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 7B03AC88E72 for ; Thu, 17 Sep 2026 18:12:05 +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:In-Reply-To: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=Z2wKuQ2tPoT0UxstMlwIiiYDFlZ4SSSGJtvMWYd1tUk=; b=lVv8HHxcrHQtwC rk8BaMoalrOA1jRq492Dc7a+dvfwTevnTwu8RQzgvlTNel85z40ha9RS/hd6BX4V787sJvzbDZ8Gf xRlql38sSKsWTEoQYPER0k148pAmUim+jBh3MlNH/3wqZTKYFGlUqzX6QKztL04CSDVKwVRivHTsP 4oQzMMXQsIVZUPpoepNDD++7jb1Qq43pIe0QG5moAngSsR3EZOjEM9zS/d6tBthlbX3ZaN9GTVSHa IwoxqptoFnd4vTlftOYo/YDMX4A9tKccyvx7xMW53W69F5LEnP+nHhmpjRLOTx9J89CqIl382yKUb RAauhF3tMreQgchtF+WA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x7GaQ-0000000CBRF-1zqL; Thu, 17 Sep 2026 18:11:54 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1x7GaE-0000000CBN7-2dDB; Thu, 17 Sep 2026 18:11:42 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 36AED41317; Thu, 17 Sep 2026 18:11:42 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 06FBB1F0089A; Thu, 17 Sep 2026 18:11:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789668702; bh=KivQhtsO8a4itzEQWZwvcU0vaLM0EC3b+zcpo+5cxFA=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=Yd1VSsrews+KOBN0uKtnIdnZ1G8CVssbrPM08Gw35Vri29zJuBn5FKU3BGM09J/YT ez6WOpuKLqbRXy2mEU+yrWFZWOdLsOGEJHcrg46gtRII0MYNvTU3ZpBSIkgm5fqeG7 DtoigLn0myERRymKYpPutd36aESFAKs1EljepOhcZI3BUu+T65G/uepm2XbWi722Pe N0THyeTnDWjGILEUOpLpk+HIUgicl8OAvLhrVHsTfJjVAK9blGwpgqF4FxzR4jEvX6 KfzLy+gnOGm8DLjpR827SCTwuDWK1Y8RXPONMg1MDxP5t06lQbpC94vGwhZr8tuY/W zK0rO7XmGemMg== Date: Thu, 17 Sep 2026 11:11:41 -0700 From: Kees Cook To: "Lorenzo Stoakes (ARM)" Cc: Linus Torvalds , Nathan Chancellor , Nicolas Schier , Nick Desaulniers , Bill Wendling , Justin Stitt , Masahiro Yamada , Alexey Gladkov , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Arnd Bergmann , Catalin Marinas , Will Deacon , Mark Rutland , Ard Biesheuvel , Ilias Apalodimas , Josh Poimboeuf , Peter Zijlstra , Miguel Ojeda , Boqun Feng , Gary Guo , =?iso-8859-1?Q?Bj=F6rn?= Roy Baron , Benno Lossin , Andreas Hindborg , Alice Ryhl , Trevor Gross , Danilo Krummrich , Daniel Almeida , Tamir Duberstein , Alexandre Courbot , Onur =?iso-8859-1?Q?=D6zkan?= , Jonathan Corbet , Randy Dunlap , "Gustavo A. R. Silva" , linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, linux-riscv@lists.infradead.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-efi@vger.kernel.org, rust-for-linux@vger.kernel.org, linux-doc@vger.kernel.org, Jens Axboe , linux-hardening@vger.kernel.org Subject: Re: [PATCH v3 08/20] kbuild: cache list, composite object state per object Message-ID: <202609171110.438BC7477A@keescook> References: <20260917-build-speedup-v3-0-9ecf4163ff36@kernel.org> <20260917-build-speedup-v3-8-9ecf4163ff36@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20260917-build-speedup-v3-8-9ecf4163ff36@kernel.org> 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On Thu, Sep 17, 2026 at 05:06:18PM +0100, Lorenzo Stoakes (ARM) wrote: > Fix the issue by caching this data and looking it up instead of getting it > over and over again. Nit: I would describe this as "calculate these once". It _is_ caching, but I think with Makefiles there is an implication the "caching" means "write to disk". But maybe that's just me. > This has a particularly large impact on allmodconfig builds. Love it. :) Reviewed-by: Kees Cook -- Kees Cook _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv