All of lore.kernel.org
 help / color / mirror / Atom feed
From: Masahiro Yamada <masahiroy@kernel.org>
To: Nathan Chancellor <nathan@kernel.org>
Cc: Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Nick Desaulniers <ndesaulniers@google.com>,
	Nicolas Schier <nicolas@fjasle.eu>,
	Peter Zijlstra <peterz@infradead.org>,
	linux-modules <linux-modules@vger.kernel.org>,
	linux-s390 <linux-s390@vger.kernel.org>,
	linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
	clang-built-linux <clang-built-linux@googlegroups.com>,
	Ard Biesheuvel <ardb@kernel.org>,
	Sami Tolvanen <samitolvanen@google.com>
Subject: Re: [PATCH v4 00/14] kbuild: yet another series of cleanups (modpost, LTO, MODULE_REL_CRCS, export.h)
Date: Tue, 10 May 2022 15:55:21 +0900	[thread overview]
Message-ID: <CAK7LNATkm+GzqNLgpbh4F+M=U8LU48p2NH9MyqeO6uA_KYJFaQ@mail.gmail.com> (raw)
In-Reply-To: <YnmSCNDBlMMJCbjj@dev-arch.thelio-3990X>

On Tue, May 10, 2022 at 7:13 AM Nathan Chancellor <nathan@kernel.org> wrote:
>
> On Mon, May 09, 2022 at 01:24:33PM +0900, Masahiro Yamada wrote:
> > On Mon, May 9, 2022 at 4:09 AM Masahiro Yamada <masahiroy@kernel.org> wrote:
> > >
> > > This is the third batch of cleanups in this development cycle.
> > >
> > > Major changes in v4:
> > >  - Move static EXPORT_SYMBOL check to a script
> > >  - Some refactoring
> > >
> > > Major changes in v3:
> > >
> > >  - Generate symbol CRCs as C code, and remove CONFIG_MODULE_REL_CRCS.
> > >
> > > Major changes in v2:
> > >
> > >  - V1 did not work with CONFIG_MODULE_REL_CRCS.
> > >    I fixed this for v2.
> > >
> > >  - Reflect some review comments in v1
> > >
> > >  - Refactor the code more
> > >
> > >  - Avoid too long argument error
> >
> > This series is available at
> > git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git
> > lto-cleanup-v4
>
> Hi Masahiro,
>
> I checked this out and went to run it through my QEMU tests but I see
> two new errors.
>
> Failure #1:
>
> In file included from scripts/mod/section-check.c:3:
> scripts/mod/modpost.h:15:10: fatal error: 'elfconfig.h' file not found
> #include "elfconfig.h"
>          ^~~~~~~~~~~~~
> 1 error generated.
>
> I was able to get past that with
>
> diff --git a/scripts/mod/Makefile b/scripts/mod/Makefile
> index ca739c6c68a1..c33b83bfbcad 100644
> --- a/scripts/mod/Makefile
> +++ b/scripts/mod/Makefile
> @@ -16,7 +16,7 @@ targets += $(devicetable-offsets-file) devicetable-offsets.s
>
>  # dependencies on generated files need to be listed explicitly
>
> -$(obj)/modpost.o $(obj)/file2alias.o $(obj)/sumversion.o: $(obj)/elfconfig.h
> +$(obj)/modpost.o $(obj)/file2alias.o $(obj)/sumversion.o $(obj)/section-check.o: $(obj)/elfconfig.h
>  $(obj)/file2alias.o: $(obj)/$(devicetable-offsets-file)
>

Thanks for testing.


I will slightly refactor the code as follows.




