AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-11-30 14:16:41 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

sparc: Make atomic locks raw

Browse Source 
SPIN_LOCK_UNLOCKED is deprecated and the locks which protect the
atomic operations have no dependency on other locks and the code is
well tested so the conversion to a raw lock is safe.

Make the lock array static while at it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thomas Gleixner 2009-11-06 22:16:32 -08:00 committed by David S. Miller
parent ddaf1b27ed
commit 4df286e529
1 changed files with 18 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
arch/sparc/lib/atomic32.c
View File

@ -15,8 +15,8 @@
#define ATOMIC_HASH_SIZE 4
#define ATOMIC_HASH(a) (&__atomic_hash[(((unsigned long)a)>>8) & (ATOMIC_HASH_SIZE-1)])
spinlock_t __atomic_hash[ATOMIC_HASH_SIZE] = {
[0 ... (ATOMIC_HASH_SIZE-1)] = SPIN_LOCK_UNLOCKED
static raw_spinlock_t __atomic_hash[ATOMIC_HASH_SIZE] = {
[0 ... (ATOMIC_HASH_SIZE-1)] = __RAW_SPIN_LOCK_UNLOCKED
};
#else /* SMP */
@ -31,11 +31,11 @@ int __atomic_add_return(int i, atomic_t *v)
{
int ret;
unsigned long flags;
spin_lock_irqsave(ATOMIC_HASH(v), flags);
__raw_spin_lock_irqsave(ATOMIC_HASH(v), flags);
ret = (v->counter += i);
spin_unlock_irqrestore(ATOMIC_HASH(v), flags);
__raw_spin_unlock_irqrestore(ATOMIC_HASH(v), flags);
return ret;
}
EXPORT_SYMBOL(__atomic_add_return);
@ -45,12 +45,12 @@ int atomic_cmpxchg(atomic_t *v, int old, int new)
int ret;
unsigned long flags;
spin_lock_irqsave(ATOMIC_HASH(v), flags);
__raw_spin_lock_irqsave(ATOMIC_HASH(v), flags);
ret = v->counter;
if (likely(ret == old))
v->counter = new;
spin_unlock_irqrestore(ATOMIC_HASH(v), flags);
__raw_spin_unlock_irqrestore(ATOMIC_HASH(v), flags);
return ret;
}
EXPORT_SYMBOL(atomic_cmpxchg);
@ -60,11 +60,11 @@ int atomic_add_unless(atomic_t *v, int a, int u)
int ret;
unsigned long flags;
spin_lock_irqsave(ATOMIC_HASH(v), flags);
__raw_spin_lock_irqsave(ATOMIC_HASH(v), flags);
ret = v->counter;
if (ret != u)
v->counter += a;
spin_unlock_irqrestore(ATOMIC_HASH(v), flags);
__raw_spin_unlock_irqrestore(ATOMIC_HASH(v), flags);
return ret != u;
}
EXPORT_SYMBOL(atomic_add_unless);
@ -74,9 +74,9 @@ void atomic_set(atomic_t *v, int i)
{
unsigned long flags;
spin_lock_irqsave(ATOMIC_HASH(v), flags);
__raw_spin_lock_irqsave(ATOMIC_HASH(v), flags);
v->counter = i;
spin_unlock_irqrestore(ATOMIC_HASH(v), flags);
__raw_spin_unlock_irqrestore(ATOMIC_HASH(v), flags);
}
EXPORT_SYMBOL(atomic_set);
@ -84,10 +84,10 @@ unsigned long ___set_bit(unsigned long *addr, unsigned long mask)
{
unsigned long old, flags;
spin_lock_irqsave(ATOMIC_HASH(addr), flags);
__raw_spin_lock_irqsave(ATOMIC_HASH(addr), flags);
old = *addr;
*addr = old | mask;
spin_unlock_irqrestore(ATOMIC_HASH(addr), flags);
__raw_spin_unlock_irqrestore(ATOMIC_HASH(addr), flags);
return old & mask;
}
@ -97,10 +97,10 @@ unsigned long ___clear_bit(unsigned long *addr, unsigned long mask)
{
unsigned long old, flags;
spin_lock_irqsave(ATOMIC_HASH(addr), flags);
__raw_spin_lock_irqsave(ATOMIC_HASH(addr), flags);
old = *addr;
*addr = old & ~mask;
spin_unlock_irqrestore(ATOMIC_HASH(addr), flags);
__raw_spin_unlock_irqrestore(ATOMIC_HASH(addr), flags);
return old & mask;
}
@ -110,10 +110,10 @@ unsigned long ___change_bit(unsigned long *addr, unsigned long mask)
{
unsigned long old, flags;
spin_lock_irqsave(ATOMIC_HASH(addr), flags);
__raw_spin_lock_irqsave(ATOMIC_HASH(addr), flags);
old = *addr;
*addr = old ^ mask;
spin_unlock_irqrestore(ATOMIC_HASH(addr), flags);
__raw_spin_unlock_irqrestore(ATOMIC_HASH(addr), flags);
return old & mask;
}
@ -124,10 +124,10 @@ unsigned long __cmpxchg_u32(volatile u32 *ptr, u32 old, u32 new)
unsigned long flags;
u32 prev;
spin_lock_irqsave(ATOMIC_HASH(ptr), flags);
__raw_spin_lock_irqsave(ATOMIC_HASH(ptr), flags);
if ((prev = *ptr) == old)
*ptr = new;
spin_unlock_irqrestore(ATOMIC_HASH(ptr), flags);
__raw_spin_unlock_irqrestore(ATOMIC_HASH(ptr), flags);
return (unsigned long)prev;
}