From patchwork Wed Jun 17 21:15:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yonghong Song X-Patchwork-Id: 1311550 X-Patchwork-Delegate: bpf@iogearbox.net Return-Path: X-Original-To: incoming-bpf@patchwork.ozlabs.org Delivered-To: patchwork-incoming-bpf@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=bpf-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=reject dis=none) header.from=fb.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=fb.com header.i=@fb.com header.a=rsa-sha256 header.s=facebook header.b=UQjJ51xO; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 49nHtQ21BGz9sRf for ; Thu, 18 Jun 2020 07:16:13 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727021AbgFQVQN (ORCPT ); Wed, 17 Jun 2020 17:16:13 -0400 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:30178 "EHLO mx0b-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726955AbgFQVQM (ORCPT ); Wed, 17 Jun 2020 17:16:12 -0400 Received: from pps.filterd (m0148460.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 05HLG5rw024493 for ; Wed, 17 Jun 2020 14:16:11 -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=Htm2914BsDx1DXzzWkYcOLgs6tuz6uzJNwp605TA6Pg=; b=UQjJ51xO0GQqeYBiWVo0k20XI6GVnUqior5oNBcMZa45HCClW8F5T4OlZnkhgdDCUj2p iEQt6aKje9hPb2D0/fEIczWt0Npnxf93S61aRXsqN5T0dclOePMxaqVgV0CmDLUlmqly yhKWQptcQIv4c88A6ssd5Ro+s3OYRrmkswA= Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com with ESMTP id 31q653g1sk-4 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Wed, 17 Jun 2020 14:16:10 -0700 Received: from intmgw003.08.frc2.facebook.com (2620:10d:c0a8:1b::d) by mail.thefacebook.com (2620:10d:c0a8:83::5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Wed, 17 Jun 2020 14:15:45 -0700 Received: by devbig003.ftw2.facebook.com (Postfix, from userid 128203) id 52B463704EF2; Wed, 17 Jun 2020 14:15:40 -0700 (PDT) Smtp-Origin-Hostprefix: devbig From: Yonghong Song Smtp-Origin-Hostname: devbig003.ftw2.facebook.com To: CC: Alexei Starovoitov , Daniel Borkmann , , Martin KaFai Lau Smtp-Origin-Cluster: ftw2c04 Subject: [PATCH bpf-next 04/13] bpf: allow tracing programs to use bpf_jiffies64() helper Date: Wed, 17 Jun 2020 14:15:40 -0700 Message-ID: <20200617211540.1855961-1-yhs@fb.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200617211536.1854348-1-yhs@fb.com> References: <20200617211536.1854348-1-yhs@fb.com> MIME-Version: 1.0 X-FB-Internal: Safe X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.216, 18.0.687 definitions=2020-06-17_11:2020-06-17,2020-06-17 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 clxscore=1015 priorityscore=1501 impostorscore=0 cotscore=-2147483648 suspectscore=13 spamscore=0 lowpriorityscore=0 mlxscore=0 phishscore=0 bulkscore=0 adultscore=0 mlxlogscore=598 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2006170159 X-FB-Internal: deliver Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org /proc/net/tcp{4,6} uses jiffies for various computations. Let us add bpf_jiffies64() helper to tracing program so bpf_iter and other programs can use it. Signed-off-by: Yonghong Song Acked-by: Martin KaFai Lau --- kernel/trace/bpf_trace.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c index dbee30e2ad91..afaec7e082d9 100644 --- a/kernel/trace/bpf_trace.c +++ b/kernel/trace/bpf_trace.c @@ -1135,6 +1135,8 @@ bpf_tracing_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) return &bpf_ringbuf_discard_proto; case BPF_FUNC_ringbuf_query: return &bpf_ringbuf_query_proto; + case BPF_FUNC_jiffies64: + return &bpf_jiffies64_proto; default: return NULL; }