diff options
| author |   Jens Axboe <axboe@kernel.dk> | 2021-08-27 17:11:06 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-08-29 07:57:23 -0600 |
| commit | 50c1df2b56e0f581b1dbf334dbf807d6fb8f77b2 (patch) | |
| tree | 66e2f1d3944cd9635942741a559d2c0deb049c69 /include/uapi/linux/io_uring.h | |
| parent | io-wq: provide a way to limit max number of workers (diff) | |
| download | linux-dev-50c1df2b56e0f581b1dbf334dbf807d6fb8f77b2.tar.xz linux-dev-50c1df2b56e0f581b1dbf334dbf807d6fb8f77b2.zip | |
io_uring: support CLOCK_BOOTTIME/REALTIME for timeouts
Certain use cases want to use CLOCK_BOOTTIME or CLOCK_REALTIME rather than
CLOCK_MONOTONIC, instead of the default CLOCK_MONOTONIC.
Add an IORING_TIMEOUT_BOOTTIME and IORING_TIMEOUT_REALTIME flag that
allows timeouts and linked timeouts to use the selected clock source.
Only one clock source may be selected, and we -EINVAL the request if more
than one is given. If neither BOOTIME nor REALTIME are selected, the
previous default of MONOTONIC is used.
Link: https://github.com/axboe/liburing/issues/369
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 | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h index 64fe809c4e36..b6d28d927a3f 100644 --- a/include/uapi/linux/io_uring.h +++ b/include/uapi/linux/io_uring.h @@ -151,6 +151,9 @@ enum { */ #define IORING_TIMEOUT_ABS (1U << 0) #define IORING_TIMEOUT_UPDATE (1U << 1) +#define IORING_TIMEOUT_BOOTTIME (1U << 2) +#define IORING_TIMEOUT_REALTIME (1U << 3) +#define IORING_TIMEOUT_CLOCK_MASK (IORING_TIMEOUT_BOOTTIME | IORING_TIMEOUT_REALTIME) /* * sqe->splice_flags |