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 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 A17F7CDE026 for ; Thu, 26 Sep 2024 17:05:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To: Content-Transfer-Encoding:Content-Type:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=jsZ8U+DvOxNOvz8lok03ksjjCOzF14isUPXGSQv8ijM=; b=07q67RKTRyjPiw+d2hgWzZ/hXU b/8VA7REKwuXUzBeh9FSAqzHJpcr+1ZD56n05d4HTg1eEiy1H4STRxfM0nAlx9eI7n15iSSD8BrNh PYhPV9hgIwNOysXsbk/IkGSXlOWofaYG+A54H393nxP63+gZTmz/UIWEpRtuJO3LHLPTocsZj8hLj PBHZJH61Nfxt900N5BkoHJyzoD5TA4SFwLTyJfXs+Y3DvY9bIDuxVoLTXnFXBx0nhPqGgAKTQDEaw KDAUMz4IPAkKP2i4JKWmBOFVMH9xGM1GfmY55tN8UQk4PGmbfPylEwBgvK7oD7wB66FKfQtQMmtrD rY1npbEg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1strvl-00000008yPH-1puu; Thu, 26 Sep 2024 17:05:29 +0000 Received: from nyc.source.kernel.org ([2604:1380:45d1:ec00::3]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1struZ-00000008yGx-3cgB for linux-arm-kernel@lists.infradead.org; Thu, 26 Sep 2024 17:04:17 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id A603BA4322A; Thu, 26 Sep 2024 17:04:06 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 56EFFC4CEC5; Thu, 26 Sep 2024 17:04:13 +0000 (UTC) Date: Thu, 26 Sep 2024 18:04:10 +0100 From: Catalin Marinas To: Anand Moon Cc: Will Deacon , Sebastian Andrzej Siewior , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v1] arm64: defconfig: Enable CONFIG_EXPERT Message-ID: References: <20240926145817.1124-1-linux.amoon@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20240926145817.1124-1-linux.amoon@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240926_100415_985317_01741D97 X-CRM114-Status: GOOD ( 15.34 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Sep 26, 2024 at 08:28:16PM +0530, Anand Moon wrote: > Enable CONFIG_EXPERT to allow the configuration of PREEMPT_RT. > > PREEMPT_RT depends on the following configuration: > > CONFIG_PREEMPT_RT > bool “Fully Preemptible Kernel (Real-Time)” > depends on CONFIG_EXPERT && ARCH_SUPPORTS_RT > select PREEMPTION > > Cc: Sebastian Andrzej Siewior > Signed-off-by: Anand Moon > --- > arch/arm64/configs/defconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig > index 5fdbfea7a5b2..3d9d29eb0c13 100644 > --- a/arch/arm64/configs/defconfig > +++ b/arch/arm64/configs/defconfig > @@ -28,6 +28,7 @@ CONFIG_CGROUP_BPF=y > CONFIG_USER_NS=y > CONFIG_SCHED_AUTOGROUP=y > CONFIG_BLK_DEV_INITRD=y > +CONFIG_EXPERT=y > CONFIG_KALLSYMS_ALL=y > CONFIG_PROFILING=y > CONFIG_KEXEC=y EXPERT is not really for defconfig (at least not for the arm64 one). Distros can (and do) enable it if they want. Also PREEMPT_RT is default off, so you'd have to enable it in your config anyway, not sure what this patch helps with. -- Catalin