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=-1.1 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,HTML_MESSAGE, 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 C2422C433DF for ; Wed, 13 May 2020 15:35:37 +0000 (UTC) Received: from lists.lttng.org (lists.lttng.org [167.114.26.123]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C327A204EF for ; Wed, 13 May 2020 15:35:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.lttng.org header.i=@lists.lttng.org header.b="W6YAwpUA" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C327A204EF Authentication-Results: mail.kernel.org; dmarc=pass (p=none dis=none) header.from=lists.lttng.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lttng-dev-bounces@lists.lttng.org Received: from lists-lttng01.efficios.com (localhost [IPv6:::1]) by lists.lttng.org (Postfix) with ESMTP id 49MdzX0gSgz220v; Wed, 13 May 2020 11:35:36 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=lists.lttng.org; s=default; t=1589384136; bh=YzVz5cXQZasOxQbx54M5no+KbINrvlgHIo5cQp9QzTA=; h=References:In-Reply-To:Date:To:Cc:Subject:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From:Reply-To:From; b=W6YAwpUA4Nkt7FXC9cmKe1T5LoY2f4+/3y1jGcUQJMVdSlkzupIQscJeDTNVL9tGo P7ivlbZmyk75n4b9l/aTXcqeYOsQy+Mfu8EWaxGIShRKZfHgHTN0AeUve4os8lrqSW OsklsS8qMxE9/pt3k2rCeSJ3YIYvSHUgPcab9KIsE10xOMrqe+QAogFOUFAe2ePlJn e/beJviDy4Q7ElmL5kac1S33V2sg7V1c7GQl0LxJh4o4phAqLv8GBHcPjaaOEEjLBO YjyH/FilgXDy10NKuVWz8ObVg1E96O8zLQGi+Cnhbv7EXnGi6W0Y4jfsWxAMxnHtW9 Z7U36CPOdwiFw== Received: from mail-ej1-x62c.google.com (mail-ej1-x62c.google.com [IPv6:2a00:1450:4864:20::62c]) by lists.lttng.org (Postfix) with ESMTPS id 49MdzT1XkDz223T for ; Wed, 13 May 2020 11:35:32 -0400 (EDT) Received: by mail-ej1-x62c.google.com with SMTP id n17so14574590ejh.7 for ; Wed, 13 May 2020 08:35:32 -0700 (PDT) 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=jPZkcpFWe6BhI//tcMcuFE1NeG5WO1BAezj0QusI0Pc=; b=jTwsXbUKM5dpRsQwQKDEvMrA/sKAaSOMK3IYsWBfG4N2ZZUZn/ZRmX1U8jnk+l+OZF /vjXfJtV1ulPm7SNjkHlut4XUT4FZNttk9/GG98KEjxY7/RsfUUFpwTm5xKmgXXmqyGv Z971z96b6I6N8/NqL9xQAIjlwjkdlLrxTx88NLA8IvLgQsCe2u8QMUJ9UhHy91slKdXm AoaxZVKoaUEcm5c/ZIDidGKipd75hrwjT2ZHtR1NmP+Pu/dZGHfP6BY5XFtKhTwRCuAK aEPnB7rTf38kNAFbh6W5LYY7darfgrU/Ee5j6+snT7VFDM6kp2jZhg9zbEtyfKr7MiLk FXpw== X-Gm-Message-State: AGi0PuYo9EkxN0yvTSXCv850vsljSim6MrqCyt9B9aAahKQy7gg9VWVo TU90LziHUOWf7upkwJq+y9wxMa9k0HV0sm8MhRru3Yfm X-Google-Smtp-Source: APiQypLJMiaqGj+7qIAMhgVP+kbVxz+0opJdaEWy7Jr+MR71AWLY7FW/7bJJWrMqDo3pVZwGE3mOBPRm7zK+ge6fa8g= X-Received: by 2002:a17:906:d8c1:: with SMTP id re1mr16655878ejb.184.1589384131852; Wed, 13 May 2020 08:35:31 -0700 (PDT) MIME-Version: 1.0 References: <1486835767.11198.1589286441675.JavaMail.zimbra@efficios.com> In-Reply-To: Date: Wed, 13 May 2020 11:34:55 -0400 Message-ID: To: Genevieve Bastien Cc: lttng-dev Subject: Re: [lttng-dev] Correctly using callstack-user context X-BeenThere: lttng-dev@lists.lttng.org X-Mailman-Version: 2.1.31 Precedence: list List-Id: LTTng development list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: =?utf-8?q?Christophe_B=C3=A9dard_via_lttng-dev?= Reply-To: =?UTF-8?Q?Christophe_B=C3=A9dard?= Content-Type: multipart/mixed; boundary="===============3767090567196571696==" Errors-To: lttng-dev-bounces@lists.lttng.org Sender: "lttng-dev" Message-ID: <20200513153455.QVzuGmn1nZf0NeHFlq2nMT3GhbS_xnKIadBxiBRALOg@z> --===============3767090567196571696== Content-Type: multipart/alternative; boundary="000000000000973f0b05a58954e7" --000000000000973f0b05a58954e7 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Wed, 13 May 2020 at 10:18, Genevieve Bastien via lttng-dev < lttng-dev@lists.lttng.org> wrote: > We had a very very experimental branch with it, using backtrace first, > then unwind. But it is not suggested, not performant. It's far from the > correct desired implementation, for which Mathieu could give more details= . > > It works, but not to be used in production. Students have used it in the > lab for some specific use case prototyping. I won't share the branch here= , > but if you wish to try, let me know. > > Genevi=C3=A8ve > Sure, I'd be interested! --000000000000973f0b05a58954e7 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

On Wed, 13 May 2020 at 10:18, Genevieve Bastien via l= ttng-dev <lttng-dev@lists.lttng.org> wrote:

We had a very very experimental branch with it, using backtrace first, then unwind. But it is not suggested, not performant. It's far from the correct desired implementation, for which Mathieu could give more details.

It works, but not to be used in production. Students have used it in the lab for some specific use case prototyping. I won't share the branch here, but if you wish to try, let me know.

Genevi=C3=A8ve

Sure, I'd be intereste= d!
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