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Message-ID: <20140719113513.GA23586@himangi-Dell> Date: Sat, 19 Jul 2014 17:05:13 +0530 From: Himangi Saraogi <himangi774@...il.com> To: Geert Uytterhoeven <geert@...ux-m68k.org>, linux-m68k@...ts.linux-m68k.org, linux-kernel@...r.kernel.org Cc: Julia Lawall <julia.lawall@...6.fr> Subject: [PATCH] mm/m68k: 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@...il.com> Acked-by: Julia Lawall <julia.lawall@...6.fr> --- To send to: Geert Uytterhoeven <geert@...ux-m68k.org>,linux-m68k@...ts.linux-m68k.org,linux-kernel@...r.kernel.org arch/m68k/mm/init.c | 1 - 1 file changed, 1 deletion(-) 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). -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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