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[PATCH v3 10/15] block/io_uring: adds userspace completion polling
From: |
Stefan Hajnoczi |
Subject: |
[PATCH v3 10/15] block/io_uring: adds userspace completion polling |
Date: |
Wed, 18 Dec 2019 16:32:23 +0000 |
From: Aarushi Mehta <address@hidden>
Signed-off-by: Aarushi Mehta <address@hidden>
Signed-off-by: Stefan Hajnoczi <address@hidden>
---
block/io_uring.c | 17 ++++++++++++++++-
1 file changed, 16 insertions(+), 1 deletion(-)
diff --git a/block/io_uring.c b/block/io_uring.c
index a5c0d16220..56892fd1ab 100644
--- a/block/io_uring.c
+++ b/block/io_uring.c
@@ -274,6 +274,21 @@ static void qemu_luring_completion_cb(void *opaque)
luring_process_completions_and_submit(s);
}
+static bool qemu_luring_poll_cb(void *opaque)
+{
+ LuringState *s = opaque;
+ struct io_uring_cqe *cqes;
+
+ if (io_uring_peek_cqe(&s->ring, &cqes) == 0) {
+ if (cqes) {
+ luring_process_completions_and_submit(s);
+ return true;
+ }
+ }
+
+ return false;
+}
+
static void ioq_init(LuringQueue *io_q)
{
QSIMPLEQ_INIT(&io_q->submit_queue);
@@ -387,7 +402,7 @@ void luring_attach_aio_context(LuringState *s, AioContext
*new_context)
s->aio_context = new_context;
s->completion_bh = aio_bh_new(new_context, qemu_luring_completion_bh, s);
aio_set_fd_handler(s->aio_context, s->ring.ring_fd, false,
- qemu_luring_completion_cb, NULL, NULL, s);
+ qemu_luring_completion_cb, NULL, qemu_luring_poll_cb,
s);
}
LuringState *luring_init(Error **errp)
--
2.23.0
- [PATCH v3 00/15] io_uring: add Linux io_uring AIO engine, Stefan Hajnoczi, 2019/12/18
- [PATCH v3 01/15] configure: permit use of io_uring, Stefan Hajnoczi, 2019/12/18
- [PATCH v3 02/15] qapi/block-core: add option for io_uring, Stefan Hajnoczi, 2019/12/18
- [PATCH v3 03/15] block/block: add BDRV flag for io_uring, Stefan Hajnoczi, 2019/12/18
- [PATCH v3 05/15] stubs: add stubs for io_uring interface, Stefan Hajnoczi, 2019/12/18
- [PATCH v3 04/15] block/io_uring: implements interfaces for io_uring, Stefan Hajnoczi, 2019/12/18
- [PATCH v3 06/15] util/async: add aio interfaces for io_uring, Stefan Hajnoczi, 2019/12/18
- [PATCH v3 07/15] blockdev: adds bdrv_parse_aio to use io_uring, Stefan Hajnoczi, 2019/12/18
- [PATCH v3 08/15] block/file-posix.c: extend to use io_uring, Stefan Hajnoczi, 2019/12/18
- [PATCH v3 09/15] block: add trace events for io_uring, Stefan Hajnoczi, 2019/12/18
- [PATCH v3 10/15] block/io_uring: adds userspace completion polling,
Stefan Hajnoczi <=
- [PATCH v3 11/15] qemu-io: adds option to use aio engine, Stefan Hajnoczi, 2019/12/18
- [PATCH v3 12/15] qemu-img: adds option to use aio engine for benchmarking, Stefan Hajnoczi, 2019/12/18
- [PATCH v3 13/15] qemu-nbd: adds option for aio engines, Stefan Hajnoczi, 2019/12/18
- [PATCH v3 14/15] tests/qemu-iotests: enable testing with aio options, Stefan Hajnoczi, 2019/12/18
- [PATCH v3 15/15] tests/qemu-iotests: use AIOMODE with various tests, Stefan Hajnoczi, 2019/12/18