swh:1:snp:77163734605b0ec556b01d897b7bb4a7e30d46b6
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Tip revision: c470abd4fde40ea6a0846a2beab642a578c0b8cd authored by Linus Torvalds on 19 February 2017, 22:34:00 UTC
Linux 4.10
Tip revision: c470abd
bug.h
#ifndef _TOOLS_ASM_BUG_H
#define _TOOLS_ASM_BUG_H

#include <linux/compiler.h>

#define __WARN_printf(arg...)	do { fprintf(stderr, arg); } while (0)

#define WARN(condition, format...) ({		\
	int __ret_warn_on = !!(condition);	\
	if (unlikely(__ret_warn_on))		\
		__WARN_printf(format);		\
	unlikely(__ret_warn_on);		\
})

#define WARN_ON_ONCE(condition) ({			\
	static int __warned;				\
	int __ret_warn_once = !!(condition);		\
							\
	if (unlikely(__ret_warn_once && !__warned)) {	\
		__warned = true;			\
		WARN_ON(1);				\
	}						\
	unlikely(__ret_warn_once);			\
})

#define WARN_ONCE(condition, format...)	({	\
	static int __warned;			\
	int __ret_warn_once = !!(condition);	\
						\
	if (unlikely(__ret_warn_once))		\
		if (WARN(!__warned, format)) 	\
			__warned = 1;		\
	unlikely(__ret_warn_once);		\
})

#endif /* _TOOLS_ASM_BUG_H */
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