[PATCH v3] ARM: smp: Only expose /sys/.../cpuX/online if hotpluggable

[Geert Uytterhoeven]

On Sat, Feb 14, 2015 at 1:42 AM, Stephen Boyd <sboyd at codeaurora.org> wrote:
> --- a/arch/arm/include/asm/smp.h
> +++ b/arch/arm/include/asm/smp.h
> @@ -104,6 +104,7 @@ struct smp_operations {
>  #ifdef CONFIG_HOTPLUG_CPU
>         int  (*cpu_kill)(unsigned int cpu);
>         void (*cpu_die)(unsigned int cpu);
> +       int  (*cpu_can_disable)(unsigned int cpu);

Perhaps this should be changed to return bool while you're adding the function?
That saves us from an atomic update later when someone does janitorial work.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds