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* arch/arm/mm/copypage-fa.c:38:6: warning: no previous prototype for function 'fa_copy_user_highpage'
@ 2023-03-11 19:29 kernel test robot
  0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2023-03-11 19:29 UTC (permalink / raw)
  To: Nathan Chancellor
  Cc: llvm, oe-kbuild-all, linux-kernel, Russell King (Oracle)

Hi Nathan,

FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   ef5f68cc1f829b492b19cd4df5af4454aa816b93
commit: 5eb6e280432ddc9b755193552f3a070da8d7455c ARM: 9289/1: Allow pre-ARMv5 builds with ld.lld 16.0.0 and newer
date:   6 weeks ago
config: arm-randconfig-r014-20230312 (https://download.01.org/0day-ci/archive/20230312/202303120327.m6pfGEGi-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 67409911353323ca5edf2049ef0df54132fa1ca7)
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
        # install arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5eb6e280432ddc9b755193552f3a070da8d7455c
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 5eb6e280432ddc9b755193552f3a070da8d7455c
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash arch/arm/mm/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303120327.m6pfGEGi-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> arch/arm/mm/copypage-fa.c:38:6: warning: no previous prototype for function 'fa_copy_user_highpage' [-Wmissing-prototypes]
   void fa_copy_user_highpage(struct page *to, struct page *from,
        ^
   arch/arm/mm/copypage-fa.c:38:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void fa_copy_user_highpage(struct page *to, struct page *from,
   ^
   static 
>> arch/arm/mm/copypage-fa.c:55:6: warning: no previous prototype for function 'fa_clear_user_highpage' [-Wmissing-prototypes]
   void fa_clear_user_highpage(struct page *page, unsigned long vaddr)
        ^
   arch/arm/mm/copypage-fa.c:55:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void fa_clear_user_highpage(struct page *page, unsigned long vaddr)
   ^
   static 
   2 warnings generated.


vim +/fa_copy_user_highpage +38 arch/arm/mm/copypage-fa.c

28853ac8fe5221 Paulius Zaleckas 2009-03-25  37  
28853ac8fe5221 Paulius Zaleckas 2009-03-25 @38  void fa_copy_user_highpage(struct page *to, struct page *from,
a3be6327163c22 Hans Ulli Kroll  2010-04-27  39  	unsigned long vaddr, struct vm_area_struct *vma)
28853ac8fe5221 Paulius Zaleckas 2009-03-25  40  {
28853ac8fe5221 Paulius Zaleckas 2009-03-25  41  	void *kto, *kfrom;
28853ac8fe5221 Paulius Zaleckas 2009-03-25  42  
5472e862de2bc4 Cong Wang        2011-11-25  43  	kto = kmap_atomic(to);
5472e862de2bc4 Cong Wang        2011-11-25  44  	kfrom = kmap_atomic(from);
28853ac8fe5221 Paulius Zaleckas 2009-03-25  45  	fa_copy_user_page(kto, kfrom);
5472e862de2bc4 Cong Wang        2011-11-25  46  	kunmap_atomic(kfrom);
5472e862de2bc4 Cong Wang        2011-11-25  47  	kunmap_atomic(kto);
28853ac8fe5221 Paulius Zaleckas 2009-03-25  48  }
28853ac8fe5221 Paulius Zaleckas 2009-03-25  49  
28853ac8fe5221 Paulius Zaleckas 2009-03-25  50  /*
28853ac8fe5221 Paulius Zaleckas 2009-03-25  51   * Faraday optimised clear_user_page
28853ac8fe5221 Paulius Zaleckas 2009-03-25  52   *
28853ac8fe5221 Paulius Zaleckas 2009-03-25  53   * Same story as above.
28853ac8fe5221 Paulius Zaleckas 2009-03-25  54   */
28853ac8fe5221 Paulius Zaleckas 2009-03-25 @55  void fa_clear_user_highpage(struct page *page, unsigned long vaddr)
28853ac8fe5221 Paulius Zaleckas 2009-03-25  56  {
5472e862de2bc4 Cong Wang        2011-11-25  57  	void *ptr, *kaddr = kmap_atomic(page);
28853ac8fe5221 Paulius Zaleckas 2009-03-25  58  	asm volatile("\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  59  	mov	r1, %2				@ 1\n\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  60  	mov	r2, #0				@ 1\n\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  61  	mov	r3, #0				@ 1\n\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  62  	mov	ip, #0				@ 1\n\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  63  	mov	lr, #0				@ 1\n\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  64  1:	stmia	%0, {r2, r3, ip, lr}		@ 4\n\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  65  	mcr	p15, 0, %0, c7, c14, 1		@ 1   clean and invalidate D line\n\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  66  	add	%0, %0, #16			@ 1\n\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  67  	stmia	%0, {r2, r3, ip, lr}		@ 4\n\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  68  	mcr	p15, 0, %0, c7, c14, 1		@ 1   clean and invalidate D line\n\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  69  	add	%0, %0, #16			@ 1\n\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  70  	subs	r1, r1, #1			@ 1\n\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  71  	bne	1b				@ 1\n\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  72  	mcr	p15, 0, r1, c7, c10, 4		@ 1   drain WB"
28853ac8fe5221 Paulius Zaleckas 2009-03-25  73  	: "=r" (ptr)
28853ac8fe5221 Paulius Zaleckas 2009-03-25  74  	: "0" (kaddr), "I" (PAGE_SIZE / 32)
28853ac8fe5221 Paulius Zaleckas 2009-03-25  75  	: "r1", "r2", "r3", "ip", "lr");
5472e862de2bc4 Cong Wang        2011-11-25  76  	kunmap_atomic(kaddr);
28853ac8fe5221 Paulius Zaleckas 2009-03-25  77  }
28853ac8fe5221 Paulius Zaleckas 2009-03-25  78  

