diff --git a/src/oom/oomd-util.c b/src/oom/oomd-util.c index 5bf81479c9..0550ac6c74 100644 --- a/src/oom/oomd-util.c +++ b/src/oom/oomd-util.c @@ -333,7 +333,11 @@ int oomd_cgroup_context_acquire(const char *path, OomdCGroupContext **ret) { return log_debug_errno(r, "Error getting memory.low from %s: %m", path); r = cg_get_attribute_as_uint64(SYSTEMD_CGROUP_CONTROLLER, path, "memory.swap.current", &ctx->swap_usage); - if (r < 0) + if (r == -ENODATA) + /* The kernel can be compiled without support for memory.swap.* files, + * or it can be disabled with boot param 'swapaccount=0' */ + log_once(LOG_WARNING, "No kernel support for memory.swap.current from %s (try boot param swapaccount=1), ignoring.", path); + else if (r < 0) return log_debug_errno(r, "Error getting memory.swap.current from %s: %m", path); r = cg_get_keyed_attribute(SYSTEMD_CGROUP_CONTROLLER, path, "memory.stat", STRV_MAKE("pgscan"), &val);