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=-2.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no 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 C5AF8C433B4 for ; Wed, 5 May 2021 14:50:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 87480613C3 for ; Wed, 5 May 2021 14:50:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233319AbhEEOvy (ORCPT ); Wed, 5 May 2021 10:51:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43016 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233314AbhEEOvy (ORCPT ); Wed, 5 May 2021 10:51:54 -0400 Received: from mail-qk1-x736.google.com (mail-qk1-x736.google.com [IPv6:2607:f8b0:4864:20::736]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BE9DAC061574 for ; Wed, 5 May 2021 07:50:56 -0700 (PDT) Received: by mail-qk1-x736.google.com with SMTP id o5so1773361qkb.0 for ; Wed, 05 May 2021 07:50:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=HkTRf3LK0xoCqtePJ1BMZv5qHQOAFu2UdzWPx0lcwxc=; b=RJWEChFrqii1aV5eRCy1zePhylWkTOvmRYEt8m2N3426vdgzLronJbpJs+hjYc94hF 4BXh+7o6bR1/06h1YJ7JQcqB25pH0H2DZ4j/YGPIeW+foJ9XUpbkX4CVOIzlew2i4HCI pJ1cgYJ8ETBPEQ5c/nowDYcXSuMn88JLXjSF0TcmQ+zHRCZptFVAJBOWwlaYaANnLpQA pkx5RhrBFaFhytHDkVAESSvUq3vUKa2gz3LPMzOO73fWlVT3ioA9tel0/qtefbSKYy2E xvFxul7ay3oVzLYJsJxA/fCfh4wzbdJL9iRwfWrFJQNjEFG0FCiB2Ri2lcuVkFznDntc CcGA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=HkTRf3LK0xoCqtePJ1BMZv5qHQOAFu2UdzWPx0lcwxc=; b=nAcszuwLyaV8FdKFvVsdZG/YQ/cMGcuxTKpFubl2BsXQKWHE+QaP6hdi5mMf/SGKgd ZnKckw/9i5D9HwwpIFNdAu/xJSms1fNM+tM3HwzUUD66o3pdLC2ejbY6+oelZ5KkR4gU nvHY8qvgrkSIsedT8AO7PHYUSqBnDQNtkPIumU0Xj+uD4F0JNtpFjSy0rM7CsEmCZv5h YhNAe3fA+HOrEHzcZGelKdWB0L/RkqPWLmkcZFkvq4LWbPZbdAW0/IviISnxDOND5j0k slL4l/VwUcPAsCqSKyMqCjCHFXZkxmk7FqjoACrRDE3Y9JfqnIQg15izpqsJ0fM3cKS1 homQ== X-Gm-Message-State: AOAM531mVe4qtH93fJVsROXh6BDEg7bcc/A5AnTckQH4nwID/nrqHxPa kJyBm+6fMJXJTTM4LAD2eS7KqK+CxkHqDYJDeYNo6MZmZ7lP9g== X-Google-Smtp-Source: ABdhPJzd69d0IHi6RjVTtklJoP9/zDtUxouNbPrvlQKb+V7qyqv5TMRwKZ0+vLVlxKfuKz3Bj8Gk6IuayxlGOZGdRAA= X-Received: by 2002:a05:620a:3c3:: with SMTP id r3mr29504556qkm.35.1620226255990; Wed, 05 May 2021 07:50:55 -0700 (PDT) MIME-Version: 1.0 References: <20210505134708.GC346954@joraj-alpa> In-Reply-To: <20210505134708.GC346954@joraj-alpa> From: Lin Wang Date: Wed, 5 May 2021 10:50:45 -0400 Message-ID: Subject: Re: how to continuously capture events To: Jonathan Rajotte-Julien Cc: linux-trace-users@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-trace-users@vger.kernel.org > > I'm trying to continuously capture certain kernel events, convert them > > to a different format and then write them to a file. > > You might also want to have a look at LTTng and LTTng-modules depending on your > final use case. [1][2] >From a cursory look, it might be an overkill for what I want to achieve. I will keep this in mind in case I need to do something more complex. Thank you for the pointers. -Lin On Wed, May 5, 2021 at 9:47 AM Jonathan Rajotte-Julien wrote: > > Hi, > > > I'm trying to continuously capture certain kernel events, convert them > > to a different format and then write them to a file. > > You might also want to have a look at LTTng and LTTng-modules depending on your > final use case. [1][2] > > LTTng produce CTF traces [3] that can then be read/converted/manipulated with Babeltrace [4]. > > [1] https://lttng.org/ > [2] https://lttng.org/docs/v2.12/#doc-tracing-the-linux-kernel > [3] https://diamon.org/ctf/ > [4] https://babeltrace.org/ > > Cheers > > -- > Jonathan Rajotte-Julien > EfficiOS