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| author | Jens Axboe <axboe@kernel.dk> | 2019-11-06 11:34:18 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-11-06 15:15:38 -0700 |
| commit | 570d79ab6485cb94aad931553d95bab7f8d19d11 (patch) | |
| tree | 3df6ffcc58ccd7bcaa2993d8f31f07ff730005d6 /src | |
| parent | ba97eaf8f9ef2030d581be10df9d875dbfadc91d (diff) | |
| download | liburing-cqring-nodrop.tar.gz liburing-cqring-nodrop.tar.bz2 | |
Add test case for IORING_SETUP_CQ_NODROPcqring-nodrop
Tests overflows without CQ_NODROP, and correct behavior on a ring
setup with CQ_NODROP. The latter backlogs events that otherwise
would have been dropped, and returns -EBUSY to an application trying
to submit new IO with a backlog pending.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'src')
| -rw-r--r-- | src/include/liburing/io_uring.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/include/liburing/io_uring.h b/src/include/liburing/io_uring.h index 6877cf8..7ae91dc 100644 --- a/src/include/liburing/io_uring.h +++ b/src/include/liburing/io_uring.h @@ -56,6 +56,7 @@ struct io_uring_sqe { #define IORING_SETUP_SQPOLL (1U << 1) /* SQ poll thread */ #define IORING_SETUP_SQ_AFF (1U << 2) /* sq_thread_cpu is valid */ #define IORING_SETUP_CQSIZE (1U << 3) /* app defines CQ size */ +#define IORING_SETUP_CQ_NODROP (1U << 4) /* no CQ drops */ #define IORING_OP_NOP 0 #define IORING_OP_READV 1 |