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From: Nick Desaulniers <ndesaulniers@google.com>
To: Masahiro Yamada <masahiroy@kernel.org>
Cc: linux-kbuild@vger.kernel.org,
	Michal Marek <michal.lkml@markovi.net>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 02/13] kbuild: rename __objtool_obj to objtool
Date: Tue, 31 Aug 2021 10:16:45 -0700	[thread overview]
Message-ID: <CAKwvOdn9661=wg3ErhaHM=QS4=zOqjK7_f7VqpTgUoGTGnzHsA@mail.gmail.com> (raw)
In-Reply-To: <20210831074004.3195284-3-masahiroy@kernel.org>

On Tue, Aug 31, 2021 at 12:40 AM Masahiro Yamada <masahiroy@kernel.org> wrote:
>
> Rename __objtool_obj to objtool, and move it out of the
> 'ifndef CONFIG_LTO_CLANG' conditional, so it can be used for
> cmd_cc_lto_link_modules as well.
>
> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>

> ---
>
>  scripts/Makefile.build | 11 +++++------
>  1 file changed, 5 insertions(+), 6 deletions(-)
>
> diff --git a/scripts/Makefile.build b/scripts/Makefile.build
> index 17508c0e4358..e78096cd396b 100644
> --- a/scripts/Makefile.build
> +++ b/scripts/Makefile.build
> @@ -225,6 +225,8 @@ endif # CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT
>
>  ifdef CONFIG_STACK_VALIDATION
>
> +objtool := $(objtree)/tools/objtool/objtool
> +
>  objtool_args =                                                         \
>         $(if $(CONFIG_UNWINDER_ORC),orc generate,check)                 \
>         $(if $(part-of-module), --module)                               \
> @@ -236,17 +238,15 @@ objtool_args =                                                            \
>
>  ifndef CONFIG_LTO_CLANG
>
> -__objtool_obj := $(objtree)/tools/objtool/objtool
> -
>  # 'OBJECT_FILES_NON_STANDARD := y': skip objtool checking for a directory
>  # 'OBJECT_FILES_NON_STANDARD_foo.o := 'y': skip objtool checking for a file
>  # 'OBJECT_FILES_NON_STANDARD_foo.o := 'n': override directory skip for a file
>  cmd_objtool = $(if $(patsubst y%,, \
>         $(OBJECT_FILES_NON_STANDARD_$(basetarget).o)$(OBJECT_FILES_NON_STANDARD)n), \
> -       $(__objtool_obj) $(objtool_args) $@)
> +       $(objtool) $(objtool_args) $@)
>  objtool_obj = $(if $(patsubst y%,, \
>         $(OBJECT_FILES_NON_STANDARD_$(basetarget).o)$(OBJECT_FILES_NON_STANDARD)n), \
> -       $(__objtool_obj))
> +       $(objtool))
>
>  endif # CONFIG_LTO_CLANG
>  endif # CONFIG_STACK_VALIDATION
> @@ -300,8 +300,7 @@ cmd_cc_lto_link_modules =                                           \
>  ifdef CONFIG_STACK_VALIDATION
>  # objtool was skipped for LLVM bitcode, run it now that we have compiled
>  # modules into native code
> -cmd_cc_lto_link_modules += ;                                           \
> -       $(objtree)/tools/objtool/objtool $(objtool_args) --module $@
> +cmd_cc_lto_link_modules += ; $(objtool) $(objtool_args) --module $@
>  endif
>
>  $(obj)/%.lto.o: $(obj)/%.o FORCE
> --
> 2.30.2
>


-- 
Thanks,
~Nick Desaulniers

  reply	other threads:[~2021-08-31 17:17 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-31  7:39 [PATCH v2 00/13] kbuild: second round of Clang LTO refactoring Masahiro Yamada
2021-08-31  7:39 ` [PATCH v2 01/13] kbuild: move objtool_args back to scripts/Makefile.build Masahiro Yamada
2021-09-04 18:18   ` Josh Poimboeuf
2021-08-31  7:39 ` [PATCH v2 02/13] kbuild: rename __objtool_obj to objtool Masahiro Yamada
2021-08-31 17:16   ` Nick Desaulniers [this message]
2021-08-31 17:29   ` Kees Cook
2021-09-04 18:19   ` Josh Poimboeuf
2021-08-31  7:39 ` [PATCH v2 03/13] kbuild: store the objtool command in *.cmd files Masahiro Yamada
2021-08-31 17:23   ` Nick Desaulniers
2021-08-31 17:30   ` Kees Cook
2021-09-04 18:04   ` Josh Poimboeuf
2021-09-04 18:45     ` Josh Poimboeuf
2021-09-08 16:12       ` Masahiro Yamada
2021-08-31  7:39 ` [PATCH v2 04/13] kbuild: factor out OBJECT_FILES_NON_STANDARD check into a macro Masahiro Yamada
2021-08-31 17:25   ` Nick Desaulniers
2021-08-31 17:31   ` Kees Cook
2021-09-04 18:59   ` Josh Poimboeuf
2021-08-31  7:39 ` [PATCH v2 05/13] kbuild: detect objtool update without using .SECONDEXPANSION Masahiro Yamada
2021-08-31 17:32   ` Kees Cook
2021-09-03  0:43     ` Masahiro Yamada
2021-08-31 17:33   ` Nick Desaulniers
2021-09-02 23:42     ` Masahiro Yamada
2021-09-04 19:04   ` Josh Poimboeuf
2021-08-31  7:39 ` [PATCH v2 06/13] kbuild: reuse $(cmd_objtool) for cmd_cc_lto_link_modules Masahiro Yamada
2021-08-31 17:35   ` Kees Cook
2021-09-03  0:39     ` Masahiro Yamada
2021-09-03  1:49       ` Kees Cook
2021-09-04 19:11   ` Josh Poimboeuf
2021-08-31  7:39 ` [PATCH v2 07/13] kbuild: do not create built-in.a.symversions or lib.a.symversions Masahiro Yamada
2021-08-31 17:36   ` Kees Cook
2021-08-31  7:39 ` [PATCH v2 08/13] kbuild: build modules in the same way with/without Clang LTO Masahiro Yamada
2021-08-31 17:39   ` Kees Cook
2021-08-31 17:46   ` Nick Desaulniers
2021-08-31  7:40 ` [PATCH v2 09/13] kbuild: add cmd_and_savecmd macro Masahiro Yamada
2021-08-31 17:39   ` Kees Cook
2021-08-31  7:40 ` [PATCH v2 10/13] kbuild: rebuild modules when objtool is updated for CONFIG_LTO_CLANG Masahiro Yamada
2021-08-31 17:40   ` Kees Cook
2021-09-04 19:13   ` Josh Poimboeuf
2021-08-31  7:40 ` [PATCH v2 11/13] kbuild: always postpone CRC links for module versioning Masahiro Yamada
2021-08-31  7:40 ` [PATCH v2 12/13] kbuild: merge cmd_modversions_c and cmd_modversions_S Masahiro Yamada
2021-08-31  7:40 ` [PATCH v2 13/13] kbuild: merge cmd_ar_builtin and cmd_ar_module Masahiro Yamada

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