linux-kernel - Re: [PATCH 19/54] drivers/irqchip: replace cpumask_weight with cpumask

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Message-ID: <0c4f392f-d18f-812f-b7d5-9184127c6fb7@gmail.com>
Date:   Sun, 23 Jan 2022 19:11:42 -0800
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Yury Norov <yury.norov@...il.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Michał Mirosław <mirq-linux@...e.qmqm.pl>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Peter Zijlstra <peterz@...radead.org>,
        David Laight <David.Laight@...lab.com>,
        Joe Perches <joe@...ches.com>, Dennis Zhou <dennis@...nel.org>,
        Emil Renner Berthing <kernel@...il.dk>,
        Nicholas Piggin <npiggin@...il.com>,
        Matti Vaittinen <matti.vaittinen@...rohmeurope.com>,
        Alexey Klimov <aklimov@...hat.com>,
        linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>,
        bcm-kernel-feedback-list@...adcom.com, linux-mips@...r.kernel.org
Subject: Re: [PATCH 19/54] drivers/irqchip: replace cpumask_weight with
 cpumask_empty where appropriate



On 1/23/2022 10:38 AM, Yury Norov wrote:
> bcm6345_l1_of_init() calls cpumask_weight() to check if any bit of a given
> cpumask is set. We can do it more efficiently with cpumask_empty() because
> cpumask_empty() stops traversing the cpumask as soon as it finds first set
> bit, while cpumask_weight() counts all bits unconditionally.
> 
> Signed-off-by: Yury Norov <yury.norov@...il.com>

Acked-by: Florian Fainelli <f.fainelli@...il.com>
-- 
Florian