Re: locking/lockdep: Fix NMI handling

[kbuild test robot]

Hi Peter,

I love your patch! Yet something to improve:

[auto build test ERROR on tip/locking/core]
[also build test ERROR on v4.19-rc2 next-20180906]
[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/Peter-Zijlstra/locking-lockdep-Fix-NMI-handling/20180910-124306
config: i386-randconfig-x009-09101226 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   In file included from include/linux/spinlock_types.h:18:0,
                    from kernel/bounds.c:14:
   include/linux/lockdep.h: In function 'lockdep_off':
>> include/linux/lockdep.h:277:2: error: 'current' undeclared (first use in this function)
     current->lockdep_recursion++;
     ^~~~~~~
   include/linux/lockdep.h:277:2: note: each undeclared identifier is reported only once for each function it appears in
   include/linux/lockdep.h: In function 'lockdep_on':
   include/linux/lockdep.h:282:2: error: 'current' undeclared (first use in this function)
     current->lockdep_recursion--;
     ^~~~~~~
   make[2]: *** [kernel/bounds.s] Error 1
   make[2]: Target '__build' not remade because of errors.
   make[1]: *** [prepare0] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [sub-make] Error 2

vim +/current +277 include/linux/lockdep.h

   274	
   275	static inline void lockdep_off(void)
   276	{
 > 277		current->lockdep_recursion++;
   278	}
   279	

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