[linux-next:master 10448/11214] arch/microblaze/include/asm/cacheflush.h:77:13: warning: 'flush_dcache_folio' defined but not used

[linux-next:master 10448/11214] arch/microblaze/include/asm/cacheflush.h:77:13: warning: 'flush_dcache_folio' defined but not used

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   47d9bb711707d15b19fad18c8e2b4b027a264a3a
commit: 2fcc20defd8a07415f6b346d941c22c50bbdada5 [10448/11214] microblaze: implement the new page table range API
config: microblaze-allnoconfig (https://download.01.org/0day-ci/archive/20230822/202308220106.VDWkCsdG-lkp@intel.com/config)
compiler: microblaze-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20230822/202308220106.VDWkCsdG-lkp@intel.com/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 <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202308220106.VDWkCsdG-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from kernel/signal.c:57:
>> arch/microblaze/include/asm/cacheflush.h:77:13: warning: 'flush_dcache_folio' defined but not used [-Wunused-function]
      77 | static void flush_dcache_folio(struct folio *folio)
         |             ^~~~~~~~~~~~~~~~~~


vim +/flush_dcache_folio +77 arch/microblaze/include/asm/cacheflush.h

    76	
  > 77	static void flush_dcache_folio(struct folio *folio)
    78	{
    79		unsigned long addr = folio_pfn(folio) << PAGE_SHIFT;
    80	
    81		flush_dcache_range(addr, addr + folio_size(folio));
    82	}
    83	#define flush_dcache_folio flush_dcache_folio
    84	

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

Re: [linux-next:master 10448/11214] arch/microblaze/include/asm/cacheflush.h:77:13: warning: 'flush_dcache_folio' defined but not used

[Matthew Wilcox]

On Tue, Aug 22, 2023 at 01:21:43AM +0800, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> head:   47d9bb711707d15b19fad18c8e2b4b027a264a3a
> commit: 2fcc20defd8a07415f6b346d941c22c50bbdada5 [10448/11214] microblaze: implement the new page table range API
> config: microblaze-allnoconfig (https://download.01.org/0day-ci/archive/20230822/202308220106.VDWkCsdG-lkp@intel.com/config)
> compiler: microblaze-linux-gcc (GCC) 12.3.0
> reproduce: (https://download.01.org/0day-ci/archive/20230822/202308220106.VDWkCsdG-lkp@intel.com/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 <lkp@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202308220106.VDWkCsdG-lkp@intel.com/
> 
> All warnings (new ones prefixed by >>):
> 
>    In file included from kernel/signal.c:57:
> >> arch/microblaze/include/asm/cacheflush.h:77:13: warning: 'flush_dcache_folio' defined but not used [-Wunused-function]
>       77 | static void flush_dcache_folio(struct folio *folio)

The bug is real, but I'm a little concerned that I got an email from
the testbot a few weeks ago suggesting:

microblaze           randconfig-r002-20230731   gcc
microblaze           randconfig-r011-20230731   gcc
microblaze           randconfig-r014-20230731   gcc

all passed.  Perhaps you could do allnoconfig testing more frequently?
Those tests should be quick to run since they are allnoconfig ...

Re: [linux-next:master 10448/11214] arch/microblaze/include/asm/cacheflush.h:77:13: warning: 'flush_dcache_folio' defined but not used

[Philip Li]

On Mon, Aug 21, 2023 at 07:17:33PM +0100, Matthew Wilcox wrote:
> On Tue, Aug 22, 2023 at 01:21:43AM +0800, kernel test robot wrote:
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> > head:   47d9bb711707d15b19fad18c8e2b4b027a264a3a
> > commit: 2fcc20defd8a07415f6b346d941c22c50bbdada5 [10448/11214] microblaze: implement the new page table range API
> > config: microblaze-allnoconfig (https://download.01.org/0day-ci/archive/20230822/202308220106.VDWkCsdG-lkp@intel.com/config)
> > compiler: microblaze-linux-gcc (GCC) 12.3.0
> > reproduce: (https://download.01.org/0day-ci/archive/20230822/202308220106.VDWkCsdG-lkp@intel.com/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 <lkp@intel.com>
> > | Closes: https://lore.kernel.org/oe-kbuild-all/202308220106.VDWkCsdG-lkp@intel.com/
> > 
> > All warnings (new ones prefixed by >>):
> > 
> >    In file included from kernel/signal.c:57:
> > >> arch/microblaze/include/asm/cacheflush.h:77:13: warning: 'flush_dcache_folio' defined but not used [-Wunused-function]
> >       77 | static void flush_dcache_folio(struct folio *folio)
> 
> The bug is real, but I'm a little concerned that I got an email from
> the testbot a few weeks ago suggesting:
> 
> microblaze           randconfig-r002-20230731   gcc
> microblaze           randconfig-r011-20230731   gcc
> microblaze           randconfig-r014-20230731   gcc
> 
> all passed.  Perhaps you could do allnoconfig testing more frequently?
> Those tests should be quick to run since they are allnoconfig ...

Got it, we will better balance the test resources to build test the
basic configs like allnoconfig in early time, and to include the results
in build summary mail.

Sorry for the "false safe" summary report for this commit.

>