Re: [PATCH net-next v20 00/13] Device Memory TCP

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On Sun, Aug 18, 2024 at 11:54 PM Mina Almasry <almasrymina@xxxxxxxxxx> wrote:
>
> v20: https://patchwork.kernel.org/project/netdevbpf/list/?series=879373&state=*
> ====
>
> v20 aims to resolve a couple of bug reports against v19, and addresses
> some review comments around the page_pool_check_memory_provider
> mechanism.
>
> Major changes:
> - Test edge cases such as header split disabled in selftest.
> - Change `offset = 0` back to `offset = offset - start` to resolve issue
>   found in RX path by Taehee (thanks!)
> - Address a few comments around page_pool_check_memory_provider() from
>   Pavel & Jakub.
> - Removed some unnecessary includes across various patches in the
>   series.
> - Removed unnecessary EXPORT_SYMBOL(page_pool_mem_providers) (Jakub).
> - Fix regression caused by incorrect dev_get_max_mp_channel check, along
>   with rename (Jakub).
>

Looks like in this iteration I resolved the previous test failure, but
introduced a build regression with certain configs:

ld: vmlinux.o: in function `netdev_rx_queue_restart':
(.text+0x6a4133): undefined reference to `page_pool_check_memory_provider'
make[3]: *** [../scripts/Makefile.vmlinux:34: vmlinux] Error 1
make[2]: *** [/home/kunit/testing/Makefile:1156: vmlinux] Error 2
make[1]: *** [/home/kunit/testing/Makefile:224: __sub-make] Error 2
make: *** [Makefile:224: __sub-make] Error 2

Looks like I'm not build testing with enough config variations (in
this case CONFIG_NET=y but CONFIG_PAGE_POOL=n). I've fixed the issue
locally and added a test to my presubmit checks with this config and a
couple of risky others. Sorry about that.





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