Contributors: 13
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Heiko Carstens |
169 |
31.47% |
9 |
36.00% |
| Martin Schwidefsky |
137 |
25.51% |
4 |
16.00% |
| Peter Zijlstra |
99 |
18.44% |
2 |
8.00% |
| Linus Torvalds (pre-git) |
55 |
10.24% |
1 |
4.00% |
| Mark Rutland |
35 |
6.52% |
1 |
4.00% |
| Vasily Gorbik |
12 |
2.23% |
1 |
4.00% |
| Ingo Molnar |
9 |
1.68% |
1 |
4.00% |
| Mathieu Desnoyers |
9 |
1.68% |
1 |
4.00% |
| Linus Torvalds |
4 |
0.74% |
1 |
4.00% |
| Matthew Wilcox |
3 |
0.56% |
1 |
4.00% |
| Dave Jones |
3 |
0.56% |
1 |
4.00% |
| Greg Kroah-Hartman |
1 |
0.19% |
1 |
4.00% |
| David Howells |
1 |
0.19% |
1 |
4.00% |
| Total |
537 |
|
25 |
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright IBM Corp. 1999, 2016
* Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>,
* Denis Joseph Barrow,
* Arnd Bergmann,
*/
#ifndef __ARCH_S390_ATOMIC__
#define __ARCH_S390_ATOMIC__
#include <linux/compiler.h>
#include <linux/types.h>
#include <asm/atomic_ops.h>
#include <asm/barrier.h>
#include <asm/cmpxchg.h>
static inline int atomic_read(const atomic_t *v)
{
int c;
asm volatile(
" l %0,%1\n"
: "=d" (c) : "Q" (v->counter));
return c;
}
static inline void atomic_set(atomic_t *v, int i)
{
asm volatile(
" st %1,%0\n"
: "=Q" (v->counter) : "d" (i));
}
static inline int atomic_add_return(int i, atomic_t *v)
{
return __atomic_add_barrier(i, &v->counter) + i;
}
static inline int atomic_fetch_add(int i, atomic_t *v)
{
return __atomic_add_barrier(i, &v->counter);
}
static inline void atomic_add(int i, atomic_t *v)
{
#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
/*
* Order of conditions is important to circumvent gcc 10 bug:
* https://gcc.gnu.org/pipermail/gcc-patches/2020-July/549318.html
*/
if ((i > -129) && (i < 128) && __builtin_constant_p(i)) {
__atomic_add_const(i, &v->counter);
return;
}
#endif
__atomic_add(i, &v->counter);
}
#define atomic_sub(_i, _v) atomic_add(-(int)(_i), _v)
#define atomic_sub_return(_i, _v) atomic_add_return(-(int)(_i), _v)
#define atomic_fetch_sub(_i, _v) atomic_fetch_add(-(int)(_i), _v)
#define ATOMIC_OPS(op) \
static inline void atomic_##op(int i, atomic_t *v) \
{ \
__atomic_##op(i, &v->counter); \
} \
static inline int atomic_fetch_##op(int i, atomic_t *v) \
{ \
return __atomic_##op##_barrier(i, &v->counter); \
}
ATOMIC_OPS(and)
ATOMIC_OPS(or)
ATOMIC_OPS(xor)
#undef ATOMIC_OPS
#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
{
return __atomic_cmpxchg(&v->counter, old, new);
}
#define ATOMIC64_INIT(i) { (i) }
static inline s64 atomic64_read(const atomic64_t *v)
{
s64 c;
asm volatile(
" lg %0,%1\n"
: "=d" (c) : "Q" (v->counter));
return c;
}
static inline void atomic64_set(atomic64_t *v, s64 i)
{
asm volatile(
" stg %1,%0\n"
: "=Q" (v->counter) : "d" (i));
}
static inline s64 atomic64_add_return(s64 i, atomic64_t *v)
{
return __atomic64_add_barrier(i, (long *)&v->counter) + i;
}
static inline s64 atomic64_fetch_add(s64 i, atomic64_t *v)
{
return __atomic64_add_barrier(i, (long *)&v->counter);
}
static inline void atomic64_add(s64 i, atomic64_t *v)
{
#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
/*
* Order of conditions is important to circumvent gcc 10 bug:
* https://gcc.gnu.org/pipermail/gcc-patches/2020-July/549318.html
*/
if ((i > -129) && (i < 128) && __builtin_constant_p(i)) {
__atomic64_add_const(i, (long *)&v->counter);
return;
}
#endif
__atomic64_add(i, (long *)&v->counter);
}
#define atomic64_xchg(v, new) (xchg(&((v)->counter), new))
static inline s64 atomic64_cmpxchg(atomic64_t *v, s64 old, s64 new)
{
return __atomic64_cmpxchg((long *)&v->counter, old, new);
}
#define ATOMIC64_OPS(op) \
static inline void atomic64_##op(s64 i, atomic64_t *v) \
{ \
__atomic64_##op(i, (long *)&v->counter); \
} \
static inline long atomic64_fetch_##op(s64 i, atomic64_t *v) \
{ \
return __atomic64_##op##_barrier(i, (long *)&v->counter); \
}
ATOMIC64_OPS(and)
ATOMIC64_OPS(or)
ATOMIC64_OPS(xor)
#undef ATOMIC64_OPS
#define atomic64_sub_return(_i, _v) atomic64_add_return(-(s64)(_i), _v)
#define atomic64_fetch_sub(_i, _v) atomic64_fetch_add(-(s64)(_i), _v)
#define atomic64_sub(_i, _v) atomic64_add(-(s64)(_i), _v)
#endif /* __ARCH_S390_ATOMIC__ */