Re: [PATCH -next 1/8] mm: memory_hotplug: add pfn_to_online_folio()

From: Kefeng Wang
Date: Tue Dec 13 2022 - 06:36:32 EST

Next message: Will Deacon: "Re: [PATCH] ftrace: Allow WITH_ARGS flavour of graph tracer with shadow call stack"
Previous message: Russell King (Oracle): "Re: [PATCH v6 net-next 3/5] drivers/net/phy: add connection between ethtool and phylib for PLCA"
In reply to: kernel test robot: "Re: [PATCH -next 1/8] mm: memory_hotplug: add pfn_to_online_folio()"
Next in thread: kernel test robot: "Re: [PATCH -next 1/8] mm: memory_hotplug: add pfn_to_online_folio()"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

On 2022/12/13 19:13, kernel test robot wrote:

Hi Kefeng,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v6.1]
[cannot apply to akpm-mm/mm-everything next-20221213]
[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#_base_tree_information]

url: https://github.com/intel-lab-lkp/linux/commits/Kefeng-Wang/mm-converted-page-idle-and-damon-to-use-folios/20221213-171230
patch link: https://lore.kernel.org/r/20221213092735.187924-2-wangkefeng.wang%40huawei.com
patch subject: [PATCH -next 1/8] mm: memory_hotplug: add pfn_to_online_folio()
config: alpha-allyesconfig
compiler: alpha-linux-gcc (GCC) 12.1.0
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/intel-lab-lkp/linux/commit/6549c7ce5345695320d1dadef2aceff6e76d34f4
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Kefeng-Wang/mm-converted-page-idle-and-damon-to-use-folios/20221213-171230
git checkout 6549c7ce5345695320d1dadef2aceff6e76d34f4
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=alpha prepare

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@xxxxxxxxx>

All error/warnings (new ones prefixed by >>):

In file included from include/linux/mmzone.h:1245,
from include/linux/gfp.h:7,
from include/linux/percpu_counter.h:16,
from include/linux/sched/user.h:7,
from include/linux/cred.h:17,
from include/linux/sched/signal.h:10,
from include/linux/ptrace.h:7,
from arch/alpha/kernel/asm-offsets.c:11:
include/linux/memory_hotplug.h: In function 'pfn_to_online_folio':

include/linux/memory_hotplug.h:230:13: error: implicit declaration of function 'pfn_valid'; did you mean 'gid_valid'? [-Werror=implicit-function-declaration]

230 | if (pfn_valid(pfn)) \
| ^~~~~~~~~
include/linux/memory_hotplug.h:270:29: note: in expansion of macro 'pfn_to_online_page'
270 | struct page *page = pfn_to_online_page(pfn);
| ^~~~~~~~~~~~~~~~~~
In file included from arch/alpha/include/asm/page.h:94,
from include/linux/shm.h:6,
from include/linux/sched.h:16,
from arch/alpha/kernel/asm-offsets.c:10:

include/asm-generic/memory_model.h:41:37: error: implicit declaration of function '__pfn_to_section' [-Werror=implicit-function-declaration]

41 | struct mem_section *__sec = __pfn_to_section(__pfn); \
| ^~~~~~~~~~~~~~~~
include/asm-generic/memory_model.h:53:21: note: in expansion of macro '__pfn_to_page'
53 | #define pfn_to_page __pfn_to_page
| ^~~~~~~~~~~~~
include/linux/memory_hotplug.h:231:27: note: in expansion of macro 'pfn_to_page'
231 | ___page = pfn_to_page(pfn); \
| ^~~~~~~~~~~
include/linux/memory_hotplug.h:270:29: note: in expansion of macro 'pfn_to_online_page'
270 | struct page *page = pfn_to_online_page(pfn);
| ^~~~~~~~~~~~~~~~~~

include/asm-generic/memory_model.h:41:37: warning: initialization of 'struct mem_section *' from 'int' makes pointer from integer without a cast [-Wint-conversion]

