linux-kernel - Re: [tip:sched/core 24/27] kernel/power/suspend.c:431:10: error: implicit declaration of function 'suspend_disable_secondary

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Date:   Sat, 04 May 2019 09:51:34 +1000
From:   Nicholas Piggin <npiggin@...il.com>
To:     kbuild test robot <lkp@...el.com>,
        Peter Zijlstra <peterz@...radead.org>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        Ingo Molnar <mingo@...nel.org>, tipbuild@...or.com
Subject: Re: [tip:sched/core 24/27] kernel/power/suspend.c:431:10: error:
 implicit declaration of function 'suspend_disable_secondary_cpus'

Peter Zijlstra's on May 4, 2019 2:04 am:
> On Fri, May 03, 2019 at 08:34:57PM +0800, kbuild test robot wrote:
>> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched/core
>> head:   65874bd36e6ae3028539e989bfb5c28ad457368e
>> commit: c2cb30bfceceba8a2a0d5713230a250dd6140e22 [24/27] power/suspend: Add function to disable secondaries for suspend
>> config: x86_64-randconfig-l3-05031806 (attached as .config)
>> compiler: gcc-5 (Debian 5.5.0-3) 5.4.1 20171010
>> reproduce:
>>         git checkout c2cb30bfceceba8a2a0d5713230a250dd6140e22
>>         # save the attached .config to linux build tree
>>         make ARCH=x86_64 
>> 
> 
> The below appears to fix.
> 
> 
> --- a/include/linux/cpu.h
> +++ b/include/linux/cpu.h
> @@ -150,6 +150,8 @@ static inline void suspend_enable_second
>  #else /* !CONFIG_PM_SLEEP_SMP */
>  static inline int disable_nonboot_cpus(void) { return 0; }
>  static inline void enable_nonboot_cpus(void) {}
> +static inline int suspend_disable_secondary_cpus(void) { return 0; }
> +static inline void suspend_enable_secondary_cpus(void) { }
>  #endif /* !CONFIG_PM_SLEEP_SMP */
>  
>  void cpu_startup_entry(enum cpuhp_state state);
> 

Oops, thanks for that, it looks okay.

Thanks,
Nick