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* [printk:for-5.15-printk-index 4/5] kernel/printk/index.c:140:6: warning: no previous prototype for 'pi_create_file'
@ 2021-07-19 15:33 kernel test robot
  2021-07-20 12:02 ` Chris Down
  0 siblings, 1 reply; 4+ messages in thread
From: kernel test robot @ 2021-07-19 15:33 UTC (permalink / raw)
  To: Chris Down; +Cc: kbuild-all, linux-kernel, Petr Mladek

[-- Attachment #1: Type: text/plain, Size: 2013 bytes --]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/printk/linux.git for-5.15-printk-index
head:   ad7d61f159db73974f1b0352f21afe04b0bbd920
commit: 337015573718b161891a3473d25f59273f2e626b [4/5] printk: Userspace format indexing support
config: arc-allyesconfig (attached as .config)
compiler: arceb-elf-gcc (GCC) 10.3.0
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://git.kernel.org/pub/scm/linux/kernel/git/printk/linux.git/commit/?id=337015573718b161891a3473d25f59273f2e626b
        git remote add printk https://git.kernel.org/pub/scm/linux/kernel/git/printk/linux.git
        git fetch --no-tags printk for-5.15-printk-index
        git checkout 337015573718b161891a3473d25f59273f2e626b
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=arc 

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 >>):

>> kernel/printk/index.c:140:6: warning: no previous prototype for 'pi_create_file' [-Wmissing-prototypes]
     140 | void pi_create_file(struct module *mod)
         |      ^~~~~~~~~~~~~~
>> kernel/printk/index.c:146:6: warning: no previous prototype for 'pi_remove_file' [-Wmissing-prototypes]
     146 | void pi_remove_file(struct module *mod)
         |      ^~~~~~~~~~~~~~


vim +/pi_create_file +140 kernel/printk/index.c

   139	
 > 140	void pi_create_file(struct module *mod)
   141	{
   142		debugfs_create_file(pi_get_module_name(mod), 0444, dfs_index,
   143					       mod, &dfs_index_fops);
   144	}
   145	
 > 146	void pi_remove_file(struct module *mod)
   147	{
   148		debugfs_remove(debugfs_lookup(pi_get_module_name(mod), dfs_index));
   149	}
   150	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 68530 bytes --]

^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [printk:for-5.15-printk-index 4/5] kernel/printk/index.c:140:6: warning: no previous prototype for 'pi_create_file'
  2021-07-19 15:33 [printk:for-5.15-printk-index 4/5] kernel/printk/index.c:140:6: warning: no previous prototype for 'pi_create_file' kernel test robot
@ 2021-07-20 12:02 ` Chris Down
  2021-07-21  8:59   ` Petr Mladek
  2021-07-23 11:19   ` Petr Mladek
  0 siblings, 2 replies; 4+ messages in thread
From: Chris Down @ 2021-07-20 12:02 UTC (permalink / raw)
  To: kernel test robot; +Cc: kbuild-all, linux-kernel, Petr Mladek

kernel test robot writes:
>tree:   https://git.kernel.org/pub/scm/linux/kernel/git/printk/linux.git for-5.15-printk-index
>head:   ad7d61f159db73974f1b0352f21afe04b0bbd920
>commit: 337015573718b161891a3473d25f59273f2e626b [4/5] printk: Userspace format indexing support
>config: arc-allyesconfig (attached as .config)
>compiler: arceb-elf-gcc (GCC) 10.3.0
>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://git.kernel.org/pub/scm/linux/kernel/git/printk/linux.git/commit/?id=337015573718b161891a3473d25f59273f2e626b
>        git remote add printk https://git.kernel.org/pub/scm/linux/kernel/git/printk/linux.git
>        git fetch --no-tags printk for-5.15-printk-index
>        git checkout 337015573718b161891a3473d25f59273f2e626b
>        # save the attached .config to linux build tree
>        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=arc
>
>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 >>):
>
>>> kernel/printk/index.c:140:6: warning: no previous prototype for 'pi_create_file' [-Wmissing-prototypes]
>     140 | void pi_create_file(struct module *mod)
>         |      ^~~~~~~~~~~~~~
>>> kernel/printk/index.c:146:6: warning: no previous prototype for 'pi_remove_file' [-Wmissing-prototypes]
>     146 | void pi_remove_file(struct module *mod)
>         |      ^~~~~~~~~~~~~~

