syscall           190 event/modules/ngx_epoll_module.c     return syscall(SYS_io_setup, nr_reqs, ctx);
syscall           197 event/modules/ngx_epoll_module.c     return syscall(SYS_io_destroy, ctx);
syscall           205 event/modules/ngx_epoll_module.c     return syscall(SYS_io_getevents, ctx, min_nr, nr, events, tmo);
syscall           232 event/modules/ngx_epoll_module.c         ngx_eventfd = syscall(SYS_eventfd, 0);
syscall            22 os/unix/ngx_linux_aio_read.c     return syscall(SYS_io_submit, ctx, n, paiocb);