On Sat, Sep 17, 2016 at 03:09:09PM +0300, Konstantin Khlebnikov wrote:
> >
> > Seems I don't understand the bottom unlikely...
> This is gcc extrension:  
> https://gcc.gnu.org/onlinedocs/gcc/Statement-Exprs.html
> Here macro works as a function which returns bool

no, no, I know for what unlikely extension stand for.
it was just hard to obtain from without the context.
this extension implies someone calls for
if (printk_periodic()) right?

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