kernel: bump 4.14 to 4.14.241

[openwrt/openwrt.git] / target / linux / brcm2708 / patches-4.14 / 950-0136-cgroup-Disable-cgroup-memory-by-default.patch

diff --git a/target/linux/brcm2708/patches-4.14/950-0136-cgroup-Disable-cgroup-memory-by-default.patch b/target/linux/brcm2708/patches-4.14/950-0136-cgroup-Disable-cgroup-memory-by-default.patch
index ec964531cbbb834f1dc9a4b3705fb685d1bde425..758d8f81c28db2d5149186d9fff5a10b158dac63 100644 (file)
--- a/target/linux/brcm2708/patches-4.14/950-0136-cgroup-Disable-cgroup-memory-by-default.patch
+++ b/target/linux/brcm2708/patches-4.14/950-0136-cgroup-Disable-cgroup-memory-by-default.patch
@@ -1,7 +1,7 @@
-From 584bc4a6093ceb9aea07673185ee0084edc8690b Mon Sep 17 00:00:00 2001
+From 66b3e537b50cd2b46b71edb6ffeef633d1224d10 Mon Sep 17 00:00:00 2001
 From: Phil Elwell <phil@raspberrypi.org>
 Date: Mon, 27 Nov 2017 17:14:54 +0000
-Subject: [PATCH 136/454] cgroup: Disable cgroup "memory" by default
+Subject: [PATCH] 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:
@@ -12,34 +12,46 @@ 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(+)
+ kernel/cgroup/cgroup.c | 38 ++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 38 insertions(+)
 
 --- a/kernel/cgroup/cgroup.c
 +++ b/kernel/cgroup/cgroup.c
-@@ -5220,6 +5220,8 @@ int __init cgroup_init_early(void)
+@@ -5219,6 +5219,9 @@ int __init cgroup_init_early(void)
+       return 0;
  }
  
- static u16 cgroup_disable_mask __initdata;
 +static u16 cgroup_enable_mask __initdata;
 +static int __init cgroup_disable(char *str);
- 
++
  /**
   * cgroup_init - cgroup initialization
-@@ -5258,6 +5260,12 @@ int __init cgroup_init(void)
+  *
+@@ -5256,6 +5259,12 @@ int __init cgroup_init(void)
  
        mutex_unlock(&cgroup_mutex);
  
-+      /* Apply an implicit disable... */
++      /*
++       * Apply an implicit disable, knowing that an explicit enable will
++       * prevent if from doing anything.
++       */
 +      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 =
-@@ -5649,6 +5657,28 @@ static int __init cgroup_disable(char *s
+@@ -5637,6 +5646,10 @@ static int __init cgroup_disable(char *s
+                           strcmp(token, ss->legacy_name))
+                               continue;
+ 
++                      /* An explicit cgroup_enable overrides a disable */
++                      if (cgroup_enable_mask & (1 << i))
++                              continue;
++
+                       static_branch_disable(cgroup_subsys_enabled_key[i]);
+                       pr_info("Disabling %s control group subsystem\n",
+                               ss->name);
+@@ -5646,6 +5659,31 @@ static int __init cgroup_disable(char *s
  }
  __setup("cgroup_disable=", cgroup_disable);
  
@@ -59,6 +71,9 @@ Signed-off-by: Phil Elwell <phil@raspberrypi.org>
 +                              continue;
 +
 +                      cgroup_enable_mask |= 1 << i;
++                      static_branch_enable(cgroup_subsys_enabled_key[i]);
++                      pr_info("Enabling %s control group subsystem\n",
++                              ss->name);
 +              }
 +      }
 +      return 1;