From mboxrd@z Thu Jan 1 00:00:00 1970 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=-5.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=ham 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 AFF19C07542 for ; Sat, 25 May 2019 16:58:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 78F2E20879 for ; Sat, 25 May 2019 16:58:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="f1iL5rjb" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727239AbfEYQ6L (ORCPT ); Sat, 25 May 2019 12:58:11 -0400 Received: from mail-pf1-f196.google.com ([209.85.210.196]:39234 "EHLO mail-pf1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727028AbfEYQ6L (ORCPT ); Sat, 25 May 2019 12:58:11 -0400 Received: by mail-pf1-f196.google.com with SMTP id z26so7149016pfg.6 for ; Sat, 25 May 2019 09:58:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=+aQqWzt66jrrDi2emr9tHOYNw97iSCax0BxY/rhchcY=; b=f1iL5rjbcx05E+yDBGqEbbV/7PFjs8GXhMD0uJox1RxA/AS9E+dnvQPKxuFJF/RWg9 KTDgSmoaqqPGc7mBW5zX/idYQD/87851p0Y2o5uGDDLq8MYjuE7mFUgQ1BJY24jI+5UV UoN9WxjRD6CXsqixXXbfTh+zjExbiGI3MSyoUG+dpj+hi7EizBe67xjY4dykkRBb/EPO R1wSXamtc6dQKh30/ZO6YLXcrq7vGYfxTF23kRcprH9Akdo5du6/h06iBL+t8DbpsJG1 V1YperF41yxqKTBRT0/5RyOHBihnBCPqCs6pulqeFXspjH+hn//2v+TzFKaolDqiRVl5 2Ujg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=+aQqWzt66jrrDi2emr9tHOYNw97iSCax0BxY/rhchcY=; b=rYxxU3myW89XWrAW4ulHHDVkD3Y/SKKhBxrWwgHHygLVqYb/cdLTS8njbnT459hInS lqqZuiQMaOM4EqG9KbVSMJUJY08/eon/eKZuvHpXNtZEPr0gGpPWtRqDfLNnQj5yix6a 6uWoyyJO3WULyA8qttLKSiFTsZmVIpwm2gPKfH8J6BqbyZ3CgGGVhe/ugcNLtyz11FL/ 6x/ba4q2xap+la4b3vI2l7UUDYs0ihjPyCZWl1HUdFXREhmLlVEDQSo0KzoAL3BgTAjS zdab7YSMcJYISBUW29A3p9ldGW8VUwAAAjDllXRR8BsJQoDMJEHpRlbmmBX0nk2iYQEj a9EQ== X-Gm-Message-State: APjAAAVCZAI2wukxKfWQ8m/qEg0hMbSPQrerzIT6vzvhY35oxXSuUpvQ BQBp76JqxmMxXz1CdqZClkaNGsWy X-Google-Smtp-Source: APXvYqzQ5wfVbk9rxXY03f7RUGH9l2VVBvCN+TyN1BzfbPpAxccFHPmEzC7WDTqyRI0OSlWU7hBFBA== X-Received: by 2002:a63:d901:: with SMTP id r1mr28706454pgg.271.1558803489975; Sat, 25 May 2019 09:58:09 -0700 (PDT) Received: from tw-172-25-31-76.office.twttr.net ([8.25.197.24]) by smtp.gmail.com with ESMTPSA id q142sm8787585pfc.27.2019.05.25.09.58.08 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sat, 25 May 2019 09:58:08 -0700 (PDT) From: Cong Wang To: linux-kernel@vger.kernel.org Cc: Cong Wang , Steven Rostedt , Ingo Molnar Subject: [PATCH 0/4] trace: introduce trace event injection Date: Sat, 25 May 2019 09:57:58 -0700 Message-Id: <20190525165802.25944-1-xiyou.wangcong@gmail.com> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patchset introduces trace event injection, the first 3 patches are some trivial prerequisites, the last one implements the trace event injection. Please check each patch for details. I have tested them with both valid and invalid input on different tracepoints, it works as expected. Cc: Steven Rostedt Cc: Ingo Molnar Signed-off-by: Cong Wang --- Cong Wang (4): trace: fold type initialization into tracing_generic_entry_update() trace: let filter_assign_type() detect FILTER_PTR_STRING trace: make trace_get_fields() global trace: introduce trace event injection include/linux/trace_events.h | 9 + kernel/trace/Makefile | 1 + kernel/trace/trace.c | 8 +- kernel/trace/trace.h | 1 + kernel/trace/trace_event_perf.c | 3 +- kernel/trace/trace_events.c | 12 +- kernel/trace/trace_events_filter.c | 3 + kernel/trace/trace_events_inject.c | 330 +++++++++++++++++++++++++++++ 8 files changed, 353 insertions(+), 14 deletions(-) create mode 100644 kernel/trace/trace_events_inject.c -- 2.21.0