io_callback      2912 src/libsystemd/sd-bus/sd-bus.c static int io_callback(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
io_callback      1374 src/libsystemd/sd-resolve/sd-resolve.c static int io_callback(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
io_callback       767 src/libsystemd/sd-rtnl/sd-rtnl.c static int io_callback(sd_event_source *s, int fd, uint32_t revents, void *userdata) {