# Re: \[PATCH net-next 0/2\] refactor the ringtest testing for ptr\_ring

- From: Michael S. Tsirkin \<mst@redhat.com\>
- Date: 2021-07-05 18:26:42 
- List: virtualization
- Page: https://ratatoskr.run/virtualization/2021/07/1433457
- Thread: https://ratatoskr.run/netdev/2021/07/1432679/t.md

```text
On Mon, Jul 05, 2021 at 08:06:50PM +0800, Yunsheng Lin wrote:
> On 2021/7/5 17:56, Andy Shevchenko wrote:
> > On Mon, Jul 05, 2021 at 11:57:33AM +0800, Yunsheng Lin wrote:
> >> tools/include/* have a lot of abstract layer for building
> >> kernel code from userspace, so reuse or add the abstract
> >> layer in tools/include/ to build the ptr_ring for ringtest
> >> testing.
> > 
> > ...
> > 
> >>  create mode 100644 tools/include/asm/cache.h
> >>  create mode 100644 tools/include/asm/processor.h
> >>  create mode 100644 tools/include/generated/autoconf.h
> >>  create mode 100644 tools/include/linux/align.h
> >>  create mode 100644 tools/include/linux/cache.h
> >>  create mode 100644 tools/include/linux/slab.h
> > 
> > Maybe somebody can change this to be able to include in-tree headers directly?
> 
> If the above works, maybe the files in tools/include/* is not
> necessary any more, just use the in-tree headers to compile
> the user space app?
> 
> Or I missed something here?

why would it work? kernel headers outside of uapi are not
intended to be consumed by userspace.


> > 
> > Besides above, had you tested this with `make O=...`?
> 
> You are right, the generated/autoconf.h is in another directory
> with `make O=...`.
> 
> Any nice idea to fix the above problem?
> 
> > 

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```