblings, 0 replies; only message in thread
From: Himangi Saraogi @ 2014-07-19 11:37 UTC (permalink / raw)
To: James E.J. Bottomley, Helge Deller, linux-parisc, linux-kernel
Cc: Julia Lawall
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 <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
---
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)
#endif
empty_zero_page = alloc_bootmem_pages(PAGE_SIZE);
- memset(empty_zero_page, 0, PAGE_SIZE);
}
static void __init gateway_init(void)
--
1.9.1
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