diff options
| author | Peter Zijlstra <[email protected]> | 2015-09-05 16:55:05 +0200 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2015-09-11 07:50:12 +0200 |
| commit | a6b277857fd2c990bc208ca1958d3f34d26052f7 (patch) | |
| tree | 6d0095d2e38945130bb730b70ca1f98b17759238 | |
| parent | 43b3f02899f74ae9914a39547cc5492156f0027a (diff) | |
locking/qspinlock/x86: Only emit the test-and-set fallback when building guest support
Only emit the test-and-set fallback for Hypervisors lacking
PARAVIRT_SPINLOCKS support when building for guests.
Suggested-by: Linus Torvalds <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: [email protected]
Cc: [email protected] # 4.2
Signed-off-by: Ingo Molnar <[email protected]>
| -rw-r--r-- | arch/x86/include/asm/qspinlock.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/include/asm/qspinlock.h b/arch/x86/include/asm/qspinlock.h index 8dde3bdc4a05..eaba08076030 100644 --- a/arch/x86/include/asm/qspinlock.h +++ b/arch/x86/include/asm/qspinlock.h @@ -39,8 +39,8 @@ static inline void queued_spin_unlock(struct qspinlock *lock) } #endif +#ifdef CONFIG_PARAVIRT #define virt_spin_lock virt_spin_lock - static inline bool virt_spin_lock(struct qspinlock *lock) { if (!static_cpu_has(X86_FEATURE_HYPERVISOR)) @@ -59,6 +59,7 @@ static inline bool virt_spin_lock(struct qspinlock *lock) return true; } +#endif /* CONFIG_PARAVIRT */ #include <asm-generic/qspinlock.h> |