linux-kernel - [PATCH 06/10] mm: make vmstat.c explicitly non-modular

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Date:	Mon, 24 Aug 2015 18:14:38 -0400
From:	Paul Gortmaker <paul.gortmaker@...driver.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	<linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Christoph Lameter <cl@...ux.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Mel Gorman <mgorman@...e.de>, Michal Hocko <mhocko@...e.cz>,
	Davidlohr Bueso <dave@...olabs.net>,
	Minchan Kim <minchan@...nel.org>,
	Joonsoo Kim <iamjoonsoo.kim@....com>
Subject: [PATCH 06/10] mm: make vmstat.c explicitly non-modular

The Makefile currently controlling compilation of this code is obj-y
meaning that it currently is not being built as a module by anyone.

Lets remove the couple traces of modularity so that when reading the
code there is no doubt it is builtin-only.

Since module_init translates to device_initcall in the non-modular
case, the init ordering remains unchanged with this commit. However
one could argue that subsys_initcall might make more sense here.

Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Christoph Lameter <cl@...ux.com>
Cc: Johannes Weiner <hannes@...xchg.org>
Cc: Mel Gorman <mgorman@...e.de>
Cc: Michal Hocko <mhocko@...e.cz>
Cc: Davidlohr Bueso <dave@...olabs.net>
Cc: Minchan Kim <minchan@...nel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@....com>
Cc: linux-mm@...ck.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@...driver.com>
---
 mm/vmstat.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/mm/vmstat.c b/mm/vmstat.c
index 1fd0886a389f..e6cd18cc4d75 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -12,7 +12,7 @@
 #include <linux/fs.h>
 #include <linux/mm.h>
 #include <linux/err.h>
-#include <linux/module.h>
+#include <linux/init.h>
 #include <linux/slab.h>
 #include <linux/cpu.h>
 #include <linux/cpumask.h>
@@ -1536,7 +1536,7 @@ static int __init setup_vmstat(void)
 #endif
 	return 0;
 }
-module_init(setup_vmstat)
+device_initcall(setup_vmstat)
 
 #if defined(CONFIG_DEBUG_FS) && defined(CONFIG_COMPACTION)
 
@@ -1695,6 +1695,5 @@ fail:
 	debugfs_remove_recursive(extfrag_debug_root);
 	return -ENOMEM;
 }
-
-module_init(extfrag_debug_init);
+device_initcall(extfrag_debug_init);
 #endif
-- 
2.5.0

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