| 1234567891011121314151617181920212223242526272829303132333435363738 |
- /* SPDX-License-Identifier: GPL-2.0 */
- #ifndef __ASM_SH_ATOMIC_H
- #define __ASM_SH_ATOMIC_H
- #if defined(CONFIG_CPU_J2)
- #include <asm-generic/atomic.h>
- #else
- /*
- * Atomic operations that C can't guarantee us. Useful for
- * resource counting etc..
- *
- */
- #include <linux/compiler.h>
- #include <linux/types.h>
- #include <asm/cmpxchg.h>
- #include <asm/barrier.h>
- #define arch_atomic_read(v) READ_ONCE((v)->counter)
- #define arch_atomic_set(v,i) WRITE_ONCE((v)->counter, (i))
- #if defined(CONFIG_GUSA_RB)
- #include <asm/atomic-grb.h>
- #elif defined(CONFIG_CPU_SH4A)
- #include <asm/atomic-llsc.h>
- #else
- #include <asm/atomic-irq.h>
- #endif
- #define arch_atomic_xchg(v, new) (arch_xchg(&((v)->counter), new))
- #define arch_atomic_cmpxchg(v, o, n) (arch_cmpxchg(&((v)->counter), (o), (n)))
- #endif /* CONFIG_CPU_J2 */
- #endif /* __ASM_SH_ATOMIC_H */
|
