Hi Craig,

[auto build test ERROR on net-next/master]

url:    https://github.com/0day-ci/linux/commits/Craig-Gallek/Faster-SO_REUSEPORT/20151223-040911
config: arm-mvebu_v7_defconfig (attached as .config)
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=arm 

Note: the linux-review/Craig-Gallek/Faster-SO_REUSEPORT/20151223-040911 HEAD 660edb1fa7e1a2bf71ef9cbf4555cda4af95ea58 builds fine.
      It only hurts bisectibility.

All errors (new ones prefixed by >>):

   In file included from include/linux/spinlock_types.h:13:0,
                    from include/net/sock_reuseport.h:4,
                    from net/core/sock_reuseport.c:7:

quoted

arch/arm/include/asm/spinlock_types.h:12:3: error: unknown type name 'u32'

      u32 slock;
      ^

quoted

arch/arm/include/asm/spinlock_types.h:18:4: error: unknown type name 'u16'

       u16 owner;
       ^
   arch/arm/include/asm/spinlock_types.h:19:4: error: unknown type name 'u16'
       u16 next;
       ^
   arch/arm/include/asm/spinlock_types.h:28:2: error: unknown type name 'u32'
     u32 lock;
     ^

vim +/u32 +12 arch/arm/include/asm/spinlock_types.h

fb1c8f93 include/asm-arm/spinlock_types.h      Ingo Molnar 2005-09-10   6  #endif
fb1c8f93 include/asm-arm/spinlock_types.h      Ingo Molnar 2005-09-10   7  
546c2896 arch/arm/include/asm/spinlock_types.h Will Deacon 2012-07-06   8  #define TICKET_SHIFT	16
546c2896 arch/arm/include/asm/spinlock_types.h Will Deacon 2012-07-06   9  
fb1c8f93 include/asm-arm/spinlock_types.h      Ingo Molnar 2005-09-10  10  typedef struct {
546c2896 arch/arm/include/asm/spinlock_types.h Will Deacon 2012-07-06  11  	union {
546c2896 arch/arm/include/asm/spinlock_types.h Will Deacon 2012-07-06 @12  		u32 slock;
546c2896 arch/arm/include/asm/spinlock_types.h Will Deacon 2012-07-06  13  		struct __raw_tickets {
546c2896 arch/arm/include/asm/spinlock_types.h Will Deacon 2012-07-06  14  #ifdef __ARMEB__
546c2896 arch/arm/include/asm/spinlock_types.h Will Deacon 2012-07-06  15  			u16 next;
546c2896 arch/arm/include/asm/spinlock_types.h Will Deacon 2012-07-06  16  			u16 owner;
546c2896 arch/arm/include/asm/spinlock_types.h Will Deacon 2012-07-06  17  #else
546c2896 arch/arm/include/asm/spinlock_types.h Will Deacon 2012-07-06 @18  			u16 owner;
546c2896 arch/arm/include/asm/spinlock_types.h Will Deacon 2012-07-06  19  			u16 next;
546c2896 arch/arm/include/asm/spinlock_types.h Will Deacon 2012-07-06  20  #endif
546c2896 arch/arm/include/asm/spinlock_types.h Will Deacon 2012-07-06  21  		} tickets;

:::::: The code at line 12 was first introduced by commit
:::::: 546c2896a42202dbc7d02f7c6ec9948ac1bf511b ARM: 7446/1: spinlock: use ticket algorithm for ARMv6+ locking implementation

:::::: TO: Will Deacon [off-list ref]
:::::: CC: Russell King [off-list ref]

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