Commit-ID: b798df09f919c52823110a74bd568c6a4e98e6b2 Gitweb: http://git.kernel.org/tip/b798df09f919c52823110a74bd568c6a4e98e6b2 Author: Jeremy Fitzhardinge <jer...@goop.org> AuthorDate: Fri, 9 Aug 2013 19:51:51 +0530 Committer: H. Peter Anvin <h...@linux.intel.com> CommitDate: Fri, 9 Aug 2013 07:53:14 -0700
x86, ticketlock: Collapse a layer of functions Now that the paravirtualization layer doesn't exist at the spinlock level any more, we can collapse the __ticket_ functions into the arch_ functions. Signed-off-by: Jeremy Fitzhardinge <jer...@goop.org> Link: http://lkml.kernel.org/r/1376058122-8248-4-git-send-email-raghavendra...@linux.vnet.ibm.com Reviewed-by: Konrad Rzeszutek Wilk <konrad.w...@oracle.com> Tested-by: Attilio Rao <attilio....@citrix.com> Signed-off-by: Raghavendra K T <raghavendra...@linux.vnet.ibm.com> Acked-by: Ingo Molnar <mi...@kernel.org> Signed-off-by: H. Peter Anvin <h...@linux.intel.com> --- arch/x86/include/asm/spinlock.h | 35 +++++------------------------------ 1 file changed, 5 insertions(+), 30 deletions(-) diff --git a/arch/x86/include/asm/spinlock.h b/arch/x86/include/asm/spinlock.h index 4d54244..7442410 100644 --- a/arch/x86/include/asm/spinlock.h +++ b/arch/x86/include/asm/spinlock.h @@ -76,7 +76,7 @@ static __always_inline void __ticket_unlock_kick(struct arch_spinlock *lock, * in the high part, because a wide xadd increment of the low part would carry * up and contaminate the high part. */ -static __always_inline void __ticket_spin_lock(struct arch_spinlock *lock) +static __always_inline void arch_spin_lock(struct arch_spinlock *lock) { register struct __raw_tickets inc = { .tail = 1 }; @@ -96,7 +96,7 @@ static __always_inline void __ticket_spin_lock(struct arch_spinlock *lock) out: barrier(); /* make sure nothing creeps before the lock is taken */ } -static __always_inline int __ticket_spin_trylock(arch_spinlock_t *lock) +static __always_inline int arch_spin_trylock(arch_spinlock_t *lock) { arch_spinlock_t old, new; @@ -110,7 +110,7 @@ static __always_inline int __ticket_spin_trylock(arch_spinlock_t *lock) return cmpxchg(&lock->head_tail, old.head_tail, new.head_tail) == old.head_tail; } -static __always_inline void __ticket_spin_unlock(arch_spinlock_t *lock) +static __always_inline void arch_spin_unlock(arch_spinlock_t *lock) { __ticket_t next = lock->tickets.head + 1; @@ -118,46 +118,21 @@ static __always_inline void __ticket_spin_unlock(arch_spinlock_t *lock) __ticket_unlock_kick(lock, next); } -static inline int __ticket_spin_is_locked(arch_spinlock_t *lock) +static inline int arch_spin_is_locked(arch_spinlock_t *lock) { struct __raw_tickets tmp = ACCESS_ONCE(lock->tickets); return tmp.tail != tmp.head; } -static inline int __ticket_spin_is_contended(arch_spinlock_t *lock) +static inline int arch_spin_is_contended(arch_spinlock_t *lock) { struct __raw_tickets tmp = ACCESS_ONCE(lock->tickets); return (__ticket_t)(tmp.tail - tmp.head) > 1; } - -static inline int arch_spin_is_locked(arch_spinlock_t *lock) -{ - return __ticket_spin_is_locked(lock); -} - -static inline int arch_spin_is_contended(arch_spinlock_t *lock) -{ - return __ticket_spin_is_contended(lock); -} #define arch_spin_is_contended arch_spin_is_contended -static __always_inline void arch_spin_lock(arch_spinlock_t *lock) -{ - __ticket_spin_lock(lock); -} - -static __always_inline int arch_spin_trylock(arch_spinlock_t *lock) -{ - return __ticket_spin_trylock(lock); -} - -static __always_inline void arch_spin_unlock(arch_spinlock_t *lock) -{ - __ticket_spin_unlock(lock); -} - static __always_inline void arch_spin_lock_flags(arch_spinlock_t *lock, unsigned long flags) { -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
