From patchwork Thu Jun 13 07:11:13 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Chiu X-Patchwork-Id: 13696258 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A8665C27C4F for ; Thu, 13 Jun 2024 07:33:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References:Message-Id :MIME-Version:Subject:Date:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=0OZL4b+DKqqCKPLBx6y+VvjNyUInX/0Ji6F2A/UGjMU=; b=jUP2jnhc9GM0Om nyKG/FVSpLEmYu0SLIpQSvB0blAEDlxN6QkSDSJ2FpvZ+53r0sk67Y+8wJQGMs045vnPkBDhkcWdc lM2egMkHxJAOxGziJX7ouniM5ZEX7ivvwJ11JmyfP1L+LNIq86LFXE6PtJVXcn+4GZUxbInxqtTQr SwrAzBm11SWQzV3trOX1rkFSNkaAg0VpWKU6JbJauT0fYlqnKvpSJKvrIKHKikocp7e7j8x5PNV92 rCLWJ7sdj6xDhwaXA1lQf3gUqLiLmC2YT29SIygJsgLHvMBvlRc0q7+cgcrB6HlejKPJ3v581NzDY 0QqAHZXq6ED9p9dcC1Dg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sHexQ-0000000FUg5-2i55; Thu, 13 Jun 2024 07:33:16 +0000 Received: from mail-pf1-x42d.google.com ([2607:f8b0:4864:20::42d]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sHexN-0000000FUcl-2TNy for linux-riscv@lists.infradead.org; Thu, 13 Jun 2024 07:33:15 +0000 Received: by mail-pf1-x42d.google.com with SMTP id d2e1a72fcca58-704313fa830so513751b3a.3 for ; Thu, 13 Jun 2024 00:33:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; t=1718263992; x=1718868792; darn=lists.infradead.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=RlJIkXaRaXYEOo0FtAy4w5B+d0jhj99dMDrjOpWfyi4=; b=XtgteywTdO3XQELyIBELowQHcElUaMuq+jlgevkqoqwhIT18AkXgruu3wim0jLDDAL tit//EXYFkZVgCFyK2HCXvY1bqDVSI+1zRlE+LTr5y3YL0uPSge8J9tZzqlLJfsD6Uf6 zLmvCAHcXmuYPxUggFPhUxHMP/2LV++7ZIWFz5l1Ht3jqmyxDH/bwT7M96iZ3DMoR9T9 6Gmo26C09cAlCho96bq3fD3LYYiDcQPPjmFM/9h663xFzTkNhfmN+ilVKm2uwv+jMJJd A+LcjBO0WQNvKet4yR/GnN7s6yGvADQ+5IWYEqhkBXsUxINUMXQYolt1eWBK8gv2Hk+X XgJQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718263992; x=1718868792; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=RlJIkXaRaXYEOo0FtAy4w5B+d0jhj99dMDrjOpWfyi4=; b=iYGQSn2vDAWKB7QmFPJKb8t/x63rllvEb/XOIbgBpNfzHodFcDJH5CqR2RVVz0scyZ kwy9Wk+2+Qt1v3AJxFlH96Wb1PxsP4b3U/Tw7Yp9RMRCNAfOd3EjnPZCTB8WZilZGNrd dtflOa8aMyqgENlwQBzysSvn6NVT2oxxAV5n5j6UPy6q7Y7KWbfFsmKQCK/b676ckufM FwA31ZnTROyEB4+Qv1Qd0fYtc8Wqdi0kqlCQm8z9h19u2qZvz9ZbbViNrkrqMy23MZY/ +/qh8TDHE9lGGzLMHhJxFEhglUUOKc4XVAV6J9frQN1Cm5uvHLp/yEnWusOxFaBF5AMO TxeA== X-Forwarded-Encrypted: i=1; AJvYcCVwZr6cK+xm9flH6gU5/j+xnYetpoD/zmK8zFTrtoIHGUVZMhUYhmOhwfW+t4giMcRKj4iWfGstu8TOGvAtQ62SwXkAb2mAbTThh4+DtgvE X-Gm-Message-State: AOJu0YzQqrHVhALwz5SdukN8lv5q9dR26kMeIjebRTrzvZOSJ382/dT+ ANSNxtKCy/wdn0nMeoWwsWuL9mNqmAIjK4JkLroXAkEu2Q+8fHudC3gVXYia+dI= X-Google-Smtp-Source: AGHT+IEyM0ONI7ICTx6DjS1SeAdMKnjMDIyvhgY/AOB26Jk18oYzU1QW75t2bRm257+1EVhnYwVCTA== X-Received: by 2002:a05:6a20:3d88:b0:1b2:a889:f7da with SMTP id adf61e73a8af0-1b8a9c887fdmr4702279637.55.1718263991983; Thu, 13 Jun 2024 00:33:11 -0700 (PDT) Received: from [127.0.1.1] (59-124-168-89.hinet-ip.hinet.net. [59.124.168.89]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-705cc78a1a0sm730028b3a.0.2024.06.13.00.33.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Jun 2024 00:33:11 -0700 (PDT) From: Andy Chiu Date: Thu, 13 Jun 2024 15:11:13 +0800 Subject: [PATCH 8/8] riscv: ftrace: support PREEMPT MIME-Version: 1.0 Message-Id: <20240613-dev-andyc-dyn-ftrace-v4-v1-8-1a538e12c01e@sifive.com> References: <20240613-dev-andyc-dyn-ftrace-v4-v1-0-1a538e12c01e@sifive.com> In-Reply-To: <20240613-dev-andyc-dyn-ftrace-v4-v1-0-1a538e12c01e@sifive.com> To: Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Zong Li , Steven Rostedt , Masami Hiramatsu , Mark Rutland , Nathan Chancellor , Nick Desaulniers , Bill Wendling , Justin Stitt , Puranjay Mohan Cc: Palmer Dabbelt , linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, llvm@lists.linux.dev, Andy Chiu X-Mailer: b4 0.12.4 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240613_003314_100498_785D2DAE X-CRM114-Status: UNSURE ( 9.86 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Now, we can safely enable dynamic ftrace with kernel preemption. Signed-off-by: Andy Chiu --- arch/riscv/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 80b8d48e1e46..c1493ee1b8cd 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -133,7 +133,7 @@ config RISCV select HAVE_FTRACE_MCOUNT_RECORD if !XIP_KERNEL select HAVE_FUNCTION_GRAPH_TRACER select HAVE_FUNCTION_GRAPH_RETVAL if HAVE_FUNCTION_GRAPH_TRACER - select HAVE_FUNCTION_TRACER if !XIP_KERNEL && !PREEMPTION + select HAVE_FUNCTION_TRACER if !XIP_KERNEL select HAVE_EBPF_JIT if MMU select HAVE_GUP_FAST if MMU select HAVE_FUNCTION_ARG_ACCESS_API