From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.nokia.com ([192.100.122.230] helo=mgw-mx03.nokia.com) by bombadil.infradead.org with esmtps (Exim 4.69 #1 (Red Hat Linux)) id 1Na9gZ-0004AV-Es for linux-mtd@lists.infradead.org; Wed, 27 Jan 2010 15:20:08 +0000 Received: from esebh105.NOE.Nokia.com (esebh105.ntc.nokia.com [172.21.138.211]) by mgw-mx03.nokia.com (Switch-3.3.3/Switch-3.3.3) with ESMTP id o0RFJovn004074 for ; Wed, 27 Jan 2010 17:19:58 +0200 From: Artem Bityutskiy To: linux-mtd@lists.infradead.org Subject: [PATCH 1/5] UBI: mark few variables as __initdata Date: Wed, 27 Jan 2010 17:18:56 +0200 Message-Id: <1264605540-13144-2-git-send-email-dedekind1@gmail.com> In-Reply-To: <1264605540-13144-1-git-send-email-dedekind1@gmail.com> References: <1264605540-13144-1-git-send-email-dedekind1@gmail.com> Cc: Artem Bityutskiy List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Artem Bityutskiy The @mtd_devs and @mtd_dev_param variables are used only during the initialization, and all functions that use the variables have the __init prefix. This means we can safely mark the variables as __initdata, which is a tiny optimization. Impact: tiny RAM consumption optimization when UBI is used as a kernel module. Signed-off-by: Artem Bityutskiy --- drivers/mtd/ubi/build.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c index 14cec04..eb8f19f 100644 --- a/drivers/mtd/ubi/build.c +++ b/drivers/mtd/ubi/build.c @@ -59,10 +59,10 @@ struct mtd_dev_param { }; /* Numbers of elements set in the @mtd_dev_param array */ -static int mtd_devs; +static int __initdata mtd_devs; /* MTD devices specification parameters */ -static struct mtd_dev_param mtd_dev_param[UBI_MAX_DEVICES]; +static struct mtd_dev_param __initdata mtd_dev_param[UBI_MAX_DEVICES]; /* Root UBI "class" object (corresponds to '//class/ubi/') */ struct class *ubi_class; -- 1.6.6