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=-14.4 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT,USER_IN_DEF_DKIM_WL 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 6E06FC4363C for ; Mon, 21 Sep 2020 19:53:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 250762193E for ; Mon, 21 Sep 2020 19:53:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="V3cX9kBm" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727361AbgIUTxy (ORCPT ); Mon, 21 Sep 2020 15:53:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35144 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727197AbgIUTxx (ORCPT ); Mon, 21 Sep 2020 15:53:53 -0400 Received: from mail-qk1-x749.google.com (mail-qk1-x749.google.com [IPv6:2607:f8b0:4864:20::749]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9DF67C061755 for ; Mon, 21 Sep 2020 12:53:53 -0700 (PDT) Received: by mail-qk1-x749.google.com with SMTP id h191so11874663qke.1 for ; Mon, 21 Sep 2020 12:53:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=sender:date:message-id:mime-version:subject:from:to:cc; bh=QYDxpFkd6x3hO4KFD3r6MMj2VtZkn9zakZWkjUqeaPk=; b=V3cX9kBmIPV40AkjswH30h1iGFKC9m6QKKgsN1ByRO6AhpOJErPAx8yYNAtL2WWA3J 7RxLnxAvinE9H3wbgRMxI9BB56GXC4srNA9dwsMmDojUoXRz7HuwNSPLNGsVFoAmR+Lb 9o2IYtipOBUD4xdhmy8BwGp2DvLVzQ2RzV8roZHFq1IlFLYiyRd2caBHaQzDpgYGwNRE cK/nvK+QvWIHCvWFnfwtvYEj/M1ZbLpWyGmV/DCdFAtMQ4uQ2JNGp5uB1WqKKvgPNtEA kcQP/YMEyzG/E9zX0IFfKqLV5ZpkllPSnHcBHt3w4z1flLjoPkEQFpBVtqg3AOz89y+W EUzA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:message-id:mime-version:subject:from :to:cc; bh=QYDxpFkd6x3hO4KFD3r6MMj2VtZkn9zakZWkjUqeaPk=; b=XhZrN4vpuqzI/AOsnZ3tglFANAFPcsBt1AaUUngYl5jj+lctxKQCoSrPAr2dmjGkbA IQZkevQoEUhgh9e0w6e/jTdpErryYhq8Q0c5vsP/zy6VhkiNDJAiY1clKfjIHm07SvLM aL8ayfydsEg/2zhKDEsCSitvFfqpi6lvZw8M+YZ288zkJp5A3oH5y7BEmVAU2lH+dOCF QIuw4NaKryfTm3DQ1o/wdT9Twp8QkRUBBjZ0+ws6Ez13OIF11yUqTflWRN+eLqHYcsFI 8rNsd3GMKZ6N8h+gDalvskUlbOPZJ987KDT9PzAYl9a4Tbg3TbO1Mo/O7/8ol8yKYl81 NYIw== X-Gm-Message-State: AOAM533khDxiCEQkkTTVSHFCONx9xphgNXGojcNZtL+lgh5Q0RvQ01n2 QnbL5ZYPqAtzFWk3mi403pOJQFMm4Hs= X-Google-Smtp-Source: ABdhPJybmAqVngr22DJTIxBbeUfqxrIW7MhO+/LEraSnfLldS5+AGlQ8qIatzAtHqpfTLVP6vKlYpHaR9mk= Sender: "haoluo via sendgmr" X-Received: from haoluo.svl.corp.google.com ([2620:15c:2cd:202:f693:9fff:fef4:e444]) (user=haoluo job=sendgmr) by 2002:ad4:42b3:: with SMTP id e19mr1898822qvr.6.1600718032730; Mon, 21 Sep 2020 12:53:52 -0700 (PDT) Date: Mon, 21 Sep 2020 12:53:08 -0700 Message-Id: <20200921195310.3070085-1-haoluo@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.28.0.681.g6f77f65b4e-goog Subject: [PATCH v2 0/2] pahole: Make encoding percpu vars into BTF optional. From: Hao Luo To: Arnaldo Carvalho de Melo Cc: Andrii Nakryiko , Alexei Starovoitov , daniel@iogearbox.net, dwarves@vger.kernel.org, yhs@fb.com, Hao Luo Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: dwarves@vger.kernel.org v1 -> v2: - Use opt-out instead of opt-in. Rename the flag name to '--skip_encoding_btf_vars' Previous commit f3d9054ba8ff ("btf_encoder: Teach pahole to store percpu variables in vmlinux BTF.") introduced a feature in btf_encoder that encodes global symbols in BTF. However, this feature is not protected by any flag. In order to avoid surprises after Pahole v1.18 rolls out, add a flag to toggle this feature off. Also as a refactor, introduce '--btf_encode_force' to replace the old '--force' and '-j' option that is used to forcefully emit BTF. Hao Luo (2): btf_encoder: Allow disabling BTF var encoding. btf_encoder: Introduce option '--btf_encode_force' btf_encoder.c | 5 ++++- btf_encoder.h | 3 ++- pahole.c | 22 +++++++++++++++++----- 3 files changed, 23 insertions(+), 7 deletions(-) -- 2.28.0.681.g6f77f65b4e-goog