Re: [Lsf-pc] [LSF/MM/BPF TOPIC] tracing the source of errors

[Miklos Szeredi <miklos@xxxxxxxxxx>]

On Wed, 7 Feb 2024 at 13:00, Matthew Wilcox <willy@xxxxxxxxxxxxx> wrote:

> To be perfectly clear, you're suggesting two things.
>
> Option (a) change "all" code like this:
> -       ret = -EINVAL;
> +       ret = -ERR(EINVAL);
>
> where ERR would do some magic with __func__ and __LINE__.
>
> Option (b)
>
> -#define EINVAL         22
> +#define E_INVAL        22
> +#define EINVAL         ERR(E_INVAL)
>
> and then change all code that does something like:
>
>         if (err == -EINVAL)
> to
>         if (err == -E_INVAL)
>
> Or have I misunderstood?

Something like that, yes.

Thanks,
Miklos