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[PATCH] x86_64: Add cpu_relax to apic_wait_icr_idle

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This one is adding a cpu_relax() that already existed in the i386 version.

Signed-off-by: Andreas Mohr <andi@lisas.de>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Andreas Mohr 2006-06-26 13:59:29 +02:00 committed by Linus Torvalds
parent cab093b9d4
commit 899ced0dd9
1 changed files with 2 additions and 1 deletions
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3
include/asm-x86_64/apic.h
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@ -49,7 +49,8 @@ static __inline unsigned int apic_read(unsigned long reg)
static __inline__ void apic_wait_icr_idle(void) static __inline__ void apic_wait_icr_idle(void)
{ {
while ( apic_read( APIC_ICR ) & APIC_ICR_BUSY ); while (apic_read( APIC_ICR ) & APIC_ICR_BUSY)
cpu_relax();
} }
static inline void ack_APIC_irq(void) static inline void ack_APIC_irq(void)