Received: by 2002:a05:6a10:8c0a:0:0:0:0 with SMTP id go10csp2727344pxb; Tue, 19 Jan 2021 04:47:22 -0800 (PST) X-Google-Smtp-Source: ABdhPJycKdflnbxwvH9Jp33QSAmSzEVOgJqgfpBG7pXugzcQZj5nLQr7dM1h2PqBKs4xaw6dilPq X-Received: by 2002:a17:906:c055:: with SMTP id bm21mr2859740ejb.520.1611060442424; Tue, 19 Jan 2021 04:47:22 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1611060442; cv=none; d=google.com; s=arc-20160816; b=FjEoEYN25ORE5qNcIXGH694L9U5sugQY+QTEKyWCNqdqDXq0NEWdJzbkhKRWUQFrfX PT9lFBvaJQSFXSx0okbzTCkwhPe+HrL3usSn7V3P4s0XfyCKX5Vv4QiKR54IdbODGuyX T2CPNPwctRMc80GPMJhhUeYl+Am+rN+52vAZJuBHPg+Sv+gTpKQ/Ifkrhr9S+mBdnRX+ RELAg9kok9fp66wrOui4NE+97F+f01dAirwntdJe+tdLWpyZ0ZRtDd8Fcxnilh+qL8/E vruB+IBhYlBsoSe1RTy8VeNDroQ912g2V/nJ/775TbPhMkR8DpT4X2pScfGJhibatZ8T 1MTw== 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=4csojYovqpoHTl7LhjOuNBCYZPdQpRCtuQjRPNSCE24=; b=NNSan0zm8+az9aVrq6Uq/VnWDe6eZivTnWyNI60K1zElmBKD8ZsR94X63yTIh71zJI /ltXkxAnYBy8WOAMc91i5ryHq3FNyDjvQCt+foR1Kpcjzi6ogScqPsMJmlZtmGEw3jmf QNqIhPvJDgFLTuLVEdjK6NbQ0ZxaSFElig85mifaIqQNgJcz9fm9Sz+z8ffy8pRvzJHI yHn/MdOpcOfT8rL3YBqG3W+ruwE7qdGblnelqxq5hxnZKUq5Sb5s+XnA+5D6wT6qJLCe hY2ZakaCnLy0KI7j00jHCpqOvMs9hYfg2TfLwnlXoAvnt2oDzltewC0jRQkn13bZKcbv mAYg== 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 j15si5368034edl.323.2021.01.19.04.46.58; Tue, 19 Jan 2021 04:47:22 -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 S2392916AbhASMam (ORCPT + 99 others); Tue, 19 Jan 2021 07:30:42 -0500 Received: from foss.arm.com ([217.140.110.172]:54686 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390818AbhASMX5 (ORCPT ); Tue, 19 Jan 2021 07:23:57 -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 0FD7E113E; Tue, 19 Jan 2021 04:22:46 -0800 (PST) Received: from e107158-lin.cambridge.arm.com (unknown [10.1.194.78]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id B3C3C3F719; Tue, 19 Jan 2021 04:22:44 -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 v3 bpf-next 0/2] Allow attaching to bare tracepoints Date: Tue, 19 Jan 2021 12:22:35 +0000 Message-Id: <20210119122237.2426878-1-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 v3: * Fix not returning error value correctly in trigger_module_test_write() (Yonghong) * Add Yonghong acked-by to patch 1. Changes in v2: * Fix compilation error. (Andrii) * Make the new test use write() instead of read() (Andrii) 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