Re: [PATCH v2 2/4] mm: handle uninitialized numa nodes gracefully

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On Wed 15-12-21 12:47:16, kernel test robot wrote:
> Hi Michal,
> 
> I love your patch! Perhaps something to improve:
> 
> [auto build test WARNING on hnaz-mm/master]
> 
> url:    https://github.com/0day-ci/linux/commits/Michal-Hocko/mm-memory_hotplug-make-arch_alloc_nodedata-independent-on-CONFIG_MEMORY_HOTPLUG/20211214-190817
> base:   https://github.com/hnaz/linux-mm master
> config: ia64-defconfig (https://download.01.org/0day-ci/archive/20211215/202112151219.xAI8NaQR-lkp@xxxxxxxxx/config)
> compiler: ia64-linux-gcc (GCC) 11.2.0
> reproduce (this is a W=1 build):
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # https://github.com/0day-ci/linux/commit/65c560a3ac2561750c1dc71213f042e660b9bbc0
>         git remote add linux-review https://github.com/0day-ci/linux
>         git fetch --no-tags linux-review Michal-Hocko/mm-memory_hotplug-make-arch_alloc_nodedata-independent-on-CONFIG_MEMORY_HOTPLUG/20211214-190817
>         git checkout 65c560a3ac2561750c1dc71213f042e660b9bbc0
>         # save the config file to linux build tree
>         mkdir build_dir
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=ia64 SHELL=/bin/bash
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
> 
> All warnings (new ones prefixed by >>, old ones prefixed by <<):
> 
> >> WARNING: modpost: vmlinux.o(.text+0x566a2): Section mismatch in reference from the function arch_alloc_nodedata() to the function .init.text:memblock_alloc_try_nid()
> The function arch_alloc_nodedata() references
> the function __init memblock_alloc_try_nid().
> This is often because arch_alloc_nodedata lacks a __init
> annotation or the annotation of memblock_alloc_try_nid is wrong.

Thanks for the report. This should do the trick. I will fold it into the
patch.

diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c
index b4c46925792f..dd0cf4834eaa 100644
--- a/arch/ia64/mm/discontig.c
+++ b/arch/ia64/mm/discontig.c
@@ -608,7 +608,7 @@ void __init paging_init(void)
 	zero_page_memmap_ptr = virt_to_page(ia64_imva(empty_zero_page));
 }
 
-pg_data_t *arch_alloc_nodedata(int nid)
+pg_data_t * __init arch_alloc_nodedata(int nid)
 {
 	unsigned long size = compute_pernodesize(nid);
 
-- 
Michal Hocko
SUSE Labs




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