diff options
| author | Lennart Poettering <lennart@poettering.net> | 2011-11-03 19:42:53 +0100 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2011-11-03 19:42:53 +0100 |
| commit | 353fa6a21aab96b0b82ab40cc22b08b1fb0bf652 (patch) | |
| tree | b71298767f207b22e797675d9053c8aff2b02852 /src | |
| parent | 263653e10353d8ad155f1faba01981816a2bb712 (diff) | |
cgroup: immediately remove all cgroups which run empty
Some controllers have scaling problems when many empty cgroups exist.
Hence, as soon as we get a notification that a cgroup is empty, delete
it. This is also nice to keep the systemd-cgls output short.
Diffstat (limited to 'src')
| -rw-r--r-- | src/cgroup.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/src/cgroup.c b/src/cgroup.c index be837c3d0f..4bbb54fd7e 100644 --- a/src/cgroup.c +++ b/src/cgroup.c @@ -363,7 +363,8 @@ int cgroup_notify_empty(Manager *m, const char *group) { assert(m); assert(group); - if (!(l = hashmap_get(m->cgroup_bondings, group))) + l = hashmap_get(m->cgroup_bondings, group); + if (!l) return 0; LIST_FOREACH(by_path, b, l) { @@ -372,7 +373,8 @@ int cgroup_notify_empty(Manager *m, const char *group) { if (!b->unit) continue; - if ((t = cgroup_bonding_is_empty_list(b)) < 0) { + t = cgroup_bonding_is_empty_list(b); + if (t < 0) { /* If we don't know, we don't know */ if (t != -EAGAIN) @@ -381,9 +383,13 @@ int cgroup_notify_empty(Manager *m, const char *group) { continue; } - if (t > 0) + if (t > 0) { + /* If it is empty, let's delete it */ + cgroup_bonding_trim_list(b->unit->meta.cgroup_bondings, true); + if (UNIT_VTABLE(b->unit)->cgroup_notify_empty) UNIT_VTABLE(b->unit)->cgroup_notify_empty(b->unit); + } } return 0; |