diff options
| author | Aarushi Mehta <mehta.aaru20@gmail.com> | 2020-01-20 14:18:48 +0000 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2020-01-30 20:59:41 +0000 |
| commit | 06a47ef57c3baa9b06006cd424afe89bbaf162b5 (patch) | |
| tree | 87f7c9880b1b9cd6c369aa54c3e2c9c8c331a1cf | |
| parent | 6663a0a33764613bfa0bcac5cc7a6f14bd04ee34 (diff) | |
stubs: add stubs for io_uring interface
Follow linux-aio.o and stub out the block/io_uring.o APIs that will be
missing when a binary is linked with obj-util-y but without
block-util-y (e.g. vhost-user-gpu).
For example, the stubs are necessary so that a binary using util/async.o
from obj-util-y for qemu_bh_new() links successfully. In this case
block/io_uring.o from block-util-y isn't needed and we can avoid
dragging in the block layer by linking the stubs instead. The stub
functions never get called.
Signed-off-by: Aarushi Mehta <mehta.aaru20@gmail.com>
Acked-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20200120141858.587874-6-stefanha@redhat.com
Message-Id: <20200120141858.587874-6-stefanha@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
| -rw-r--r-- | MAINTAINERS | 1 | ||||
| -rw-r--r-- | stubs/Makefile.objs | 1 | ||||
| -rw-r--r-- | stubs/io_uring.c | 32 |
3 files changed, 34 insertions, 0 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index a19437c13d..4ceb1ad882 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2641,6 +2641,7 @@ M: Stefan Hajnoczi <stefanha@redhat.com> L: qemu-block@nongnu.org S: Maintained F: block/io_uring.c +F: stubs/io_uring.c qcow2 M: Kevin Wolf <kwolf@redhat.com> diff --git a/stubs/Makefile.objs b/stubs/Makefile.objs index 8b0ff25508..7afbe5fb61 100644 --- a/stubs/Makefile.objs +++ b/stubs/Makefile.objs @@ -13,6 +13,7 @@ stub-obj-y += iothread.o stub-obj-y += iothread-lock.o stub-obj-y += is-daemonized.o stub-obj-$(CONFIG_LINUX_AIO) += linux-aio.o +stub-obj-$(CONFIG_LINUX_IO_URING) += io_uring.o stub-obj-y += machine-init-done.o stub-obj-y += migr-blocker.o stub-obj-y += change-state-handler.o diff --git a/stubs/io_uring.c b/stubs/io_uring.c new file mode 100644 index 0000000000..622d1e4648 --- /dev/null +++ b/stubs/io_uring.c @@ -0,0 +1,32 @@ +/* + * Linux io_uring support. + * + * Copyright (C) 2009 IBM, Corp. + * Copyright (C) 2009 Red Hat, Inc. + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ +#include "qemu/osdep.h" +#include "block/aio.h" +#include "block/raw-aio.h" + +void luring_detach_aio_context(LuringState *s, AioContext *old_context) +{ + abort(); +} + +void luring_attach_aio_context(LuringState *s, AioContext *new_context) +{ + abort(); +} + +LuringState *luring_init(Error **errp) +{ + abort(); +} + +void luring_cleanup(LuringState *s) +{ + abort(); +} |