@@ -16,7 +16,7 @@ targets += $(devicetable-offsets-file) devicetable-offsets.s

 # dependencies on generated files need to be listed explicitly

-$(obj)/modpost.o $(obj)/file2alias.o $(obj)/sumversion.o: $(obj)/elfconfig.h
+$(addprefix $(obj)/, $(modpost-objs)): $(obj)/elfconfig.h

 $(obj)/file2alias.o: $(obj)/$(devicetable-offsets-file)

 quiet_cmd_elfconfig = MKELF   $@








>  quiet_cmd_elfconfig = MKELF   $@
>
> Failure #2:
>
>   GEN     .version
>   CHK     include/generated/compile.h
>   GEN     .tmp_initcalls.lds
>   LTO     vmlinux.o
>   OBJTOOL vmlinux.o
>   MODPOST vmlinux.symvers
>   MODINFO modules.builtin.modinfo
>   GEN     modules.builtin
>   LD      .tmp_vmlinux.btf
> ld.lld: error: cannot open .vmlinux.export.o: No such file or directory
>   BTF     .btf.vmlinux.bin.o
> pahole: .tmp_vmlinux.btf: No such file or directory
>   CC      .vmlinux.export.c
>   LD      .tmp_vmlinux.kallsyms1
> ld.lld: error: .btf.vmlinux.bin.o: unknown file type
> make[1]: *** [Makefile:1159: vmlinux] Error 1
>
> I was not really able to see what is going wrong here. Attached is the
> configuration that I ran into this with. If you need any other
> information, please let me know!

Ah, OK.
This is because .vmlinux.export.o is compiled after gen_btf.

I will swap the order in v5.





> Cheers,
> Nathan



--
Best Regards
Masahiro Yamada

WARNING: multiple messages have this Message-ID
From: Masahiro Yamada <masahiroy@kernel.org>
To: Nathan Chancellor <nathan@kernel.org>
Cc: linux-s390 <linux-s390@vger.kernel.org>,
	Nicolas Schier <nicolas@fjasle.eu>,
	Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Nick Desaulniers <ndesaulniers@google.com>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	clang-built-linux <clang-built-linux@googlegroups.com>,
	Sami Tolvanen <samitolvanen@google.com>,
	linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
	Ard Biesheuvel <ardb@kernel.org>,
	linux-modules <linux-modules@vger.kernel.org>
Subject: Re: [PATCH v4 00/14] kbuild: yet another series of cleanups (modpost,  LTO, MODULE_REL_CRCS, export.h)
Date: Tue, 10 May 2022 15:55:21 +0900	[thread overview]
Message-ID: <CAK7LNATkm+GzqNLgpbh4F+M=U8LU48p2NH9MyqeO6uA_KYJFaQ@mail.gmail.com> (raw)
In-Reply-To: <YnmSCNDBlMMJCbjj@dev-arch.thelio-3990X>

On Tue, May 10, 2022 at 7:13 AM Nathan Chancellor <nathan@kernel.org> wrote:
>
> On Mon, May 09, 2022 at 01:24:33PM +0900, Masahiro Yamada wrote:
> > On Mon, May 9, 2022 at 4:09 AM Masahiro Yamada <masahiroy@kernel.org> wrote:
> > >
> > > This is the third batch of cleanups in this development cycle.
> > >
> > > Major changes in v4:
> > >  - Move static EXPORT_SYMBOL check to a script
> > >  - Some refactoring
> > >
> > > Major changes in v3:
> > >
> > >  - Generate symbol CRCs as C code, and remove CONFIG_MODULE_REL_CRCS.
> > >
> > > Major changes in v2:
> > >
> > >  - V1 did not work with CONFIG_MODULE_REL_CRCS.
> > >    I fixed this for v2.
> > >
> > >  - Reflect some review comments in v1
> > >
> > >  - Refactor the code more
> > >
> > >  - Avoid too long argument error
> >
> > This series is available at
> > git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git
> > lto-cleanup-v4
>
> Hi Masahiro,
>
> I checked this out and went to run it through my QEMU tests but I see
> two new errors.
>
> Failure #1:
>
> In file included from scripts/mod/section-check.c:3:
> scripts/mod/modpost.h:15:10: fatal error: 'elfconfig.h' file not found
> #include "elfconfig.h"
>          ^~~~~~~~~~~~~
> 1 error generated.
>
> I was able to get past that with
>
> diff --git a/scripts/mod/Makefile b/scripts/mod/Makefile
> index ca739c6c68a1..c33b83bfbcad 100644
> --- a/scripts/mod/Makefile
> +++ b/scripts/mod/Makefile
> @@ -16,7 +16,7 @@ targets += $(devicetable-offsets-file) devicetable-offsets.s
>
>  # dependencies on generated files need to be listed explicitly
>
> -$(obj)/modpost.o $(obj)/file2alias.o $(obj)/sumversion.o: $(obj)/elfconfig.h
> +$(obj)/modpost.o $(obj)/file2alias.o $(obj)/sumversion.o $(obj)/section-check.o: $(obj)/elfconfig.h
>  $(obj)/file2alias.o: $(obj)/$(devicetable-offsets-file)
>

Thanks for testing.


