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SubjectRe: [RFC PATCH v5 1/2] sysctl: Make neg_one a standard constraint

* Aaron Tomlin <atomlin@redhat.com> wrote:

> Add neg_one to the list of standard constraints.
>
> Signed-off-by: Aaron Tomlin <atomlin@redhat.com>
> Acked-by: Rik van Riel <riel@redhat.com>
> Acked-by: David Rientjes <rientjes@google.com>
> ---
> kernel/sysctl.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/kernel/sysctl.c b/kernel/sysctl.c
> index 34a6047..dd531a6 100644
> --- a/kernel/sysctl.c
> +++ b/kernel/sysctl.c
> @@ -122,6 +122,7 @@ extern int blk_iopoll_enabled;
> static int sixty = 60;
> #endif
>
> +static int neg_one = -1;
> static int zero;
> static int __maybe_unused one = 1;
> static int __maybe_unused two = 2;

So what happens if CONFIG_DETECT_HUNG_TASK is not defined and neg_one
is unused? The compiler generates an unused variable warning.

Thanks,

Ingo




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