Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge branch 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: Avoid 'constant_test_bit()' misoptimization due to cast to non-volatile
+1
-1
+1
-1
arch/x86/include/asm/bitops.h
+1
-1
arch/x86/include/asm/bitops.h
···
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static __always_inline int constant_test_bit(unsigned int nr, const volatile unsigned long *addr)
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{
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return ((1UL << (nr % BITS_PER_LONG)) &
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-
(((unsigned long *)addr)[nr / BITS_PER_LONG])) != 0;
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+
(addr[nr / BITS_PER_LONG])) != 0;
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}
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static inline int variable_test_bit(int nr, volatile const unsigned long *addr)