Re: [PATCH v4 3/4] x86/boot/compressed: Mark process_mem_region() index __maybe_unused

[Ingo Molnar <mingo@kernel.org>]

* Thorsten Blum <blum@kernel.org> wrote:

> The local index variable i in process_mem_region() is unused when either
> CONFIG_MEMORY_HOTREMOVE or CONFIG_ACPI is disabled.
> 
> Mark it __maybe_unused accordingly.
> 
> Reviewed-by: Jan Stancek <jstancek@redhat.com>
> Reviewed-by: Nicolas Schier <n.schier@fritz.com>
> Signed-off-by: Thorsten Blum <blum@kernel.org>
> ---
>  arch/x86/boot/compressed/kaslr.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/x86/boot/compressed/kaslr.c b/arch/x86/boot/compressed/kaslr.c
> index 290153818d0f..6f95092fa97e 100644
> --- a/arch/x86/boot/compressed/kaslr.c
> +++ b/arch/x86/boot/compressed/kaslr.c
> @@ -599,7 +599,8 @@ static bool process_mem_region(struct mem_vector *region,
>  			       unsigned long minimum,
>  			       unsigned long image_size)
>  {
> -	int i;
> +	int i __maybe_unused;
> +
>  	/*
>  	 * If no immovable memory found, or MEMORY_HOTREMOVE disabled,
>  	 * use @region directly.

Please improve the code instead of uglifying it with an attribute
of uncertainty. 99% of __maybe_unused uses are unnecessary, such as
this one - let's not introduce new unnecessary uses.

Thanks,

	Ingo