I will slightly refactor the code as follows.




@@ -16,7 +16,7 @@ targets += $(devicetable-offsets-file) devicetable-offsets.s

 # dependencies on generated files need to be listed explicitly

-$(obj)/modpost.o $(obj)/file2alias.o $(obj)/sumversion.o: $(obj)/elfconfig.h
+$(addprefix $(obj)/, $(modpost-objs)): $(obj)/elfconfig.h

 $(obj)/file2alias.o: $(obj)/$(devicetable-offsets-file)

 quiet_cmd_elfconfig = MKELF   $@








>  quiet_cmd_elfconfig = MKELF   $@
>
> Failure #2:
>
>   GEN     .version
>   CHK     include/generated/compile.h
>   GEN     .tmp_initcalls.lds
>   LTO     vmlinux.o
>   OBJTOOL vmlinux.o
>   MODPOST vmlinux.symvers
>   MODINFO modules.builtin.modinfo
>   GEN     modules.builtin
>   LD      .tmp_vmlinux.btf
> ld.lld: error: cannot open .vmlinux.export.o: No such file or directory
>   BTF     .btf.vmlinux.bin.o
> pahole: .tmp_vmlinux.btf: No such file or directory
>   CC      .vmlinux.export.c
>   LD      .tmp_vmlinux.kallsyms1
> ld.lld: error: .btf.vmlinux.bin.o: unknown file type
> make[1]: *** [Makefile:1159: vmlinux] Error 1
>
> I was not really able to see what is going wrong here. Attached is the
> configuration that I ran into this with. If you need any other
> information, please let me know!

Ah, OK.
This is because .vmlinux.export.o is compiled after gen_btf.

I will swap the order in v5.





> Cheers,
> Nathan



--
Best Regards
Masahiro Yamada

  reply	other threads:[~2022-05-10  6:56 UTC|newest]

