From fb78922ce9c71b24c4af1ffc9c3d60c57ac471fb Mon Sep 17 00:00:00 2001 From: Balbir Singh Date: Tue, 4 Mar 2008 14:28:24 -0800 Subject: Memory Resource Controller use strstrip while parsing arguments The memory controller has a requirement that while writing values, we need to use echo -n. This patch fixes the problem and makes the UI more consistent. Signed-off-by: Balbir Singh Cc: Paul Menage Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/controllers/memory.txt | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'Documentation/controllers/memory.txt') diff --git a/Documentation/controllers/memory.txt b/Documentation/controllers/memory.txt index 6015347b41e2..fba6af45225c 100644 --- a/Documentation/controllers/memory.txt +++ b/Documentation/controllers/memory.txt @@ -164,7 +164,7 @@ c. Enable CONFIG_CGROUP_MEM_CONT Since now we're in the 0 cgroup, We can alter the memory limit: -# echo -n 4M > /cgroups/0/memory.limit_in_bytes +# echo 4M > /cgroups/0/memory.limit_in_bytes NOTE: We can use a suffix (k, K, m, M, g or G) to indicate values in kilo, mega or gigabytes. @@ -185,7 +185,7 @@ number of factors, such as rounding up to page boundaries or the total availability of memory on the system. The user is required to re-read this file after a write to guarantee the value committed by the kernel. -# echo -n 1 > memory.limit_in_bytes +# echo 1 > memory.limit_in_bytes # cat memory.limit_in_bytes 4096 @@ -197,7 +197,7 @@ caches, RSS and Active pages/Inactive pages are shown. The memory.force_empty gives an interface to drop *all* charges by force. -# echo -n 1 > memory.force_empty +# echo 1 > memory.force_empty will drop all charges in cgroup. Currently, this is maintained for test. -- cgit v1.2.3 From 00f0b8259e48979c37212995d798f3fbd0374690 Mon Sep 17 00:00:00 2001 From: Balbir Singh Date: Tue, 4 Mar 2008 14:28:39 -0800 Subject: 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: Balbir Singh Cc: Paul Menage Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/controllers/memory.txt | 8 ++++++-- include/linux/cgroup_subsys.h | 2 +- include/linux/memcontrol.h | 4 ++-- include/linux/mm_types.h | 4 ++-- init/Kconfig | 30 +++++++++++++++--------------- mm/Makefile | 2 +- mm/oom_kill.c | 2 +- mm/vmscan.c | 4 ++-- 8 files changed, 30 insertions(+), 26 deletions(-) (limited to 'Documentation/controllers/memory.txt') diff --git a/Documentation/controllers/memory.txt b/Documentation/controllers/memory.txt index fba6af45225c..866b9cd9a959 100644 --- a/Documentation/controllers/memory.txt +++ b/Documentation/controllers/memory.txt @@ -1,4 +1,8 @@ -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 diff --git a/include/linux/cgroup_subsys.h b/include/linux/cgroup_subsys.h index ac6aad98b607..1ddebfc52565 100644 --- a/include/linux/cgroup_subsys.h +++ b/include/linux/cgroup_subsys.h @@ -37,7 +37,7 @@ SUBSYS(cpuacct) /* */ -#ifdef CONFIG_CGROUP_MEM_CONT +#ifdef CONFIG_CGROUP_MEM_RES_CTLR SUBSYS(mem_cgroup) #endif diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 04075628cb9a..a8be8073b9e6 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -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) { diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 34023c65d466..af190ceab971 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -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 }; diff --git a/init/Kconfig b/init/Kconfig index f698a5af5007..442850b984be 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -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//cpuset file" depends on CPUSETS diff --git a/mm/Makefile b/mm/Makefile index 9f117bab5322..a5b0dd93427a 100644 --- a/mm/Makefile +++ b/mm/Makefile @@ -32,5 +32,5 @@ obj-$(CONFIG_FS_XIP) += filemap_xip.o obj-$(CONFIG_MIGRATION) += migrate.o obj-$(CONFIG_SMP) += allocpercpu.o obj-$(CONFIG_QUICKLIST) += quicklist.o -obj-$(CONFIG_CGROUP_MEM_CONT) += memcontrol.o +obj-$(CONFIG_CGROUP_MEM_RES_CTLR) += memcontrol.o diff --git a/mm/oom_kill.c b/mm/oom_kill.c index 4194b9db0104..44b2da11bf43 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -412,7 +412,7 @@ static int oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order, return oom_kill_task(p); } -#ifdef CONFIG_CGROUP_MEM_CONT +#ifdef CONFIG_CGROUP_MEM_RES_CTLR void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask) { unsigned long points = 0; diff --git a/mm/vmscan.c b/mm/vmscan.c index a26dabd62fed..106ba10e1ac6 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -126,7 +126,7 @@ long vm_total_pages; /* The total number of pages which the VM controls */ static LIST_HEAD(shrinker_list); static DECLARE_RWSEM(shrinker_rwsem); -#ifdef CONFIG_CGROUP_MEM_CONT +#ifdef CONFIG_CGROUP_MEM_RES_CTLR #define scan_global_lru(sc) (!(sc)->mem_cgroup) #else #define scan_global_lru(sc) (1) @@ -1427,7 +1427,7 @@ unsigned long try_to_free_pages(struct zone **zones, int order, gfp_t gfp_mask) return do_try_to_free_pages(zones, gfp_mask, &sc); } -#ifdef CONFIG_CGROUP_MEM_CONT +#ifdef CONFIG_CGROUP_MEM_RES_CTLR unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *mem_cont, gfp_t gfp_mask) -- cgit v1.2.3