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[Xen-devel] [PATCH 08/20] x86/ticketlock: collapse a layer of functions

To: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Subject: [Xen-devel] [PATCH 08/20] x86/ticketlock: collapse a layer of functions
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date: Wed, 3 Nov 2010 10:59:49 -0400
Cc: Nick Piggin <npiggin@xxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Srivatsa Vaddagiri <vatsa@xxxxxxxxxxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Jan Beulich <JBeulich@xxxxxxxxxx>, Linux Virtualization <virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx>, Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>, Avi Kivity <avi@xxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>
Delivery-date: Wed, 03 Nov 2010 08:06:52 -0700
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From: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>

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 <jeremy.fitzhardinge@xxxxxxxxxx>
---
 arch/x86/include/asm/spinlock.h |   35 +++++------------------------------
 1 files changed, 5 insertions(+), 30 deletions(-)

diff --git a/arch/x86/include/asm/spinlock.h b/arch/x86/include/asm/spinlock.h
index 06815f3..a79dfee 100644
--- a/arch/x86/include/asm/spinlock.h
+++ b/arch/x86/include/asm/spinlock.h
@@ -110,7 +110,7 @@ static __always_inline void __ticket_unlock_kick(struct 
arch_spinlock *lock, __t
                ____ticket_unlock_kick(lock, next);
 }
 
-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;
 
@@ -130,7 +130,7 @@ static __always_inline void __ticket_spin_lock(struct 
arch_spinlock *lock)
        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)
 {
        union {
                struct __raw_tickets tickets;
@@ -150,53 +150,28 @@ static __always_inline int 
__ticket_spin_trylock(arch_spinlock_t *lock)
        return ret;
 }
 
-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;
        __ticket_unlock_release(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 ((tmp.tail - tmp.head) & TICKET_MASK) > 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)
 {
-- 
1.7.2.3


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