diff options
| -rw-r--r-- | include/linux/page_cgroup.h | 5 | ||||
| -rw-r--r-- | init/main.c | 2 | ||||
| -rw-r--r-- | mm/memcontrol.c | 1 | ||||
| -rw-r--r-- | mm/page_cgroup.c | 32 |
4 files changed, 32 insertions, 8 deletions
diff --git a/include/linux/page_cgroup.h b/include/linux/page_cgroup.h index 0fd39f2231e..f546ad6fc02 100644 --- a/include/linux/page_cgroup.h +++ b/include/linux/page_cgroup.h @@ -99,5 +99,10 @@ static inline struct page_cgroup *lookup_page_cgroup(struct page *page) { return NULL; } + +static inline void page_cgroup_init(void) +{ +} + #endif #endif diff --git a/init/main.c b/init/main.c index 3e17a3bafe6..672ae75b205 100644 --- a/init/main.c +++ b/init/main.c @@ -52,6 +52,7 @@ #include <linux/key.h> #include <linux/unwind.h> #include <linux/buffer_head.h> +#include <linux/page_cgroup.h> #include <linux/debug_locks.h> #include <linux/debugobjects.h> #include <linux/lockdep.h> @@ -647,6 +648,7 @@ asmlinkage void __init start_kernel(void) vmalloc_init(); vfs_caches_init_early(); cpuset_init_early(); + page_cgroup_init(); mem_init(); enable_debug_pagealloc(); cpu_hotplug_init(); diff --git a/mm/memcontrol.c b/mm/memcontrol.c index d4a92b63e98..866dcc7eeb0 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1088,7 +1088,6 @@ mem_cgroup_create(struct cgroup_subsys *ss, struct cgroup *cont) int node; if (unlikely((cont->parent) == NULL)) { - page_cgroup_init(); mem = &init_mem_cgroup; } else { mem = mem_cgroup_alloc(); diff --git a/mm/page_cgroup.c b/mm/page_cgroup.c index 78242b4d7ed..f59d797dc5a 100644 --- a/mm/page_cgroup.c +++ b/mm/page_cgroup.c @@ -4,8 +4,10 @@ #include <linux/bit_spinlock.h> #include <linux/page_cgroup.h> #include <linux/hash.h> +#include <linux/slab.h> #include <linux/memory.h> #include <linux/vmalloc.h> +#include <linux/cgroup.h> static void __meminit __init_page_cgroup(struct page_cgroup *pc, unsigned long pfn) @@ -67,6 +69,9 @@ void __init page_cgroup_init(void) int nid, fail; + if (mem_cgroup_subsys.disabled) + return; + for_each_online_node(nid) { fail = alloc_node_page_cgroup(nid); if (fail) @@ -107,9 +112,14 @@ int __meminit init_section_page_cgroup(unsigned long pfn) nid = page_to_nid(pfn_to_page(pfn)); table_size = sizeof(struct page_cgroup) * PAGES_PER_SECTION; - base = kmalloc_node(table_size, GFP_KERNEL, nid); - if (!base) - base = vmalloc_node(table_size, nid); + if (slab_is_available()) { + base = kmalloc_node(table_size, GFP_KERNEL, nid); + if (!base) + base = vmalloc_node(table_size, nid); + } else { + base = __alloc_bootmem_node_nopanic(NODE_DATA(nid), table_size, + PAGE_SIZE, __pa(MAX_DMA_ADDRESS)); + } if (!base) { printk(KERN_ERR "page cgroup allocation failure\n"); @@ -136,11 +146,16 @@ void __free_page_cgroup(unsigned long pfn) if (!ms || !ms->page_cgroup) return; base = ms->page_cgroup + pfn; - ms->page_cgroup = NULL; - if (is_vmalloc_addr(base)) + if (is_vmalloc_addr(base)) { vfree(base); - else - kfree(base); + ms->page_cgroup = NULL; + } else { + struct page *page = virt_to_page(base); + if (!PageReserved(page)) { /* Is bootmem ? */ + kfree(base); + ms->page_cgroup = NULL; + } + } } int online_page_cgroup(unsigned long start_pfn, @@ -214,6 +229,9 @@ void __init page_cgroup_init(void) unsigned long pfn; int fail = 0; + if (mem_cgroup_subsys.disabled) + return; + for (pfn = 0; !fail && pfn < max_pfn; pfn += PAGES_PER_SECTION) { if (!pfn_present(pfn)) continue; |