41 | struct mem_section *__sec = __pfn_to_section(__pfn); \
| ^~~~~~~~~~~~~~~~
include/asm-generic/memory_model.h:53:21: note: in expansion of macro '__pfn_to_page'
53 | #define pfn_to_page __pfn_to_page
| ^~~~~~~~~~~~~
include/linux/memory_hotplug.h:231:27: note: in expansion of macro 'pfn_to_page'
231 | ___page = pfn_to_page(pfn); \
| ^~~~~~~~~~~
include/linux/memory_hotplug.h:270:29: note: in expansion of macro 'pfn_to_online_page'
270 | struct page *page = pfn_to_online_page(pfn);
| ^~~~~~~~~~~~~~~~~~
include/asm-generic/memory_model.h:41:37: note: (near initialization for 'page')
41 | struct mem_section *__sec = __pfn_to_section(__pfn); \
| ^~~~~~~~~~~~~~~~
include/asm-generic/memory_model.h:53:21: note: in expansion of macro '__pfn_to_page'
53 | #define pfn_to_page __pfn_to_page
| ^~~~~~~~~~~~~
include/linux/memory_hotplug.h:231:27: note: in expansion of macro 'pfn_to_page'
231 | ___page = pfn_to_page(pfn); \
| ^~~~~~~~~~~
include/linux/memory_hotplug.h:270:29: note: in expansion of macro 'pfn_to_online_page'
270 | struct page *page = pfn_to_online_page(pfn);
| ^~~~~~~~~~~~~~~~~~

include/asm-generic/memory_model.h:42:9: error: implicit declaration of function '__section_mem_map_addr' [-Werror=implicit-function-declaration]

42 | __section_mem_map_addr(__sec) + __pfn; \
| ^~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/memory_model.h:53:21: note: in expansion of macro '__pfn_to_page'
53 | #define pfn_to_page __pfn_to_page
| ^~~~~~~~~~~~~
include/linux/memory_hotplug.h:231:27: note: in expansion of macro 'pfn_to_page'
231 | ___page = pfn_to_page(pfn); \
| ^~~~~~~~~~~
include/linux/memory_hotplug.h:270:29: note: in expansion of macro 'pfn_to_online_page'
270 | struct page *page = pfn_to_online_page(pfn);
| ^~~~~~~~~~~~~~~~~~

include/linux/memory_hotplug.h:231:25: warning: assignment to 'struct page *' from 'long unsigned int' makes pointer from integer without a cast [-Wint-conversion]

231 | ___page = pfn_to_page(pfn); \
| ^
include/linux/memory_hotplug.h:270:29: note: in expansion of macro 'pfn_to_online_page'
270 | struct page *page = pfn_to_online_page(pfn);
| ^~~~~~~~~~~~~~~~~~
include/linux/mmzone.h: At top level:

include/linux/mmzone.h:1740:28: error: conflicting types for '__section_mem_map_addr'; have 'struct page *(struct mem_section *)'

1740 | static inline struct page *__section_mem_map_addr(struct mem_section *section)
| ^~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/memory_model.h:42:9: note: previous implicit declaration of '__section_mem_map_addr' with type 'int()'
42 | __section_mem_map_addr(__sec) + __pfn; \
| ^~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/memory_model.h:53:21: note: in expansion of macro '__pfn_to_page'
53 | #define pfn_to_page __pfn_to_page
| ^~~~~~~~~~~~~
include/linux/memory_hotplug.h:231:27: note: in expansion of macro 'pfn_to_page'
231 | ___page = pfn_to_page(pfn); \
| ^~~~~~~~~~~
include/linux/memory_hotplug.h:270:29: note: in expansion of macro 'pfn_to_online_page'
270 | struct page *page = pfn_to_online_page(pfn);
| ^~~~~~~~~~~~~~~~~~

include/linux/mmzone.h:1801:35: error: conflicting types for '__pfn_to_section'; have 'struct mem_section *(long unsigned int)'

