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 0EB84C433F5 for ; Sun, 28 Nov 2021 18:47:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: 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=/n8Fw4IyU1F5fHoWTvLyqOcZIf3XUL5VB8l7IOe2NBY=; b=C5CV94jQnZ2w+Q hz+ukD2MzX3VwY4R2vsiYKbzq9vELHjWzT6fvbDFdtX/5dX1mE/bKsj5EZfkfr8RH+7xcK5TU2jKl K0lM68ayWSuoZ9b1WQCRfezZRWY+z9AffqkonsA1Dlvknh29rnNPkVmdpPgMnb5yrRUtS0zQAWxXf PU6Hw+BhxkzL4YuLfhQOARtyz+qnWexSOXgq5Zvq1QjmLdUhslBiahlH/2nIYRGTFhfSRHtHqvbj2 MX1riie4+Tgr/DNzbqtz++cM0JRpjaVNW5ArGjWjzZUQJN0exxaV4s5VfuywOQXHQ0pZunyogs9Cn 9bTMz02Wh+668PTKJeMg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mrPCw-00GU7j-4f; Sun, 28 Nov 2021 18:47:26 +0000 Received: from mail-qv1-xf35.google.com ([2607:f8b0:4864:20::f35]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mrPCs-00GU62-K7; Sun, 28 Nov 2021 18:47:24 +0000 Received: by mail-qv1-xf35.google.com with SMTP id i13so12286526qvm.1; Sun, 28 Nov 2021 10:47:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=+5JBAVd8frUmOsccut4e882tgrn1djQ8KjHhL4/ag+E=; b=oEs9cCLNoYNdz+AbfzXoumcqnU2rFCFJ5TyCH12jj8Ix0vmr0cjhof0ocW5eqSpQbo mrHrVXqzVgn1iu3yISJ4wwf50y2BGwES4qCIZWk6z19v3s6rfhM8ODKHsnHGdu0xSYmn zutWpoWgGKrfvlhNB+FDfgo3OCF/7V6L7yaewLYpZDm48/8KLn7Bhlr/nJjgfB4Oiw7i hyEVArk/04uNSdzcAMwME+LGzw661S1XN1lrF6iOjE5r2wDmrufbwXHGBlcjc0XG2JfP D0I2JqoyhsvbiLTErDYg5FY5mgjhIpdLZ1XuQkVWsomuMWeu+IFVGskruJ1MCFhjIPEq wYYw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=+5JBAVd8frUmOsccut4e882tgrn1djQ8KjHhL4/ag+E=; b=W+ePG4AXaCNLIJAeSkZfkFU8hlJX22GA4kJUtRD4hfo5IZA/6Ik0ga0f0KXiPKlZEw PMVGWwjdP1ykXTpe7JZ36IVCUMWh/FbB5pKty+uM1fnaWdJk87GwlVj6Yd8JlvMSzH1n nVC60ueI8mN5dJ1j2gWNyYJsTQu4igsfkAgHyePhMBDDEeQtS5NmpvqmOh/WBxlw2avW YMg95/c6z/+/M3TrHuAthim20ONa79/S3qgtzi5exFC3TwzvK+nGLTk+r4mHm162Aaro gkkjjV0eP0gE5rKkJ5kE+ayQKjYocXbSjkovs7YGGBe9Xw+F8l+Mh9svo2YlKwRkJpQf rjBQ== X-Gm-Message-State: AOAM530PVaOxEX5S8LaNaqxQsl5E0hHjJ3iys3cpkZwgimL9rmyrFV/F a9HAmMlpAq9RBHGSEHfqkSI= X-Google-Smtp-Source: ABdhPJy+21VmTcm+AhhPYb7MVuOfGbfxLsGp1r9C41IKKFVcOTnAXjsR8SRxKxcOFPC3Y4DL0s01XQ== X-Received: by 2002:a05:6214:2348:: with SMTP id hu8mr12230119qvb.9.1638125241136; Sun, 28 Nov 2021 10:47:21 -0800 (PST) Received: from localhost ([66.216.211.25]) by smtp.gmail.com with ESMTPSA id e13sm7457944qte.56.2021.11.28.10.47.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 28 Nov 2021 10:47:20 -0800 (PST) Date: Sun, 28 Nov 2021 10:47:12 -0800 From: Yury Norov To: Dennis Zhou Cc: Joe Perches , linux-kernel@vger.kernel.org, "James E.J. Bottomley" , "Martin K. Petersen" , "Paul E. McKenney" , "Rafael J. Wysocki" , Alexander Shishkin , Alexey Klimov , Amitkumar Karwar , Andi Kleen , Andrew Lunn , Andrew Morton , Andy Gross , Andy Lutomirski , Andy Shevchenko , Anup Patel , Ard Biesheuvel , Arnaldo Carvalho de Melo , Arnd Bergmann , Borislav Petkov , Catalin Marinas , Christoph Hellwig , Christoph Lameter , Daniel Vetter , Dave Hansen , David Airlie , David Laight , Dinh Nguyen , Geetha sowjanya , Geert Uytterhoeven , Greg Kroah-Hartman , Guo Ren , Hans de Goede , Heiko Carstens , Ian Rogers , Ingo Molnar , Jakub Kicinski , Jason Wessel , Jens Axboe , Jiri Olsa , Jonathan Cameron , Juri Lelli , Kalle Valo , Kees Cook , Krzysztof Kozlowski , Lee Jones , Marc Zyngier , Marcin Wojtas , Mark Gross , Mark Rutland , Matti Vaittinen , Mauro Carvalho Chehab , Mel Gorman , Michael Ellerman , Mike Marciniszyn , Nicholas Piggin , Palmer Dabbelt , Peter Zijlstra , Petr Mladek , Randy Dunlap , Rasmus Villemoes , Roy Pledge , Russell King , Saeed Mahameed , Sagi Grimberg , Sergey Senozhatsky , Solomon Peachy , Stephen Boyd , Stephen Rothwell , Steven Rostedt , Subbaraya Sundeep , Sudeep Holla , Sunil Goutham , Tariq Toukan , Tejun Heo , Thomas Bogendoerfer , Thomas Gleixner , Ulf Hansson , Vincent Guittot , Vineet Gupta , Viresh Kumar , Vivien Didelot , Vlastimil Babka , Will Deacon , bcm-kernel-feedback-list@broadcom.com, kvm@vger.kernel.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linux-csky@vger.kernel.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, linux-perf-users@vger.kernel.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-snps-arc@lists.infradead.org, linuxppc-dev@lists.ozlabs.org Subject: Re: [PATCH 7/9] lib/cpumask: add num_{possible,present,active}_cpus_{eq,gt,le} Message-ID: <20211128184712.GA309073@lapt> References: <20211128035704.270739-1-yury.norov@gmail.com> <20211128035704.270739-8-yury.norov@gmail.com> <8f389151c39a8a5b6b31d5238cb680305225d9f2.camel@perches.com> <20211128174320.GA304543@lapt> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211128_104722_709775_80A3AF17 X-CRM114-Status: GOOD ( 29.77 ) 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 Sun, Nov 28, 2021 at 12:54:00PM -0500, Dennis Zhou wrote: > Hello, > > On Sun, Nov 28, 2021 at 09:43:20AM -0800, Yury Norov wrote: > > On Sun, Nov 28, 2021 at 09:07:52AM -0800, Joe Perches wrote: > > > On Sat, 2021-11-27 at 19:57 -0800, Yury Norov wrote: > > > > Add num_{possible,present,active}_cpus_{eq,gt,le} and replace num_*_cpus() > > > > with one of new functions where appropriate. This allows num_*_cpus_*() > > > > to return earlier depending on the condition. > > > [] > > > > diff --git a/arch/arc/kernel/smp.c b/arch/arc/kernel/smp.c > > > [] > > > > @@ -103,7 +103,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus) > > > > * if platform didn't set the present map already, do it now > > > > * boot cpu is set to present already by init/main.c > > > > */ > > > > - if (num_present_cpus() <= 1) > > > > + if (num_present_cpus_le(2)) > > > > init_cpu_present(cpu_possible_mask); > > > > > > ? is this supposed to be 2 or 1 > > > > X <= 1 is the equivalent of X < 2. > > > > > > diff --git a/drivers/cpufreq/pcc-cpufreq.c b/drivers/cpufreq/pcc-cpufreq.c > > > [] > > > > @@ -593,7 +593,7 @@ static int __init pcc_cpufreq_init(void) > > > > return ret; > > > > } > > > > > > > > - if (num_present_cpus() > 4) { > > > > + if (num_present_cpus_gt(4)) { > > > > pcc_cpufreq_driver.flags |= CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING; > > > > pr_err("%s: Too many CPUs, dynamic performance scaling disabled\n", > > > > __func__); > > > > > > It looks as if the present variants should be using the same values > > > so the _le test above with 1 changed to 2 looks odd. > > > > I think the confusion comes from le meaning less than rather than lt. > Given the general convention of: lt (<), le (<=), eg (=), ge (>=), > gt (>), I'd consider renaming your le to lt. Ok, makes sense. I'll rename in v2 and add <= and >= versions. _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv