You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
36 lines
618 B
36 lines
618 B
#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: 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 */
|
|
|