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#ifndef _SPARC64_BACKOFF_H
#define _SPARC64_BACKOFF_H
#define BACKOFF_LIMIT (4 * 1024)
#ifdef CONFIG_SMP
#define BACKOFF_SETUP(reg) \
mov 1, reg
#define BACKOFF_LABEL(spin_label, continue_label) \
spin_label
#define BACKOFF_SPIN(reg, tmp, label) \
mov reg, tmp; \
88: rd %ccr, %g0; \
rd %ccr, %g0; \
rd %ccr, %g0; \
.section .pause_patch,"ax"; \
.word 88b; \
sllx tmp, 7, tmp; \
wr tmp, 0, %asr27; \
clr tmp; \
.previous; \
brnz,pt tmp, 88b; \
sub tmp, 1, tmp; \
set BACKOFF_LIMIT, tmp; \
cmp reg, tmp; \
bg,pn %xcc, label; \
nop; \
ba,pt %xcc, label; \
sllx reg, 1, reg;
#else
#define BACKOFF_SETUP(reg)
#define BACKOFF_LABEL(spin_label, continue_label) \
continue_label
#define BACKOFF_SPIN(reg, tmp, label)
#endif
#endif /* _SPARC64_BACKOFF_H */
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