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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
hifive-unleashed-5.1
Linus Torvalds 2011-08-15 19:16:01 -07:00
parent 291b63c86a 178a296003
commit edb581110d
3 changed files with 10 additions and 8 deletions
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1
arch/sparc/Kconfig
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@ -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

11
arch/sparc/include/asm/spinlock_32.h
View File

@ -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)

6
arch/sparc/include/asm/spinlock_64.h
View File

@ -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)