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locking/atomic: Use s64 for atomic64 

As a step towards making the atomic64 API use consistent types treewide,
let's have the generic atomic64 implementation use s64 as the underlying
type for atomic64_t, rather than long long, matching the generated
headers.

Otherwise, there should be no functional change as a result of this
patch.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Cc: aou@eecs.berkeley.edu
Cc: bp@alien8.de
Cc: catalin.marinas@arm.com
Cc: davem@davemloft.net
Cc: fenghua.yu@intel.com
Cc: heiko.carstens@de.ibm.com
Cc: herbert@gondor.apana.org.au
Cc: ink@jurassic.park.msu.ru
Cc: jhogan@kernel.org
Cc: linux@armlinux.org.uk
Cc: mattst88@gmail.com
Cc: mpe@ellerman.id.au
Cc: palmer@sifive.com
Cc: paul.burton@mips.com
Cc: paulus@samba.org
Cc: ralf@linux-mips.org
Cc: rth@twiddle.net
Cc: tony.luck@intel.com
Cc: vgupta@synopsys.com
Link: https://lkml.kernel.org/r/20190522132250.26499-4-mark.rutland@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Mark Rutland 2019-05-22 14:22:35 +01:00 committed by Ingo Molnar
parent 982164d62a
commit 9255813d58
2 changed files with 26 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
include/asm-generic/atomic64.h
View File

@ -10,24 +10,24 @@
#include <linux/types.h>
typedef struct {
long long counter;
s64 counter;
} atomic64_t;
#define ATOMIC64_INIT(i) { (i) }
extern long long atomic64_read(const atomic64_t *v);
extern void atomic64_set(atomic64_t *v, long long i);
extern s64 atomic64_read(const atomic64_t *v);
extern void atomic64_set(atomic64_t *v, s64 i);
#define atomic64_set_release(v, i) atomic64_set((v), (i))
#define ATOMIC64_OP(op) \
extern void atomic64_##op(long long a, atomic64_t *v);
extern void atomic64_##op(s64 a, atomic64_t *v);
#define ATOMIC64_OP_RETURN(op) \
extern long long atomic64_##op##_return(long long a, atomic64_t *v);
extern s64 atomic64_##op##_return(s64 a, atomic64_t *v);
#define ATOMIC64_FETCH_OP(op) \
extern long long atomic64_fetch_##op(long long a, atomic64_t *v);
extern s64 atomic64_fetch_##op(s64 a, atomic64_t *v);
#define ATOMIC64_OPS(op) ATOMIC64_OP(op) ATOMIC64_OP_RETURN(op) ATOMIC64_FETCH_OP(op)
@ -46,11 +46,11 @@ ATOMIC64_OPS(xor)
#undef ATOMIC64_OP_RETURN
#undef ATOMIC64_OP
extern long long atomic64_dec_if_positive(atomic64_t *v);
extern s64 atomic64_dec_if_positive(atomic64_t *v);
#define atomic64_dec_if_positive atomic64_dec_if_positive
extern long long atomic64_cmpxchg(atomic64_t *v, long long o, long long n);
extern long long atomic64_xchg(atomic64_t *v, long long new);
extern long long atomic64_fetch_add_unless(atomic64_t *v, long long a, long long u);
extern s64 atomic64_cmpxchg(atomic64_t *v, s64 o, s64 n);
extern s64 atomic64_xchg(atomic64_t *v, s64 new);
extern s64 atomic64_fetch_add_unless(atomic64_t *v, s64 a, s64 u);
#define atomic64_fetch_add_unless atomic64_fetch_add_unless
#endif /* _ASM_GENERIC_ATOMIC64_H */

