Why store pointers for some functions in malloc.c?

[Masato Asou]

Hello tech@ and otto,

Why do only some calling functions store the pinttes in region_info as
below:

static void *
malloc_bytes(struct dir_info *d, size_t size, void *f)
{
</snip>
found:
        if (i == 0 && k == 0 && DO_STATS) {
                struct region_info *r = find(d, bp->page);
                STATS_SETF(r, f);
        }

I found following mail from otto:
https://marc.info/?l=openbsd-tech&m=168171382927798&w=2
> The null "f" values (call sites) are due to the sampling nature of
> small allocations. Recording all call sites of all potential leaks
> introduces too much overhead.

Is this the answer to my question?
--
ASOU Masato