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authorHimangi Saraogi <himangi774@gmail.com>2014-07-19 17:05:13 +0530
committerGeert Uytterhoeven <geert@linux-m68k.org>2014-11-10 09:56:44 +0100
commitf0b99a643e9613beb28af43333bbfa90d4bf85cc (patch)
tree304d57b146ae69886137a2cf3727699343e479b3 /arch/m68k/mm
parentbcf8eb09b564096d47f9740ac16057e5f7c8d0f1 (diff)
downloadop-kernel-dev-f0b99a643e9613beb28af43333bbfa90d4bf85cc.zip
op-kernel-dev-f0b99a643e9613beb28af43333bbfa90d4bf85cc.tar.gz
m68k/mm: Eliminate memset after alloc_bootmem_pages
alloc_bootmem and related functions always return a 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> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Diffstat (limited to 'arch/m68k/mm')
-rw-r--r--arch/m68k/mm/init.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/m68k/mm/init.c b/arch/m68k/mm/init.c
index acaff6a..b09a3cb 100644
--- a/arch/m68k/mm/init.c
+++ b/arch/m68k/mm/init.c
@@ -94,7 +94,6 @@ void __init paging_init(void)
high_memory = (void *) end_mem;
empty_zero_page = alloc_bootmem_pages(PAGE_SIZE);
- memset(empty_zero_page, 0, PAGE_SIZE);
/*
* Set up SFC/DFC registers (user data space).
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