Setup the memory container and add basic hooks and controls to integrate and work with the container. Signed-off-by: Balbir Singh <balbir@xxxxxxxxxxxxxxxxxx> --- include/linux/container_subsys.h | 6 + include/linux/memcontrol.h | 19 +++++ init/Kconfig | 8 ++ mm/Makefile | 1 mm/memcontrol.c | 141 +++++++++++++++++++++++++++++++++++++++ 5 files changed, 175 insertions(+) diff -puN include/linux/container_subsys.h~mem-control-setup include/linux/container_subsys.h --- linux-2.6.22-rc6/include/linux/container_subsys.h~mem-control-setup 2007-07-05 13:45:17.000000000 -0700 +++ linux-2.6.22-rc6-balbir/include/linux/container_subsys.h 2007-07-05 13:45:17.000000000 -0700 @@ -30,3 +30,9 @@ SUBSYS(ns) #endif /* */ + +#ifdef CONFIG_CONTAINER_MEM_CONT +SUBSYS(mem_container) +#endif + +/* */ diff -puN init/Kconfig~mem-control-setup init/Kconfig --- linux-2.6.22-rc6/init/Kconfig~mem-control-setup 2007-07-05 13:45:17.000000000 -0700 +++ linux-2.6.22-rc6-balbir/init/Kconfig 2007-07-05 13:45:17.000000000 -0700 @@ -360,6 +360,14 @@ config CONTAINER_NS for instance virtual servers and checkpoint/restart jobs. +config CONTAINER_MEM_CONT + bool "Memory controller for containers" + select CONTAINERS + select RESOURCE_COUNTERS + help + Provides a memory controller that manages both page cache and + RSS memory. + config PROC_PID_CPUSET bool "Include legacy /proc/<pid>/cpuset file" depends on CPUSETS diff -puN mm/Makefile~mem-control-setup mm/Makefile --- linux-2.6.22-rc6/mm/Makefile~mem-control-setup 2007-07-05 13:45:17.000000000 -0700 +++ linux-2.6.22-rc6-balbir/mm/Makefile 2007-07-05 13:45:17.000000000 -0700 @@ -30,4 +30,5 @@ obj-$(CONFIG_FS_XIP) += filemap_xip.o obj-$(CONFIG_MIGRATION) += migrate.o obj-$(CONFIG_SMP) += allocpercpu.o obj-$(CONFIG_QUICKLIST) += quicklist.o +obj-$(CONFIG_CONTAINER_MEM_CONT) += memcontrol.o diff -puN /dev/null mm/memcontrol.c --- /dev/null 2007-06-01 08:12:04.000000000 -0700 +++ linux-2.6.22-rc6-balbir/mm/memcontrol.c 2007-07-05 13:45:17.000000000 -0700 @@ -0,0 +1,141 @@ +/* memcontrol.c - Memory Controller + * + * Copyright IBM Corporation, 2007 + * Author Balbir Singh <balbir@xxxxxxxxxxxxxxxxxx> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2.1 of the GNU Lesser General Public License + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + */ + +#include <linux/res_counter.h> +#include <linux/memcontrol.h> +#include <linux/container.h> + +struct container_subsys mem_container_subsys; + +/* + * The memory controller data structure. The memory controller controls both + * page cache and RSS per container. We would eventually like to provide + * statistics based on the statistics developed by Rik Van Riel for clock-pro, + * to help the administrator determine what knobs to tune. + * + * TODO: Add a water mark for the memory controller. Reclaim will begin when + * we hit the water mark. + */ +struct mem_container { + struct container_subsys_state css; + /* + * the counter to account for memory usage + */ + struct res_counter res; +}; + +/* + * A meta page is associated with every page descriptor. The meta page + * helps us identify information about the container + */ +struct meta_page { + struct list_head list; /* per container LRU list */ + struct page *page; + struct mem_container *mem_container; +}; + + +static inline struct mem_container *mem_container_from_cont(struct container + *cnt) +{ + return container_of(container_subsys_state(cnt, + mem_container_subsys_id), struct mem_container, + css); +} + +static ssize_t mem_container_read(struct container *cont, struct cftype *cft, + struct file *file, char __user *userbuf, size_t nbytes, + loff_t *ppos) +{ + return res_counter_read(&mem_container_from_cont(cont)->res, + cft->private, userbuf, nbytes, ppos); +} + +static ssize_t mem_container_write(struct container *cont, struct cftype *cft, + struct file *file, const char __user *userbuf, + size_t nbytes, loff_t *ppos) +{ + return res_counter_write(&mem_container_from_cont(cont)->res, + cft->private, userbuf, nbytes, ppos); +} + +static struct cftype mem_container_usage = { + .name = "mem_usage", + .private = RES_USAGE, + .read = mem_container_read, +}; + +static struct cftype mem_container_limit = { + .name = "mem_limit", + .private = RES_LIMIT, + .write = mem_container_write, + .read = mem_container_read, +}; + +static struct cftype mem_container_failcnt = { + .name = "mem_failcnt", + .private = RES_FAILCNT, + .read = mem_container_read, +}; + +static int mem_container_create(struct container_subsys *ss, + struct container *cont) +{ + struct mem_container *mem; + + mem = kzalloc(sizeof(struct mem_container), GFP_KERNEL); + if (!mem) + return -ENOMEM; + + res_counter_init(&mem->res); + cont->subsys[mem_container_subsys_id] = &mem->css; + mem->css.container = cont; + return 0; +} + +static void mem_container_destroy(struct container_subsys *ss, + struct container *cont) +{ + kfree(mem_container_from_cont(cont)); +} + +static int mem_container_populate(struct container_subsys *ss, + struct container *cont) +{ + int rc = 0; + + rc = container_add_file(cont, &mem_container_usage); + if (rc < 0) + goto err; + + rc = container_add_file(cont, &mem_container_limit); + if (rc < 0) + goto err; + + rc = container_add_file(cont, &mem_container_failcnt); + if (rc < 0) + goto err; + +err: + return rc; +} + +struct container_subsys mem_container_subsys = { + .name = "mem_container", + .subsys_id = mem_container_subsys_id, + .create = mem_container_create, + .destroy = mem_container_destroy, + .populate = mem_container_populate, + .early_init = 0, +}; diff -puN /dev/null include/linux/memcontrol.h --- /dev/null 2007-06-01 08:12:04.000000000 -0700 +++ linux-2.6.22-rc6-balbir/include/linux/memcontrol.h 2007-07-05 13:45:17.000000000 -0700 @@ -0,0 +1,19 @@ +/* memcontrol.h - Memory Controller + * + * Copyright IBM Corporation, 2007 + * Author Balbir Singh <balbir@xxxxxxxxxxxxxxxxxx> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2.1 of the GNU Lesser General Public License + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + */ + +#ifndef _LINUX_MEMCONTROL_H +#define _LINUX_MEMCONTROL_H + +#endif /* _LINUX_MEMCONTROL_H */ + _ -- Warm Regards, Balbir Singh Linux Technology Center IBM, ISTL _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers