linux-kernel - Re: [PATCH] sched/core: Fix compiling warring in smp=n case

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Date:   Thu, 13 Sep 2018 17:55:25 +0800
From:   Dou Liyang <dou_liyang@....com>
To:     linux-kernel@...r.kernel.org, x86@...nel.org
Cc:     tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
        peterz@...radead.org, vincent.guittot@...aro.org,
        Dou Liyang <douly.fnst@...fujitsu.com>
Subject: Re: [PATCH] sched/core: Fix compiling warring in smp=n case



At 08/10/2018 10:35 AM, Dou Liyang wrote:
> When compiling kernel with SMP disabled, the build warns with:
> 
> kernel/sched/core.c: In function ‘update_rq_clock_task’:
> kernel/sched/core.c:139:17: warning: unused variable ‘irq_delta’ [-Wunused-variable]
>    s64 steal = 0, irq_delta = 0;
> 
> Fix this by revert the HAVE_SCHED_AVG_IRQ to
> 
>    defined(CONFIG_IRQ_TIME_ACCOUNTING) || defined(CONFIG_PARAVIRT_TIME_ACCOUNTING)
> 
> Fixes: 2e62c4743adc ("sched/fair: Remove #ifdefs from scale_rt_capacity()")

Hi,

  Miguel also found this warning. Can we pick it up now? ;-)

Thanks,
	dou