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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 75588C43217 for ; Mon, 28 Nov 2022 15:45:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232105AbiK1Pp2 (ORCPT ); Mon, 28 Nov 2022 10:45:28 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52292 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232097AbiK1Pp0 (ORCPT ); Mon, 28 Nov 2022 10:45:26 -0500 Received: from mail-pj1-x1030.google.com (mail-pj1-x1030.google.com [IPv6:2607:f8b0:4864:20::1030]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A0D061DA7A for ; Mon, 28 Nov 2022 07:45:25 -0800 (PST) Received: by mail-pj1-x1030.google.com with SMTP id a22-20020a17090a6d9600b0021896eb5554so14410237pjk.1 for ; Mon, 28 Nov 2022 07:45:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=FQ6qMqhLPYmOksP+CNivCn9CufwufiSEDlOoPaJxGkY=; b=ELsZ9KVmQrQ9u5e5iCNQJs/dW4r1dpDN+HoIIyBQgS0fgBM/07KBEKTgu+CmmuTLYm +bYeBfUqV16S906fSz0D7rC2x2ug420Azz4cSZ3fm6vP+ksvE1r+2ZxgNPIFvg1io68H Ae0NBuafKvNO3bVoPMGXl5ERQsUeGEmCzhUQ3f9foacr/fUdJw77JBC/cfD3ljmJXl1o C18DLedoBUC/rlB7ta+vZXvjsMxiZ/kjpfvwHF3No0QhvjWfl8GjqpHG55ZWAjRpeMfa scnwV6WKeiElIU3KKLI9baq6cH2W2QLCd0hr17L0HAmiDv7nf7fmIyvDEZot9idfi3hk s/sQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=FQ6qMqhLPYmOksP+CNivCn9CufwufiSEDlOoPaJxGkY=; b=KPEbUvFrmaMaxjjtK4Xg2jmhSTs6btP81aY2HUT4YVPOdD3EqzMw9DciRSuPJlvJM5 xRiB53s7BUpVuzmFUzVn1IFxm87hftDzUNbnan3ZVKLLxgyTXbgHkh8Nnqkw0147ryNA JlSWChS99iCOnctMknakeHtHsYXswBYl5Wry2RQcWkpUPpbUinJByL8obv1BsZP2KeXh u99k81FWdy81TxVOwfTLvGvSSEif/MaagZeOfp5b2h/Hld5bU7s5BFCDynhYbXvn2Uio tZvQCmZkHzbcQt+FOe+gdy75CSe4IFF/1zApEfJO4mCE8MTNPygKIHmpYVpJkhI490XC L77w== X-Gm-Message-State: ANoB5pkGwWumdR9WzjP0D0UT/CR3V8gwVsAdgZzoGj7dsd/LY0482Csg 2180XLQ7yjVMYwtAoVGvX+k= X-Google-Smtp-Source: AA0mqf6Se+XAK16ioF43g+Bg1u3Q35NXI2DREMP4L6ERe9Ftma1p0a59cHHO7cIvxwiSdDHiwjqkig== X-Received: by 2002:a17:902:7482:b0:189:855c:eb56 with SMTP id h2-20020a170902748200b00189855ceb56mr3669644pll.54.1669650325145; Mon, 28 Nov 2022 07:45:25 -0800 (PST) Received: from localhost.localdomain ([112.2.230.25]) by smtp.gmail.com with ESMTPSA id b28-20020a630c1c000000b0045dc85c4a5fsm7025520pgl.44.2022.11.28.07.45.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 28 Nov 2022 07:45:24 -0800 (PST) From: Song Shuai X-Google-Original-From: Song Shuai To: guoren@kernel.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, apatel@ventanamicro.com, heiko@sntech.de, atishp@atishpatra.org, conor.dooley@microchip.com, alexandre.ghiti@canonical.com, anshuman.khandual@arm.com, juerg.haefliger@canonical.com, wangkefeng.wang@huawei.com Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Song Shuai Subject: [PATCH v2] riscv/ftrace: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY Date: Mon, 28 Nov 2022 23:45:06 +0800 Message-Id: <20221128154506.2691-1-suagrfillet@gmail.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Song Shuai 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 Signed-off-by: Song Shuai Tested-by: Guo Ren --- arch/riscv/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index fa78595a6089..afc520a45ded 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -277,6 +277,7 @@ config ARCH_RV64I select HAVE_DYNAMIC_FTRACE if !XIP_KERNEL && MMU && $(cc-option,-fpatchable-function-entry=8) select HAVE_DYNAMIC_FTRACE_WITH_REGS if HAVE_DYNAMIC_FTRACE select HAVE_FTRACE_MCOUNT_RECORD if !XIP_KERNEL + select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE select HAVE_FUNCTION_GRAPH_TRACER select HAVE_FUNCTION_TRACER if !XIP_KERNEL select SWIOTLB if MMU -- 2.34.1