Ah, I missed `static inline', which causes the compiler to think we want to 
export it even though we don't.

diff --git kernel/printk/index.c kernel/printk/index.c
index ca062f5e1779..e340e0a8b847 100644
--- kernel/printk/index.c
+++ kernel/printk/index.c
@@ -137,13 +137,13 @@ static const char *pi_get_module_name(struct module *mod)
  }
  #endif
  
-void pi_create_file(struct module *mod)
+static inline void pi_create_file(struct module *mod)
  {
  	debugfs_create_file(pi_get_module_name(mod), 0444, dfs_index,
  				       mod, &dfs_index_fops);
  }
  
-void pi_remove_file(struct module *mod)
+static inline void pi_remove_file(struct module *mod)
  {
  	debugfs_remove(debugfs_lookup(pi_get_module_name(mod), dfs_index));
  }

^ permalink raw reply related	[flat|nested] 4+ messages in thread

* Re: [printk:for-5.15-printk-index 4/5] kernel/printk/index.c:140:6: warning: no previous prototype for 'pi_create_file'
  2021-07-20 12:02 ` Chris Down
@ 2021-07-21  8:59   ` Petr Mladek
  2021-07-23 11:19   ` Petr Mladek
  1 sibling, 0 replies; 4+ messages in thread
From: Petr Mladek @ 2021-07-21  8:59 UTC (permalink / raw)
  To: Chris Down; +Cc: kernel test robot, kbuild-all, linux-kernel

On Tue 2021-07-20 13:02:33, Chris Down wrote:
> kernel test robot writes:
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/printk/linux.git for-5.15-printk-index
> > head:   ad7d61f159db73974f1b0352f21afe04b0bbd920
> > commit: 337015573718b161891a3473d25f59273f2e626b [4/5] printk: Userspace format indexing support
> > config: arc-allyesconfig (attached as .config)
> > compiler: arceb-elf-gcc (GCC) 10.3.0
> > 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://git.kernel.org/pub/scm/linux/kernel/git/printk/linux.git/commit/?id=337015573718b161891a3473d25f59273f2e626b
> >        git remote add printk https://git.kernel.org/pub/scm/linux/kernel/git/printk/linux.git
> >        git fetch --no-tags printk for-5.15-printk-index
> >        git checkout 337015573718b161891a3473d25f59273f2e626b
> >        # save the attached .config to linux build tree
> >        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=arc
> > 
> > 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 >>):
> > 
> > > > kernel/printk/index.c:140:6: warning: no previous prototype for 'pi_create_file' [-Wmissing-prototypes]
> >     140 | void pi_create_file(struct module *mod)
> >         |      ^~~~~~~~~~~~~~
> > > > kernel/printk/index.c:146:6: warning: no previous prototype for 'pi_remove_file' [-Wmissing-prototypes]
> >     146 | void pi_remove_file(struct module *mod)
> >         |      ^~~~~~~~~~~~~~
> 
> Ah, I missed `static inline', which causes the compiler to think we want to
> export it even though we don't.
> 
> diff --git kernel/printk/index.c kernel/printk/index.c
> index ca062f5e1779..e340e0a8b847 100644
> --- kernel/printk/index.c
> +++ kernel/printk/index.c
> @@ -137,13 +137,13 @@ static const char *pi_get_module_name(struct module *mod)
>  }
>  #endif
> -void pi_create_file(struct module *mod)
> +static inline void pi_create_file(struct module *mod)
>  {
>  	debugfs_create_file(pi_get_module_name(mod), 0444, dfs_index,
>  				       mod, &dfs_index_fops);
>  }
> -void pi_remove_file(struct module *mod)
> +static inline void pi_remove_file(struct module *mod)
>  {
>  	debugfs_remove(debugfs_lookup(pi_get_module_name(mod), dfs_index));
>  }

Chris, please send this one as a proper patch as well.

