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hv: refine bitops

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Rename bitmap_clr to bitmap_clear
Rename bitmap_isset to bitmap_test
Remove bitmap_setof

Signed-off-by: Li, Fei1 <fei1.li@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Li, Fei1
2018-05-21 14:17:47 +08:00
committed by lijinxia
parent 95c289b15f
commit 57d0bf3b7c
7 changed files with 38 additions and 54 deletions
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61
hypervisor/include/lib/bits.h
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@@ -129,51 +129,51 @@ ffsl(long mask)
static inline void
bitmap_set(int mask, unsigned long *bits)
{
/* (*bits) |= (1UL<<mask); */
__asm __volatile(BUS_LOCK "orq %1,%0"
/* (*bits) |= (1UL<<mask); */
asm volatile(BUS_LOCK "orq %1,%0"
: "+m" (*bits)
: "r" (1UL<<mask)
: "cc", "memory");
}
static inline void
bitmap_clr(int mask, unsigned long *bits)
bitmap_clear(int mask, unsigned long *bits)
{
/* (*bits) &= ~(1UL<<mask); */
__asm __volatile(BUS_LOCK "andq %1,%0"
asm volatile(BUS_LOCK "andq %1,%0"
: "+m" (*bits)
: "r" (~(1UL<<mask))
: "cc", "memory");
}
static inline int
bitmap_isset(int mask, unsigned long *bits)
static inline bool
bitmap_test(int mask, unsigned long *bits)
{
/*
* return (*bits) & (1UL<<mask);
* return !!((*bits) & (1UL<<mask));
*/
int ret;
__asm __volatile("btq %2,%1\n\tsbbl %0, %0"
: "=r" (ret), "=m" (*bits)
: "r" ((long)(mask) & 0x3f)
: "cc", "memory");
return (!!ret);
}
static inline int
bitmap_test_and_set(int mask, unsigned long *bits)
{
int ret;
__asm __volatile(BUS_LOCK "btsq %2,%1\n\tsbbl %0,%0"
asm volatile("btq %2,%1\n\tsbbl %0, %0"
: "=r" (ret), "=m" (*bits)
: "r" ((long)(mask & 0x3f))
: "cc", "memory");
return (!!ret);
}
static inline int
static inline bool
bitmap_test_and_set(int mask, unsigned long *bits)
{
int ret;
asm volatile(BUS_LOCK "btsq %2,%1\n\tsbbl %0,%0"
: "=r" (ret), "=m" (*bits)
: "r" ((long)(mask & 0x3f))
: "cc", "memory");
return (!!ret);
}
static inline bool
bitmap_test_and_clear(int mask, unsigned long *bits)
{
/*
@@ -183,28 +183,13 @@ bitmap_test_and_clear(int mask, unsigned long *bits)
*/
int ret;
__asm __volatile(BUS_LOCK "btrq %2,%1\n\tsbbl %0,%0"
asm volatile(BUS_LOCK "btrq %2,%1\n\tsbbl %0,%0"
: "=r" (ret), "=m" (*bits)
: "r" ((long)(mask) & 0x3f)
: "r" ((long)(mask & 0x3f))
: "cc", "memory");
return (!!ret);
}
static inline void
bitmap_setof(int mask, unsigned long *bits)
{
/*
* *bits = 0;
* (*bits) |= (1UL<<mask);
*/
__asm __volatile(BUS_LOCK "xchgq %1,%0"
: "+m" (*bits)
: "r" ((1UL<<mask))
: "cc", "memory");
}
static inline int
bitmap_ffs(unsigned long *bits)
{