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#ifndef __LINUX_PREEMPT_H
#define __LINUX_PREEMPT_H
/*
* include/linux/preempt.h - macros for accessing and manipulating
* preempt_count (used for kernel preemption, interrupt count, etc.)
*/
#include <linux/config.h>
#define preempt_count() (current_thread_info()->preempt_count)
#define inc_preempt_count() \
do { \
preempt_count()++; \
} while (0)
#define dec_preempt_count() \
do { \
preempt_count()--; \
} while (0)
#ifdef CONFIG_PREEMPT
extern void preempt_schedule(void);
#define preempt_disable() \
do { \
inc_preempt_count(); \
barrier(); \
} while (0)
#define preempt_enable_no_resched() \
do { \
barrier(); \
dec_preempt_count(); \
} while (0)
#define preempt_check_resched() \
do { \
if (unlikely(test_thread_flag(TIF_NEED_RESCHED))) \
preempt_schedule(); \
} while (0)
#define preempt_enable() \
do { \
preempt_enable_no_resched(); \
preempt_check_resched(); \
} while (0)
#else
#define preempt_disable() do { } while (0)
#define preempt_enable_no_resched() do { } while (0)
#define preempt_enable() do { } while (0)
#define preempt_check_resched() do { } while (0)
#endif
#endif /* __LINUX_PREEMPT_H */