:::::: The code at line 38 was first introduced by commit
:::::: 28853ac8fe5221de74a14f1182d7b2b383dfd85c ARM: Add support for FA526 v2

:::::: TO: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
:::::: CC: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests

^ permalink raw reply	[flat|nested] 2+ messages in thread
* arch/arm/mm/copypage-fa.c:38:6: warning: no previous prototype for function 'fa_copy_user_highpage'
@ 2023-02-25  5:08 kernel test robot
  0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2023-02-25  5:08 UTC (permalink / raw)
  To: Nathan Chancellor
  Cc: llvm, oe-kbuild-all, linux-kernel, Russell King (Oracle)

Hi Nathan,

FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   595fa4e313fee3c0b69c10bbed6fffb803237306
commit: 5eb6e280432ddc9b755193552f3a070da8d7455c ARM: 9289/1: Allow pre-ARMv5 builds with ld.lld 16.0.0 and newer
date:   4 weeks ago
config: arm-buildonly-randconfig-r004-20230225 (https://download.01.org/0day-ci/archive/20230225/202302251326.LmxaMXY3-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project db89896bbbd2251fff457699635acbbedeead27f)
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
        # install arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5eb6e280432ddc9b755193552f3a070da8d7455c
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 5eb6e280432ddc9b755193552f3a070da8d7455c
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash arch/arm/mm/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202302251326.LmxaMXY3-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> arch/arm/mm/copypage-fa.c:38:6: warning: no previous prototype for function 'fa_copy_user_highpage' [-Wmissing-prototypes]
   void fa_copy_user_highpage(struct page *to, struct page *from,
        ^
   arch/arm/mm/copypage-fa.c:38:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void fa_copy_user_highpage(struct page *to, struct page *from,
   ^
   static 
>> arch/arm/mm/copypage-fa.c:55:6: warning: no previous prototype for function 'fa_clear_user_highpage' [-Wmissing-prototypes]
   void fa_clear_user_highpage(struct page *page, unsigned long vaddr)
        ^
   arch/arm/mm/copypage-fa.c:55:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void fa_clear_user_highpage(struct page *page, unsigned long vaddr)
   ^
   static 
   2 warnings generated.


