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authorPaul Menage <menage@google.com>2008-04-29 01:00:02 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-29 08:06:08 -0700
commitc64745cf0f34f2cb08fc28c93d844e583d0d591d (patch)
treed957cd0cd83917ee69c72eb92d1db0c4cb2ed2bc /mm
parent9179656961adcea3c25403365597e486d851ac5e (diff)
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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>
Diffstat (limited to 'mm')
-rw-r--r--mm/memcontrol.c28
1 files changed, 6 insertions, 22 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index e227d7c..496ab70 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -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,
},
};