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 9097AC4167B for ; Thu, 2 Nov 2023 20:20:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234154AbjKBUU5 (ORCPT ); Thu, 2 Nov 2023 16:20:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59926 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232412AbjKBUUt (ORCPT ); Thu, 2 Nov 2023 16:20:49 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 31E41D6D for ; Thu, 2 Nov 2023 13:20:31 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPS id B03A8C433CD; Thu, 2 Nov 2023 20:20:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1698956430; bh=LJ143qQumSwJ+frQ2lgaKZNiAUVef0ohgDMpkllbi6c=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=sop1YtMvm+UqaKpq81oh8SDoseVahc+Y5vvsVVe+fQcl0QiuMLCeJj5mrAcC3YJ1i UsP6zD+a/6Or5rMI5kWTseDv7lmP91npEuoFZoHyWxNgbujJ7F7oDMJWrSkaUj599d 7C9W1uANcMrrRcsdAkHAjXdDOBPSu/hHIr6TSfkMOK0zPq1KtuAHQmeq2/ZpsIxU6g +EGzHUpSoDhiAyC3UN7NIMQkHqFmMHUPejrCUVUXOUjvBVQC7C/3Yyfr2+iyIPUft5 dRM24b8yDOuzYR7ayMWhIfLUVJnQl2qFzuDZhI55TTEXNs9WMoM/ygoFKNTklLWZuP 4xhJ1695PEq9g== Received: from aws-us-west-2-korg-oddjob-1.ci.codeaurora.org (localhost.localdomain [127.0.0.1]) by aws-us-west-2-korg-oddjob-1.ci.codeaurora.org (Postfix) with ESMTP id 8B38DE00089; Thu, 2 Nov 2023 20:20:30 +0000 (UTC) Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH v2] RISC-V: Probe misaligned access speed in parallel From: patchwork-bot+linux-riscv@kernel.org Message-Id: <169895643056.22248.6956745778026886386.git-patchwork-notify@kernel.org> Date: Thu, 02 Nov 2023 20:20:30 +0000 References: <20230920193801.3035093-1-evan@rivosinc.com> In-Reply-To: <20230920193801.3035093-1-evan@rivosinc.com> To: Evan Green Cc: linux-riscv@lists.infradead.org, palmer@rivosinc.com, apatel@ventanamicro.com, aou@eecs.berkeley.edu, heiko@sntech.de, maz@kernel.org, linux-kernel@vger.kernel.org, conor.dooley@microchip.com, David.Laight@aculab.com, palmer@dabbelt.com, jszhang@kernel.org, paul.walmsley@sifive.com, greentime.hu@sifive.com, ajones@ventanamicro.com Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello: This patch was applied to riscv/linux.git (for-next) by Palmer Dabbelt : On Wed, 20 Sep 2023 12:38:01 -0700 you wrote: > Probing for misaligned access speed takes about 0.06 seconds. On a > system with 64 cores, doing this in smp_callin() means it's done > serially, extending boot time by 3.8 seconds. That's a lot of boot time. > > Instead of measuring each CPU serially, let's do the measurements on > all CPUs in parallel. If we disable preemption on all CPUs, the > jiffies stop ticking, so we can do this in stages of 1) everybody > except core 0, then 2) core 0. > > [...] Here is the summary with links: - [v2] RISC-V: Probe misaligned access speed in parallel https://git.kernel.org/riscv/c/0c37376609da You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html