Contributors: 12
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Tom Rini |
55 |
32.74% |
1 |
5.26% |
| Linus Torvalds (pre-git) |
31 |
18.45% |
4 |
21.05% |
| Paul Mundt |
23 |
13.69% |
5 |
26.32% |
| David Howells |
22 |
13.10% |
1 |
5.26% |
| Stuart Menefy |
12 |
7.14% |
1 |
5.26% |
| Rich Felker |
11 |
6.55% |
1 |
5.26% |
| Masami Hiramatsu |
7 |
4.17% |
1 |
5.26% |
| Mark Rutland |
2 |
1.19% |
1 |
5.26% |
| Andrzej Hajda |
2 |
1.19% |
1 |
5.26% |
| Matthew Wilcox |
1 |
0.60% |
1 |
5.26% |
| Michael S. Tsirkin |
1 |
0.60% |
1 |
5.26% |
| Greg Kroah-Hartman |
1 |
0.60% |
1 |
5.26% |
| Total |
168 |
|
19 |
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_SH_CMPXCHG_H
#define __ASM_SH_CMPXCHG_H
/*
* Atomic operations that C can't guarantee us. Useful for
* resource counting etc..
*/
#include <linux/compiler.h>
#include <linux/types.h>
#if defined(CONFIG_GUSA_RB)
#include <asm/cmpxchg-grb.h>
#elif defined(CONFIG_CPU_SH4A)
#include <asm/cmpxchg-llsc.h>
#elif defined(CONFIG_CPU_J2) && defined(CONFIG_SMP)
#include <asm/cmpxchg-cas.h>
#else
#include <asm/cmpxchg-irq.h>
#endif
extern void __xchg_called_with_bad_pointer(void);
#define __arch_xchg(ptr, x, size) \
({ \
unsigned long __xchg__res; \
volatile void *__xchg_ptr = (ptr); \
switch (size) { \
case 4: \
__xchg__res = xchg_u32(__xchg_ptr, x); \
break; \
case 2: \
__xchg__res = xchg_u16(__xchg_ptr, x); \
break; \
case 1: \
__xchg__res = xchg_u8(__xchg_ptr, x); \
break; \
default: \
__xchg_called_with_bad_pointer(); \
__xchg__res = x; \
break; \
} \
\
__xchg__res; \
})
#define arch_xchg(ptr,x) \
((__typeof__(*(ptr)))__arch_xchg((ptr),(unsigned long)(x), sizeof(*(ptr))))
/* This function doesn't exist, so you'll get a linker error
* if something tries to do an invalid cmpxchg(). */
extern void __cmpxchg_called_with_bad_pointer(void);
static inline unsigned long __cmpxchg(volatile void * ptr, unsigned long old,
unsigned long new, int size)
{
switch (size) {
case 4:
return __cmpxchg_u32(ptr, old, new);
}
__cmpxchg_called_with_bad_pointer();
return old;
}
#define arch_cmpxchg(ptr,o,n) \
({ \
__typeof__(*(ptr)) _o_ = (o); \
__typeof__(*(ptr)) _n_ = (n); \
(__typeof__(*(ptr))) __cmpxchg((ptr), (unsigned long)_o_, \
(unsigned long)_n_, sizeof(*(ptr))); \
})
#include <asm-generic/cmpxchg-local.h>
#define arch_cmpxchg_local(ptr, o, n) ({ \
(__typeof__(*ptr))__generic_cmpxchg_local((ptr), \
(unsigned long)(o), \
(unsigned long)(n), \
sizeof(*(ptr))); \
})
#endif /* __ASM_SH_CMPXCHG_H */