projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| d5de8841 JF |
1 | /* |
| 2 | * Split spinlock implementation out into its own file, so it can be | |
| 3 | * compiled in a FTRACE-compatible way. | |
| 4 | */ | |
| 5 | #include <linux/spinlock.h> | |
| 6 | #include <linux/module.h> | |
| 7 | ||
| 8 | #include <asm/paravirt.h> | |
| 9 | ||
| 087052b0 IM |
10 | static inline void |
| 11 | default_spin_lock_flags(raw_spinlock_t *lock, unsigned long flags) | |
| 63d3a75d JF |
12 | { |
| 13 | __raw_spin_lock(lock); | |
| 14 | } | |
| 15 | ||
| d5de8841 JF |
16 | struct pv_lock_ops pv_lock_ops = { |
| 17 | #ifdef CONFIG_SMP | |
| 18 | .spin_is_locked = __ticket_spin_is_locked, | |
| 19 | .spin_is_contended = __ticket_spin_is_contended, | |
| 20 | ||
| 21 | .spin_lock = __ticket_spin_lock, | |
| 63d3a75d | 22 | .spin_lock_flags = default_spin_lock_flags, |
| d5de8841 JF |
23 | .spin_trylock = __ticket_spin_trylock, |
| 24 | .spin_unlock = __ticket_spin_unlock, | |
| 25 | #endif | |
| 26 | }; | |
| 25258ef7 | 27 | EXPORT_SYMBOL(pv_lock_ops); |
| d5de8841 JF |
28 | |
| 29 | void __init paravirt_use_bytelocks(void) | |
| 30 | { | |
| 31 | #ifdef CONFIG_SMP | |
| 32 | pv_lock_ops.spin_is_locked = __byte_spin_is_locked; | |
| 33 | pv_lock_ops.spin_is_contended = __byte_spin_is_contended; | |
| 34 | pv_lock_ops.spin_lock = __byte_spin_lock; | |
| 35 | pv_lock_ops.spin_trylock = __byte_spin_trylock; | |
| 36 | pv_lock_ops.spin_unlock = __byte_spin_unlock; | |
| 37 | #endif | |
| 38 | } |