Received: by 2002:a05:6a10:8c0a:0:0:0:0 with SMTP id go10csp888668pxb; Sat, 16 Jan 2021 10:26:29 -0800 (PST) X-Google-Smtp-Source: ABdhPJyc5D9ISkiO73ujDNwbOg8xRSb7KymABqVIGjHBoJ9F4CQ6bTT+HbsggFKa4dkNnJWtEYX4 X-Received: by 2002:a17:906:d209:: with SMTP id w9mr12408736ejz.211.1610821589653; Sat, 16 Jan 2021 10:26:29 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1610821589; cv=none; d=google.com; s=arc-20160816; b=N9DoXM9TYVbVtfyHq+PuSmda7jNPSp369SIJ/sas1aqTqK3MHEUYjND3+UUlbCVEYf uWzt9e0nhZupPh1FoGJLaR2DKHU1DRlnNXAaA7lNdn9nP9vVmGKFVGLqzEzFbTea/sUI 9hu4+3DC7BiuGLCbptHLJhrXOW5eCXnlkFVssArSXMEbwvmTXUgL3XqPvaFOr/jYjdRY rLFOlW0k7FbRkSD6vAnzsEiNwGY9cmVZeGEM0eb+MTWr9hYTzxeN2eAGT7NnVD08nEqU IJp4occTnPNiKa5xg2aYNLGD1gCcbVLEkTN0O5Lh2YM5Hjx8SKwqPjVzo17FTcRnxgf3 kw4w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :message-id:date:subject:cc:to:from; bh=8GXw1kvPUh1izLgDvPKllLQYyV9N6w/J7TSba7FKxdw=; b=aFjr/IaNBxc1NEeQr7UFgpkKM2dCff5aGPSwZOBrJb+BgkR/sX8nhQSI6jqGhxEjgN TkB4H3wrbuNvL4m4tzReU9e004zD3IHdU43VqhcfLoEVDzYvylGQJ4ZefFJoj7iD/+CT bzT4wAuJJT7CIxDSXHNoUxBTU5XZpOP47Dg2PqE401uRVRQe1EsJbeM1L4sx3NqEBjOJ QvhRLrpndtsT6RZb7KiYx5vXueAV4Vjpw4w+mgtQ5O1NlvOLKMgXtcrlmeZb7IQXYlqa nha8TXoVgsSA1jKUBSMzknrsnFrzsSIrb2u+W7O8EcRZv2bLrO0sxdOQotk0kHsx49qy 65lg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=arm.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id x27si5755013ejb.485.2021.01.16.10.26.06; Sat, 16 Jan 2021 10:26:29 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=arm.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727807AbhAPSWv (ORCPT + 99 others); Sat, 16 Jan 2021 13:22:51 -0500 Received: from foss.arm.com ([217.140.110.172]:56640 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727407AbhAPSWu (ORCPT ); Sat, 16 Jan 2021 13:22:50 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 5C76BD6E; Sat, 16 Jan 2021 10:22:04 -0800 (PST) Received: from e107158-lin.cambridge.arm.com (e107158-lin.cambridge.arm.com [10.1.194.78]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 083B03F70D; Sat, 16 Jan 2021 10:22:02 -0800 (PST) From: Qais Yousef To: netdev@vger.kernel.org, bpf@vger.kernel.org Cc: Alexei Starovoitov , Andrii Nakryiko , Daniel Borkmann , Yonghong Song , Steven Rostedt , "Peter Zijlstra (Intel)" , linux-kernel@vger.kernel.org, Qais Yousef Subject: [PATCH v2 bpf-next 0/2] Allow attaching to bare tracepoints Date: Sat, 16 Jan 2021 18:21:31 +0000 Message-Id: <20210116182133.2286884-1-qais.yousef@arm.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Changes in v2: * Fix compilation error. * Make the new test use write() instead of read() Add some missing glue logic to teach bpf about bare tracepoints - tracepoints without any trace event associated with them. Bare tracepoints are declare with DECLARE_TRACE(). Full tracepoints are declare with TRACE_EVENT(). BPF can attach to these tracepoints as RAW_TRACEPOINT() only as there're no events in tracefs created with them. Qais Yousef (2): trace: bpf: Allow bpf to attach to bare tracepoints selftests: bpf: Add a new test for bare tracepoints Documentation/bpf/bpf_design_QA.rst | 6 +++++ include/trace/bpf_probe.h | 12 +++++++-- .../bpf/bpf_testmod/bpf_testmod-events.h | 6 +++++ .../selftests/bpf/bpf_testmod/bpf_testmod.c | 21 ++++++++++++++- .../selftests/bpf/bpf_testmod/bpf_testmod.h | 6 +++++ .../selftests/bpf/prog_tests/module_attach.c | 27 +++++++++++++++++++ .../selftests/bpf/progs/test_module_attach.c | 10 +++++++ 7 files changed, 85 insertions(+), 3 deletions(-) -- 2.25.1