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Memory controller: accounting setup 

Basic setup routines, the mm_struct has a pointer to the cgroup that
it belongs to and the the page has a page_cgroup associated with it.

Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Signed-off-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: Paul Menage <menage@google.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Kirill Korotaev <dev@sw.ru>
Cc: Herbert Poetzl <herbert@13thfloor.at>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Pavel Emelianov 2008-02-07 00:13:51 -08:00 committed by Linus Torvalds
parent 8cdea7c054
commit 78fb74669e
5 changed files with 104 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
include/linux/memcontrol.h
View File

@ -3,6 +3,9 @@
* Copyright IBM Corporation, 2007
* Author Balbir Singh <balbir@linux.vnet.ibm.com>
*
* Copyright 2007 OpenVZ SWsoft Inc
* Author: Pavel Emelianov <xemul@openvz.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
@ -17,5 +20,38 @@
#ifndef _LINUX_MEMCONTROL_H
#define _LINUX_MEMCONTROL_H
struct mem_cgroup;
struct page_cgroup;
#ifdef CONFIG_CGROUP_MEM_CONT
extern void mm_init_cgroup(struct mm_struct *mm, struct task_struct *p);
extern void mm_free_cgroup(struct mm_struct *mm);
extern void page_assign_page_cgroup(struct page *page,
struct page_cgroup *pc);
extern struct page_cgroup *page_get_page_cgroup(struct page *page);
#else /* CONFIG_CGROUP_MEM_CONT */
static inline void mm_init_cgroup(struct mm_struct *mm,
struct task_struct *p)
{
}
static inline void mm_free_cgroup(struct mm_struct *mm)
{
}
static inline void page_assign_page_cgroup(struct page *page,
struct page_cgroup *pc)
{
}
static inline struct page_cgroup *page_get_page_cgroup(struct page *page)
{
return NULL;
}
#endif /* CONFIG_CGROUP_MEM_CONT */
#endif /* _LINUX_MEMCONTROL_H */

6
include/linux/mm_types.h
View File

@ -88,6 +88,9 @@ struct page {
void *virtual; /* Kernel virtual address (NULL if
not kmapped, ie. highmem) */
#endif /* WANT_PAGE_VIRTUAL */
#ifdef CONFIG_CGROUP_MEM_CONT
unsigned long page_cgroup;
#endif
};
/*
@ -219,6 +222,9 @@ struct mm_struct {
/* aio bits */
rwlock_t ioctx_list_lock;
struct kioctx *ioctx_list;
#ifdef CONFIG_CGROUP_MEM_CONT
struct mem_cgroup *mem_cgroup;
#endif
};
#endif /* _LINUX_MM_TYPES_H */

1
include/linux/sched.h
View File

@ -92,6 +92,7 @@ struct sched_param {
#include <asm/processor.h>
struct mem_cgroup;
struct exec_domain;
struct futex_pi_state;
struct robust_list_head;

11
kernel/fork.c
View File

@ -40,6 +40,7 @@
#include <linux/ptrace.h>
#include <linux/mount.h>
#include <linux/audit.h>
#include <linux/memcontrol.h>
#include <linux/profile.h>
#include <linux/rmap.h>
#include <linux/acct.h>
@ -340,7 +341,7 @@ __cacheline_aligned_in_smp DEFINE_SPINLOCK(mmlist_lock);
#include <linux/init_task.h>
static struct mm_struct * mm_init(struct mm_struct * mm)
static struct mm_struct * mm_init(struct mm_struct * mm, struct task_struct *p)
{
atomic_set(&mm->mm_users, 1);
atomic_set(&mm->mm_count, 1);
@ -357,11 +358,14 @@ static struct mm_struct * mm_init(struct mm_struct * mm)
mm->ioctx_list = NULL;
mm->free_area_cache = TASK_UNMAPPED_BASE;
mm->cached_hole_size = ~0UL;
mm_init_cgroup(mm, p);
if (likely(!mm_alloc_pgd(mm))) {
mm->def_flags = 0;
return mm;
}
mm_free_cgroup(mm);
free_mm(mm);
return NULL;
}
@ -376,7 +380,7 @@ struct mm_struct * mm_alloc(void)
mm = allocate_mm();
if (mm) {
memset(mm, 0, sizeof(*mm));
mm = mm_init(mm);
mm = mm_init(mm, current);
}
return mm;
}
@ -390,6 +394,7 @@ void fastcall __mmdrop(struct mm_struct *mm)
{
BUG_ON(mm == &init_mm);
mm_free_pgd(mm);
mm_free_cgroup(mm);
destroy_context(mm);
free_mm(mm);
}
@ -511,7 +516,7 @@ static struct mm_struct *dup_mm(struct task_struct *tsk)
mm->token_priority = 0;
mm->last_interval = 0;
if (!mm_init(mm))
if (!mm_init(mm, tsk))
goto fail_nomem;
if (init_new_context(tsk, mm))

