Re: [ckrm-tech] [RFC][PATCH] UBC: user resource beancounters

Alan Cox
2006-08-24T10:49:48Z

Ar Mer, 2006-08-23 am 19:04 -0700, ysgrifennodd Chandra Seetharaman:
> > A single centralized structure that has fields that are mostly used by
> > every one should be okay I think.
>
> You mean to say definition like
>
> struct user_beancounter {
> fields;/* fields that exists now */
>
> int kmemsize_ctlr_info1;
> char *kmemsize_ctlr_info2;
>
> char *oomguar_ctlr_info1;
> char *oomguar_ctlr_info2;
>
> /* and so on */
> }
>
> is the right thing to do ? even though oomguar controller doesn't care
> about kmemsize_ctlr_info* etc.,

All you need is

struct wombat_controller
{
struct user_beancounter counter;
void (*wombat_pest_control)(struct wombat *w);
atomic_t wombat_population;
int (*wombat_destructor)(struct wombat *w);
};

and just embed the counter in whatever you are controlling. The point of
the beancounters themselves is to be *SIMPLE*. It's unfortunate that
some folk seem obsessed with extending them for a million theoretical
projects rather than getting them in and working and then extending them
for real projects. Please lets not have another EVMS.

Alan