Commit 00f0b825 authored by Balbir Singh's avatar Balbir Singh Committed by Linus Torvalds
Browse files

Memory controller: rename to Memory Resource Controller 



Rename Memory Controller to Memory Resource Controller.  Reflect the same
changes in the CONFIG definition for the Memory Resource Controller.  Group
together the config options for Resource Counters and Memory Resource
Controller.

Signed-off-by: default avatarBalbir Singh <balbir@linux.vnet.ibm.com>
Cc: Paul Menage <menage@google.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 804defea

Documentation/controllers/memory.txt

+6 −2
Original line number Diff line number Diff line 
Memory Controller

Memory Resource Controller



NOTE: The Memory Resource Controller has been generically been referred

to as the memory controller in this document. Do not confuse memory controller

used here with the memory controller that is used in hardware.



Salient features
@@ -152,7 +156,7 @@ The memory controller uses the following hierarchy 


a. Enable CONFIG_CGROUPS

b. Enable CONFIG_RESOURCE_COUNTERS

c. Enable CONFIG_CGROUP_MEM_CONT

c. Enable CONFIG_CGROUP_MEM_RES_CTLR



1. Prepare the cgroups

# mkdir -p /cgroups

include/linux/cgroup_subsys.h

+1 −1
Original line number Diff line number Diff line
@@ -37,7 +37,7 @@ SUBSYS(cpuacct) 


/* */



#ifdef CONFIG_CGROUP_MEM_CONT

#ifdef CONFIG_CGROUP_MEM_RES_CTLR

SUBSYS(mem_cgroup)

#endif

include/linux/memcontrol.h

+2 −2
Original line number Diff line number Diff line
@@ -25,7 +25,7 @@ struct page_cgroup; 
struct page;

struct mm_struct;



#ifdef CONFIG_CGROUP_MEM_CONT

#ifdef CONFIG_CGROUP_MEM_RES_CTLR



extern void mm_init_cgroup(struct mm_struct *mm, struct task_struct *p);

extern void mm_free_cgroup(struct mm_struct *mm);
@@ -72,7 +72,7 @@ extern long mem_cgroup_calc_reclaim_active(struct mem_cgroup *mem, 
extern long mem_cgroup_calc_reclaim_inactive(struct mem_cgroup *mem,

				struct zone *zone, int priority);



#else /* CONFIG_CGROUP_MEM_CONT */

#else /* CONFIG_CGROUP_MEM_RES_CTLR */

static inline void mm_init_cgroup(struct mm_struct *mm,

					struct task_struct *p)

{

include/linux/mm_types.h

+2 −2
Original line number Diff line number Diff line
@@ -88,7 +88,7 @@ struct page { 
	void *virtual;			/* Kernel virtual address (NULL if

					   not kmapped, ie. highmem) */

#endif /* WANT_PAGE_VIRTUAL */

#ifdef CONFIG_CGROUP_MEM_CONT

#ifdef CONFIG_CGROUP_MEM_RES_CTLR

	unsigned long page_cgroup;

#endif

};
@@ -222,7 +222,7 @@ struct mm_struct { 
	/* aio bits */

	rwlock_t		ioctx_list_lock;

	struct kioctx		*ioctx_list;

#ifdef CONFIG_CGROUP_MEM_CONT

#ifdef CONFIG_CGROUP_MEM_RES_CTLR

	struct mem_cgroup *mem_cgroup;

#endif

};

init/Kconfig

+15 −15
Original line number Diff line number Diff line
@@ -366,6 +366,21 @@ config RESOURCE_COUNTERS 
          infrastructure that works with cgroups

	depends on CGROUPS



config CGROUP_MEM_RES_CTLR

	bool "Memory Resource Controller for Control Groups"

	depends on CGROUPS && RESOURCE_COUNTERS

	help

	  Provides a memory resource controller that manages both page cache and

	  RSS memory.



	  Note that setting this option increases fixed memory overhead

	  associated with each page of memory in the system by 4/8 bytes

	  and also increases cache misses because struct page on many 64bit

	  systems will not fit into a single cache line anymore.



	  Only enable when you're ok with these trade offs and really

	  sure you need the memory resource controller.



config SYSFS_DEPRECATED

	bool "Create deprecated sysfs files"

	depends on SYSFS
@@ -387,21 +402,6 @@ config SYSFS_DEPRECATED 
	  If you are using a distro that was released in 2006 or later,

	  it should be safe to say N here.



config CGROUP_MEM_CONT

	bool "Memory controller for cgroups"

	depends on CGROUPS && RESOURCE_COUNTERS

	help

	  Provides a memory controller that manages both page cache and

	  RSS memory.



	  Note that setting this option increases fixed memory overhead

	  associated with each page of memory in the system by 4/8 bytes

	  and also increases cache misses because struct page on many 64bit

	  systems will not fit into a single cache line anymore.



	  Only enable when you're ok with these trade offs and really

	  sure you need the memory controller.



config PROC_PID_CPUSET

	bool "Include legacy /proc/<pid>/cpuset file"

	depends on CPUSETS

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