57
mm/memcontrol.c
View File

@ -3,6 +3,9 @@
* Copyright IBM Corporation, 2007
* Author Balbir Singh <balbir@linux.vnet.ibm.com>
*
* Copyright 2007 OpenVZ SWsoft Inc
* Author: Pavel Emelianov <xemul@openvz.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
@ -17,6 +20,7 @@
#include <linux/res_counter.h>
#include <linux/memcontrol.h>
#include <linux/cgroup.h>
#include <linux/mm.h>
struct cgroup_subsys mem_cgroup_subsys;
@ -35,6 +39,13 @@ struct mem_cgroup {
* the counter to account for memory usage
*/
struct res_counter res;
/*
* Per cgroup active and inactive list, similar to the
* per zone LRU lists.
* TODO: Consider making these lists per zone
*/
struct list_head active_list;
struct list_head inactive_list;
};
/*
@ -56,6 +67,37 @@ struct mem_cgroup *mem_cgroup_from_cont(struct cgroup *cont)
css);
}
static inline
struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p)
{
return container_of(task_subsys_state(p, mem_cgroup_subsys_id),
struct mem_cgroup, css);
}
void mm_init_cgroup(struct mm_struct *mm, struct task_struct *p)
{
struct mem_cgroup *mem;
mem = mem_cgroup_from_task(p);
css_get(&mem->css);
mm->mem_cgroup = mem;
}
void mm_free_cgroup(struct mm_struct *mm)
{
css_put(&mm->mem_cgroup->css);
}
void page_assign_page_cgroup(struct page *page, struct page_cgroup *pc)
{
page->page_cgroup = (unsigned long)pc;
}
struct page_cgroup *page_get_page_cgroup(struct page *page)
{
return page->page_cgroup;
}
static ssize_t mem_cgroup_read(struct cgroup *cont, struct cftype *cft,
struct file *file, char __user *userbuf, size_t nbytes,
loff_t *ppos)
@ -91,14 +133,21 @@ static struct cftype mem_cgroup_files[] = {
},
};
static struct mem_cgroup init_mem_cgroup;
static struct cgroup_subsys_state *
mem_cgroup_create(struct cgroup_subsys *ss, struct cgroup *cont)
{
struct mem_cgroup *mem;
mem = kzalloc(sizeof(struct mem_cgroup), GFP_KERNEL);
if (!mem)
return -ENOMEM;
if (unlikely((cont->parent) == NULL)) {
mem = &init_mem_cgroup;
init_mm.mem_cgroup = mem;
} else
mem = kzalloc(sizeof(struct mem_cgroup), GFP_KERNEL);
if (mem == NULL)
return NULL;
res_counter_init(&mem->res);
return &mem->css;
@ -123,5 +172,5 @@ struct cgroup_subsys mem_cgroup_subsys = {
.create = mem_cgroup_create,
.destroy = mem_cgroup_destroy,
.populate = mem_cgroup_populate,
.early_init = 0,
.early_init = 1,
};