Subject: Re: [PATCH v2 07/17] mm: Define VM_DROPPABLE for powerpc/32

From: kernel test robot <[email-masked]>
Date: Tue, 27 Aug 2024 05:34:16 +0800

Hi Christophe,

kernel test robot noticed the following build warnings:

[auto build test WARNING on powerpc/next]
[also build test WARNING on powerpc/fixes shuah-kselftest/next shuah-kselftest/fixes linus/master v6.11-rc5 next-20240826]
[cannot apply to crng-random/master]
[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/Christophe-Leroy/asm-generic-unaligned-h-Extract-common-header-for-vDSO/20240826-103525
base:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
patch link:    https://lore.kernel.org/r/315e3a268b165b6edad7dcb723b0d8a506a56c4e.1724309198.git.christophe.leroy%40csgroup.eu
patch subject: [PATCH v2 07/17] mm: Define VM_DROPPABLE for powerpc/32
config: um-randconfig-r122-20240826 (https://download.01.org/0day-ci/archive/20240827/[email-masked]/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240827/[email-masked]/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email-masked]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email-masked]/

sparse warnings: (new ones prefixed by >>)
   mm/debug_page_ref.c: note: in included file (through include/trace/events/page_ref.h):
>> include/trace/events/mmflags.h:168:5: sparse: sparse: undefined preprocessor identifier 'VM_DROPPABLE'
>> include/trace/events/mmflags.h:168:21: sparse: sparse: undefined preprocessor identifier 'VM_NONE'
   mm/debug_page_ref.c: note: in included file (through include/trace/events/page_ref.h, include/trace/define_trace.h, include/trace/events/page_ref.h):
>> include/trace/events/mmflags.h:168:5: sparse: sparse: undefined preprocessor identifier 'VM_DROPPABLE'
>> include/trace/events/mmflags.h:168:21: sparse: sparse: undefined preprocessor identifier 'VM_NONE'
   mm/debug_page_ref.c: note: in included file (through include/trace/events/page_ref.h, include/trace/trace_events.h, include/trace/define_trace.h, ...):
   include/trace/events/mmflags.h:169:10: sparse: sparse: preprocessor token IF_HAVE_VM_DROPPABLE redefined
   mm/debug_page_ref.c: note: in included file (through include/trace/events/page_ref.h):
   include/trace/events/mmflags.h:171:10: sparse: this was the original definition

vim +/VM_DROPPABLE +168 include/trace/events/mmflags.h

   167	
 > 168	#if VM_DROPPABLE != VM_NONE
   169	# define IF_HAVE_VM_DROPPABLE(flag, name) {flag, name},
   170	#else
   171	# define IF_HAVE_VM_DROPPABLE(flag, name)
   172	#endif
   173	

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