Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
[SPARC64]: Implement futex_atomic_cmpxchg_inatomic().
+20
-2
include/asm-sparc64/futex.h
+20
-2
include/asm-sparc64/futex.h
···
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}
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static inline int
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futex_atomic_cmpxchg_inuser(int __user *uaddr, int oldval, int newval)
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futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
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{
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return -ENOSYS;
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__asm__ __volatile__(
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"\n1: lduwa [%2] %%asi, %0\n"
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"2: casa [%2] %%asi, %0, %1\n"
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"3:\n"
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" .section .fixup,#alloc,#execinstr\n"
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" .align 4\n"
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"4: ba 3b\n"
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" mov %3, %0\n"
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" .previous\n"
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" .section __ex_table,\"a\"\n"
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" .align 4\n"
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" .word 1b, 4b\n"
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" .word 2b, 4b\n"
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" .previous\n"
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: "=&r" (oldval)
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: "r" (newval), "r" (uaddr), "i" (-EFAULT)
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: "memory");
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return oldval;
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}
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#endif /* !(_SPARC64_FUTEX_H) */