Best Regards,
Petr

^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [printk:for-5.15-printk-index 4/5] kernel/printk/index.c:140:6: warning: no previous prototype for 'pi_create_file'
  2021-07-20 12:02 ` Chris Down
  2021-07-21  8:59   ` Petr Mladek
@ 2021-07-23 11:19   ` Petr Mladek
  1 sibling, 0 replies; 4+ messages in thread
From: Petr Mladek @ 2021-07-23 11:19 UTC (permalink / raw)
  To: Chris Down; +Cc: kernel test robot, kbuild-all, linux-kernel

On Tue 2021-07-20 13:02:33, Chris Down wrote:
> kernel test robot writes:
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/printk/linux.git for-5.15-printk-index
> > head:   ad7d61f159db73974f1b0352f21afe04b0bbd920
> > commit: 337015573718b161891a3473d25f59273f2e626b [4/5] printk: Userspace format indexing support
> > config: arc-allyesconfig (attached as .config)
> > compiler: arceb-elf-gcc (GCC) 10.3.0
> > 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://git.kernel.org/pub/scm/linux/kernel/git/printk/linux.git/commit/?id=337015573718b161891a3473d25f59273f2e626b
> >        git remote add printk https://git.kernel.org/pub/scm/linux/kernel/git/printk/linux.git
> >        git fetch --no-tags printk for-5.15-printk-index
> >        git checkout 337015573718b161891a3473d25f59273f2e626b
> >        # save the attached .config to linux build tree
> >        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=arc
> > 
> > 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 >>):
> > 
> > > > kernel/printk/index.c:140:6: warning: no previous prototype for 'pi_create_file' [-Wmissing-prototypes]
> >     140 | void pi_create_file(struct module *mod)
> >         |      ^~~~~~~~~~~~~~
> > > > kernel/printk/index.c:146:6: warning: no previous prototype for 'pi_remove_file' [-Wmissing-prototypes]
> >     146 | void pi_remove_file(struct module *mod)
> >         |      ^~~~~~~~~~~~~~
> 
> Ah, I missed `static inline', which causes the compiler to think we want to
> export it even though we don't.
> 
> diff --git kernel/printk/index.c kernel/printk/index.c
> index ca062f5e1779..e340e0a8b847 100644
> --- kernel/printk/index.c
> +++ kernel/printk/index.c
> @@ -137,13 +137,13 @@ static const char *pi_get_module_name(struct module *mod)
>  }
>  #endif
> -void pi_create_file(struct module *mod)
> +static inline void pi_create_file(struct module *mod)
>  {
>  	debugfs_create_file(pi_get_module_name(mod), 0444, dfs_index,
>  				       mod, &dfs_index_fops);
>  }
> -void pi_remove_file(struct module *mod)
> +static inline void pi_remove_file(struct module *mod)
>  {
>  	debugfs_remove(debugfs_lookup(pi_get_module_name(mod), dfs_index));
>  }

I have just pushed this fix into printk/linux.git,
branch for-5.15-printk-index.

Well, I just added the "static" keyword. Let the compiler decide
about inlining. There is no need to enforce it.

Best Regards,
Petr

^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2021-07-23 11:19 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2021-07-19 15:33 [printk:for-5.15-printk-index 4/5] kernel/printk/index.c:140:6: warning: no previous prototype for 'pi_create_file' kernel test robot
2021-07-20 12:02 ` Chris Down
2021-07-21  8:59   ` Petr Mladek
2021-07-23 11:19   ` Petr Mladek

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