From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 21CFEC4321E for ; Thu, 21 Apr 2022 09:17:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1387453AbiDUJUA (ORCPT ); Thu, 21 Apr 2022 05:20:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57726 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1387450AbiDUJT6 (ORCPT ); Thu, 21 Apr 2022 05:19:58 -0400 Received: from mx0b-00082601.pphosted.com (mx0b-00082601.pphosted.com [67.231.153.30]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 483A714084 for ; Thu, 21 Apr 2022 02:17:09 -0700 (PDT) Received: from pps.filterd (m0109331.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.1.2/8.16.1.2) with ESMTP id 23KL3Pme007320 for ; Thu, 21 Apr 2022 02:17:08 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=facebook; bh=DX6ytzEKTL5duvmKH/e/++KuZNvGuRCr7bx9oCW9eMA=; b=od7P82sRevfiZJOcn5YV5zeOVrsGoTp6XSZMp1F7jpFZ36U7oc4jqbq/UBEgOQV7gsE/ qfEzophPeVsnMQxY+zeuAHqk7eLPKY77JMfu7cArYmfWUCGpGTWcczfmSZKvx/SYUpey aj8JQZM7/Tbxv3GeVxnYaVpVN5Mq/en49Ec= Received: from mail.thefacebook.com ([163.114.132.120]) by mx0a-00082601.pphosted.com (PPS) with ESMTPS id 3fjsrju40q-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Thu, 21 Apr 2022 02:17:08 -0700 Received: from snc-exhub201.TheFacebook.com (2620:10d:c085:21d::7) by snc-exhub103.TheFacebook.com (2620:10d:c085:11d::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Thu, 21 Apr 2022 02:17:07 -0700 Received: from twshared4937.07.ash9.facebook.com (2620:10d:c085:108::4) by mail.thefacebook.com (2620:10d:c085:21d::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Thu, 21 Apr 2022 02:17:06 -0700 Received: by devbig039.lla1.facebook.com (Postfix, from userid 572232) id EB3EF7CA75FC; Thu, 21 Apr 2022 02:14:01 -0700 (PDT) From: Dylan Yudaken To: CC: , , , , Dylan Yudaken Subject: [PATCH 2/6] io_uring: trace cqe overflows Date: Thu, 21 Apr 2022 02:13:41 -0700 Message-ID: <20220421091345.2115755-3-dylany@fb.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220421091345.2115755-1-dylany@fb.com> References: <20220421091345.2115755-1-dylany@fb.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-FB-Internal: Safe Content-Type: text/plain X-Proofpoint-ORIG-GUID: VllGvL6ife8jR31HVOYs5QzkEQYO431P X-Proofpoint-GUID: VllGvL6ife8jR31HVOYs5QzkEQYO431P X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.858,Hydra:6.0.486,FMLib:17.11.64.514 definitions=2022-04-20_06,2022-04-20_01,2022-02-23_01 Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org Trace cqe overflows in io_uring. Print ocqe before the check, so if it is NULL it indicates that it has been dropped. Signed-off-by: Dylan Yudaken --- fs/io_uring.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/io_uring.c b/fs/io_uring.c index 7e1d5243bbbc..d654faffa486 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -2107,6 +2107,7 @@ static bool io_cqring_event_overflow(struct io_ring= _ctx *ctx, u64 user_data, struct io_overflow_cqe *ocqe; =20 ocqe =3D kmalloc(sizeof(*ocqe), GFP_ATOMIC | __GFP_ACCOUNT); + trace_io_uring_cqe_overflow(ctx, user_data, res, cflags, ocqe); if (!ocqe) { /* * If we're in ring overflow flush mode, or in task cancel mode, --=20 2.30.2