vim +/fa_copy_user_highpage +38 arch/arm/mm/copypage-fa.c

28853ac8fe5221 Paulius Zaleckas 2009-03-25  37  
28853ac8fe5221 Paulius Zaleckas 2009-03-25 @38  void fa_copy_user_highpage(struct page *to, struct page *from,
a3be6327163c22 Hans Ulli Kroll  2010-04-27  39  	unsigned long vaddr, struct vm_area_struct *vma)
28853ac8fe5221 Paulius Zaleckas 2009-03-25  40  {
28853ac8fe5221 Paulius Zaleckas 2009-03-25  41  	void *kto, *kfrom;
28853ac8fe5221 Paulius Zaleckas 2009-03-25  42  
5472e862de2bc4 Cong Wang        2011-11-25  43  	kto = kmap_atomic(to);
5472e862de2bc4 Cong Wang        2011-11-25  44  	kfrom = kmap_atomic(from);
28853ac8fe5221 Paulius Zaleckas 2009-03-25  45  	fa_copy_user_page(kto, kfrom);
5472e862de2bc4 Cong Wang        2011-11-25  46  	kunmap_atomic(kfrom);
5472e862de2bc4 Cong Wang        2011-11-25  47  	kunmap_atomic(kto);
28853ac8fe5221 Paulius Zaleckas 2009-03-25  48  }
28853ac8fe5221 Paulius Zaleckas 2009-03-25  49  
28853ac8fe5221 Paulius Zaleckas 2009-03-25  50  /*
28853ac8fe5221 Paulius Zaleckas 2009-03-25  51   * Faraday optimised clear_user_page
28853ac8fe5221 Paulius Zaleckas 2009-03-25  52   *
28853ac8fe5221 Paulius Zaleckas 2009-03-25  53   * Same story as above.
28853ac8fe5221 Paulius Zaleckas 2009-03-25  54   */
28853ac8fe5221 Paulius Zaleckas 2009-03-25 @55  void fa_clear_user_highpage(struct page *page, unsigned long vaddr)
28853ac8fe5221 Paulius Zaleckas 2009-03-25  56  {
5472e862de2bc4 Cong Wang        2011-11-25  57  	void *ptr, *kaddr = kmap_atomic(page);
28853ac8fe5221 Paulius Zaleckas 2009-03-25  58  	asm volatile("\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  59  	mov	r1, %2				@ 1\n\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  60  	mov	r2, #0				@ 1\n\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  61  	mov	r3, #0				@ 1\n\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  62  	mov	ip, #0				@ 1\n\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  63  	mov	lr, #0				@ 1\n\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  64  1:	stmia	%0, {r2, r3, ip, lr}		@ 4\n\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  65  	mcr	p15, 0, %0, c7, c14, 1		@ 1   clean and invalidate D line\n\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  66  	add	%0, %0, #16			@ 1\n\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  67  	stmia	%0, {r2, r3, ip, lr}		@ 4\n\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  68  	mcr	p15, 0, %0, c7, c14, 1		@ 1   clean and invalidate D line\n\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  69  	add	%0, %0, #16			@ 1\n\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  70  	subs	r1, r1, #1			@ 1\n\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  71  	bne	1b				@ 1\n\
28853ac8fe5221 Paulius Zaleckas 2009-03-25  72  	mcr	p15, 0, r1, c7, c10, 4		@ 1   drain WB"
28853ac8fe5221 Paulius Zaleckas 2009-03-25  73  	: "=r" (ptr)
28853ac8fe5221 Paulius Zaleckas 2009-03-25  74  	: "0" (kaddr), "I" (PAGE_SIZE / 32)
28853ac8fe5221 Paulius Zaleckas 2009-03-25  75  	: "r1", "r2", "r3", "ip", "lr");
5472e862de2bc4 Cong Wang        2011-11-25  76  	kunmap_atomic(kaddr);
28853ac8fe5221 Paulius Zaleckas 2009-03-25  77  }
28853ac8fe5221 Paulius Zaleckas 2009-03-25  78  

:::::: The code at line 38 was first introduced by commit
:::::: 28853ac8fe5221de74a14f1182d7b2b383dfd85c ARM: Add support for FA526 v2

:::::: TO: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
:::::: CC: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests

^ permalink raw reply	[flat|nested] 2+ messages in thread
end of thread, other threads:[~2023-03-11 19:30 UTC | newest]

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