Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc: sparc64: Set HAVE_C_RECORDMCOUNT sparc32: unbreak arch_write_unlock() sparc64: remove unnecessary macros from spinlock_64.h
git-mirror · Aug 16, 2011 · edb5811 · edb5811
2 parents 291b63c + 178a296
commit edb5811
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Showing 3 changed files with 10 additions and 8 deletions.
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
@@ -55,6 +55,7 @@ config SPARC64
 	select PERF_USE_VMALLOC
 	select IRQ_PREFLOW_FASTEOI
 	select ARCH_HAVE_NMI_SAFE_CMPXCHG
+	select HAVE_C_RECORDMCOUNT
 
 config ARCH_DEFCONFIG
 	string

diff --git a/arch/sparc/include/asm/spinlock_32.h b/arch/sparc/include/asm/spinlock_32.h
@@ -131,6 +131,15 @@ static inline void arch_write_lock(arch_rwlock_t *rw)
 	*(volatile __u32 *)&lp->lock = ~0U;
 }
 
+static void inline arch_write_unlock(arch_rwlock_t *lock)
+{
+	__asm__ __volatile__(
+"	st		%%g0, [%0]"
+	: /* no outputs */
+	: "r" (lock)
+	: "memory");
+}
+
 static inline int arch_write_trylock(arch_rwlock_t *rw)
 {
 	unsigned int val;
@@ -175,8 +184,6 @@ static inline int __arch_read_trylock(arch_rwlock_t *rw)
 	res; \
 })
 
-#define arch_write_unlock(rw)	do { (rw)->lock = 0; } while(0)
-
 #define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock)
 #define arch_read_lock_flags(rw, flags)   arch_read_lock(rw)
 #define arch_write_lock_flags(rw, flags)  arch_write_lock(rw)

diff --git a/arch/sparc/include/asm/spinlock_64.h b/arch/sparc/include/asm/spinlock_64.h
@@ -210,14 +210,8 @@ static int inline arch_write_trylock(arch_rwlock_t *lock)
 	return result;
 }
 
-#define arch_read_lock(p)	arch_read_lock(p)
 #define arch_read_lock_flags(p, f) arch_read_lock(p)
-#define arch_read_trylock(p)	arch_read_trylock(p)
-#define arch_read_unlock(p)	arch_read_unlock(p)
-#define arch_write_lock(p)	arch_write_lock(p)
 #define arch_write_lock_flags(p, f) arch_write_lock(p)
-#define arch_write_unlock(p)	arch_write_unlock(p)
-#define arch_write_trylock(p)	arch_write_trylock(p)
 
 #define arch_read_can_lock(rw)		(!((rw)->lock & 0x80000000UL))
 #define arch_write_can_lock(rw)	(!(rw)->lock)