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=-24.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, 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,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 CB9F8C433ED for ; Mon, 17 May 2021 14:25:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B11E5614A7 for ; Mon, 17 May 2021 14:25:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239606AbhEQO1B (ORCPT ); Mon, 17 May 2021 10:27:01 -0400 Received: from mail.kernel.org ([198.145.29.99]:37616 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237496AbhEQOXQ (ORCPT ); Mon, 17 May 2021 10:23:16 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id F1671613D9; Mon, 17 May 2021 14:12:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1621260741; bh=aNYXZWoSOlAOk+ZWWwQMbgpvI5lokByWOB6Vs2dTSIM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jFdLHy1KkuL6kjRF0zfezafBAR5uro/KNa73PbV8hmC+UkS5uMgUqijScJAm7dT5T p/Z04FgdIR640VFiAKXZSJ+jxOyNvJSnGH1ENWljmVlrvK/V2hZVUMtGyQBjukJpKC A22abk4IXgKTDfQT1RkBoeDtTlvKUhNuhalnz+Ew= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, kernel test robot , Nathan Chancellor , Fangrui Song , Palmer Dabbelt , Sasha Levin Subject: [PATCH 5.12 184/363] riscv: Select HAVE_DYNAMIC_FTRACE when -fpatchable-function-entry is available Date: Mon, 17 May 2021 16:00:50 +0200 Message-Id: <20210517140308.809286639@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210517140302.508966430@linuxfoundation.org> References: <20210517140302.508966430@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Nathan Chancellor [ Upstream commit adebc8817b5c975d598ac379bbdf67a7a5186ade ] clang prior to 13.0.0 does not support -fpatchable-function-entry for RISC-V. clang: error: unsupported option '-fpatchable-function-entry=8' for target 'riscv64-unknown-linux-gnu' To avoid this error, only select HAVE_DYNAMIC_FTRACE when this option is not available. Fixes: afc76b8b8011 ("riscv: Using PATCHABLE_FUNCTION_ENTRY instead of MCOUNT") Link: https://github.com/ClangBuiltLinux/linux/issues/1268 Reported-by: kernel test robot Signed-off-by: Nathan Chancellor Reviewed-by: Fangrui Song Signed-off-by: Palmer Dabbelt Signed-off-by: Sasha Levin --- arch/riscv/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 4515a10c5d22..d9522fc35ca5 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -227,7 +227,7 @@ config ARCH_RV64I bool "RV64I" select 64BIT select ARCH_SUPPORTS_INT128 if CC_HAS_INT128 && GCC_VERSION >= 50000 - select HAVE_DYNAMIC_FTRACE if MMU + select HAVE_DYNAMIC_FTRACE if MMU && $(cc-option,-fpatchable-function-entry=8) select HAVE_DYNAMIC_FTRACE_WITH_REGS if HAVE_DYNAMIC_FTRACE select HAVE_FTRACE_MCOUNT_RECORD select HAVE_FUNCTION_GRAPH_TRACER -- 2.30.2