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hv: remove atomic_add/subtract API

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add atomic_inc(64)/dec(64) API.

Signed-off-by: Li, Fei1 <fei1.li@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Li, Fei1 2018-05-16 16:55:29 +08:00 committed by lijinxia
parent fadaf14a94
commit 336a8883db
2 changed files with 18 additions and 41 deletions
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2
hypervisor/arch/x86/guest/vcpu.c
View File

@ -225,7 +225,7 @@ int destroy_vcpu(struct vcpu *vcpu)
(unsigned long *)&vcpu->vm->hw.vcpu_array[vcpu->vcpu_id], (unsigned long *)&vcpu->vm->hw.vcpu_array[vcpu->vcpu_id],
(unsigned long)NULL); (unsigned long)NULL);
atomic_subtract_int(&vcpu->vm->hw.created_vcpus, 1); atomic_dec(&vcpu->vm->hw.created_vcpus);
vlapic_free(vcpu); vlapic_free(vcpu);
free(vcpu->arch_vcpu.vmcs); free(vcpu->arch_vcpu.vmcs);

57
hypervisor/include/lib/atomic.h
View File

@ -54,27 +54,26 @@ static inline void atomic_clear_int(unsigned int *p, unsigned int v)
: "cc", "memory"); : "cc", "memory");
} }
/* #define build_atomic_inc(name, size, type, ptr) \
* #define atomic_add_int(P, V) (*(unsigned int *)(P) += (V)) static inline void name(type *ptr) \
*/ { \
static inline void atomic_add_int(unsigned int *p, unsigned int v) asm volatile(BUS_LOCK "inc" size " %0" \
{ : "=m" (*ptr) \
__asm __volatile(BUS_LOCK "addl %1,%0" : "m" (*ptr)); \
: "+m" (*p)
: "r" (v)
: "cc", "memory");
} }
build_atomic_inc(atomic_inc, "l", int, p)
build_atomic_inc(atomic_inc64, "q", long, p)
/* #define build_atomic_dec(name, size, type, ptr) \
* #define atomic_subtract_int(P, V) (*(unsigned int *)(P) -= (V)) static inline void name(type *ptr) \
*/ { \
static inline void atomic_subtract_int(unsigned int *p, unsigned int v) asm volatile(BUS_LOCK "dec" size " %0" \
{ : "=m" (*ptr) \
__asm __volatile(BUS_LOCK "subl %1,%0" : "m" (*ptr)); \
: "+m" (*p)
: "r" (v)
: "cc", "memory");
} }
build_atomic_dec(atomic_dec, "l", int, p)
build_atomic_dec(atomic_dec64, "q", long, p)
/* /*
* #define atomic_swap_int(P, V) \ * #define atomic_swap_int(P, V) \
@ -117,28 +116,6 @@ static inline void atomic_clear_long(unsigned long *p, unsigned long v)
: "cc", "memory"); : "cc", "memory");
} }
/*
* #define atomic_add_long(P, V) (*(unsigned long *)(P) += (V))
*/
static inline void atomic_add_long(unsigned long *p, unsigned long v)
{
__asm __volatile(BUS_LOCK "addq %1,%0"
: "+m" (*p)
: "r" (v)
: "cc", "memory");
}
/*
* #define atomic_subtract_long(P, V) (*(unsigned long *)(P) -= (V))
*/
static inline void atomic_subtract_long(unsigned long *p, unsigned long v)
{
__asm __volatile(BUS_LOCK "subq %1,%0"
: "+m" (*p)
: "r" (v)
: "cc", "memory");
}
/* /*
* #define atomic_swap_long(P, V) \ * #define atomic_swap_long(P, V) \
* (return (*(unsigned long *)(P)); *(unsigned long *)(P) = (V);) * (return (*(unsigned long *)(P)); *(unsigned long *)(P) = (V);)