Michael S. Tsirkin
2021-Jul-05 18:42 UTC
[PATCH net-next 0/2] refactor the ringtest testing for ptr_ring
On Mon, Jul 05, 2021 at 09:36:26PM +0300, Andy Shevchenko wrote:> On Mon, Jul 05, 2021 at 02:26:32PM -0400, Michael S. Tsirkin wrote: > > 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. > > The problem here, that we are almost getting two copies of the headers, and > tools are not in a good maintenance, so it's often desynchronized from the > actual Linux headers. This will become more and more diverse if we keep same > way of operation. So, I would rather NAK any new copies of the headers from > include/ to tools/include.We already have the copies yes they are not maintained well ... what's the plan then? NAK won't help us improve the situation. I would say copies are kind of okay just make sure they are built with kconfig. Then any breakage will be detected.> > > > 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? > > -- > With Best Regards, > Andy Shevchenko >
Andy Shevchenko
2021-Jul-05 19:05 UTC
[PATCH net-next 0/2] refactor the ringtest testing for ptr_ring
On Mon, Jul 5, 2021 at 9:45 PM Michael S. Tsirkin <mst at redhat.com> wrote:> > On Mon, Jul 05, 2021 at 09:36:26PM +0300, Andy Shevchenko wrote: > > On Mon, Jul 05, 2021 at 02:26:32PM -0400, Michael S. Tsirkin wrote: > > > 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. > > > > The problem here, that we are almost getting two copies of the headers, and > > tools are not in a good maintenance, so it's often desynchronized from the > > actual Linux headers. This will become more and more diverse if we keep same > > way of operation. So, I would rather NAK any new copies of the headers from > > include/ to tools/include. > > We already have the copies > yes they are not maintained well ... what's the plan then? > NAK won't help us improve the situation.I understand and the proposal is to leave only the files which are not the same (can we do kinda wrappers or so in tools/include rather than copying everything?).> I would say copies are kind of okay just make sure they are > built with kconfig. Then any breakage will be > detected. > > > > > > 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?-- With Best Regards, Andy Shevchenko