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fix: depending arch futex_atomic_op_inuser() (a part of ARCH_DEP_8)

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This commit is contained in:
Ken Sato
2017-11-20 16:42:47 +09:00
parent ac25c5e1e7
commit 2af6d5115a
2 changed files with 0 additions and 71 deletions
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2
arch/x86_64/kernel/include/arch-futex.h
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@ -64,7 +64,6 @@ static inline int futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval,
return oldval; return oldval;
} }
#ifdef POSTK_DEBUG_ARCH_DEP_8 /* arch depend hide */
static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr) static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
{ {
int op = (encoded_op >> 28) & 7; int op = (encoded_op >> 28) & 7;
@ -128,7 +127,6 @@ static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
} }
return ret; return ret;
} }
#endif /* !POSTK_DEBUG_ARCH_DEP_8 */
static inline int get_futex_value_locked(uint32_t *dest, uint32_t *from) static inline int get_futex_value_locked(uint32_t *dest, uint32_t *from)
{ {

69
kernel/include/futex.h
View File

@ -117,78 +117,9 @@
#include <arch/system.h> #include <arch/system.h>
#endif #endif
#ifdef POSTK_DEBUG_ARCH_DEP_8 /* arch depend hide */
#else
static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
{
int op = (encoded_op >> 28) & 7;
int cmp = (encoded_op >> 24) & 15;
int oparg = (encoded_op << 8) >> 20;
int cmparg = (encoded_op << 20) >> 20;
int oldval = 0, ret, tem;
if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
oparg = 1 << oparg;
#ifdef __UACCESS__
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
return -EFAULT;
#endif
switch (op) {
case FUTEX_OP_SET:
__futex_atomic_op1("xchgl %0, %2", ret, oldval, uaddr, oparg);
break;
case FUTEX_OP_ADD:
__futex_atomic_op1("lock; xaddl %0, %2", ret, oldval,
uaddr, oparg);
break;
case FUTEX_OP_OR:
__futex_atomic_op2("orl %4, %3", ret, oldval, uaddr, oparg);
break;
case FUTEX_OP_ANDN:
__futex_atomic_op2("andl %4, %3", ret, oldval, uaddr, ~oparg);
break;
case FUTEX_OP_XOR:
__futex_atomic_op2("xorl %4, %3", ret, oldval, uaddr, oparg);
break;
default:
ret = -ENOSYS;
}
if (!ret) {
switch (cmp) {
case FUTEX_OP_CMP_EQ:
ret = (oldval == cmparg);
break;
case FUTEX_OP_CMP_NE:
ret = (oldval != cmparg);
break;
case FUTEX_OP_CMP_LT:
ret = (oldval < cmparg);
break;
case FUTEX_OP_CMP_GE:
ret = (oldval >= cmparg);
break;
case FUTEX_OP_CMP_LE:
ret = (oldval <= cmparg);
break;
case FUTEX_OP_CMP_GT:
ret = (oldval > cmparg);
break;
default:
ret = -ENOSYS;
}
}
return ret;
}
#endif /* arch depend hide */
#endif // __KERNEL__ #endif // __KERNEL__
#endif // _ASM_X86_FUTEX_H #endif // _ASM_X86_FUTEX_H
#define FUTEX_HASHBITS 8 /* 256 entries in each futex hash tbl */ #define FUTEX_HASHBITS 8 /* 256 entries in each futex hash tbl */
#define FUT_OFF_INODE 1 /* We set bit 0 if key has a reference on inode */ #define FUT_OFF_INODE 1 /* We set bit 0 if key has a reference on inode */