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Tue, 14 Jan 2020 11:00:14 +0000 (UTC) From: Stefan Hajnoczi To: qemu-devel@nongnu.org Subject: [PATCH v4 06/15] util/async: add aio interfaces for io_uring Date: Tue, 14 Jan 2020 10:59:12 +0000 Message-Id: <20200114105921.131880-7-stefanha@redhat.com> In-Reply-To: <20200114105921.131880-1-stefanha@redhat.com> References: <20200114105921.131880-1-stefanha@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-MC-Unique: MR72rQuDPMqbh44TWf13aA-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Fam Zheng , qemu-block@nongnu.org, oleksandr@redhat.com, Julia Suvorova , Markus Armbruster , Max Reitz , Stefan Hajnoczi , Paolo Bonzini , Aarushi Mehta , Stefano Garzarella Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Aarushi Mehta Signed-off-by: Aarushi Mehta Acked-by: Stefano Garzarella Signed-off-by: Stefan Hajnoczi --- util/async.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/util/async.c b/util/async.c index b1fa5319e5..c192a24a61 100644 --- a/util/async.c +++ b/util/async.c @@ -276,6 +276,14 @@ aio_ctx_finalize(GSource *source) } #endif =20 +#ifdef CONFIG_LINUX_IO_URING + if (ctx->linux_io_uring) { + luring_detach_aio_context(ctx->linux_io_uring, ctx); + luring_cleanup(ctx->linux_io_uring); + ctx->linux_io_uring =3D NULL; + } +#endif + assert(QSLIST_EMPTY(&ctx->scheduled_coroutines)); qemu_bh_delete(ctx->co_schedule_bh); =20 @@ -340,6 +348,29 @@ LinuxAioState *aio_get_linux_aio(AioContext *ctx) } #endif =20 +#ifdef CONFIG_LINUX_IO_URING +LuringState *aio_setup_linux_io_uring(AioContext *ctx, Error **errp) +{ + if (ctx->linux_io_uring) { + return ctx->linux_io_uring; + } + + ctx->linux_io_uring =3D luring_init(errp); + if (!ctx->linux_io_uring) { + return NULL; + } + + luring_attach_aio_context(ctx->linux_io_uring, ctx); + return ctx->linux_io_uring; +} + +LuringState *aio_get_linux_io_uring(AioContext *ctx) +{ + assert(ctx->linux_io_uring); + return ctx->linux_io_uring; +} +#endif + void aio_notify(AioContext *ctx) { /* Write e.g. bh->scheduled before reading ctx->notify_me. Pairs @@ -434,6 +465,11 @@ AioContext *aio_context_new(Error **errp) #ifdef CONFIG_LINUX_AIO ctx->linux_aio =3D NULL; #endif + +#ifdef CONFIG_LINUX_IO_URING + ctx->linux_io_uring =3D NULL; +#endif + ctx->thread_pool =3D NULL; qemu_rec_mutex_init(&ctx->lock); timerlistgroup_init(&ctx->tlg, aio_timerlist_notify, ctx); --=20 2.24.1