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MIPS: VDSO: Conditionally export __vdso_gettimeofday()

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ld.lld 16.0.0 and newer defaults to '--no-undefined-version', which
causes the following error when CONFIG_MIPS_CLOCK_VSYSCALL is not set:

  ld.lld: error: version script assignment of 'LINUX_2.6' to symbol '__vdso_gettimeofday' failed: symbol not defined

Only export __vdso_gettimeofday() when it will be present in the final
object file, which clears up the error.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202308170532.zxFFv25c-lkp@intel.com/
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Fangrui Song <maskray@google.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
This commit is contained in:
Nathan Chancellor 2023-08-16 14:59:23 -07:00 committed by Thomas Bogendoerfer
parent ed07f6c26f
commit 971fe5095f
1 changed files with 2 additions and 0 deletions
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2
arch/mips/vdso/vdso.lds.S
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@ -94,7 +94,9 @@ VERSION
#ifndef CONFIG_MIPS_DISABLE_VDSO
global:
__vdso_clock_gettime;
#ifdef CONFIG_MIPS_CLOCK_VSYSCALL
__vdso_gettimeofday;
#endif
__vdso_clock_getres;
#if _MIPS_SIM != _MIPS_SIM_ABI64
__vdso_clock_gettime64;