Hi Xiubo,

[auto build test WARNING on next-20170424]
[also build test WARNING on v4.11-rc8]
[cannot apply to v4.9-rc8 v4.9-rc7 v4.9-rc6]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/lixiubo-cmss-chinamobile-com/tcmu-Dynamic-growing-data-area-support/20170426-162910
config: xtensa-allmodconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 4.9.0
reproduce:
        wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=xtensa 

All warnings (new ones prefixed by >>):

   In file included from include/linux/printk.h:329:0,
                    from include/linux/kernel.h:13,
                    from include/linux/list.h:8,
                    from include/linux/preempt.h:10,
                    from include/linux/spinlock.h:50,
                    from drivers//target/target_core_user.c:21:
   drivers//target/target_core_user.c: In function 'is_ring_space_avail':
>> include/linux/dynamic_debug.h:74:16: warning: format '%zu' expects argument of type 'size_t', but argument 3 has type 'long unsigned int' [-Wformat=]
     static struct _ddebug  __aligned(8)   \
                   ^
   include/linux/dynamic_debug.h:110:2: note: in expansion of macro 'DEFINE_DYNAMIC_DEBUG_METADATA_KEY'
     DEFINE_DYNAMIC_DEBUG_METADATA_KEY(name, fmt, 0, 0)
     ^
   include/linux/dynamic_debug.h:124:2: note: in expansion of macro 'DEFINE_DYNAMIC_DEBUG_METADATA'
     DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt);  \
     ^
   include/linux/printk.h:333:2: note: in expansion of macro 'dynamic_pr_debug'
     dynamic_pr_debug(fmt, ##__VA_ARGS__)
     ^
   drivers//target/target_core_user.c:575:4: note: in expansion of macro 'pr_debug'
       pr_debug("no data space: only %zu available, but ask for %zu\n",
       ^
--
   In file included from include/linux/printk.h:329:0,
                    from include/linux/kernel.h:13,
                    from include/linux/list.h:8,
                    from include/linux/preempt.h:10,
                    from include/linux/spinlock.h:50,
                    from drivers/target/target_core_user.c:21:
   drivers/target/target_core_user.c: In function 'is_ring_space_avail':
>> include/linux/dynamic_debug.h:74:16: warning: format '%zu' expects argument of type 'size_t', but argument 3 has type 'long unsigned int' [-Wformat=]
     static struct _ddebug  __aligned(8)   \
                   ^
   include/linux/dynamic_debug.h:110:2: note: in expansion of macro 'DEFINE_DYNAMIC_DEBUG_METADATA_KEY'
     DEFINE_DYNAMIC_DEBUG_METADATA_KEY(name, fmt, 0, 0)
     ^
   include/linux/dynamic_debug.h:124:2: note: in expansion of macro 'DEFINE_DYNAMIC_DEBUG_METADATA'
     DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt);  \
     ^
   include/linux/printk.h:333:2: note: in expansion of macro 'dynamic_pr_debug'
     dynamic_pr_debug(fmt, ##__VA_ARGS__)
     ^
   drivers/target/target_core_user.c:575:4: note: in expansion of macro 'pr_debug'
       pr_debug("no data space: only %zu available, but ask for %zu\n",
       ^

vim +74 include/linux/dynamic_debug.h

b48420c1 Jim Cromie  2012-04-27  58  					const char *modname);
b48420c1 Jim Cromie  2012-04-27  59  
cbc46635 Joe Perches 2011-08-11  60  struct device;
cbc46635 Joe Perches 2011-08-11  61  
b9075fa9 Joe Perches 2011-10-31  62  extern __printf(3, 4)
906d2015 Joe Perches 2014-09-24  63  void __dynamic_dev_dbg(struct _ddebug *descriptor, const struct device *dev,
b9075fa9 Joe Perches 2011-10-31  64  		       const char *fmt, ...);
cbc46635 Joe Perches 2011-08-11  65  
ffa10cb4 Jason Baron 2011-08-11  66  struct net_device;
ffa10cb4 Jason Baron 2011-08-11  67  
b9075fa9 Joe Perches 2011-10-31  68  extern __printf(3, 4)
906d2015 Joe Perches 2014-09-24  69  void __dynamic_netdev_dbg(struct _ddebug *descriptor,
ffa10cb4 Jason Baron 2011-08-11  70  			  const struct net_device *dev,
b9075fa9 Joe Perches 2011-10-31  71  			  const char *fmt, ...);
ffa10cb4 Jason Baron 2011-08-11  72  
9049fc74 Jason Baron 2016-08-03  73  #define DEFINE_DYNAMIC_DEBUG_METADATA_KEY(name, fmt, key, init)	\
c0d2af63 Joe Perches 2012-10-18 @74  	static struct _ddebug  __aligned(8)			\
07613b0b Jason Baron 2011-10-04  75  	__attribute__((section("__verbose"))) name = {		\
07613b0b Jason Baron 2011-10-04  76  		.modname = KBUILD_MODNAME,			\
07613b0b Jason Baron 2011-10-04  77  		.function = __func__,				\
07613b0b Jason Baron 2011-10-04  78  		.filename = __FILE__,				\
07613b0b Jason Baron 2011-10-04  79  		.format = (fmt),				\
07613b0b Jason Baron 2011-10-04  80  		.lineno = __LINE__,				\
07613b0b Jason Baron 2011-10-04  81  		.flags = _DPRINTK_FLAGS_DEFAULT,		\
9049fc74 Jason Baron 2016-08-03  82  		dd_key_init(key, init)				\

:::::: The code at line 74 was first introduced by commit
:::::: c0d2af637863940b1a4fb208224ca7acb905c39f dynamic_debug: Remove unnecessary __used

:::::: TO: Joe Perches <joe@perches.com>
:::::: CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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