linux-kernel - Re: [PATCH] genirq: Provide new interfaces for affinity hints

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Date:   Fri, 21 May 2021 23:45:14 +0200
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Lijun Pan <lijunp213@...il.com>
Cc:     Nitesh Lal <nilal@...hat.com>,
        Jesse Brandeburg <jesse.brandeburg@...el.com>,
        Robin Murphy <robin.murphy@....com>,
        Marcelo Tosatti <mtosatti@...hat.com>,
        Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org,
        intel-wired-lan@...ts.osuosl.org, jbrandeb@...nel.org,
        "frederic\@kernel.org" <frederic@...nel.org>,
        "juri.lelli\@redhat.com" <juri.lelli@...hat.com>,
        Alex Belits <abelits@...vell.com>,
        "linux-api\@vger.kernel.org" <linux-api@...r.kernel.org>,
        "bhelgaas\@google.com" <bhelgaas@...gle.com>,
        "linux-pci\@vger.kernel.org" <linux-pci@...r.kernel.org>,
        "rostedt\@goodmis.org" <rostedt@...dmis.org>,
        "peterz\@infradead.org" <peterz@...radead.org>,
        "davem\@davemloft.net" <davem@...emloft.net>,
        "akpm\@linux-foundation.org" <akpm@...ux-foundation.org>,
        "sfr\@canb.auug.org.au" <sfr@...b.auug.org.au>,
        "stephen\@networkplumber.org" <stephen@...workplumber.org>,
        "rppt\@linux.vnet.ibm.com" <rppt@...ux.vnet.ibm.com>,
        "jinyuqi\@huawei.com" <jinyuqi@...wei.com>,
        "zhangshaokun\@hisilicon.com" <zhangshaokun@...ilicon.com>,
        netdev@...r.kernel.org, chris.friesen@...driver.com,
        Marc Zyngier <maz@...nel.org>,
        Neil Horman <nhorman@...driver.com>, pjwaskiewicz@...il.com
Subject: Re: [PATCH] genirq: Provide new interfaces for affinity hints

On Fri, May 21 2021 at 10:45, Lijun Pan wrote:
> On Fri, May 21, 2021 at 7:48 AM Thomas Gleixner <tglx@...utronix.de> wrote:
>> +/**
>> + * irq_update_affinity_hint - Update the affinity hint
>> + * @irq:       Interrupt to update
>> + * @cpumask:   cpumask pointer (NULL to clear the hint)
>> + *
>> + * Updates the affinity hint, but does not change the affinity of the interrupt.
>> + */
>> +static inline int
>> +irq_update_affinity_hint(unsigned int irq, const struct cpumask *m)
>> +{
>> +       return __irq_apply_affinity_hint(irq, m, true);
>> +}
>
> Should it be:
> return __irq_apply_affinity_hint(irq, m, false);
> here?

Of course. Copy & Pasta should be forbidden.

Thanks for spotting it!

       tglx