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CGroup API files: use cgroup map for memcontrol stats file 

Remove the seq_file boilerplate used to construct the memcontrol stats map,
and instead use the new map representation for cgroup control files

Signed-off-by: Paul Menage <menage@google.com>
Cc: "Li Zefan" <lizf@cn.fujitsu.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Paul Jackson <pj@sgi.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: "YAMAMOTO Takashi" <yamamoto@valinux.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Paul Menage 2008-04-29 01:00:02 -07:00 committed by Linus Torvalds
parent 9179656961
commit c64745cf0f
1 changed files with 6 additions and 22 deletions
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28
mm/memcontrol.c
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@ -899,9 +899,9 @@ static const struct mem_cgroup_stat_desc {
[MEM_CGROUP_STAT_RSS] = { "rss", PAGE_SIZE, },
};
static int mem_control_stat_show(struct seq_file *m, void *arg)
static int mem_control_stat_show(struct cgroup *cont, struct cftype *cft,
struct cgroup_map_cb *cb)
{
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;
@ -911,8 +911,7 @@ static int mem_control_stat_show(struct seq_file *m, void *arg)
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);
cb->fill(cb, mem_cgroup_stat_desc[i].msg, val);
}
/* showing # of active pages */
{
@ -922,27 +921,12 @@ static int mem_control_stat_show(struct seq_file *m, void *arg)
MEM_CGROUP_ZSTAT_INACTIVE);
active = mem_cgroup_get_all_zonestat(mem_cont,
MEM_CGROUP_ZSTAT_ACTIVE);
seq_printf(m, "active %ld\n", (active) * PAGE_SIZE);
seq_printf(m, "inactive %ld\n", (inactive) * PAGE_SIZE);
cb->fill(cb, "active", (active) * PAGE_SIZE);
cb->fill(cb, "inactive", (inactive) * PAGE_SIZE);
}
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",
@ -967,7 +951,7 @@ static struct cftype mem_cgroup_files[] = {
},
{
.name = "stat",
.open = mem_control_stat_open,
.read_map = mem_control_stat_show,
},
};