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Message-Id: <20190522132250.26499-4-mark.rutland@arm.com>
Date: Wed, 22 May 2019 14:22:35 +0100
From: Mark Rutland <mark.rutland@....com>
To: linux-kernel@...r.kernel.org, peterz@...radead.org,
will.deacon@....com
Cc: aou@...s.berkeley.edu, arnd@...db.de, bp@...en8.de,
catalin.marinas@....com, davem@...emloft.net, fenghua.yu@...el.com,
heiko.carstens@...ibm.com, herbert@...dor.apana.org.au,
ink@...assic.park.msu.ru, jhogan@...nel.org, linux@...linux.org.uk,
mark.rutland@....com, mattst88@...il.com, mingo@...nel.org,
mpe@...erman.id.au, palmer@...ive.com, paul.burton@...s.com,
paulus@...ba.org, ralf@...ux-mips.org, rth@...ddle.net,
stable@...r.kernel.org, tglx@...utronix.de, tony.luck@...el.com,
vgupta@...opsys.com
Subject: [PATCH 03/18] locking/atomic: generic: 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@....com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Will Deacon <will.deacon@....com>
---
include/asm-generic/atomic64.h | 20 ++++++++++----------
lib/atomic64.c | 32 ++++++++++++++++----------------
2 files changed, 26 insertions(+), 26 deletions(-)
diff --git a/include/asm-generic/atomic64.h b/include/asm-generic/atomic64.h
index 97b28b7f1f29..fc7b831ed632 100644
--- a/include/asm-generic/atomic64.h
+++ b/include/asm-generic/atomic64.h
@@ -14,24 +14,24 @@
#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)
@@ -50,11 +50,11 @@ 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 */
diff --git a/lib/atomic64.c b/lib/atomic64.c
index 1d91e31eceec..62f218bf50a0 100644
--- a/lib/atomic64.c
+++ b/lib/atomic64.c
@@ -46,11 +46,11 @@ 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;
@@ -59,7 +59,7 @@ 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);
@@ -71,7 +71,7 @@ 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); \
@@ -83,11 +83,11 @@ 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); \
@@ -97,11 +97,11 @@ 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; \
@@ -134,11 +134,11 @@ 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;
@@ -149,11 +149,11 @@ 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;
@@ -164,11 +164,11 @@ 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;
@@ -178,11 +178,11 @@ 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;
--
2.11.0
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