On Wed, Nov 11, 2020 at 08:26:45AM -0500, Greg Troxel wrote:
> > LOCK(st);
> > size_t n, max_n = st->num_items;
> > some_state_item **tmp_list =
> > kmem_intr_alloc(max_n * sizeof(*tmp_list));
>
> kmem_intr_alloc takes a flag, and it seems that you need to pass
> KM_NOSLEEP, as blocking for memory in softint context is highly unlikely
> to be the right thing.
Yes, and of course the real code has that (and works). It's just that
- memoryallocators(9) does not cover this case
- kmem_intr_alloc(9) is kinda deprecated - quoting the man page:
These routines are for the special cases. Normally,
pool_cache(9) should be used for memory allocation from interrupt
context.
but how would I use pool_cache(9) here?
Martin
