#ifndef _ASM_GENERIC_TRACE_CLOCK_H#define _ASM_GENERIC_TRACE_CLOCK_H/* * Arch-specific trace clocks. */ /* * Additional trace clocks added to the trace_clocks * array in kernel/trace/trace.c * None if the architecture has not defined it. */#ifndef ARCH_TRACE_CLOCKS# define ARCH_TRACE_CLOCKS#endif #endif  /* _ASM_GENERIC_TRACE_CLOCK_H */