| Message ID | 20190909105317.20473-1-yamada.masahiro@socionext.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [1/2] export.h: remove defined(__KERNEL__) | expand |
On Mon, 9 Sep 2019, Masahiro Yamada wrote: > This line was touched by commit f235541699bc ("export.h: allow for > per-symbol configurable EXPORT_SYMBOL()"), but the commit log did > not explain why. > > CONFIG_TRIM_UNUSED_KSYMS works for me without defined(__KERNEL__). I'm pretty sure it was needed back then so not to interfere with users of this file. My fault for not documenting it. Nicolas
Hi Nicolas, On Mon, Sep 9, 2019 at 10:48 PM Nicolas Pitre <nico@fluxnic.net> wrote: > > On Mon, 9 Sep 2019, Masahiro Yamada wrote: > > > This line was touched by commit f235541699bc ("export.h: allow for > > per-symbol configurable EXPORT_SYMBOL()"), but the commit log did > > not explain why. > > > > CONFIG_TRIM_UNUSED_KSYMS works for me without defined(__KERNEL__). > > I'm pretty sure it was needed back then so not to interfere with users > of this file. My fault for not documenting it. Hmm, I did not see a problem in my quick build test. Do you remember which file was causing the problem?
On Mon, 9 Sep 2019, Masahiro Yamada wrote: > Hi Nicolas, > > On Mon, Sep 9, 2019 at 10:48 PM Nicolas Pitre <nico@fluxnic.net> wrote: > > > > On Mon, 9 Sep 2019, Masahiro Yamada wrote: > > > > > This line was touched by commit f235541699bc ("export.h: allow for > > > per-symbol configurable EXPORT_SYMBOL()"), but the commit log did > > > not explain why. > > > > > > CONFIG_TRIM_UNUSED_KSYMS works for me without defined(__KERNEL__). > > > > I'm pretty sure it was needed back then so not to interfere with users > > of this file. My fault for not documenting it. > > Hmm, I did not see a problem in my quick build test. > > Do you remember which file was causing the problem? If you build commit 7ec925701f5f with CONFIG_TRIM_UNUSED_KSYMS=y and the defined(__KERNEL__) test removed then you'll get: HOSTCC scripts/mod/modpost.o In file included from scripts/mod/modpost.c:24: scripts/mod/../../include/linux/export.h:81:10: fatal error: linux/kconfig.h: No such file or directory Nicolas
On Tue, Sep 10, 2019 at 1:06 AM Nicolas Pitre <nico@fluxnic.net> wrote: > > On Mon, 9 Sep 2019, Masahiro Yamada wrote: > > > Hi Nicolas, > > > > On Mon, Sep 9, 2019 at 10:48 PM Nicolas Pitre <nico@fluxnic.net> wrote: > > > > > > On Mon, 9 Sep 2019, Masahiro Yamada wrote: > > > > > > > This line was touched by commit f235541699bc ("export.h: allow for > > > > per-symbol configurable EXPORT_SYMBOL()"), but the commit log did > > > > not explain why. > > > > > > > > CONFIG_TRIM_UNUSED_KSYMS works for me without defined(__KERNEL__). > > > > > > I'm pretty sure it was needed back then so not to interfere with users > > > of this file. My fault for not documenting it. > > > > Hmm, I did not see a problem in my quick build test. > > > > Do you remember which file was causing the problem? > > If you build commit 7ec925701f5f with CONFIG_TRIM_UNUSED_KSYMS=y and the > defined(__KERNEL__) test removed then you'll get: > > HOSTCC scripts/mod/modpost.o > In file included from scripts/mod/modpost.c:24: > scripts/mod/../../include/linux/export.h:81:10: fatal error: linux/kconfig.h: No such file or directory > > > Nicolas Thanks for explaining this. It is not the case any more. I will reword the commit message as follows: ------------------------>8--------------------------------------- export.h: remove defined(__KERNEL__), which is no longer needed The conditional define(__KERNEL__) was added by commit f235541699bc ("export.h: allow for per-symbol configurable EXPORT_SYMBOL()"). It was needed at that time to avoid the build error of modpost with CONFIG_TRIM_UNUSED_KSYMS=y. Since commit b2c5cdcfd4bc ("modpost: remove symbol prefix support"), modpost no longer includes linux/export.h, thus the define(__KERNEL__) is unneeded. ------------------------>8--------------------------------------- -- Best Regards Masahiro Yamada
