Re: [PATCH][next] scsi: scsi_debug: make read-only arrays static const

[Colin King (gmail)]

On 29/07/2025 18:45, Christophe JAILLET wrote:
> Le 29/07/2025 à 08:49, Colin Ian King a écrit :
> > Don't populate the read-only arrays on the stack at run time, instead
> > make them static const. Also reduces overall size.
> >
> > before:
> >     text       data        bss        dec        hex    filename
> >   367439      89582       5952     462973      7107d    drivers/scsi/ 
> > scsi_debug.o
> >
> > after:
> >     text       data        bss        dec        hex    filename
> >   365847      90702       5952     462501      70ea5    drivers/scsi/ 
> > scsi_debug.o
>
> Hi,
>
> out of curiosity, any idea why 'data' increase?

Because the arrays are being stored in the data section rather than on 
the stack.

> All my constification patches lead to data reduction.
>
> > (gcc 14.2.0, x86-64)
>
> (same kind of behavior with 15.1.1)
>
>
> CJ

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