From patchwork Wed Jul 26 12:59:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Masami Hiramatsu (Google)" X-Patchwork-Id: 13327998 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 B5693C001DC for ; Wed, 26 Jul 2023 13:00:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231497AbjGZNAB (ORCPT ); Wed, 26 Jul 2023 09:00:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58420 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232091AbjGZNAA (ORCPT ); Wed, 26 Jul 2023 09:00:00 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 61B5A1FC4; Wed, 26 Jul 2023 05:59:59 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id CB6D9617A1; Wed, 26 Jul 2023 12:59:58 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 539BBC433C7; Wed, 26 Jul 2023 12:59:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1690376398; bh=qCZGKn1xSuw8bqgTgENy4mv3gBbzcDsXM+kRBp1p2pc=; h=From:To:Cc:Subject:Date:From; b=CajfpC+n/Ntcoxc6eX7AiPKHESntCL6bFmRiiQJpqHppVvw8HSCv+JKx9AZpaIZa2 LUdm1yzAvxPZJS1JxHxXbcrJp6UJyAZD3n0dUsnNujwiEDh6UcfUZdAJM6m/Xyl9MF bJpIETWhqe63knc5HFdLvCTtKPS/rQ+wrUa8h8PESaDLszMHmM3ltfkJKN5Emi95tw hKZcN2mrTjIw5xM4zx+I9pIy69E06ezh9PwGNWlfNpKWkkUW5K6CleoePOQ/+Ll1wa cYfYWOmdXSV+cdwYm1yJC6H9Z6hwZYrEcmeyvl/KbXTp37m+lwEi7b5SdZwsScPeds kAGnm/cLDpeQQ== From: "Masami Hiramatsu (Google)" To: linux-trace-kernel@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Steven Rostedt , mhiramat@kernel.org, Martin KaFai Lau , bpf@vger.kernel.org, Sven Schnelle , Alexei Starovoitov Subject: [PATCH v3 0/9] tracing: Improbe BTF support on probe events Date: Wed, 26 Jul 2023 21:59:53 +0900 Message-Id: <169037639315.607919.2613476171148037242.stgit@devnote2> X-Mailer: git-send-email 2.34.1 User-Agent: StGit/0.19 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-trace-kernel@vger.kernel.org Hi, Here is the 3rd version of series to improve the BTF support on probe events. The previous series is here: https://lore.kernel.org/all/168960739768.34107.15145201749042174448.stgit@devnote2/ The fixes patch in the previous version has been sent in different series. https://lore.kernel.org/all/169024903018.395371.1006584451160707296.stgit@devnote2/ In this version, I added BTF support on module symbols (this will be the biggest change) [1/9] and cleanup the btf APIs [2/9][3/9] according to the comment. Also [5/9] introduce a query_btf_context() for simplifying common fields in traceprobe_parse_context. [8/9] added more complex test case for structure field access. And [9/9] update the documentation about the mixture of '.' and '->'. This series can be applied on top of "probes/core" branch of https://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git/ You can also get this series from: git://git.kernel.org/pub/scm/linux/kernel/git/mhiramat/linux.git topic/fprobe-event-ext Thank you, --- Masami Hiramatsu (Google) (9): tracing/probes: Support BTF argument on module functions bpf/btf: tracing: Move finding func-proto API and getting func-param API to BTF bpf/btf: Add a function to search a member of a struct/union tracing/probes: Support BTF based data structure field access tracing/probes: Support BTF field access from $retval tracing/probes: Add string type check with BTF tracing/fprobe-event: Assume fprobe is a return event by $retval selftests/ftrace: Add BTF fields access testcases Documentation: tracing: Update fprobe event example with BTF field Documentation/trace/fprobetrace.rst | 64 ++- include/linux/btf.h | 8 kernel/bpf/btf.c | 84 +++ kernel/trace/trace_eprobe.c | 4 kernel/trace/trace_fprobe.c | 59 ++ kernel/trace/trace_kprobe.c | 1 kernel/trace/trace_probe.c | 487 +++++++++++++++----- kernel/trace/trace_probe.h | 27 + kernel/trace/trace_uprobe.c | 1 .../ftrace/test.d/dynevent/add_remove_btfarg.tc | 14 + .../ftrace/test.d/dynevent/fprobe_syntax_errors.tc | 6 11 files changed, 582 insertions(+), 173 deletions(-) -- Masami Hiramatsu (Google)