tree:   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/vdso
head:   74cd745f0ce8cc8b95722ee8fdf1d97ffb3afe0b
commit: 4b5e4f908855a66f0957bf35137ce3ee37c05230 [10/11] x86, vdso: Add a lot more dummy locking functions to vclock_gettime.c
config: x86_64-randconfig-x005-0217 (attached as .config)

All error/warnings:

   In file included from include/linux/spinlock.h:89:0,
                    from include/linux/seqlock.h:35,
                    from arch/x86/include/asm/vsyscall.h:4,
                    from arch/x86/vdso/vdso32/../vclock_gettime.c:20,
                    from arch/x86/vdso/vdso32/vclock_gettime.c:120:
>> include/linux/spinlock_up.h:28:20: error: conflicting types for 'arch_spin_lock'
    static inline void arch_spin_lock(arch_spinlock_t *lock)
                       ^
   arch/x86/vdso/vdso32/vclock_gettime.c:45:20: note: previous definition of 'arch_spin_lock' was here
    static inline void arch_spin_lock(void *lock)
                       ^
   In file included from include/linux/spinlock.h:89:0,
                    from include/linux/seqlock.h:35,
                    from arch/x86/include/asm/vsyscall.h:4,
                    from arch/x86/vdso/vdso32/../vclock_gettime.c:20,
                    from arch/x86/vdso/vdso32/vclock_gettime.c:120:
>> include/linux/spinlock_up.h:35:1: error: conflicting types for 'arch_spin_lock_flags'
    arch_spin_lock_flags(arch_spinlock_t *lock, unsigned long flags)
    ^
   arch/x86/vdso/vdso32/vclock_gettime.c:58:20: note: previous definition of 'arch_spin_lock_flags' was here
    static inline void arch_spin_lock_flags(void *lock,
                       ^
   In file included from include/linux/spinlock.h:89:0,
                    from include/linux/seqlock.h:35,
                    from arch/x86/include/asm/vsyscall.h:4,
                    from arch/x86/vdso/vdso32/../vclock_gettime.c:20,
                    from arch/x86/vdso/vdso32/vclock_gettime.c:120:
>> include/linux/spinlock_up.h:42:19: error: conflicting types for 'arch_spin_trylock'
    static inline int arch_spin_trylock(arch_spinlock_t *lock)
                      ^
   arch/x86/vdso/vdso32/vclock_gettime.c:49:19: note: previous definition of 'arch_spin_trylock' was here
    static inline int arch_spin_trylock(void *lock)
                      ^
   In file included from include/linux/spinlock.h:89:0,
                    from include/linux/seqlock.h:35,
                    from arch/x86/include/asm/vsyscall.h:4,
                    from arch/x86/vdso/vdso32/../vclock_gettime.c:20,
                    from arch/x86/vdso/vdso32/vclock_gettime.c:120:
>> include/linux/spinlock_up.h:52:20: error: conflicting types for 'arch_spin_unlock'
    static inline void arch_spin_unlock(arch_spinlock_t *lock)
                       ^
   arch/x86/vdso/vdso32/vclock_gettime.c:54:20: note: previous definition of 'arch_spin_unlock' was here
    static inline void arch_spin_unlock(void *lock)
                       ^

vim +/arch_spin_lock +28 include/linux/spinlock_up.h

386afc91 Linus Torvalds  2013-04-09  22   * into the locked sequence, resulting in non-atomic execution.
fb1c8f93 Ingo Molnar     2005-09-10  23   */
fb1c8f93 Ingo Molnar     2005-09-10  24  
fb1c8f93 Ingo Molnar     2005-09-10  25  #ifdef CONFIG_DEBUG_SPINLOCK
0199c4e6 Thomas Gleixner 2009-12-02  26  #define arch_spin_is_locked(x)		((x)->slock == 0)
fb1c8f93 Ingo Molnar     2005-09-10  27  
0199c4e6 Thomas Gleixner 2009-12-02 @28  static inline void arch_spin_lock(arch_spinlock_t *lock)
fb1c8f93 Ingo Molnar     2005-09-10  29  {
fb1c8f93 Ingo Molnar     2005-09-10  30  	lock->slock = 0;
386afc91 Linus Torvalds  2013-04-09  31  	barrier();
fb1c8f93 Ingo Molnar     2005-09-10  32  }
fb1c8f93 Ingo Molnar     2005-09-10  33  
fb1c8f93 Ingo Molnar     2005-09-10  34  static inline void
0199c4e6 Thomas Gleixner 2009-12-02 @35  arch_spin_lock_flags(arch_spinlock_t *lock, unsigned long flags)
fb1c8f93 Ingo Molnar     2005-09-10  36  {
fb1c8f93 Ingo Molnar     2005-09-10  37  	local_irq_save(flags);
fb1c8f93 Ingo Molnar     2005-09-10  38  	lock->slock = 0;
386afc91 Linus Torvalds  2013-04-09  39  	barrier();
fb1c8f93 Ingo Molnar     2005-09-10  40  }
fb1c8f93 Ingo Molnar     2005-09-10  41  
0199c4e6 Thomas Gleixner 2009-12-02 @42  static inline int arch_spin_trylock(arch_spinlock_t *lock)
fb1c8f93 Ingo Molnar     2005-09-10  43  {
fb1c8f93 Ingo Molnar     2005-09-10  44  	char oldval = lock->slock;
fb1c8f93 Ingo Molnar     2005-09-10  45  
fb1c8f93 Ingo Molnar     2005-09-10  46  	lock->slock = 0;
386afc91 Linus Torvalds  2013-04-09  47  	barrier();
fb1c8f93 Ingo Molnar     2005-09-10  48  
fb1c8f93 Ingo Molnar     2005-09-10  49  	return oldval > 0;
fb1c8f93 Ingo Molnar     2005-09-10  50  }
fb1c8f93 Ingo Molnar     2005-09-10  51  
0199c4e6 Thomas Gleixner 2009-12-02 @52  static inline void arch_spin_unlock(arch_spinlock_t *lock)
fb1c8f93 Ingo Molnar     2005-09-10  53  {
386afc91 Linus Torvalds  2013-04-09  54  	barrier();
fb1c8f93 Ingo Molnar     2005-09-10  55  	lock->slock = 1;

:::::: The code at line 28 was first introduced by commit
:::::: 0199c4e68d1f02894bdefe4b5d9e9ee4aedd8d62 locking: Convert __raw_spin* functions to arch_spin*

:::::: TO: Thomas Gleixner <tglx@linutronix.de>
:::::: CC: Thomas Gleixner <tglx@linutronix.de>

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