Re: [PATCH] MIPS: Mark core_vpe_count() as __init

[Thomas Bogendoerfer <tsbogend@alpha.franken.de>]

On Thu, Jun 15, 2023 at 09:21:18AM -0700, Nathan Chancellor wrote:
> After commit 96cb8ae28c65 ("MIPS: Rework smt cmdline parameters"),
> modpost complains when building with clang:
> 
>   WARNING: modpost: vmlinux.o: section mismatch in reference: core_vpe_count (section: .text) -> smp_max_threads (section: .init.data)
> 
> This warning occurs when core_vpe_count() is not inlined, as it appears
> that a non-init function is referring to an init symbol. However, this
> is not a problem in practice because core_vpe_count() is only called
> from __init functions, cps_smp_setup() and cps_prepare_cpus().
> 
> Resolve the warning by marking core_vpe_count() as __init, as it is only
> called in an init context so it can refer to init functions and symbols
> and have its memory freed on boot.
> 
> Fixes: 96cb8ae28c65 ("MIPS: Rework smt cmdline parameters")
> Signed-off-by: Nathan Chancellor <nathan@kernel.org>
> ---
>  arch/mips/kernel/smp-cps.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/mips/kernel/smp-cps.c b/arch/mips/kernel/smp-cps.c
> index bea6a13ea464..92575222713b 100644
> --- a/arch/mips/kernel/smp-cps.c
> +++ b/arch/mips/kernel/smp-cps.c
> @@ -29,7 +29,7 @@ static DECLARE_BITMAP(core_power, NR_CPUS);
>  
>  struct core_boot_config *mips_cps_core_bootcfg;
>  
> -static unsigned core_vpe_count(unsigned int cluster, unsigned core)
> +static unsigned __init core_vpe_count(unsigned int cluster, unsigned core)
>  {
>  	return min(smp_max_threads, mips_cps_numvps(cluster, core));
>  }
> 
> ---
> base-commit: 5cad8323040bb8d47e130c10ea4dcb7175c7602a
> change-id: 20230615-mips-mark-core_vpe_count-as-init-600dc73e367d
> 
> Best regards,
> -- 
> Nathan Chancellor <nathan@kernel.org>
> 

applied to mips-next.

Thomas.

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