redisgate Gent io_uring io_uring_0205

IO_URING Probing supported capabilities

지원되는 기능 탐색(확인)

다음 프로그램은 io_uring_get_probe()를 사용하는 방법을 보여줍니다.   작업(기능)이 지원되는지 여부를 인쇄합니다.

지원되는 작업과 지원되지 않는 작업에 대한 세부 정보를 인쇄하는 프로그램 #include <stdio.h> #include <stdlib.h> #include <sys/utsname.h> #include <liburing.h> #include <liburing/io_uring.h> static const char *op_strs[] = { "IORING_OP_NOP", "IORING_OP_READV", "IORING_OP_WRITEV", "IORING_OP_FSYNC", "IORING_OP_READ_FIXED", "IORING_OP_WRITE_FIXED", "IORING_OP_POLL_ADD", "IORING_OP_POLL_REMOVE", "IORING_OP_SYNC_FILE_RANGE", "IORING_OP_SENDMSG", "IORING_OP_RECVMSG", "IORING_OP_TIMEOUT", "IORING_OP_TIMEOUT_REMOVE", "IORING_OP_ACCEPT", "IORING_OP_ASYNC_CANCEL", "IORING_OP_LINK_TIMEOUT", "IORING_OP_CONNECT", "IORING_OP_FALLOCATE", "IORING_OP_OPENAT", "IORING_OP_CLOSE", "IORING_OP_FILES_UPDATE", "IORING_OP_STATX", "IORING_OP_READ", "IORING_OP_WRITE", "IORING_OP_FADVISE", "IORING_OP_MADVISE", "IORING_OP_SEND", "IORING_OP_RECV", "IORING_OP_OPENAT2", "IORING_OP_EPOLL_CTL", "IORING_OP_SPLICE", "IORING_OP_PROVIDE_BUFFERS", "IORING_OP_REMOVE_BUFFERS", }; int main() { struct utsname u; uname(&u); printf("You are running kernel version: %s\n", u.release); struct io_uring_probe *probe = io_uring_get_probe(); printf("Report of your kernel's list of supported io_uring operations:\n"); for (char i = 0; i < IORING_OP_LAST; i++ ) { printf("%s: ", op_strs[i]); if(io_uring_opcode_supported(probe, i)) printf("yes.\n"); else printf("no.\n"); } free(probe); return 0; }

다음은 Linux 커널 5.6.4에서 실행된 위 프로그램의 출력입니다.
You are running kernel version: 5.6.4-arch1-1 Report of your kernel's list of supported io_uring operations: IORING_OP_NOP: yes. IORING_OP_READV: yes. IORING_OP_WRITEV: yes. IORING_OP_FSYNC: yes. IORING_OP_READ_FIXED: yes. IORING_OP_WRITE_FIXED: yes. IORING_OP_POLL_ADD: yes. IORING_OP_POLL_REMOVE: yes. IORING_OP_SYNC_FILE_RANGE: yes. IORING_OP_SENDMSG: yes. IORING_OP_RECVMSG: yes. IORING_OP_TIMEOUT: yes. IORING_OP_TIMEOUT_REMOVE: yes. IORING_OP_ACCEPT: yes. IORING_OP_ASYNC_CANCEL: yes. IORING_OP_LINK_TIMEOUT: yes. IORING_OP_CONNECT: yes. IORING_OP_FALLOCATE: yes. IORING_OP_OPENAT: yes. IORING_OP_CLOSE: yes. IORING_OP_FILES_UPDATE: yes. IORING_OP_STATX: yes. IORING_OP_READ: yes. IORING_OP_WRITE: yes. IORING_OP_FADVISE: yes. IORING_OP_MADVISE: yes. IORING_OP_SEND: yes. IORING_OP_RECV: yes. IORING_OP_OPENAT2: yes. IORING_OP_EPOLL_CTL: yes. IORING_OP_SPLICE: no. IORING_OP_PROVIDE_BUFFERS: no. IORING_OP_REMOVE_BUFFERS: no.