mirror of
https://github.com/Ysurac/openmptcprouter.git
synced 2025-02-15 04:42:02 +00:00
75 lines
1.9 KiB
Diff
75 lines
1.9 KiB
Diff
From 09513957908d52d3422623bf111a895092c0b968 Mon Sep 17 00:00:00 2001
|
|
From: Phil Elwell <phil@raspberrypi.org>
|
|
Date: Mon, 27 Nov 2017 17:14:54 +0000
|
|
Subject: [PATCH 152/277] cgroup: Disable cgroup "memory" by default
|
|
|
|
Some Raspberry Pis have limited RAM and most users won't use the
|
|
cgroup memory support so it is disabled by default. Enable with:
|
|
|
|
cgroup_enable=memory
|
|
|
|
See: https://github.com/raspberrypi/linux/issues/1950
|
|
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
|
|
---
|
|
kernel/cgroup/cgroup.c | 30 ++++++++++++++++++++++++++++++
|
|
1 file changed, 30 insertions(+)
|
|
|
|
diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
|
|
index 030e4286f14c..c9b7a0cd1e30 100644
|
|
--- a/kernel/cgroup/cgroup.c
|
|
+++ b/kernel/cgroup/cgroup.c
|
|
@@ -5137,6 +5137,8 @@ int __init cgroup_init_early(void)
|
|
}
|
|
|
|
static u16 cgroup_disable_mask __initdata;
|
|
+static u16 cgroup_enable_mask __initdata;
|
|
+static int __init cgroup_disable(char *str);
|
|
|
|
/**
|
|
* cgroup_init - cgroup initialization
|
|
@@ -5175,6 +5177,12 @@ int __init cgroup_init(void)
|
|
|
|
mutex_unlock(&cgroup_mutex);
|
|
|
|
+ /* Apply an implicit disable... */
|
|
+ cgroup_disable("memory");
|
|
+
|
|
+ /* ...knowing that an explicit enable will override it. */
|
|
+ cgroup_disable_mask &= ~cgroup_enable_mask;
|
|
+
|
|
for_each_subsys(ss, ssid) {
|
|
if (ss->early_init) {
|
|
struct cgroup_subsys_state *css =
|
|
@@ -5555,6 +5563,28 @@ static int __init cgroup_disable(char *str)
|
|
}
|
|
__setup("cgroup_disable=", cgroup_disable);
|
|
|
|
+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_enable_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
|
|
--
|
|
2.16.1
|
|
|