include/asm-x86/cmpxchg_64.h: checkpatch cleanups - formatting only
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Joe Perches
Ingo Molnar
Родитель
8121019cad
Коммит
e52da357a1
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@ -3,7 +3,8 @@
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#include <asm/alternative.h> /* Provides LOCK_PREFIX */
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#define xchg(ptr,v) ((__typeof__(*(ptr)))__xchg((unsigned long)(v),(ptr),sizeof(*(ptr))))
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#define xchg(ptr, v) ((__typeof__(*(ptr)))__xchg((unsigned long)(v), \
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(ptr), sizeof(*(ptr))))
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#define __xg(x) ((volatile long *)(x))
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@ -19,33 +20,34 @@ static inline void set_64bit(volatile unsigned long *ptr, unsigned long val)
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* Note 2: xchg has side effect, so that attribute volatile is necessary,
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* but generally the primitive is invalid, *ptr is output argument. --ANK
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*/
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static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int size)
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static inline unsigned long __xchg(unsigned long x, volatile void *ptr,
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int size)
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{
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switch (size) {
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case 1:
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__asm__ __volatile__("xchgb %b0,%1"
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:"=q" (x)
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:"m" (*__xg(ptr)), "0" (x)
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:"memory");
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break;
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case 2:
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__asm__ __volatile__("xchgw %w0,%1"
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:"=r" (x)
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:"m" (*__xg(ptr)), "0" (x)
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:"memory");
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break;
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case 4:
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__asm__ __volatile__("xchgl %k0,%1"
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:"=r" (x)
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:"m" (*__xg(ptr)), "0" (x)
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:"memory");
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break;
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case 8:
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__asm__ __volatile__("xchgq %0,%1"
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:"=r" (x)
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:"m" (*__xg(ptr)), "0" (x)
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:"memory");
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break;
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case 1:
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asm volatile("xchgb %b0,%1"
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: "=q" (x)
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: "m" (*__xg(ptr)), "0" (x)
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: "memory");
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break;
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case 2:
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asm volatile("xchgw %w0,%1"
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: "=r" (x)
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: "m" (*__xg(ptr)), "0" (x)
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: "memory");
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break;
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case 4:
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asm volatile("xchgl %k0,%1"
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: "=r" (x)
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: "m" (*__xg(ptr)), "0" (x)
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: "memory");
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break;
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case 8:
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asm volatile("xchgq %0,%1"
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: "=r" (x)
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: "m" (*__xg(ptr)), "0" (x)
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: "memory");
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break;
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}
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return x;
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}
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@ -64,61 +66,62 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
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unsigned long prev;
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switch (size) {
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case 1:
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__asm__ __volatile__(LOCK_PREFIX "cmpxchgb %b1,%2"
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: "=a"(prev)
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: "q"(new), "m"(*__xg(ptr)), "0"(old)
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: "memory");
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asm volatile(LOCK_PREFIX "cmpxchgb %b1,%2"
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: "=a"(prev)
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: "q"(new), "m"(*__xg(ptr)), "0"(old)
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: "memory");
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return prev;
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case 2:
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__asm__ __volatile__(LOCK_PREFIX "cmpxchgw %w1,%2"
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: "=a"(prev)
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: "r"(new), "m"(*__xg(ptr)), "0"(old)
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: "memory");
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asm volatile(LOCK_PREFIX "cmpxchgw %w1,%2"
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: "=a"(prev)
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: "r"(new), "m"(*__xg(ptr)), "0"(old)
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: "memory");
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return prev;
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case 4:
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__asm__ __volatile__(LOCK_PREFIX "cmpxchgl %k1,%2"
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: "=a"(prev)
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: "r"(new), "m"(*__xg(ptr)), "0"(old)
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: "memory");
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asm volatile(LOCK_PREFIX "cmpxchgl %k1,%2"
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: "=a"(prev)
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: "r"(new), "m"(*__xg(ptr)), "0"(old)
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: "memory");
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return prev;
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case 8:
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__asm__ __volatile__(LOCK_PREFIX "cmpxchgq %1,%2"
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: "=a"(prev)
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: "r"(new), "m"(*__xg(ptr)), "0"(old)
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: "memory");
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asm volatile(LOCK_PREFIX "cmpxchgq %1,%2"
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: "=a"(prev)
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: "r"(new), "m"(*__xg(ptr)), "0"(old)
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: "memory");
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return prev;
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}
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return old;
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}
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static inline unsigned long __cmpxchg_local(volatile void *ptr,
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unsigned long old, unsigned long new, int size)
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unsigned long old,
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unsigned long new, int size)
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{
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unsigned long prev;
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switch (size) {
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case 1:
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__asm__ __volatile__("cmpxchgb %b1,%2"
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: "=a"(prev)
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: "q"(new), "m"(*__xg(ptr)), "0"(old)
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: "memory");
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asm volatile("cmpxchgb %b1,%2"
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: "=a"(prev)
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: "q"(new), "m"(*__xg(ptr)), "0"(old)
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: "memory");
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return prev;
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case 2:
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__asm__ __volatile__("cmpxchgw %w1,%2"
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: "=a"(prev)
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: "r"(new), "m"(*__xg(ptr)), "0"(old)
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: "memory");
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asm volatile("cmpxchgw %w1,%2"
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: "=a"(prev)
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: "r"(new), "m"(*__xg(ptr)), "0"(old)
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: "memory");
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return prev;
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case 4:
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__asm__ __volatile__("cmpxchgl %k1,%2"
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: "=a"(prev)
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: "r"(new), "m"(*__xg(ptr)), "0"(old)
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: "memory");
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asm volatile("cmpxchgl %k1,%2"
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: "=a"(prev)
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: "r"(new), "m"(*__xg(ptr)), "0"(old)
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: "memory");
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return prev;
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case 8:
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__asm__ __volatile__("cmpxchgq %1,%2"
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: "=a"(prev)
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: "r"(new), "m"(*__xg(ptr)), "0"(old)
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: "memory");
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asm volatile("cmpxchgq %1,%2"
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: "=a"(prev)
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: "r"(new), "m"(*__xg(ptr)), "0"(old)
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: "memory");
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return prev;
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}
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return old;
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@ -126,19 +129,20 @@ static inline unsigned long __cmpxchg_local(volatile void *ptr,
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#define cmpxchg(ptr, o, n) \
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((__typeof__(*(ptr)))__cmpxchg((ptr), (unsigned long)(o), \
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(unsigned long)(n), sizeof(*(ptr))))
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(unsigned long)(n), sizeof(*(ptr))))
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#define cmpxchg64(ptr, o, n) \
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({ \
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({ \
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BUILD_BUG_ON(sizeof(*(ptr)) != 8); \
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cmpxchg((ptr), (o), (n)); \
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})
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})
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#define cmpxchg_local(ptr, o, n) \
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((__typeof__(*(ptr)))__cmpxchg_local((ptr), (unsigned long)(o), \
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(unsigned long)(n), sizeof(*(ptr))))
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(unsigned long)(n), \
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sizeof(*(ptr))))
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#define cmpxchg64_local(ptr, o, n) \
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({ \
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({ \
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BUILD_BUG_ON(sizeof(*(ptr)) != 8); \
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cmpxchg_local((ptr), (o), (n)); \
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})
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})
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#endif
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