stacktrace.c:(.text+0x1b0): undefined reference to `.smp_send_safe_nmi_ipi'

[Christophe LEROY]

Le 14/06/2018 à 12:25, Nicholas Piggin a écrit :
> On Thu, 14 Jun 2018 12:06:51 +0200
> Christophe LEROY <christophe.leroy at c-s.fr> wrote:
> 
>> See http://kisskb.ellerman.id.au/kisskb/buildresult/13395345/ for details
>>
>> Seems like that function only exists when CONFIG_NMI_IPI is defined.
>>
>> Problem introduced by commit 5cc05910f26e6fd6da15f052f86f6150e4b91664
>> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/arch/powerpc/kernel/stacktrace.c?h=next-20180614&id=5cc05910f26e6fd6da15f052f86f6150e4b91664
>>
>>
>> What do you recommend to fix that ?
> 
> We could just do smp_call_function in the case we have no NMI_IPI?

???

Can you detail what you have in mind ? Do smp_call_function() to call 
what ? Instead of the call to smp_send_safe_nmi_ipi() ?

Thanks
Christophe

> 
> Thanks,
> Nick
>