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Commit ff7ea79c authored by Nishanth Aravamudan's avatar Nishanth Aravamudan Committed by Linus Torvalds
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mm: create /sys/kernel/mm 



Add a kobject to create /sys/kernel/mm when sysfs is mounted.  The kobject
will exist regardless.  This will allow for the hugepage related sysfs
directories to exist under the mm "subsystem" directory.  Add an ABI file
appropriately.

[kosaki.motohiro@jp.fujitsu.com: fix build]
Signed-off-by: default avatarNishanth Aravamudan <nacc@us.ibm.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: default avatarKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 5e9426ab

Documentation/ABI/testing/sysfs-kernel-mm

0 → 100644
+6 −0
Original line number Diff line number Diff line 
What:		/sys/kernel/mm

Date:		July 2008

Contact:	Nishanth Aravamudan <nacc@us.ibm.com>, VM maintainers

Description:

		/sys/kernel/mm/ should contain any and all VM

		related information in /sys/kernel/.

include/linux/kobject.h

+2 −0
Original line number Diff line number Diff line
@@ -186,6 +186,8 @@ extern struct kobject *kset_find_obj(struct kset *, const char *); 


/* The global /sys/kernel/ kobject for people to chain off of */

extern struct kobject *kernel_kobj;

/* The global /sys/kernel/mm/ kobject for people to chain off of */

extern struct kobject *mm_kobj;

/* The global /sys/hypervisor/ kobject for people to chain off of */

extern struct kobject *hypervisor_kobj;

/* The global /sys/power/ kobject for people to chain off of */

mm/mm_init.c

+16 −0
Original line number Diff line number Diff line
@@ -7,6 +7,8 @@ 
 */

#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/kobject.h>

#include <linux/module.h>

#include "internal.h"



#ifdef CONFIG_DEBUG_MEMORY_INIT
@@ -134,3 +136,17 @@ static __init int set_mminit_loglevel(char *str) 
}

early_param("mminit_loglevel", set_mminit_loglevel);

#endif /* CONFIG_DEBUG_MEMORY_INIT */



struct kobject *mm_kobj;

EXPORT_SYMBOL_GPL(mm_kobj);



static int __init mm_sysfs_init(void)

{

	mm_kobj = kobject_create_and_add("mm", kernel_kobj);

	if (!mm_kobj)

		return -ENOMEM;



	return 0;

}



__initcall(mm_sysfs_init);