From: Dan Magenheimer <dan.magenheimer@oracle.com>
Date: Tue, 30 Apr 2013 22:27:03 +0000 (-0700)
Subject: staging: zcache: enable ramster to be built/loaded as a module
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~88^2~94
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1ac37bee81531cb62a9a64e78ffdad7da9b20ea2;p=pandora-kernel.git

staging: zcache: enable ramster to be built/loaded as a module

Enable module support for ramster.  Note runtime dependency disallows
loading if cleancache/frontswap lazy initialization patches are not
present.

If built-in (not built as a module), the original mechanism of enabling
via a kernel boot parameter is retained, but this should be considered
deprecated.

Note that module unload is explicitly not yet supported.

[v1: Fixed compile issues since ramster_init now has four arguments]
[v2: Fixed rebase on ramster->zcache move]
[akpm@linux-foundation.org: use_frontswap_selfshrink cannot be __initdata]
Signed-off-by: Dan Magenheimer <dan.magenheimer@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Bob Liu <lliubbo@gmail.com>
Cc: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Cc: Andor Daam <andor.daam@googlemail.com>
Cc: Florian Schmaus <fschmaus@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Stefan Hengelein <ilendir@googlemail.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/drivers/staging/zcache/ramster.h b/drivers/staging/zcache/ramster.h
index 1b71aea2ff62..e1f91d5a0f6a 100644
--- a/drivers/staging/zcache/ramster.h
+++ b/drivers/staging/zcache/ramster.h
@@ -11,10 +11,14 @@
 #ifndef _ZCACHE_RAMSTER_H_
 #define _ZCACHE_RAMSTER_H_
 
+#ifdef CONFIG_RAMSTER_MODULE
+#define CONFIG_RAMSTER
+#endif
+
 #ifdef CONFIG_RAMSTER
 #include "ramster/ramster.h"
 #else
-static inline void ramster_init(bool x, bool y, bool z)
+static inline void ramster_init(bool x, bool y, bool z, bool w)
 {
 }
 
diff --git a/drivers/staging/zcache/ramster/debug.c b/drivers/staging/zcache/ramster/debug.c
index bf34133cc631..327e4f0d98e1 100644
--- a/drivers/staging/zcache/ramster/debug.c
+++ b/drivers/staging/zcache/ramster/debug.c
@@ -43,7 +43,7 @@ static struct debug_entry {
 };
 #undef ATTR
 
-int __init ramster_debugfs_init(void)
+int ramster_debugfs_init(void)
 {
 	int i;
 	struct dentry *root = debugfs_create_dir("ramster", NULL);
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