1801 | static inline struct mem_section *__pfn_to_section(unsigned long pfn)
| ^~~~~~~~~~~~~~~~
include/asm-generic/memory_model.h:41:37: note: previous implicit declaration of '__pfn_to_section' with type 'int()'
41 | struct mem_section *__sec = __pfn_to_section(__pfn); \
| ^~~~~~~~~~~~~~~~
include/asm-generic/memory_model.h:53:21: note: in expansion of macro '__pfn_to_page'
53 | #define pfn_to_page __pfn_to_page
| ^~~~~~~~~~~~~
include/linux/memory_hotplug.h:231:27: note: in expansion of macro 'pfn_to_page'
231 | ___page = pfn_to_page(pfn); \
| ^~~~~~~~~~~
include/linux/memory_hotplug.h:270:29: note: in expansion of macro 'pfn_to_online_page'
270 | struct page *page = pfn_to_online_page(pfn);
| ^~~~~~~~~~~~~~~~~~

include/linux/mmzone.h:1839:19: error: static declaration of 'pfn_valid' follows non-static declaration

1839 | static inline int pfn_valid(unsigned long pfn)
| ^~~~~~~~~
include/linux/memory_hotplug.h:230:13: note: previous implicit declaration of 'pfn_valid' with type 'int()'
230 | if (pfn_valid(pfn)) \
| ^~~~~~~~~
include/linux/memory_hotplug.h:270:29: note: in expansion of macro 'pfn_to_online_page'
270 | struct page *page = pfn_to_online_page(pfn);
| ^~~~~~~~~~~~~~~~~~
arch/alpha/kernel/asm-offsets.c:15:6: warning: no previous prototype for 'foo' [-Wmissing-prototypes]
15 | void foo(void)
| ^~~
cc1: some warnings being treated as errors
make[2]: *** [scripts/Makefile.build:118: arch/alpha/kernel/asm-offsets.s] Error 1
make[2]: Target 'prepare' not remade because of errors.
make[1]: *** [Makefile:1272: prepare0] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:231: __sub-make] Error 2
make: Target 'prepare' not remade because of errors.

vim +230 include/linux/memory_hotplug.h

Thanks, it seems that we need use macro definition instead of inline function, will update in the next version.

b4a0215e11dcfe Kefeng Wang 2022-08-27 225
208d54e5513c0c Dave Hansen 2005-10-29 226 #else /* ! CONFIG_MEMORY_HOTPLUG */
2d070eab2e8270 Michal Hocko 2017-07-06 227 #define pfn_to_online_page(pfn) \
2d070eab2e8270 Michal Hocko 2017-07-06 228 ({ \
2d070eab2e8270 Michal Hocko 2017-07-06 229 struct page *___page = NULL; \
2d070eab2e8270 Michal Hocko 2017-07-06 @230 if (pfn_valid(pfn)) \
2d070eab2e8270 Michal Hocko 2017-07-06 @231 ___page = pfn_to_page(pfn); \
2d070eab2e8270 Michal Hocko 2017-07-06 232 ___page; \
2d070eab2e8270 Michal Hocko 2017-07-06 233 })
2d070eab2e8270 Michal Hocko 2017-07-06 234

Next message: Will Deacon: "Re: [PATCH] ftrace: Allow WITH_ARGS flavour of graph tracer with shadow call stack"
Previous message: Russell King (Oracle): "Re: [PATCH v6 net-next 3/5] drivers/net/phy: add connection between ethtool and phylib for PLCA"
In reply to: kernel test robot: "Re: [PATCH -next 1/8] mm: memory_hotplug: add pfn_to_online_folio()"
Next in thread: kernel test robot: "Re: [PATCH -next 1/8] mm: memory_hotplug: add pfn_to_online_folio()"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]