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Mon, 20 Jan 2020 14:20:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1579530039; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=o8BVFrFEfvciksl8D9jN4lPgkp/gkSTZlJEjXrcQiRE=; b=i7azWVgXjplOrPxGwA84Hiv2nJgX+MmhHlh27sVy7luf6IJwYhdmSJ9eKxjx0m5Gpzvxh+ tgcr56OBxrolqlPyPPyVe2pOSBE4P73f1yVfEXuVewRyzm9UbOuYrRFOES85YsQo5JeApf VrNdwdOpFaYDEG0ko/6kcci2YMA1EX4= From: Stefan Hajnoczi To: qemu-devel@nongnu.org Subject: [PATCH v5 10/15] block/io_uring: adds userspace completion polling Date: Mon, 20 Jan 2020 14:18:53 +0000 Message-Id: <20200120141858.587874-11-stefanha@redhat.com> In-Reply-To: <20200120141858.587874-1-stefanha@redhat.com> References: <20200120141858.587874-1-stefanha@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-MC-Unique: XBgoGrL3PhmUy1H5WZYtkg-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com 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: 207.211.31.81 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: oleksandr@redhat.com, Kevin Wolf , qemu-block@nongnu.org, Julia Suvorova , Markus Armbruster , Max Reitz , Stefan Hajnoczi , Paolo Bonzini , Fam Zheng , Aarushi Mehta , Stefano Garzarella Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" From: Aarushi Mehta Signed-off-by: Aarushi Mehta Acked-by: Stefano Garzarella Signed-off-by: Stefan Hajnoczi --- 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); } =20 +static bool qemu_luring_poll_cb(void *opaque) +{ + LuringState *s =3D opaque; + struct io_uring_cqe *cqes; + + if (io_uring_peek_cqe(&s->ring, &cqes) =3D=3D 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, AioConte= xt *new_context) s->aio_context =3D new_context; s->completion_bh =3D 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_c= b, s); } =20 LuringState *luring_init(Error **errp) --=20 2.24.1