Re: [PATCH] sched/idle: Drop !! while calculating 'broadcast'

On 24 June 2014 13:33, Peter Zijlstra peterz@infradead.org wrote:

All true; but does it change anything? That is, does your compiler generate better code because of this?

Compilers are smart enough now a days and may not perform !! at all I believe.. And so this patch is more about code clarity ..

I tried comparing results for ARM and got this with/without this patch ..

$ size ../bexynos/kernel/sched/idle.o text data bss dec hex filename 690 30 0 720 2d0 ../bexynos/kernel/sched/idle.o

Don't know if some architectures are using somewhat dumb compilers which might result in better code with this patch :)