Commit-ID: b82e530290a0437522720becaf4abdf8ca4cb7d2 Gitweb: http://git.kernel.org/tip/b82e530290a0437522720becaf4abdf8ca4cb7d2 Author: Dan Streetman <[email protected]> AuthorDate: Fri, 19 Feb 2016 13:49:27 -0500 Committer: Ingo Molnar <[email protected]> CommitDate: Mon, 29 Feb 2016 10:02:43 +0100
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 <[email protected]> Signed-off-by: Peter Zijlstra (Intel) <[email protected]> Acked-by: Waiman Long <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Arnd Bergmann <[email protected]> Cc: Dan Streetman <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Paul E. McKenney <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]> --- include/asm-generic/qspinlock.h | 5 ----- include/asm-generic/qspinlock_types.h | 5 +++++ 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/include/asm-generic/qspinlock.h b/include/asm-generic/qspinlock.h index 39e1cb2..35a52a8 100644 --- a/include/asm-generic/qspinlock.h +++ b/include/asm-generic/qspinlock.h @@ -120,11 +120,6 @@ static __always_inline bool virt_spin_lock(struct qspinlock *lock) #endif /* - * Initializier - */ -#define __ARCH_SPIN_LOCK_UNLOCKED { ATOMIC_INIT(0) } - -/* * Remapping spinlock architecture specific functions to the corresponding * queued spinlock functions. */ diff --git a/include/asm-generic/qspinlock_types.h b/include/asm-generic/qspinlock_types.h index 85f888e..034acd0 100644 --- a/include/asm-generic/qspinlock_types.h +++ b/include/asm-generic/qspinlock_types.h @@ -33,6 +33,11 @@ typedef struct qspinlock { } arch_spinlock_t; /* + * Initializier + */ +#define __ARCH_SPIN_LOCK_UNLOCKED { ATOMIC_INIT(0) } + +/* * Bitfields in the atomic value: * * When NR_CPUS < 16K
