Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1278713
| From | Riku Voipio <riku.voipio@linaro.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] uselib: default depending if libc5 was used |
| Date | 2015-11-27 11:50 +0100 |
| Message-ID | <qzoLg-1HO-15@gated-at.bofh.it> (permalink) |
| References | <qznma-UI-7@gated-at.bofh.it> <qznFw-11n-13@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 27 November 2015 at 11:33, Josh Triplett <josh@joshtriplett.org> wrote: > On Fri, Nov 27, 2015 at 11:11:26AM +0200, Riku Voipio wrote: >> uselib hasn't been used since libc5; glibc does not use it. >> Deprecate uselib a bit more, by making the default y only >> if libc5 was widely used on the plaform. >> >> This makes arm64 kernel built with defconfig slighly smaller >> >> bloat-o-meter: >> add/remove: 0/3 grow/shrink: 0/2 up/down: 0/-1390 (-1390) >> function old new delta >> kernel_config_data 18164 18162 -2 >> uselib_flags 20 - -20 >> padzero 216 192 -24 >> sys_uselib 380 - -380 >> load_elf_library 964 - -964 >> >> Signed-off-by: Riku Voipio <riku.voipio@linaro.org> >> Cc: Josh Triplett <josh@joshtriplett.org> > > Seems sensible. Can you also make it only "default y" on 32-bit x86, > not 64-bit x86, since the latter never had libc5? but running 32bit libc5 apps is possible with X86_64 kernel, so the check would become: || X86_32 || (X86_64 && IA32_EMULATION) > With that change: > Reviewed-by: Josh Triplett <josh@joshtriplett.org> > >> init/Kconfig | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/init/Kconfig b/init/Kconfig >> index c24b6f7..bef326d 100644 >> --- a/init/Kconfig >> +++ b/init/Kconfig >> @@ -285,7 +285,7 @@ config FHANDLE >> >> config USELIB >> bool "uselib syscall" >> - default y >> + def_bool ALPHA || M68K || SPARC || X86 >> help >> This option enables the uselib syscall, a system call used in the >> dynamic linker from libc5 and earlier. glibc does not use this >> -- >> 2.6.2 >> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
[PATCH] uselib: default depending if libc5 was used Riku Voipio <riku.voipio@linaro.org> - 2015-11-27 10:20 +0100
Re: [PATCH] uselib: default depending if libc5 was used Josh Triplett <josh@joshtriplett.org> - 2015-11-27 10:40 +0100
Re: [PATCH] uselib: default depending if libc5 was used Riku Voipio <riku.voipio@linaro.org> - 2015-11-27 11:50 +0100
Re: [PATCH] uselib: default depending if libc5 was used Josh Triplett <josh@joshtriplett.org> - 2015-11-27 21:10 +0100
csiph-web