32
lib/atomic64.c
View File

@ -42,11 +42,11 @@ static inline raw_spinlock_t *lock_addr(const atomic64_t *v)
return &atomic64_lock[addr & (NR_LOCKS - 1)].lock;
}
long long atomic64_read(const atomic64_t *v)
s64 atomic64_read(const atomic64_t *v)
{
unsigned long flags;
raw_spinlock_t *lock = lock_addr(v);
long long val;
s64 val;
raw_spin_lock_irqsave(lock, flags);
val = v->counter;
@ -55,7 +55,7 @@ long long atomic64_read(const atomic64_t *v)
}
EXPORT_SYMBOL(atomic64_read);
void atomic64_set(atomic64_t *v, long long i)
void atomic64_set(atomic64_t *v, s64 i)
{
unsigned long flags;
raw_spinlock_t *lock = lock_addr(v);
@ -67,7 +67,7 @@ void atomic64_set(atomic64_t *v, long long i)
EXPORT_SYMBOL(atomic64_set);
#define ATOMIC64_OP(op, c_op) \
void atomic64_##op(long long a, atomic64_t *v) \
void atomic64_##op(s64 a, atomic64_t *v) \
{ \
unsigned long flags; \
raw_spinlock_t *lock = lock_addr(v); \
@ -79,11 +79,11 @@ void atomic64_##op(long long a, atomic64_t *v) \
EXPORT_SYMBOL(atomic64_##op);
#define ATOMIC64_OP_RETURN(op, c_op) \
long long atomic64_##op##_return(long long a, atomic64_t *v) \
s64 atomic64_##op##_return(s64 a, atomic64_t *v) \
{ \
unsigned long flags; \
raw_spinlock_t *lock = lock_addr(v); \
long long val; \
s64 val; \
\
raw_spin_lock_irqsave(lock, flags); \
val = (v->counter c_op a); \
@ -93,11 +93,11 @@ long long atomic64_##op##_return(long long a, atomic64_t *v) \
EXPORT_SYMBOL(atomic64_##op##_return);
#define ATOMIC64_FETCH_OP(op, c_op) \
long long atomic64_fetch_##op(long long a, atomic64_t *v) \
s64 atomic64_fetch_##op(s64 a, atomic64_t *v) \
{ \
unsigned long flags; \
raw_spinlock_t *lock = lock_addr(v); \
long long val; \
s64 val; \
\
raw_spin_lock_irqsave(lock, flags); \
val = v->counter; \
@ -130,11 +130,11 @@ ATOMIC64_OPS(xor, ^=)
#undef ATOMIC64_OP_RETURN
#undef ATOMIC64_OP
long long atomic64_dec_if_positive(atomic64_t *v)
s64 atomic64_dec_if_positive(atomic64_t *v)
{
unsigned long flags;
raw_spinlock_t *lock = lock_addr(v);
long long val;
s64 val;
raw_spin_lock_irqsave(lock, flags);
val = v->counter - 1;
@ -145,11 +145,11 @@ long long atomic64_dec_if_positive(atomic64_t *v)
}
EXPORT_SYMBOL(atomic64_dec_if_positive);
long long atomic64_cmpxchg(atomic64_t *v, long long o, long long n)
s64 atomic64_cmpxchg(atomic64_t *v, s64 o, s64 n)
{
unsigned long flags;
raw_spinlock_t *lock = lock_addr(v);
long long val;
s64 val;
raw_spin_lock_irqsave(lock, flags);
val = v->counter;
@ -160,11 +160,11 @@ long long atomic64_cmpxchg(atomic64_t *v, long long o, long long n)
}
EXPORT_SYMBOL(atomic64_cmpxchg);
long long atomic64_xchg(atomic64_t *v, long long new)
s64 atomic64_xchg(atomic64_t *v, s64 new)
{
unsigned long flags;
raw_spinlock_t *lock = lock_addr(v);
long long val;
s64 val;
raw_spin_lock_irqsave(lock, flags);
val = v->counter;
@ -174,11 +174,11 @@ long long atomic64_xchg(atomic64_t *v, long long new)
}
EXPORT_SYMBOL(atomic64_xchg);
long long atomic64_fetch_add_unless(atomic64_t *v, long long a, long long u)
s64 atomic64_fetch_add_unless(atomic64_t *v, s64 a, s64 u)
{
unsigned long flags;
raw_spinlock_t *lock = lock_addr(v);
long long val;
s64 val;
raw_spin_lock_irqsave(lock, flags);
val = v->counter;