diff options
Diffstat (limited to 'src/basic/cgroup-util.c')
| -rw-r--r-- | src/basic/cgroup-util.c | 35 |
1 files changed, 19 insertions, 16 deletions
diff --git a/src/basic/cgroup-util.c b/src/basic/cgroup-util.c index 8d60ded5fe..3222428649 100644 --- a/src/basic/cgroup-util.c +++ b/src/basic/cgroup-util.c @@ -2410,33 +2410,37 @@ bool cg_is_unified_wanted(void) { bool b; const bool is_default = DEFAULT_HIERARCHY == CGROUP_UNIFIED_ALL; - /* If the hierarchy is already mounted, then follow whatever - * was chosen for it. */ - if (cg_unified_flush() >= 0) - return cg_all_unified(); - /* If we have a cached value, return that. */ if (wanted >= 0) return wanted; + /* If the hierarchy is already mounted, then follow whatever + * was chosen for it. */ + if (cg_unified_flush() >= 0) + return (wanted = cg_all_unified()); + /* Otherwise, let's see what the kernel command line has to say. * Since checking is expensive, cache a non-error result. */ r = proc_cmdline_get_bool("systemd.unified_cgroup_hierarchy", &b); - if (r < 0) - return is_default; return (wanted = r > 0 ? b : is_default); } bool cg_is_legacy_wanted(void) { + static thread_local int wanted = -1; + + /* If we have a cached value, return that. */ + if (wanted >= 0) + return wanted; + /* Check if we have cgroups2 already mounted. */ if (cg_unified_flush() >= 0 && unified_cache == CGROUP_UNIFIED_ALL) - return false; + return (wanted = false); /* Otherwise, assume that at least partial legacy is wanted, * since cgroups2 should already be mounted at this point. */ - return true; + return (wanted = true); } bool cg_is_hybrid_wanted(void) { @@ -2445,20 +2449,19 @@ bool cg_is_hybrid_wanted(void) { bool b; const bool is_default = DEFAULT_HIERARCHY == CGROUP_UNIFIED_SYSTEMD; - /* If the hierarchy is already mounted, then follow whatever - * was chosen for it. */ - if (cg_unified_flush() >= 0) - return cg_unified(SYSTEMD_CGROUP_CONTROLLER); - /* If we have a cached value, return that. */ if (wanted >= 0) return wanted; + /* If the hierarchy is already mounted, then follow whatever + * was chosen for it. */ + if (cg_unified_flush() >= 0 && + unified_cache == CGROUP_UNIFIED_ALL) + return (wanted = false); + /* Otherwise, let's see what the kernel command line has to say. * Since checking is expensive, cache a non-error result. */ r = proc_cmdline_get_bool("systemd.legacy_systemd_cgroup_controller", &b); - if (r < 0) - return is_default; /* The meaning of the kernel option is reversed wrt. to the return value * of this function, hence the negation. */ |