sd_journal_seek_realtime_usec 1935 src/journal/journalctl.c                 r = sd_journal_seek_realtime_usec(j, arg_since);
sd_journal_seek_realtime_usec 1943 src/journal/journalctl.c                 r = sd_journal_seek_realtime_usec(j, arg_until);
sd_journal_seek_realtime_usec  116 src/systemd/sd-journal.h int sd_journal_seek_realtime_usec(sd_journal *j, uint64_t usec);