From c50fe09c78e9b87137e0188139c774bd4f12dcb2 Mon Sep 17 00:00:00 2001 From: popcornmix <popcornmix@gmail.com> Date: Wed, 18 Dec 2013 22:16:19 +0000 Subject: [PATCH] config: Enable CONFIG_MEMCG, but leave it disabled (due to memory cost). Enable with cgroup_enable=memory. --- kernel/cgroup.c | 24 +++++++++++++++++++++++- 1 file changed, 23 insertions(+), 1 deletion(-) --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -5632,7 +5632,7 @@ int __init cgroup_init_early(void) return 0; } -static u16 cgroup_disable_mask __initdata; +static u16 cgroup_disable_mask __initdata = 1<<0; /** * cgroup_init - cgroup initialization @@ -6173,6 +6173,28 @@ static int __init cgroup_no_v1(char *str } __setup("cgroup_no_v1=", cgroup_no_v1); +static int __init cgroup_enable(char *str) +{ + struct cgroup_subsys *ss; + char *token; + int i; + + while ((token = strsep(&str, ",")) != NULL) { + if (!*token) + continue; + + for_each_subsys(ss, i) { + if (strcmp(token, ss->name) && + strcmp(token, ss->legacy_name)) + continue; + + cgroup_disable_mask &= ~(1 << i); + } + } + return 1; +} +__setup("cgroup_enable=", cgroup_enable); + /** * css_tryget_online_from_dir - get corresponding css from a cgroup dentry * @dentry: directory dentry of interest