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 0C29AE77186 for ; Wed, 11 Dec 2024 23:45:35 +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:Cc:To:In-Reply-To:References :Date:Message-Id:From:Subject:Content-Transfer-Encoding:MIME-Version: Content-Type:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=o4ptZloOfFwNLV1nxYbKIFIsGukxF2nm3f5nBiNdcUE=; b=W/Vjm6HT01y1NqzHK+T+vMhM22 8r/hZrhoCv+xR8QcKGIuIpReAk42poRceiI3TzTu7PsInDHIJPhuSki2zu/WskXthAT4TiiLcMfwx Be6FgWcCaLQvdiTw0zrmyLnn6jgaRNcCotyHHquo1CcTe8sM94JBDWhkAXnO7UcAyhKKfEGQB4BKA rST4A11dcOiKF5zLcaDQ5/rOdoyBn7V3LhUwR3z9hr6AzoeYYwlCV5nj4FoK7IUurcuCLkhyQhqBJ ktO2Ia+BGmIfzEDSkLPcQ2FeOZatwnVQRGt8jY0h7UQA/KDPdX2gw/pxKTCNpuWwacNU91AQ+6SbR B99Nj0oQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tLWOT-0000000GWXG-36xr; Wed, 11 Dec 2024 23:45:25 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tLVFv-0000000GKVG-09Z2; Wed, 11 Dec 2024 22:32:32 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 0C2945C678F; Wed, 11 Dec 2024 22:31:48 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2ABF1C4CED2; Wed, 11 Dec 2024 22:32:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1733956350; bh=Lj6m1KGdu6A9P37ePkeHmGhpEOYrC07Re+9IHx97taY=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=Q+h6JdhYbgWkkJZKxxBpvzzMrsNxkGoEdza4YFJyky6PGRqvTppB4WWSHpF2XbZEp 3RmwDTIJ+IWZiPF6URzM7AFAUrovMRw7D8NbXB+92TG9vVWaXrcU/MsgUuSOZ3vPex o0MaFjihetIadNNvJTpEn+nlZctZbXnS0fVYRMWoku2hOngBPg/UbRT+WKkxpgNf2d SwvyT1mNlDgHbiMNbtlfPoLzmzqTgNvTIuq+Jo3m/NabxJ757iMFljbIUWU4KxUn8N 5ID5hDIVQ1/ODfWBnJSI9qXoWm4SM9dKAfh3gfNA/Y4dMt1mVhzEjFLVbDxspwHNRS 2u3nMpWh8Eo9Q== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 70C81380A965; Wed, 11 Dec 2024 22:32:47 +0000 (UTC) Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH] kernel/irq/proc: performance: replace seq_printf with seq_put_decimal_ull_width From: patchwork-bot+linux-riscv@kernel.org Message-Id: <173395636600.1729195.17930169527159894833.git-patchwork-notify@kernel.org> Date: Wed, 11 Dec 2024 22:32:46 +0000 References: <20241103080552.4787-1-00107082@163.com> In-Reply-To: <20241103080552.4787-1-00107082@163.com> To: David Wang <00107082@163.com> Cc: linux-riscv@lists.infradead.org, tglx@linutronix.de, richard.henderson@linaro.org, linux@armlinux.org.uk, catalin.marinas@arm.com, will@kernel.org, guoren@kernel.org, chenhuacai@kernel.org, kernel@xen0n.name, James.Bottomley@HansenPartnership.com, deller@gmx.de, mpe@ellerman.id.au, paul.walmsley@sifive.com, ysato@users.sourceforge.jp, dalias@libc.org, glaubitz@physik.fu-berlin.de, davem@davemloft.net, andreas@gaisler.com, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, chris@zankel.net, jcmvbkbc@gmail.com, linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, loongarch@lists.linux.dev, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241211_143231_114866_8ADBB58E X-CRM114-Status: UNSURE ( 6.53 ) X-CRM114-Notice: Please train this message. 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 Hello: This patch was applied to riscv/linux.git (fixes) by Michael Ellerman : On Sun, 3 Nov 2024 16:05:52 +0800 you wrote: > seq_printf is costy, when stress reading /proc/interrupts, profiling indicates > seq_printf takes about ~47% of show_interrupts samples: > > show_interrupts(94.495% 5166019/5466991) > seq_printf(47.429% 2450210/5166019) > vsnprintf(89.232% 2186366/2450210) > format_decode(24.005% 524831/2186366) > number(19.488% 426084/2186366) > memcpy_orig(3.739% 81753/2186366) > ... > _raw_spin_unlock_irqrestore(26.643% 1376379/5166019) > mtree_load(8.059% 416304/5166019) > > [...] Here is the summary with links: - kernel/irq/proc: performance: replace seq_printf with seq_put_decimal_ull_width https://git.kernel.org/riscv/c/5b881c1f8379 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html