From 42954857190b9df16d9d873ecc7f6cc38e013e44 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= Date: Tue, 9 Jul 2019 20:32:28 +0200 Subject: brcm2708: add linux 4.19 support MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Boot tested on Raspberry Pi B+ (BCM2708) and Raspberry Pi 2 (BCM2709) Signed-off-by: Álvaro Fernández Rojas --- ...6-cgroup-Disable-cgroup-memory-by-default.patch | 70 ++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 target/linux/brcm2708/patches-4.19/950-0106-cgroup-Disable-cgroup-memory-by-default.patch (limited to 'target/linux/brcm2708/patches-4.19/950-0106-cgroup-Disable-cgroup-memory-by-default.patch') diff --git a/target/linux/brcm2708/patches-4.19/950-0106-cgroup-Disable-cgroup-memory-by-default.patch b/target/linux/brcm2708/patches-4.19/950-0106-cgroup-Disable-cgroup-memory-by-default.patch new file mode 100644 index 0000000000..6bb72a24f8 --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0106-cgroup-Disable-cgroup-memory-by-default.patch @@ -0,0 +1,70 @@ +From db9b15f3d930b045998c276c68f32645f7bade9f Mon Sep 17 00:00:00 2001 +From: Phil Elwell +Date: Mon, 27 Nov 2017 17:14:54 +0000 +Subject: [PATCH 106/703] 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 +--- + kernel/cgroup/cgroup.c | 30 ++++++++++++++++++++++++++++++ + 1 file changed, 30 insertions(+) + +--- a/kernel/cgroup/cgroup.c ++++ b/kernel/cgroup/cgroup.c +@@ -5296,6 +5296,8 @@ 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 +@@ -5336,6 +5338,12 @@ 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 = +@@ -5719,6 +5727,28 @@ static int __init cgroup_disable(char *s + } + __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 -- cgit v1.2.3