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=-20.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 DE8F9C433E0 for ; Wed, 3 Mar 2021 14:06:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9CCC064E68 for ; Wed, 3 Mar 2021 14:06:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1359247AbhCCOE6 (ORCPT ); Wed, 3 Mar 2021 09:04:58 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37798 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1842916AbhCCKW3 (ORCPT ); Wed, 3 Mar 2021 05:22:29 -0500 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 28CD6C061A28; Wed, 3 Mar 2021 00:45:34 -0800 (PST) Date: Wed, 03 Mar 2021 08:45:31 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1614761132; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=yb+bqoD+X245ondH2TPCv3xBe4JKVU//+6GIBcRKW1A=; b=pWXvAseRzGVX72p8yvQueg6xNSTTCtQ2S19X83jBdVBSk0Hs36epxVcGodetzCjncsSTmu ABiMwmXFSAGfMWYETmqJxpwN/9kxEVNqIISuw42hGACPvSR9VsNEtGOZgJshII+9GoH8gA 14F/6PBaKVLy2qpnRnFcr9XVTSdjpIUgZqhf5Y/xr9IbKrkEBtZZd+x3ML9jTRCgcGG5Qj XAaOrrPvFtTjZxREqq4BNsRbHDKLAJRs03zKK+KYYwDKQCvWpRwbL6xGGuDMfD5AOQC5v6 4CMgjZpuDZQ3MGkDFy/D1lBm6rp5VtV2EPDvh3dKGxixWNNy7mIwGpXJuRzHgA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1614761132; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=yb+bqoD+X245ondH2TPCv3xBe4JKVU//+6GIBcRKW1A=; b=AW8pyjDSRUj1jr5rk/JrFp3XBrMo1ANJV3D1IyGMJ9luFRmm5iMeuVahW0QhbEmTLZIb7U Id20i7fgm4wHWkBw== From: "tip-bot2 for Peter Zijlstra" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: objtool/core] objtool: Parse options from OBJTOOL_ARGS Cc: Borislav Petkov , "Peter Zijlstra (Intel)" , Josh Poimboeuf , x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20210226110004.252553847@infradead.org> References: <20210226110004.252553847@infradead.org> MIME-Version: 1.0 Message-ID: <161476113169.20312.14290136035364654285.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The following commit has been merged into the objtool/core branch of tip: Commit-ID: b52eb21aeca75790869c26b91b1d7b80b3946430 Gitweb: https://git.kernel.org/tip/b52eb21aeca75790869c26b91b1d7b80b3946430 Author: Peter Zijlstra AuthorDate: Fri, 26 Feb 2021 11:32:30 +01:00 Committer: Peter Zijlstra CommitterDate: Wed, 03 Mar 2021 09:38:32 +01:00 objtool: Parse options from OBJTOOL_ARGS Teach objtool to parse options from the OBJTOOL_ARGS environment variable. This enables things like: $ OBJTOOL_ARGS="--backup" make O=defconfig-build/ kernel/ponies.o to obtain both defconfig-build/kernel/ponies.o{,.orig} and easily inspect what objtool actually did. Suggested-by: Borislav Petkov Signed-off-by: Peter Zijlstra (Intel) Acked-by: Josh Poimboeuf Link: https://lkml.kernel.org/r/20210226110004.252553847@infradead.org --- tools/objtool/builtin-check.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/tools/objtool/builtin-check.c b/tools/objtool/builtin-check.c index 0399752..8b38b5d 100644 --- a/tools/objtool/builtin-check.c +++ b/tools/objtool/builtin-check.c @@ -15,6 +15,7 @@ #include #include +#include #include #include @@ -26,6 +27,11 @@ static const char * const check_usage[] = { NULL, }; +static const char * const env_usage[] = { + "OBJTOOL_ARGS=\"\"", + NULL, +}; + const struct option check_options[] = { OPT_BOOLEAN('f', "no-fp", &no_fp, "Skip frame pointer validation"), OPT_BOOLEAN('u', "no-unreachable", &no_unreachable, "Skip 'unreachable instruction' warnings"), @@ -44,6 +50,25 @@ const struct option check_options[] = { int cmd_parse_options(int argc, const char **argv, const char * const usage[]) { + const char *envv[16] = { }; + char *env; + int envc; + + env = getenv("OBJTOOL_ARGS"); + if (env) { + envv[0] = "OBJTOOL_ARGS"; + for (envc = 1; envc < ARRAY_SIZE(envv); ) { + envv[envc++] = env; + env = strchr(env, ' '); + if (!env) + break; + *env = '\0'; + env++; + } + + parse_options(envc, envv, check_options, env_usage, 0); + } + argc = parse_options(argc, argv, check_options, usage, 0); if (argc != 1) usage_with_options(usage, check_options);