X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=mm%2Fmemcontrol.c;h=e46451e1d9b793563b08d8ef015927b484b0be1d;hb=5f4a6fae46a214c4dce3bd63a6219a5f1c818c78;hp=c5285afe2048985f0c61d1a0430522107adf7c38;hpb=4a56d02e34baedbea5eb1fd558f2b856b8c7db1e;p=linux-2.6

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index c5285afe20..e46451e1d9 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -31,6 +31,7 @@
 #include <linux/spinlock.h>
 #include <linux/fs.h>
 #include <linux/seq_file.h>
+#include <linux/vmalloc.h>
 
 #include <asm/uaccess.h>
 
@@ -47,6 +48,8 @@ enum mem_cgroup_stat_index {
 	 */
 	MEM_CGROUP_STAT_CACHE, 	   /* # of pages charged as cache */
 	MEM_CGROUP_STAT_RSS,	   /* # of pages charged as rss */
+	MEM_CGROUP_STAT_PGPGIN_COUNT,	/* # of pages paged in */
+	MEM_CGROUP_STAT_PGPGOUT_COUNT,	/* # of pages paged out */
 
 	MEM_CGROUP_STAT_NSTATS,
 };
@@ -198,6 +201,13 @@ static void mem_cgroup_charge_statistics(struct mem_cgroup *mem, int flags,
 		__mem_cgroup_stat_add_safe(stat, MEM_CGROUP_STAT_CACHE, val);
 	else
 		__mem_cgroup_stat_add_safe(stat, MEM_CGROUP_STAT_RSS, val);
+
+	if (charge)
+		__mem_cgroup_stat_add_safe(stat,
+				MEM_CGROUP_STAT_PGPGIN_COUNT, 1);
+	else
+		__mem_cgroup_stat_add_safe(stat,
+				MEM_CGROUP_STAT_PGPGOUT_COUNT, 1);
 }
 
 static struct mem_cgroup_per_zone *
@@ -883,6 +893,8 @@ static const struct mem_cgroup_stat_desc {
 } mem_cgroup_stat_desc[] = {
 	[MEM_CGROUP_STAT_CACHE] = { "cache", PAGE_SIZE, },
 	[MEM_CGROUP_STAT_RSS] = { "rss", PAGE_SIZE, },
+	[MEM_CGROUP_STAT_PGPGIN_COUNT] = {"pgpgin", 1, },
+	[MEM_CGROUP_STAT_PGPGOUT_COUNT] = {"pgpgout", 1, },
 };
 
 static int mem_control_stat_show(struct cgroup *cont, struct cftype *cft,
@@ -983,6 +995,29 @@ static void free_mem_cgroup_per_zone_info(struct mem_cgroup *mem, int node)
 	kfree(mem->info.nodeinfo[node]);
 }
 
+static struct mem_cgroup *mem_cgroup_alloc(void)
+{
+	struct mem_cgroup *mem;
+
+	if (sizeof(*mem) < PAGE_SIZE)
+		mem = kmalloc(sizeof(*mem), GFP_KERNEL);
+	else
+		mem = vmalloc(sizeof(*mem));
+
+	if (mem)
+		memset(mem, 0, sizeof(*mem));
+	return mem;
+}
+
+static void mem_cgroup_free(struct mem_cgroup *mem)
+{
+	if (sizeof(*mem) < PAGE_SIZE)
+		kfree(mem);
+	else
+		vfree(mem);
+}
+
+
 static struct cgroup_subsys_state *
 mem_cgroup_create(struct cgroup_subsys *ss, struct cgroup *cont)
 {
@@ -993,16 +1028,13 @@ mem_cgroup_create(struct cgroup_subsys *ss, struct cgroup *cont)
 		mem = &init_mem_cgroup;
 		page_cgroup_cache = KMEM_CACHE(page_cgroup, SLAB_PANIC);
 	} else {
-		mem = kzalloc(sizeof(struct mem_cgroup), GFP_KERNEL);
+		mem = mem_cgroup_alloc();
+		if (!mem)
+			return ERR_PTR(-ENOMEM);
 	}
 
-	if (mem == NULL)
-		return ERR_PTR(-ENOMEM);
-
 	res_counter_init(&mem->res);
 
-	memset(&mem->info, 0, sizeof(mem->info));
-
 	for_each_node_state(node, N_POSSIBLE)
 		if (alloc_mem_cgroup_per_zone_info(mem, node))
 			goto free_out;
@@ -1012,7 +1044,7 @@ free_out:
 	for_each_node_state(node, N_POSSIBLE)
 		free_mem_cgroup_per_zone_info(mem, node);
 	if (cont->parent != NULL)
-		kfree(mem);
+		mem_cgroup_free(mem);
 	return ERR_PTR(-ENOMEM);
 }
 
@@ -1032,7 +1064,7 @@ static void mem_cgroup_destroy(struct cgroup_subsys *ss,
 	for_each_node_state(node, N_POSSIBLE)
 		free_mem_cgroup_per_zone_info(mem, node);
 
-	kfree(mem_cgroup_from_cont(cont));
+	mem_cgroup_free(mem_cgroup_from_cont(cont));
 }
 
 static int mem_cgroup_populate(struct cgroup_subsys *ss,