shaba/systemd-stable
1
1
Fork 0
mirror of https://github.com/systemd/systemd-stable.git synced 2025-01-18 06:03:42 +03:00
Code

core: ensure init.scope is realized after drop-ins have been loaded

Browse Source 
If we add a drop-in for init.scope (e.g.: to set some memory limit),
it will be loaded long after the cgroup has already been realized.
Do it again when creating the special unit.

(cherry picked from commit 020b2e41ea776cff73392da8084a0725b590d245)
(cherry picked from commit 786b7a7208cfb585b70659a8e3ac5180e85d0647)
This commit is contained in:
Luca Boccassi 2023-01-20 23:00:38 +00:00 committed by Luca Boccassi
parent ba3029cfb4
commit ffa329c45c
5 changed files with 15 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/core/cgroup.c
View File

@ -2459,7 +2459,7 @@ static bool unit_has_mask_enables_realized(
((u->cgroup_enabled_mask | enable_mask) & CGROUP_MASK_V2) == (u->cgroup_enabled_mask & CGROUP_MASK_V2);
}
static void unit_add_to_cgroup_realize_queue(Unit *u) {
void unit_add_to_cgroup_realize_queue(Unit *u) {
assert(u);
if (u->in_cgroup_realize_queue)

1
src/core/cgroup.h
View File

@ -262,6 +262,7 @@ int unit_realize_cgroup(Unit *u);
void unit_prune_cgroup(Unit *u);
int unit_watch_cgroup(Unit *u);
int unit_watch_cgroup_memory(Unit *u);
void unit_add_to_cgroup_realize_queue(Unit *u);
void unit_release_cgroup(Unit *u);
/* Releases the cgroup only if it is recursively empty.

4
src/core/scope.c
View File

@ -653,6 +653,10 @@ static void scope_enumerate_perpetual(Manager *m) {
unit_add_to_load_queue(u);
unit_add_to_dbus_queue(u);
/* Enqueue an explicit cgroup realization here. Unlike other cgroups this one already exists and is
* populated (by us, after all!) already, even when we are not in a reload cycle. Hence we cannot
* apply the settings at creation time anymore, but let's at least apply them asynchronously. */
unit_add_to_cgroup_realize_queue(u);
}
static const char* const scope_result_table[_SCOPE_RESULT_MAX] = {

6
test/TEST-55-OOMD/test.sh
View File

@ -16,6 +16,12 @@ test_append_files() {
cat >>"${initdir:?}/etc/fstab" <<EOF
UUID=$(blkid -o value -s UUID "${LOOPDEV}p2") none swap defaults 0 0
EOF
mkdir -p "${initdir:?}/etc/systemd/system/init.scope.d/"
cat >>"${initdir:?}/etc/systemd/system/init.scope.d/test-55-oomd.conf" <<EOF
[Scope]
MemoryHigh=10G
EOF
)
}

3
test/units/testsuite-55.sh
View File

@ -6,6 +6,9 @@ set -o pipefail
systemd-analyze log-level debug
systemd-analyze log-target console
# Ensure that the init.scope.d drop-in is applied on boot
test "$(cat /sys/fs/cgroup/init.scope/memory.high)" != "max"
# Loose checks to ensure the environment has the necessary features for systemd-oomd
[[ -e /proc/pressure ]] || echo "no PSI" >>/skipped
cgroup_type="$(stat -fc %T /sys/fs/cgroup/)"