From patchwork Tue Nov 5 07:25:24 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cindy Lu X-Patchwork-Id: 13862592 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4137D1FEFC9 for ; Tue, 5 Nov 2024 07:27:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730791674; cv=none; b=tD1QiPeAbMLeCy6x5N0261vzpBj3h2Qe0t1B9A+zsyShv/yD8cr9RGVbUk0XioY1pb7EqSlQnhr4T5e31G+xWSIAoisAyuzdthleiBq4EY7upHO+PLHtWu7fZXXr2p0WzCHFQxHDR3ieDjfpBTdWC0XVGT/zA3UzibLxQOSDqek= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730791674; c=relaxed/simple; bh=+38GjQ5iNed2+14XtChEVV9Ul7oBJUOLzQdRTNmOgpQ=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=u4N3oVCKAp4rPItG7p9pLM+naUp4jG63rBagUMT2RWPKZ5MGMj2+OMw5uhLU+pshsAH/v7ilbxcP65ooSB1vvVpXBP/wu4FSHhzAqBhpr3230l0lqdQinVpHd4r+6kDAy7j8hfTwDfavl6rnpkgxofTCXtDEXV6Vi5fMEmgK/J4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=GC8ibTWI; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="GC8ibTWI" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1730791672; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=pPknO6DVyO1LjLhZHYo5oROtWHiUqkzRt9HMN0ycP2A=; b=GC8ibTWIO5A3lCaIHQ9yp2HgewmiHsg3PrzSz3ADoKzZYd4NR0qxG+//U23tNS7ArTLIYZ CzkTbL+M4ph8hWTRirWIFQSpZpUW1zg+sMfbU90hdfLrpTeM/dokhGUcsfz4795xIGdHsW 6Wqe4c83i3e4asn6Cjf1dvGTP8fbpRc= Received: from mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-17-18RcnFfyPAuvZxSF-A6PBg-1; Tue, 05 Nov 2024 02:27:50 -0500 X-MC-Unique: 18RcnFfyPAuvZxSF-A6PBg-1 Received: from mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.15]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id B6BC719560A2; Tue, 5 Nov 2024 07:27:49 +0000 (UTC) Received: from server.redhat.com (unknown [10.72.112.50]) by mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 64CC91956086; Tue, 5 Nov 2024 07:27:44 +0000 (UTC) From: Cindy Lu To: lulu@redhat.com, jasowang@redhat.com, mst@redhat.com, michael.christie@oracle.com, sgarzare@redhat.com, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org Subject: [PATCH v3 5/9] vhost: Add kthread support in function vhost_worker_queue() Date: Tue, 5 Nov 2024 15:25:24 +0800 Message-ID: <20241105072642.898710-6-lulu@redhat.com> In-Reply-To: <20241105072642.898710-1-lulu@redhat.com> References: <20241105072642.898710-1-lulu@redhat.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.15 The function vhost_worker_queue() uses vhost_task_fn and selects the different mode based on the value of inherit_owner. Signed-off-by: Cindy Lu --- drivers/vhost/vhost.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index 603b146fccc1..8b7ddfb33c61 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -238,13 +238,18 @@ EXPORT_SYMBOL_GPL(vhost_poll_stop); static void vhost_worker_queue(struct vhost_worker *worker, struct vhost_work *work) { + if (!worker && !worker->fn) + return; + if (!test_and_set_bit(VHOST_WORK_QUEUED, &work->flags)) { /* We can only add the work to the list after we're * sure it was not in the list. * test_and_set_bit() implies a memory barrier. */ llist_add(&work->node, &worker->work_list); - vhost_task_wake(worker->vtsk); + worker->fn->wakeup(worker->dev->inherit_owner ? + (void *)worker->vtsk : + (void *)worker->task); } }