From patchwork Fri Mar 24 03:33:39 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Song Shuai X-Patchwork-Id: 13186385 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1EB3CC6FD20 for ; Fri, 24 Mar 2023 03:34:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231344AbjCXDeF (ORCPT ); Thu, 23 Mar 2023 23:34:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51710 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230329AbjCXDeA (ORCPT ); Thu, 23 Mar 2023 23:34:00 -0400 Received: from mail-pl1-x636.google.com (mail-pl1-x636.google.com [IPv6:2607:f8b0:4864:20::636]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CCBD612D; Thu, 23 Mar 2023 20:33:56 -0700 (PDT) Received: by mail-pl1-x636.google.com with SMTP id c18so685765ple.11; Thu, 23 Mar 2023 20:33:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; t=1679628836; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=SuNyNXqOE8MJi82Ss2jr4+2w7Bbh8bl4PPMM+ipEJZg=; b=QwKiPoPY2sBwX1qMThbCtcIkli32kb6pTnveqLIR6/FUR0CnPvXMpm6UQcwe8zw1iO tnNYj38tfYqF2OiaVC+QiDTBesRwi98uV3TOpG97R9vbUvGQ3XA9dxnSuWiyeNoHLDJV sSZ1ROXCtKhrzQvdQgjYOPmg8bLYwN8lPQPdXdVXubE1UO49L/uhwfp+YInwbJ2ta4Mv fCG+4HJt79P1HIo5PUqOBBUs/VHhzPwXO4lZlo1i6yfvh+YEGftqNROdR2RFy7l3S8qs ex+z565PIKVV/ObuQXItC/D5mAiO9JBuJK3nsQDDi7zpNcJI7vaRV4uNy4lrG3t04Qm9 ErEA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1679628836; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=SuNyNXqOE8MJi82Ss2jr4+2w7Bbh8bl4PPMM+ipEJZg=; b=dPZS7/uDOmmsPfTvC7nq5Uh6IBoEsSEUXSWMA5J2JEQYgs2WNyVEFvFeZuI72NG/Tk OPqYjoFZma9wPSh7xwvFpRwIRsEDW3rNUqkFMSXeJ3sryapKuD0dcA9pNRuv/e2shGKm +XRocuOHOiefDoMZeKocyu4XflmsNDlGx/8VVH4/RRoncyOqGjQy6qnjiI4rgZqX8kdR XZRyY8OhSgYq0p+uyyfM53PIt8EkXj4mN+IUVED6yuDYkaf5MOeRwIdrUgjyFYik6ElS l9EAHSFXQADkrLgQXkhqie8ZilnUSrQNQmTUEiIN8yGXBuyu3NC0p6AFJ78AdkBBzS/Y vUMA== X-Gm-Message-State: AAQBX9dJvcU0RLcuxl90bp4xVZheG23twB2bFaCrY4TVaFqL1j+aRWsw Ut+EQACRwZrlYpCWAfxl1NQ= X-Google-Smtp-Source: AKy350ZTjVR39b2Jkhn03bjHsLNpTlLtmn8tFDvpX8T0uDzXVOdf1btaAfwE3KcJr+IRUCEUIuI9Sg== X-Received: by 2002:a17:902:e3cb:b0:19c:a866:6a76 with SMTP id r11-20020a170902e3cb00b0019ca8666a76mr908258ple.42.1679628836270; Thu, 23 Mar 2023 20:33:56 -0700 (PDT) Received: from localhost.localdomain ([221.226.144.218]) by smtp.gmail.com with ESMTPSA id h13-20020a170902f7cd00b0019d1f42b00csm13014101plw.17.2023.03.23.20.33.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Mar 2023 20:33:55 -0700 (PDT) From: Song Shuai To: paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, rostedt@goodmis.org, mhiramat@kernel.org, mark.rutland@arm.com, guoren@kernel.org, e.shatokhin@yadro.com Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, Song Shuai Subject: [PATCH V8 1/4] riscv: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY Date: Fri, 24 Mar 2023 11:33:39 +0800 Message-Id: <20230324033342.3177979-2-suagrfillet@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20230324033342.3177979-1-suagrfillet@gmail.com> References: <20230324033342.3177979-1-suagrfillet@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-trace-kernel@vger.kernel.org In RISC-V, -fpatchable-function-entry option is used to support dynamic ftrace in this commit afc76b8b8011 ("riscv: Using PATCHABLE_FUNCTION_ENTRY instead of MCOUNT"). So recordmcount don't have to be called to create the __mcount_loc section before the vmlinux linking. Here selects FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY to tell Makefile not to run recordmcount. Link: https://lore.kernel.org/linux-riscv/CAAYs2=j3Eak9vU6xbAw0zPuoh00rh8v5C2U3fePkokZFibWs2g@mail.gmail.com/T/#t Link: https://lore.kernel.org/linux-riscv/Y4jtfrJt+%2FQ5nMOz@spud/ Signed-off-by: Song Shuai Tested-by: Guo Ren Signed-off-by: Guo Ren Acked-by: Björn Töpel --- arch/riscv/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index c5e42cc37604..93d4817c9d73 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -56,6 +56,7 @@ config RISCV select COMMON_CLK select CPU_PM if CPU_IDLE select EDAC_SUPPORT + select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE select GENERIC_ARCH_TOPOLOGY select GENERIC_ATOMIC64 if !64BIT select GENERIC_CLOCKEVENTS_BROADCAST if SMP