Re: [PATCH v4 1/4] mm: rename memmap_init() and memmap_init_zone()

Baoquan He
2021-01-21T08:41:07Z

On 01/20/21 at 11:47pm, kernel test robot wrote:
> Hi Baoquan,
>
> I love your patch! Perhaps something to improve:
>
> [auto build test WARNING on linux/master]
> [also build test WARNING on linus/master v5.11-rc4 next-20210120]
> [cannot apply to mmotm/master hnaz-linux-mm/master ia64/next]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch]
>
> url: https://github.com/0day-ci/linux/commits/Baoquan-He/mm-clean-up-names-and-parameters-of-memmap_init_xxxx-functions/20210120-135239
> base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 1e2a199f6ccdc15cf111d68d212e2fd4ce65682e
> config: mips-randconfig-r036-20210120 (attached as .config)
> compiler: mips-linux-gcc (GCC) 9.3.0
> 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/1bbb0b35dd2fae4a7a38098e63899677c2e53108
> git remote add linux-review https://github.com/0day-ci/linux
> git fetch --no-tags linux-review Baoquan-He/mm-clean-up-names-and-parameters-of-memmap_init_xxxx-functions/20210120-135239
> git checkout 1bbb0b35dd2fae4a7a38098e63899677c2e53108
> # save the attached .config to linux build tree
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=mips
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
>
> All warnings (new ones prefixed by >>):
>
> mm/page_alloc.c:3597:15: warning: no previous prototype for 'should_fail_alloc_page' [-Wmissing-prototypes]
> 3597 | noinline bool should_fail_alloc_page(gfp_t gfp_mask, unsigned int order)
> | ^~~~~~~~~~~~~~~~~~~~~~
> >> mm/page_alloc.c:6258:23: warning: no previous prototype for 'memmap_init_zone' [-Wmissing-prototypes]
> 6258 | void __meminit __weak memmap_init_zone(unsigned long size, int nid,

This is not introduced by this patch, but existing issue, should
be not related to this patchset. I will investigate and see what we
should do with memmap_init_zone(), adding static or adding it to header
file, or just leave it as should_fail_alloc_page().

By the way, I tried to reproduce on a fedora 32 system of x86 arch, but
met below issue. could you help check what I can do to fix the error.

[root@dell-per710-01 linux]# COMPILER_INSTALL_PATH=~/0day COMPILER=gcc-9.3.0 ~/bin/make.cross ARCH=mips
Compiler will be installed in /root/0day
make W=1 CONFIG_OF_ALL_DTBS=y CONFIG_DTC=y CROSS_COMPILE=/root/0day/gcc-9.3.0-nolibc/mips-linux/bin/mips-linux- --jobs=16 ARCH=mips
HOSTCXX scripts/gcc-plugins/latent_entropy_plugin.so
HOSTCXX scripts/gcc-plugins/structleak_plugin.so
HOSTCXX scripts/gcc-plugins/randomize_layout_plugin.so
In file included from /root/0day/gcc-9.3.0-nolibc/mips-linux/bin/../lib/gcc/mips-linux/9.3.0/plugin/include/gcc-plugin.h:28,
from scripts/gcc-plugins/gcc-common.h:7,
from scripts/gcc-plugins/latent_entropy_plugin.c:78:
/root/0day/gcc-9.3.0-nolibc/mips-linux/bin/../lib/gcc/mips-linux/9.3.0/plugin/include/system.h:687:10: fatal error: gmp.h: No such file or directy
687 | #include <gmp.h>
| ^~~~~~~
compilation terminated.
make[2]: *** [scripts/gcc-plugins/Makefile:47: scripts/gcc-plugins/latent_entropy_plugin.so] Error 1
make[2]: *** Waiting for unfinished jobs..

Thanks
Baoquan

> | ^~~~~~~~~~~~~~~~
>
>
> vim +/memmap_init_zone +6258 mm/page_alloc.c
>
> 6257
> > 6258 void __meminit __weak memmap_init_zone(unsigned long size, int nid,
> 6259 unsigned long zone,
> 6260 unsigned long range_start_pfn)
> 6261 {
> 6262 unsigned long start_pfn, end_pfn;
> 6263 unsigned long range_end_pfn = range_start_pfn + size;
> 6264 int i;
> 6265
> 6266 for_each_mem_pfn_range(i, nid, &start_pfn, &end_pfn, NULL) {
> 6267 start_pfn = clamp(start_pfn, range_start_pfn, range_end_pfn);
> 6268 end_pfn = clamp(end_pfn, range_start_pfn, range_end_pfn);
> 6269
> 6270 if (end_pfn > start_pfn) {
> 6271 size = end_pfn - start_pfn;
> 6272 memmap_init_range(size, nid, zone, start_pfn, range_end_pfn,
> 6273 MEMINIT_EARLY, NULL, MIGRATE_MOVABLE);
> 6274 }
> 6275 }
> 6276 }
> 6277
>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org