locking/qspinlock: Move __ARCH_SPIN_LOCK_UNLOCKED to qspinlock_types.h
Move the __ARCH_SPIN_LOCK_UNLOCKED definition from qspinlock.h into qspinlock_types.h. The definition of __ARCH_SPIN_LOCK_UNLOCKED comes from the build arch's include files; but on x86 when CONFIG_QUEUED_SPINLOCKS=y, it just it's defined in asm-generic/qspinlock.h. In most cases, this doesn't matter because linux/spinlock.h includes asm/spinlock.h, which for x86 includes asm-generic/qspinlock.h. However, any code that only includes linux/mutex.h will break, because it only includes asm/spinlock_types.h. For example, this breaks systemtap, which only includes mutex.h. Signed-off-by: Dan Streetman <dan.streetman@canonical.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Waiman Long <Waiman.Long@hpe.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Dan Streetman <ddstreet@ieee.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1455907767-17821-1-git-send-email-dan.streetman@canonical.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
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2 changed files with 5 additions and 5 deletions
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@ -119,11 +119,6 @@ static __always_inline bool virt_spin_lock(struct qspinlock *lock)
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}
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#endif
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/*
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* Initializier
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*/
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#define __ARCH_SPIN_LOCK_UNLOCKED { ATOMIC_INIT(0) }
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/*
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* Remapping spinlock architecture specific functions to the corresponding
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* queued spinlock functions.
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@ -32,6 +32,11 @@ typedef struct qspinlock {
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atomic_t val;
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} arch_spinlock_t;
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/*
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* Initializier
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*/
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#define __ARCH_SPIN_LOCK_UNLOCKED { ATOMIC_INIT(0) }
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/*
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* Bitfields in the atomic value:
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*
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