From 63d3a75d6f1fcf2f33e6abbe84e1f428c3586152 Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Tue, 19 Aug 2008 13:19:36 -0700 Subject: x86/paravirt: add spin_lock_flags lock op It is useful for a pv_lock_ops backend to know whether interrupts are enabled or not in the context a spin_lock is being called. This allows it to enable interrupts while spinning, which could be particularly helpful when spinning becomes blocking. The default implementation just calls the normal spin_lock op, ignoring the flags. Signed-off-by: Jeremy Fitzhardinge Signed-off-by: Ingo Molnar --- include/asm-x86/spinlock.h | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'include/asm-x86/spinlock.h') diff --git a/include/asm-x86/spinlock.h b/include/asm-x86/spinlock.h index e39c790dbfd2..b755ea86367e 100644 --- a/include/asm-x86/spinlock.h +++ b/include/asm-x86/spinlock.h @@ -182,8 +182,6 @@ static __always_inline void __ticket_spin_unlock(raw_spinlock_t *lock) } #endif -#define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock) - #ifdef CONFIG_PARAVIRT /* * Define virtualization-friendly old-style lock byte lock, for use in @@ -272,6 +270,13 @@ static __always_inline void __raw_spin_unlock(raw_spinlock_t *lock) { __ticket_spin_unlock(lock); } + +static __always_inline void __raw_spin_lock_flags(raw_spinlock_t *lock, + unsigned long flags) +{ + __raw_spin_lock(lock); +} + #endif /* CONFIG_PARAVIRT */ static inline void __raw_spin_unlock_wait(raw_spinlock_t *lock) -- cgit v1.2.3