diff options
| author | Lennart Poettering <lennart@poettering.net> | 2015-09-01 17:25:59 +0200 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2015-09-01 17:44:17 +0200 |
| commit | e9db43d5910717a1084924c512bf85e2b8265375 (patch) | |
| tree | 6435db76781a17d47340d509ed2cbe2d44dcf0fc /src/core/cgroup.h | |
| parent | 957c3cf97cd0063a3b78aa068d5351ae3b1b0c0c (diff) | |
units: enable waiting for unit termination in certain cases
The legacy cgroup hierarchy does not support reliable empty
notifications in containers and if there are left-over subgroups in a
cgroup. This makes it hard to correctly wait for them running empty, and
thus we previously disabled this logic entirely.
With this change we explicitly check for the container case, and whether
the unit is a "delegation" unit (i.e. one where programs may create
their own subgroups). If we are neither in a container, nor operating on
a delegation unit cgroup empty notifications become reliable and thus we
start waiting for the empty notifications again.
This doesn't really fix the general problem around cgroup notifications
but reduces the effect around it.
(This also reorders #include lines by their focus, as suggsted in
CODING_STYLE. We have to add "virt.h", so let's do that at the right
place.)
Also see #317.
Diffstat (limited to 'src/core/cgroup.h')
| -rw-r--r-- | src/core/cgroup.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/core/cgroup.h b/src/core/cgroup.h index 869ddae8c4..7b38d210fb 100644 --- a/src/core/cgroup.h +++ b/src/core/cgroup.h @@ -130,5 +130,7 @@ int unit_get_memory_current(Unit *u, uint64_t *ret); int unit_get_cpu_usage(Unit *u, nsec_t *ret); int unit_reset_cpu_usage(Unit *u); +bool unit_cgroup_delegate(Unit *u); + const char* cgroup_device_policy_to_string(CGroupDevicePolicy i) _const_; CGroupDevicePolicy cgroup_device_policy_from_string(const char *s) _pure_; |