linux-kernel - Re: (subset) [PATCH v1 0/2] io

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Date:   Wed, 16 Nov 2022 15:22:30 +0100
From:   Stefan Metzmacher <metze@...ba.org>
To:     Jens Axboe <axboe@...nel.dk>, Ammar Faizi <ammarfaizi2@...weeb.org>
Cc:     GNU/Weeb Mailing List <gwml@...r.gnuweeb.org>,
        io-uring Mailing List <io-uring@...r.kernel.org>,
        Pavel Begunkov <asml.silence@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: (subset) [PATCH v1 0/2] io_uring uapi updates

Am 16.11.22 um 14:50 schrieb Jens Axboe:
> On 11/15/22 11:34 PM, Ammar Faizi wrote:
>> On 11/16/22 6:14 AM, Jens Axboe wrote:
>>> On Wed, 16 Nov 2022 04:29:51 +0700, Ammar Faizi wrote:
>>>> From: Ammar Faizi <ammarfaizi2@...weeb.org>
>>>>
>>>> Hi Jens,
>>>>
>>>> io_uring uapi updates:
>>>>
>>>> 1) Don't force linux/time_types.h for userspace. Linux's io_uring.h is
>>>>      synced 1:1 into liburing's io_uring.h. liburing has a configure
>>>>      check to detect the need for linux/time_types.h (Stefan).
>>>>
>>>> [...]
>>>
>>> Applied, thanks!
>>>
>>> [1/2] io_uring: uapi: Don't force linux/time_types.h for userspace
>>>         commit: 958bfdd734b6074ba88ee3abc69d0053e26b7b9c
>>
>> Jens, please drop this commit. It breaks the build:
> 
> Dropped - please actually build your patches, or make it clear that
> they were not built at all. None of these 2 patches were any good.

Is it tools/testing/selftests/net/io_uring_zerocopy_tx.c that doesn't build?
and needs a '#define HAVE_LINUX_TIME_TYPES_H 1'

BTW, the original commit I posted was here:
https://lore.kernel.org/io-uring/c7782923deeb4016f2ac2334bc558921e8d91a67.1666605446.git.metze@samba.org/

What's the magic to compile tools/testing/selftests/net/io_uring_zerocopy_tx.c ?

My naive tries both fail (even without my patch):
All other files including any io_uring.h build and the patch was also included
in a branch where I build a complete working kernel with 'make -j33 bindeb-pkg'

metze@...NOX19:~/devel/kernel/linux-4.4$ LANG=C make $(find io_uring/*.c fs/file_table.c fs/exec.c kernel/exit.c kernel/fork.c net/socket.c  net/unix/scm.c 
security/selinux/hooks.c security/smack/smack_lsm.c tools/testing/selftests/net/io_uring_zerocopy_tx.c | sed -e 's!\.c$!.o!') EXTRA_CFLAGS="-Wfatal-errors"
   UPD     include/config/kernel.release
   UPD     include/generated/utsrelease.h
   CALL    scripts/checksyscalls.sh
   DESCEND objtool
   DESCEND bpf/resolve_btfids
   CC      fs/file_table.o
   CC      fs/exec.o
   CC      io_uring/advise.o
   CC      io_uring/cancel.o
   CC      io_uring/epoll.o
   CC      io_uring/fdinfo.o
   CC      io_uring/filetable.o
   CC      io_uring/fs.o
   CC      io_uring/io_uring.o
   CC      io_uring/io-wq.o
   CC      io_uring/kbuf.o
   CC      io_uring/msg_ring.o
   CC      io_uring/net.o
   CC      io_uring/nop.o
   CC      io_uring/notif.o
   CC      io_uring/opdef.o
   CC      io_uring/openclose.o
   CC      io_uring/poll.o
   CC      io_uring/rsrc.o
   CC      io_uring/rw.o
   CC      io_uring/splice.o
   CC      io_uring/sqpoll.o
   CC      io_uring/statx.o
   CC      io_uring/sync.o
   CC      io_uring/tctx.o
   CC      io_uring/timeout.o
   CC      io_uring/uring_cmd.o
   CC      io_uring/xattr.o
   CC      kernel/exit.o
   CC      kernel/fork.o
   CC      net/socket.o
   CC      net/unix/scm.o
   CC      security/selinux/hooks.o
   CC      security/smack/smack_lsm.o
   CC      tools/testing/selftests/net/io_uring_zerocopy_tx.o
tools/testing/selftests/net/io_uring_zerocopy_tx.c:3:10: fatal error: assert.h: No such file or directory
     3 | #include <assert.h>
       |          ^~~~~~~~~~
compilation terminated.
make[1]: *** [scripts/Makefile.build:258: tools/testing/selftests/net/io_uring_zerocopy_tx.o] Error 1
make: *** [Makefile:1997: .] Error 2


metze@...NOX19:~/devel/kernel/linux-4.4/tools/testing/selftests/net$ make io_uring_zerocopy_tx.o
gcc -Wall -Wl,--no-as-needed -O2 -g -I../../../../usr/include/ -isystem /home/metze/devel/kernel/linux-4.4/tools/testing/selftests/../../../usr/include   -c -o 
io_uring_zerocopy_tx.o io_uring_zerocopy_tx.c
io_uring_zerocopy_tx.c: In function ‘io_uring_prep_sendzc’:
io_uring_zerocopy_tx.c:287:30: error: ‘IORING_OP_SEND_ZC’ undeclared (first use in this function); did you mean ‘IORING_OP_SEND’?
   287 |         sqe->opcode = (__u8) IORING_OP_SEND_ZC;
       |                              ^~~~~~~~~~~~~~~~~
       |                              IORING_OP_SEND
io_uring_zerocopy_tx.c:287:30: note: each undeclared identifier is reported only once for each function it appears in
io_uring_zerocopy_tx.c: In function ‘do_tx’:
io_uring_zerocopy_tx.c:407:56: error: ‘IORING_RECVSEND_FIXED_BUF’ undeclared (first use in this function)
   407 |                                         sqe->ioprio |= IORING_RECVSEND_FIXED_BUF;
       |                                                        ^~~~~~~~~~~~~~~~~~~~~~~~~
io_uring_zerocopy_tx.c:429:42: error: ‘IORING_CQE_F_NOTIF’ undeclared (first use in this function); did you mean ‘IORING_CQE_F_MORE’?
   429 |                         if (cqe->flags & IORING_CQE_F_NOTIF) {
       |                                          ^~~~~~~~~~~~~~~~~~
       |                                          IORING_CQE_F_MORE
make: *** [<eingebaut>: io_uring_zerocopy_tx.o] Fehler 1