core: suppress message about missing libbpf if in initrd()

It is quite likely that libbpf is not present in the initrd, and
there isn't much reason to use the bpf filters there.

https://bugzilla.redhat.com/show_bug.cgi?id=2084955#c25

diff --git a/src/core/bpf-util.c b/src/core/bpf-util.c
index 9130aa373f234fbeb946e132411d19e1f1606f62..84170da0a80c34ca48ddf1a54b1a598d11485489 100644 (file)
--- a/src/core/bpf-util.c
+++ b/src/core/bpf-util.c
@@ -26,7 +26,8 @@ bool cgroup_bpf_supported(void) {
 
         r = dlopen_bpf();
         if (r < 0) {
-                log_info_errno(r, "Failed to open libbpf, cgroup BPF features disabled: %m");
+                log_full_errno(in_initrd() ? LOG_DEBUG : LOG_INFO,
+                               r, "Failed to open libbpf, cgroup BPF features disabled: %m");
                 return (supported = false);
         }