mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
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Arnaldo Carvalho de Melo
5ac69737dc
To make it generally accessible by other tools/ projects, also will be used in the tools/arch/*/include/asm/barrier.h files that are being introduced now. Cc: Adrian Hunter <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: David Ahern <[email protected]> Cc: Don Zickus <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Stephane Eranian <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
45 lines
858 B
C
45 lines
858 B
C
#ifndef _TOOLS_LINUX_COMPILER_H_
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#define _TOOLS_LINUX_COMPILER_H_
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/* Optimization barrier */
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/* The "volatile" is due to gcc bugs */
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#define barrier() __asm__ __volatile__("": : :"memory")
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#ifndef __always_inline
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# define __always_inline inline __attribute__((always_inline))
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#endif
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#define __user
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#ifndef __attribute_const__
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# define __attribute_const__
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#endif
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#ifndef __maybe_unused
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# define __maybe_unused __attribute__((unused))
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#endif
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#ifndef __packed
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# define __packed __attribute__((__packed__))
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#endif
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#ifndef __force
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# define __force
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#endif
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#ifndef __weak
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# define __weak __attribute__((weak))
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#endif
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#ifndef likely
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# define likely(x) __builtin_expect(!!(x), 1)
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#endif
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#ifndef unlikely
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# define unlikely(x) __builtin_expect(!!(x), 0)
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#endif
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#define ACCESS_ONCE(x) (*(volatile typeof(x) *)&(x))
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#endif /* _TOOLS_LINUX_COMPILER_H */
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