diff options
| -rw-r--r-- | mm/memcontrol.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 5f3ad9c37be..904e9a9c223 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -29,6 +29,7 @@ #include <linux/swap.h> #include <linux/spinlock.h> #include <linux/fs.h> +#include <linux/seq_file.h> #include <asm/uaccess.h> @@ -794,6 +795,49 @@ static ssize_t mem_force_empty_read(struct cgroup *cont, } +static const struct mem_cgroup_stat_desc { + const char *msg; + u64 unit; +} mem_cgroup_stat_desc[] = { + [MEM_CGROUP_STAT_CACHE] = { "cache", PAGE_SIZE, }, + [MEM_CGROUP_STAT_RSS] = { "rss", PAGE_SIZE, }, +}; + +static int mem_control_stat_show(struct seq_file *m, void *arg) +{ + struct cgroup *cont = m->private; + struct mem_cgroup *mem_cont = mem_cgroup_from_cont(cont); + struct mem_cgroup_stat *stat = &mem_cont->stat; + int i; + + for (i = 0; i < ARRAY_SIZE(stat->cpustat[0].count); i++) { + s64 val; + + val = mem_cgroup_read_stat(stat, i); + val *= mem_cgroup_stat_desc[i].unit; + seq_printf(m, "%s %lld\n", mem_cgroup_stat_desc[i].msg, + (long long)val); + } + return 0; +} + +static const struct file_operations mem_control_stat_file_operations = { + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int mem_control_stat_open(struct inode *unused, struct file *file) +{ + /* XXX __d_cont */ + struct cgroup *cont = file->f_dentry->d_parent->d_fsdata; + + file->f_op = &mem_control_stat_file_operations; + return single_open(file, mem_control_stat_show, cont); +} + + + static struct cftype mem_cgroup_files[] = { { .name = "usage_in_bytes", @@ -821,6 +865,10 @@ static struct cftype mem_cgroup_files[] = { .write = mem_force_empty_write, .read = mem_force_empty_read, }, + { + .name = "stat", + .open = mem_control_stat_open, + }, }; static struct mem_cgroup init_mem_cgroup; |