tree:   https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git 
rcu/next
head:   cfc71fb0749122b29a70646a9a9522003418e5dc
commit: 7cf53ca0469972c1b953b68eb6a42e5d4fe75ef4 [55/57] srcutorture: Print 
Tiny SRCU reader statistics
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
        git checkout 7cf53ca0469972c1b953b68eb6a42e5d4fe75ef4
        # save the attached .config to linux build tree
        make.cross ARCH=xtensa 

All warnings (new ones prefixed by >>):

   In file included from include/uapi/linux/stddef.h:1:0,
                    from include/linux/stddef.h:4,
                    from include/uapi/linux/posix_types.h:4,
                    from include/uapi/linux/types.h:13,
                    from include/linux/types.h:5,
                    from kernel/rcu/rcutorture.c:25:
   kernel/rcu/rcutorture.c: In function 'srcu_torture_stats':
>> include/linux/compiler.h:316:8: warning: format '%ld' expects argument of 
>> type 'long int', but argument 5 has type 'int' [-Wformat=]
     union { typeof(x) __val; char __c[1]; } __u;   \
           ^
   include/linux/compiler.h:323:22: note: in expansion of macro '__READ_ONCE'
    #define READ_ONCE(x) __READ_ONCE(x, 1)
                         ^
>> include/linux/printk.h:297:35: note: in expansion of macro 'READ_ONCE'
     printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
                                      ^
   kernel/rcu/rcutorture.c:594:2: note: in expansion of macro 'pr_alert'
     pr_alert("%s%s Tiny SRCU per-CPU(idx=%d): (%ld,%ld)\n",
     ^
   include/linux/compiler.h:316:8: warning: format '%ld' expects argument of 
type 'long int', but argument 6 has type 'int' [-Wformat=]
     union { typeof(x) __val; char __c[1]; } __u;   \
           ^
   include/linux/compiler.h:323:22: note: in expansion of macro '__READ_ONCE'
    #define READ_ONCE(x) __READ_ONCE(x, 1)
                         ^
>> include/linux/printk.h:297:35: note: in expansion of macro 'READ_ONCE'
     printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
                                      ^
   kernel/rcu/rcutorture.c:594:2: note: in expansion of macro 'pr_alert'
     pr_alert("%s%s Tiny SRCU per-CPU(idx=%d): (%ld,%ld)\n",
     ^
--
   In file included from include/uapi/linux/stddef.h:1:0,
                    from include/linux/stddef.h:4,
                    from include/uapi/linux/posix_types.h:4,
                    from include/uapi/linux/types.h:13,
                    from include/linux/types.h:5,
                    from kernel//rcu/rcutorture.c:25:
   kernel//rcu/rcutorture.c: In function 'srcu_torture_stats':
>> include/linux/compiler.h:316:8: warning: format '%ld' expects argument of 
>> type 'long int', but argument 5 has type 'int' [-Wformat=]
     union { typeof(x) __val; char __c[1]; } __u;   \
           ^
   include/linux/compiler.h:323:22: note: in expansion of macro '__READ_ONCE'
    #define READ_ONCE(x) __READ_ONCE(x, 1)
                         ^
>> include/linux/printk.h:297:35: note: in expansion of macro 'READ_ONCE'
     printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
                                      ^
   kernel//rcu/rcutorture.c:594:2: note: in expansion of macro 'pr_alert'
     pr_alert("%s%s Tiny SRCU per-CPU(idx=%d): (%ld,%ld)\n",
     ^
   include/linux/compiler.h:316:8: warning: format '%ld' expects argument of 
type 'long int', but argument 6 has type 'int' [-Wformat=]
     union { typeof(x) __val; char __c[1]; } __u;   \
           ^
   include/linux/compiler.h:323:22: note: in expansion of macro '__READ_ONCE'
    #define READ_ONCE(x) __READ_ONCE(x, 1)
                         ^
>> include/linux/printk.h:297:35: note: in expansion of macro 'READ_ONCE'
     printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
                                      ^
   kernel//rcu/rcutorture.c:594:2: note: in expansion of macro 'pr_alert'
     pr_alert("%s%s Tiny SRCU per-CPU(idx=%d): (%ld,%ld)\n",
     ^

vim +/READ_ONCE +297 include/linux/printk.h

968ab183 Linus Torvalds 2010-11-15  281  
b6c035d0 Andi Kleen     2013-08-05  282  extern asmlinkage void 
dump_stack(void) __cold;
968ab183 Linus Torvalds 2010-11-15  283  
968ab183 Linus Torvalds 2010-11-15  284  #ifndef pr_fmt
968ab183 Linus Torvalds 2010-11-15  285  #define pr_fmt(fmt) fmt
968ab183 Linus Torvalds 2010-11-15  286  #endif
968ab183 Linus Torvalds 2010-11-15  287  
6e099f55 Dan Streetman  2014-06-04  288  /*
6e099f55 Dan Streetman  2014-06-04  289   * These can be used to print at the 
various log levels.
6e099f55 Dan Streetman  2014-06-04  290   * All of these will print 
unconditionally, although note that pr_debug()
6e099f55 Dan Streetman  2014-06-04  291   * and other debug macros are compiled 
out unless either DEBUG is defined
6e099f55 Dan Streetman  2014-06-04  292   * or CONFIG_DYNAMIC_DEBUG is set.
6e099f55 Dan Streetman  2014-06-04  293   */
a0cba217 Linus Torvalds 2016-08-09  294  #define pr_emerg(fmt, ...) \
a0cba217 Linus Torvalds 2016-08-09  295         printk(KERN_EMERG pr_fmt(fmt), 
##__VA_ARGS__)
a0cba217 Linus Torvalds 2016-08-09  296  #define pr_alert(fmt, ...) \
a0cba217 Linus Torvalds 2016-08-09 @297         printk(KERN_ALERT pr_fmt(fmt), 
##__VA_ARGS__)
a0cba217 Linus Torvalds 2016-08-09  298  #define pr_crit(fmt, ...) \
a0cba217 Linus Torvalds 2016-08-09  299         printk(KERN_CRIT pr_fmt(fmt), 
##__VA_ARGS__)
a0cba217 Linus Torvalds 2016-08-09  300  #define pr_err(fmt, ...) \
a0cba217 Linus Torvalds 2016-08-09  301         printk(KERN_ERR pr_fmt(fmt), 
##__VA_ARGS__)
a0cba217 Linus Torvalds 2016-08-09  302  #define pr_warning(fmt, ...) \
a0cba217 Linus Torvalds 2016-08-09  303         printk(KERN_WARNING 
pr_fmt(fmt), ##__VA_ARGS__)
a0cba217 Linus Torvalds 2016-08-09  304  #define pr_warn pr_warning
a0cba217 Linus Torvalds 2016-08-09  305  #define pr_notice(fmt, ...) \

:::::: The code at line 297 was first introduced by commit
:::::: a0cba2179ea4c1820fce2ee046b6ed90ecc56196 Revert "printk: create 
pr_<level> functions"

:::::: TO: Linus Torvalds <[email protected]>
:::::: CC: Linus Torvalds <[email protected]>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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