From patchwork Tue Jun 23 00:36:30 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yonghong Song X-Patchwork-Id: 217357 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5A702C433E2 for ; Tue, 23 Jun 2020 00:37:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 37ECE207DD for ; Tue, 23 Jun 2020 00:37:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b="ecUcI26j" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732125AbgFWAhL (ORCPT ); Mon, 22 Jun 2020 20:37:11 -0400 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:11032 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732119AbgFWAhK (ORCPT ); Mon, 22 Jun 2020 20:37:10 -0400 Received: from pps.filterd (m0109333.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 05N0b9OI021108 for ; Mon, 22 Jun 2020 17:37:09 -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=z7spgnSOmuscC2mGy1XIVWhqozMpxXywcMyrApiOdZk=; b=ecUcI26jdGNgp/gwW0ScPoQRur5pSXSTGtaFQEklbXiufqAOsKgWVtcvlgMZyn17Wik0 2YYJ2un0Dg680lHTEwQMu5w0EzuAdHIBvvwA2VKyLqBnGHIHtIm+Fu27bojqre88MgaS zxgXknHnaDCqdWZYFMijdns0+KKuxdEoFEg= Received: from mail.thefacebook.com ([163.114.132.120]) by mx0a-00082601.pphosted.com with ESMTP id 31t25brdkc-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Mon, 22 Jun 2020 17:37:09 -0700 Received: from intmgw005.03.ash8.facebook.com (2620:10d:c085:108::8) 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 15.1.1979.3; Mon, 22 Jun 2020 17:36:37 -0700 Received: by devbig003.ftw2.facebook.com (Postfix, from userid 128203) id 1078E3705002; Mon, 22 Jun 2020 17:36:30 -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 v3 04/15] bpf: allow tracing programs to use bpf_jiffies64() helper Date: Mon, 22 Jun 2020 17:36:30 -0700 Message-ID: <20200623003630.3073655-1-yhs@fb.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200623003626.3072825-1-yhs@fb.com> References: <20200623003626.3072825-1-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=2020-06-22_16:2020-06-22,2020-06-22 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 clxscore=1015 phishscore=0 impostorscore=0 cotscore=-2147483648 bulkscore=0 lowpriorityscore=0 spamscore=0 mlxlogscore=697 adultscore=0 suspectscore=8 mlxscore=0 malwarescore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2006230000 X-FB-Internal: deliver Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@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. Acked-by: Martin KaFai Lau Signed-off-by: Yonghong Song --- 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; }