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=-24.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 53D89C433E2 for ; Thu, 25 Mar 2021 22:39:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 23386619FF for ; Thu, 25 Mar 2021 22:39:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231368AbhCYWjH (ORCPT ); Thu, 25 Mar 2021 18:39:07 -0400 Received: from mail.kernel.org ([198.145.29.99]:49226 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231318AbhCYWid (ORCPT ); Thu, 25 Mar 2021 18:38:33 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 6F90961A38; Thu, 25 Mar 2021 22:38:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1616711913; bh=4GybQa7x965w/lvJpnsuebjZBuJAklLkJS0kqW10SlI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AQI76ZNAc2kYisTlQkA41/g1kQ67/tVaO15bbvMmK88fkN0onr1G+Ko7wyP6xc0I+ 6rClyDTLwT4L5Z4Rhr2wrCcJUDP5BbVPFEK+ph5So7pksluRk4ySFgHiPvBfQjB1ol fMx3ZURFNR+HIl/jIaOGQIs38ZwQ8OupO3shL4zZnuWCRuvp/ts5HpaTXBtgee94rg QCkviWbbq4M2Y+gIWqb7JnakATMHN3G2ybTG1/Eh3IEkR0pHwO6SkKZBoK0/VNqPwf 7sIWLJf0PAdRi+PTAgkl2koj6ruDAp9NEzK+ZkPLSjaTBEgBRScQJLQKpiZvHKitpR oxI3MhBoZE8MA== From: Nathan Chancellor To: Palmer Dabbelt , Paul Walmsley , Albert Ou Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com, Nathan Chancellor , kernel test robot Subject: [PATCH 3/3] riscv: Select HAVE_DYNAMIC_FTRACE when -fpatchable-function-entry is available Date: Thu, 25 Mar 2021 15:38:07 -0700 Message-Id: <20210325223807.2423265-4-nathan@kernel.org> X-Mailer: git-send-email 2.31.0 In-Reply-To: <20210325223807.2423265-1-nathan@kernel.org> References: <20210325223807.2423265-1-nathan@kernel.org> MIME-Version: 1.0 X-Patchwork-Bot: notify Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- arch/riscv/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 87d7b52f278f..ba1d07640b66 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 -- 2.31.0