diff options
Diffstat (limited to 'arch/ia64/include/asm/cmpxchg.h')
| -rw-r--r-- | arch/ia64/include/asm/cmpxchg.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/cmpxchg.h b/arch/ia64/include/asm/cmpxchg.h index 8b2e644ef6a1..d85ee1a0a227 100644 --- a/arch/ia64/include/asm/cmpxchg.h +++ b/arch/ia64/include/asm/cmpxchg.h @@ -13,4 +13,21 @@ #define arch_cmpxchg_local arch_cmpxchg #define arch_cmpxchg64_local arch_cmpxchg64 +#ifdef CONFIG_IA64_DEBUG_CMPXCHG +# define CMPXCHG_BUGCHECK_DECL int _cmpxchg_bugcheck_count = 128; +# define CMPXCHG_BUGCHECK(v) \ +do { \ + if (_cmpxchg_bugcheck_count-- <= 0) { \ + void *ip; \ + extern int _printk(const char *fmt, ...); \ + ip = (void *) ia64_getreg(_IA64_REG_IP); \ + _printk("CMPXCHG_BUGCHECK: stuck at %p on word %p\n", ip, (v));\ + break; \ + } \ +} while (0) +#else /* !CONFIG_IA64_DEBUG_CMPXCHG */ +# define CMPXCHG_BUGCHECK_DECL +# define CMPXCHG_BUGCHECK(v) +#endif /* !CONFIG_IA64_DEBUG_CMPXCHG */ + #endif /* _ASM_IA64_CMPXCHG_H */ |