From: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Date: Wed, 6 Jan 2010 12:20:31 +0000 (+0200)
Subject: UBI: mark few variables as __initdata
X-Git-Tag: v2.6.34-rc1~28^2~4
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=9e0c7ef3f6c95357ce359a4f9223f0dfcd21cef7;p=thirdparty%2Fkernel%2Fstable.git

UBI: mark few variables as __initdata

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 <Artem.Bityutskiy@nokia.com>
---

diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index 14cec04c34f90..eb8f19f87c682 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 '/<sysfs>/class/ubi/') */
 struct class *ubi_class;