From mboxrd@z Thu Jan 1 00:00:00 1970 From: Himangi Saraogi Subject: [PATCH] parisc: Eliminate memset after alloc_bootmem_pages Date: Sat, 19 Jul 2014 17:07:41 +0530 Message-ID: <20140719113741.GA23655@himangi-Dell> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Julia Lawall To: "James E.J. Bottomley" , Helge Deller , linux-parisc@vger.kernel.org, linux-kernel@vger.kernel.org Return-path: List-ID: List-Id: linux-parisc.vger.kernel.org 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) #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