diff options
| author | David Wei <davidhwei@meta.com> | 2023-04-18 15:58:18 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-04-18 19:38:36 -0600 |
| commit | ea97f6c8558e83cb457c3b5f53351e4fd8519ab1 (patch) | |
| tree | e294b2a17ce99a18af919302ea590eb91e01c24d /include/uapi/linux/io_uring.h | |
| parent | 2236b3905b4d4e9cd4d149ab35767858c02bb79b (diff) | |
io_uring: add support for multishot timeouts
A multishot timeout submission will repeatedly generate completions with
the IORING_CQE_F_MORE cflag set. Depending on the value of the `off'
field in the submission, these timeouts can either repeat indefinitely
until cancelled (`off' = 0) or for a fixed number of times (`off' > 0).
Only noseq timeouts (i.e. not dependent on the number of I/O
completions) are supported.
An indefinite timer will be cancelled if the CQ ever overflows.
Signed-off-by: David Wei <davidhwei@meta.com>
Link: https://lore.kernel.org/r/20230418225817.1905027-1-davidhwei@meta.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/uapi/linux/io_uring.h')
| -rw-r--r-- | include/uapi/linux/io_uring.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h index f8d14d1c58d3..0716cb17e436 100644 --- a/include/uapi/linux/io_uring.h +++ b/include/uapi/linux/io_uring.h @@ -250,6 +250,7 @@ enum io_uring_op { #define IORING_TIMEOUT_REALTIME (1U << 3) #define IORING_LINK_TIMEOUT_UPDATE (1U << 4) #define IORING_TIMEOUT_ETIME_SUCCESS (1U << 5) +#define IORING_TIMEOUT_MULTISHOT (1U << 6) #define IORING_TIMEOUT_CLOCK_MASK (IORING_TIMEOUT_BOOTTIME | IORING_TIMEOUT_REALTIME) #define IORING_TIMEOUT_UPDATE_MASK (IORING_TIMEOUT_UPDATE | IORING_LINK_TIMEOUT_UPDATE) /* |