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Blackfin/ipipe: prepare status bitops for SMP support

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Signed-off-by: Philippe Gerum <rpm@xenomai.org>
Signed-off-by: Li Yi <yi.li@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Philippe Gerum
2009-10-27 22:05:31 +01:00
committed by Mike Frysinger
parent ab843c7940
commit d2685fb7b4
3 changed files with 74 additions and 25 deletions
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22
arch/blackfin/include/asm/ipipe_base.h
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@@ -51,23 +51,15 @@
extern unsigned long __ipipe_root_status; /* Alias to ipipe_root_cpudom_var(status) */
#define __ipipe_stall_root() \
do { \
volatile unsigned long *p = &__ipipe_root_status; \
set_bit(0, p); \
} while (0)
void __ipipe_stall_root(void);
#define __ipipe_test_and_stall_root() \
({ \
volatile unsigned long *p = &__ipipe_root_status; \
test_and_set_bit(0, p); \
})
unsigned long __ipipe_test_and_stall_root(void);
#define __ipipe_test_root() \
({ \
const unsigned long *p = &__ipipe_root_status; \
test_bit(0, p); \
})
unsigned long __ipipe_test_root(void);
void __ipipe_lock_root(void);
void __ipipe_unlock_root(void);
#endif /* !__ASSEMBLY__ */