Thread overview: 68+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-08 19:06 [PATCH v4 00/14] kbuild: yet another series of cleanups (modpost, LTO, MODULE_REL_CRCS, export.h) Masahiro Yamada
2022-05-08 19:06 ` Masahiro Yamada
2022-05-08 19:06 ` [PATCH v4 01/14] modpost: remove left-over cross_compile declaration Masahiro Yamada
2022-05-08 19:06   ` Masahiro Yamada
2022-05-09 17:08   ` Nick Desaulniers
2022-05-09 17:08     ` Nick Desaulniers
2022-05-12  4:35   ` Masahiro Yamada
2022-05-12  4:35     ` Masahiro Yamada
2022-05-08 19:06 ` [PATCH v4 02/14] modpost: change the license of EXPORT_SYMBOL to bool type Masahiro Yamada
2022-05-08 19:06   ` Masahiro Yamada
2022-05-12  4:36   ` Masahiro Yamada
2022-05-12  4:36     ` Masahiro Yamada
2022-05-08 19:06 ` [PATCH v4 03/14] modpost: split the section mismatch checks into section-check.c Masahiro Yamada
2022-05-08 19:06   ` Masahiro Yamada
2022-05-09 17:19   ` Nick Desaulniers
2022-05-09 17:19     ` Nick Desaulniers
2022-05-10  6:55     ` Masahiro Yamada
2022-05-10  6:55       ` Masahiro Yamada
2022-05-11 18:47       ` Nick Desaulniers
2022-05-11 18:47         ` Nick Desaulniers
2022-05-11 19:27         ` Masahiro Yamada
2022-05-11 19:27           ` Masahiro Yamada
2022-05-11 19:51           ` Jeff Johnson
2022-05-11 19:51             ` Jeff Johnson
2022-05-11 20:01             ` Nick Desaulniers
2022-05-11 20:01               ` Nick Desaulniers
2022-05-08 19:06 ` [PATCH v4 04/14] modpost: add sym_find_with_module() helper Masahiro Yamada
2022-05-08 19:06   ` Masahiro Yamada
2022-05-08 19:06 ` [PATCH v4 05/14] modpost: extract symbol versions from *.cmd files Masahiro Yamada
2022-05-08 19:06   ` Masahiro Yamada
2022-05-09 21:52   ` Sami Tolvanen
2022-05-09 21:52     ` Sami Tolvanen
2022-05-08 19:06 ` [PATCH v4 06/14] kbuild: link symbol CRCs at final link, removing CONFIG_MODULE_REL_CRCS Masahiro Yamada
2022-05-08 19:06   ` Masahiro Yamada
2022-05-09 17:50   ` Nick Desaulniers
2022-05-09 17:50     ` Nick Desaulniers
2022-05-10 13:03     ` Masahiro Yamada
2022-05-10 13:03       ` Masahiro Yamada
2022-05-08 19:06 ` [PATCH v4 07/14] kbuild: stop merging *.symversions Masahiro Yamada
2022-05-08 19:06   ` Masahiro Yamada
2022-05-08 19:06 ` [PATCH v4 08/14] genksyms: adjust the output format to modpost Masahiro Yamada
2022-05-08 19:06   ` Masahiro Yamada
2022-05-08 19:06 ` [PATCH v4 09/14] kbuild: do not create *.prelink.o for Clang LTO or IBT Masahiro Yamada
2022-05-08 19:06   ` Masahiro Yamada
2022-05-09 23:13   ` Sami Tolvanen
2022-05-09 23:13     ` Sami Tolvanen
2022-05-08 19:06 ` [PATCH v4 10/14] kbuild: check static EXPORT_SYMBOL* by script instead of modpost Masahiro Yamada
2022-05-08 19:06   ` Masahiro Yamada
2022-05-09 18:05   ` Nick Desaulniers
2022-05-09 18:05     ` Nick Desaulniers
2022-05-10 13:53     ` Masahiro Yamada
2022-05-10 13:53       ` Masahiro Yamada
2022-05-08 19:06 ` [PATCH v4 11/14] kbuild: make built-in.a rule robust against too long argument error Masahiro Yamada
2022-05-08 19:06   ` Masahiro Yamada
2022-05-08 19:06 ` [PATCH v4 12/14] kbuild: make *.mod " Masahiro Yamada
2022-05-08 19:06   ` Masahiro Yamada
2022-05-08 19:06 ` [PATCH v4 13/14] kbuild: add cmd_and_savecmd macro Masahiro Yamada
2022-05-08 19:06   ` Masahiro Yamada
2022-05-08 19:06 ` [PATCH v4 14/14] kbuild: rebuild multi-object modules when objtool is updated Masahiro Yamada
2022-05-08 19:06   ` Masahiro Yamada
2022-05-09  4:24 ` [PATCH v4 00/14] kbuild: yet another series of cleanups (modpost, LTO, MODULE_REL_CRCS, export.h) Masahiro Yamada
2022-05-09  4:24   ` Masahiro Yamada
2022-05-09 22:13   ` Nathan Chancellor
2022-05-09 22:13     ` Nathan Chancellor
2022-05-10  6:55     ` Masahiro Yamada [this message]
2022-05-10  6:55       ` Masahiro Yamada
2022-05-09 22:19   ` Nathan Chancellor
2022-05-09 22:19     ` Nathan Chancellor

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to='CAK7LNATkm+GzqNLgpbh4F+M=U8LU48p2NH9MyqeO6uA_KYJFaQ@mail.gmail.com' \
    --to=masahiroy@kernel.org \
    --cc=ardb@kernel.org \
    --cc=clang-built-linux@googlegroups.com \
    --cc=linux-kbuild@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-modules@vger.kernel.org \
    --cc=linux-s390@vger.kernel.org \
    --cc=linuxppc-dev@lists.ozlabs.org \
    --cc=nathan@kernel.org \
    --cc=ndesaulniers@google.com \
    --cc=nicolas@fjasle.eu \
    --cc=peterz@infradead.org \
    --cc=samitolvanen@google.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.