From patchwork Thu May 26 11:51:19 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Viresh Kumar X-Patchwork-Id: 12862381 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 7F173C433EF for ; Thu, 26 May 2022 11:51:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229619AbiEZLvd (ORCPT ); Thu, 26 May 2022 07:51:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52874 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232556AbiEZLvb (ORCPT ); Thu, 26 May 2022 07:51:31 -0400 Received: from mail-pf1-x436.google.com (mail-pf1-x436.google.com [IPv6:2607:f8b0:4864:20::436]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DE379D0280 for ; Thu, 26 May 2022 04:51:30 -0700 (PDT) Received: by mail-pf1-x436.google.com with SMTP id f21so1514178pfa.3 for ; Thu, 26 May 2022 04:51:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=b6k3SV/2S1GAZa9ElYwCPu3QFpy6+7ouZdodLYF77Eg=; b=legUHLb2Ee0bshJ1QbJG8LcjSMIqtKRbixMePTPiZEcUDPkkQFN267HpCA1jFH2J7i rGS0iYDVjK1GC0GvSFOiqQLKen+vc+VtZ8EOXdLo/qPxcFmymLIexh6kgJumiN7mYFj+ J6rKWsicVRH3v9GpAakUPk4AfDJntjsKM5FLceeHrpnToV+987nv/FzLNy3S4+K3FZ2F rUV23pJ0j80ZpHT6uoNmAWM4IrQSfpzcR66leo/NeCjGXGFkvm28a/h8bynAShdfBsGL 45+k1NsfTemXBUIlqh9sUL4pzdUAroSSOqM4749wgnNV1SQRFxgG6KXvm19oZ0GjzMsN f4xw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=b6k3SV/2S1GAZa9ElYwCPu3QFpy6+7ouZdodLYF77Eg=; b=Pdj9pjrWxAR53ZDFdUVZwe/LEOhoNcymEtpjyaqJ3fdTvJ8bF5iCtDvrjUadF9x4fX B9F/nvqDh/CZUlgKM6A+XVF347PNyI0HHnvQ47zLjBbqiMgu11bm5KETtTUFpSBMuKRb 41fZKCCkQpFs3Tp9/q1VFBmQk916uWSYdvzqDb4B+43EhD+TX53+/1qLSQ8ROEebSBOe A2dlEjdN0ECVFtVL0OWQRTNhVU3qIHO+H9HeizyG9sGFt+fY7HKQsFydX4eNYo4uckIm ARHY91Ln5rtqFKy/Vc7pgrRlTXet/EK5prSXIoxjxP7gOvq2MmoDTj/ohD18mDvB/RiZ X7Yg== X-Gm-Message-State: AOAM533g3zVQoF7MUF9NANnQycL1Ljo2OobFsgndF26jq9w05HcLjsUX +EIi3AFG7y15k3y3jvaASqSMAw== X-Google-Smtp-Source: ABdhPJwZOiTJevyRe6XAQM2vVij0hiPhs8czMbGSWZxAAmYgERefN9RdPvVJGaeJvUfNt/FVir8xcA== X-Received: by 2002:a63:5cb:0:b0:3f6:3a45:a479 with SMTP id 194-20020a6305cb000000b003f63a45a479mr31263406pgf.242.1653565890428; Thu, 26 May 2022 04:51:30 -0700 (PDT) Received: from localhost ([122.162.234.2]) by smtp.gmail.com with ESMTPSA id f7-20020a170902ab8700b0015e8d4eb272sm1295713plr.188.2022.05.26.04.51.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 May 2022 04:51:30 -0700 (PDT) From: Viresh Kumar To: "Rafael J. Wysocki" , Viresh Kumar Cc: linux-pm@vger.kernel.org, Vincent Guittot , linux-kernel@vger.kernel.org Subject: [PATCH 1/3] cpufreq: Optimize cpufreq_show_cpus() Date: Thu, 26 May 2022 17:21:19 +0530 Message-Id: X-Mailer: git-send-email 2.31.1.272.g89b43f80a514 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Instead of specially adding a space for each CPU, except the first one, lets add space for each of them and remove it at the end. Signed-off-by: Viresh Kumar --- drivers/cpufreq/cpufreq.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 2cad42774164..e24aa5d4bca5 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -843,12 +843,14 @@ ssize_t cpufreq_show_cpus(const struct cpumask *mask, char *buf) unsigned int cpu; for_each_cpu(cpu, mask) { - if (i) - i += scnprintf(&buf[i], (PAGE_SIZE - i - 2), " "); - i += scnprintf(&buf[i], (PAGE_SIZE - i - 2), "%u", cpu); + i += scnprintf(&buf[i], (PAGE_SIZE - i - 2), "%u ", cpu); if (i >= (PAGE_SIZE - 5)) break; } + + /* Remove the extra space at the end */ + i--; + i += sprintf(&buf[i], "\n"); return i; }