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| author | Jiufei Xue <jiufei.xue@linux.alibaba.com> | 2020-06-17 17:53:55 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-06-21 20:44:00 -0600 |
| commit | 5769a351b89cd4d82016f18fa5f6c4077403564d (patch) | |
| tree | 2f700e8e397716e725661515f65ef9f146e4db5c /tools/io_uring | |
| parent | 48778464bb7d346b47157d21ffde2af6b2d39110 (diff) | |
| download | linux-5769a351b89cd4d82016f18fa5f6c4077403564d.tar.gz | |
io_uring: change the poll type to be 32-bits
poll events should be 32-bits to cover EPOLLEXCLUSIVE. Explicit word-swap the poll32_events for big endian to make sure the ABI is not changed. We call this feature IORING_FEAT_POLL_32BITS, applications who want to use EPOLLEXCLUSIVE should check the feature bit first. Signed-off-by: Jiufei Xue <jiufei.xue@linux.alibaba.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'tools/io_uring')
| -rw-r--r-- | tools/io_uring/liburing.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/tools/io_uring/liburing.h b/tools/io_uring/liburing.h index 5f305c86b892..28a837b6069d 100644 --- a/tools/io_uring/liburing.h +++ b/tools/io_uring/liburing.h @@ -10,6 +10,7 @@ extern "C" { #include <string.h> #include "../../include/uapi/linux/io_uring.h" #include <inttypes.h> +#include <linux/swab.h> #include "barrier.h" /* @@ -145,11 +146,14 @@ static inline void io_uring_prep_write_fixed(struct io_uring_sqe *sqe, int fd, } static inline void io_uring_prep_poll_add(struct io_uring_sqe *sqe, int fd, - short poll_mask) + unsigned poll_mask) { memset(sqe, 0, sizeof(*sqe)); sqe->opcode = IORING_OP_POLL_ADD; sqe->fd = fd; +#if __BYTE_ORDER == __BIG_ENDIAN + poll_mask = __swahw32(poll_mask); +#endif sqe->poll_events = poll_mask; } |