On Tue, 10 Sep 2019, Masahiro Yamada wrote: > On Tue, Sep 10, 2019 at 1:06 AM Nicolas Pitre <nico@fluxnic.net> wrote: > > > > On Mon, 9 Sep 2019, Masahiro Yamada wrote: > > > > > Hi Nicolas, > > > > > > On Mon, Sep 9, 2019 at 10:48 PM Nicolas Pitre <nico@fluxnic.net> wrote: > > > > > > > > On Mon, 9 Sep 2019, Masahiro Yamada wrote: > > > > > > > > > This line was touched by commit f235541699bc ("export.h: allow for > > > > > per-symbol configurable EXPORT_SYMBOL()"), but the commit log did > > > > > not explain why. > > > > > > > > > > CONFIG_TRIM_UNUSED_KSYMS works for me without defined(__KERNEL__). > > > > > > > > I'm pretty sure it was needed back then so not to interfere with users > > > > of this file. My fault for not documenting it. > > > > > > Hmm, I did not see a problem in my quick build test. > > > > > > Do you remember which file was causing the problem? > > > > If you build commit 7ec925701f5f with CONFIG_TRIM_UNUSED_KSYMS=y and the > > defined(__KERNEL__) test removed then you'll get: > > > > HOSTCC scripts/mod/modpost.o > > In file included from scripts/mod/modpost.c:24: > > scripts/mod/../../include/linux/export.h:81:10: fatal error: linux/kconfig.h: No such file or directory > > > > > > Nicolas > > > Thanks for explaining this. > > It is not the case any more. > > > I will reword the commit message as follows: > > ------------------------>8--------------------------------------- > export.h: remove defined(__KERNEL__), which is no longer needed > > The conditional define(__KERNEL__) was added by commit f235541699bc > ("export.h: allow for per-symbol configurable EXPORT_SYMBOL()"). > > It was needed at that time to avoid the build error of modpost > with CONFIG_TRIM_UNUSED_KSYMS=y. > > Since commit b2c5cdcfd4bc ("modpost: remove symbol prefix support"), > modpost no longer includes linux/export.h, thus the define(__KERNEL__) > is unneeded. > ------------------------>8--------------------------------------- > Acked-by: Nicolas Pitre <nico@fluxnic.net> Nicolas
On Mon, Sep 9, 2019 at 7:53 PM Masahiro Yamada <yamada.masahiro@socionext.com> wrote: > > This line was touched by commit f235541699bc ("export.h: allow for > per-symbol configurable EXPORT_SYMBOL()"), but the commit log did > not explain why. > > CONFIG_TRIM_UNUSED_KSYMS works for me without defined(__KERNEL__). > > Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> > --- Both applied to linux-kbuild. > include/linux/export.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/include/linux/export.h b/include/linux/export.h > index fd8711ed9ac4..cdd98a0d918c 100644 > --- a/include/linux/export.h > +++ b/include/linux/export.h > @@ -20,7 +20,7 @@ extern struct module __this_module; > > #ifdef CONFIG_MODULES > > -#if defined(__KERNEL__) && !defined(__GENKSYMS__) > +#if !defined(__GENKSYMS__) > #ifdef CONFIG_MODVERSIONS > /* Mark the CRC weak since genksyms apparently decides not to > * generate a checksums for some symbols */ > -- > 2.17.1 >
diff --git a/include/linux/export.h b/include/linux/export.h index fd8711ed9ac4..cdd98a0d918c 100644 --- a/include/linux/export.h +++ b/include/linux/export.h @@ -20,7 +20,7 @@ extern struct module __this_module; #ifdef CONFIG_MODULES -#if defined(__KERNEL__) && !defined(__GENKSYMS__) +#if !defined(__GENKSYMS__) #ifdef CONFIG_MODVERSIONS /* Mark the CRC weak since genksyms apparently decides not to * generate a checksums for some symbols */
This line was touched by commit f235541699bc ("export.h: allow for per-symbol configurable EXPORT_SYMBOL()"), but the commit log did not explain why. CONFIG_TRIM_UNUSED_KSYMS works for me without defined(__KERNEL__). Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> --- include/linux/export.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)