78 lines
2.1 KiB
Diff
78 lines
2.1 KiB
Diff
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From 6f2dc468edc31cf2c9b2098566cbbcc1e59b5ad5 Mon Sep 17 00:00:00 2001
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From: popcornmix <popcornmix@gmail.com>
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Date: Wed, 18 Dec 2013 22:16:19 +0000
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Subject: [PATCH 27/54] config: Enable CONFIG_MEMCG, but leave it disabled (due
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to memory cost). Enable with cgroup_enable=memory.
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---
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arch/arm/configs/bcmrpi_defconfig | 1 +
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kernel/cgroup.c | 27 +++++++++++++++++++++++++++
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mm/memcontrol.c | 1 +
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3 files changed, 29 insertions(+)
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diff --git a/arch/arm/configs/bcmrpi_defconfig b/arch/arm/configs/bcmrpi_defconfig
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index 78d789c..e89e430 100644
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--- a/arch/arm/configs/bcmrpi_defconfig
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+++ b/arch/arm/configs/bcmrpi_defconfig
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@@ -18,6 +18,7 @@ CONFIG_CGROUP_FREEZER=y
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CONFIG_CGROUP_DEVICE=y
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CONFIG_CGROUP_CPUACCT=y
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CONFIG_RESOURCE_COUNTERS=y
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+CONFIG_MEMCG=y
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CONFIG_BLK_CGROUP=y
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CONFIG_NAMESPACES=y
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CONFIG_SCHED_AUTOGROUP=y
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diff --git a/kernel/cgroup.c b/kernel/cgroup.c
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index 0c753dd..a18b46e 100644
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--- a/kernel/cgroup.c
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+++ b/kernel/cgroup.c
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@@ -5252,6 +5252,33 @@ static int __init cgroup_disable(char *str)
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}
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__setup("cgroup_disable=", cgroup_disable);
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+static int __init cgroup_enable(char *str)
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+{
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+ struct cgroup_subsys *ss;
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+ char *token;
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+ int i;
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+
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+ while ((token = strsep(&str, ",")) != NULL) {
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+ if (!*token)
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+ continue;
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+
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+ /*
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+ * cgroup_disable, being at boot time, can't know about
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+ * module subsystems, so we don't worry about them.
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+ */
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+ for_each_builtin_subsys(ss, i) {
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+ if (!strcmp(token, ss->name)) {
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+ ss->disabled = 0;
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+ printk(KERN_INFO "Disabling %s control group"
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+ " subsystem\n", ss->name);
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+ break;
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+ }
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+ }
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+ }
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+ return 1;
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+}
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+__setup("cgroup_enable=", cgroup_enable);
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+
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/**
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* css_from_dir - get corresponding css from the dentry of a cgroup dir
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* @dentry: directory dentry of interest
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diff --git a/mm/memcontrol.c b/mm/memcontrol.c
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index 9b35da2..a9891cc 100644
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--- a/mm/memcontrol.c
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+++ b/mm/memcontrol.c
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@@ -7289,6 +7289,7 @@ struct cgroup_subsys mem_cgroup_subsys = {
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.bind = mem_cgroup_bind,
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.base_cftypes = mem_cgroup_files,
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.early_init = 0,
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+ .disabled = 1,
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};
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#ifdef CONFIG_MEMCG_SWAP
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--
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1.9.1
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