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/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_TRACE_CLOCK_H #define _LINUX_TRACE_CLOCK_H /* * 3 trace clock variants, with differing scalability/precision * tradeoffs: * * - local: CPU-local trace clock * - medium: scalable global clock with some jitter * - global: globally monotonic, serialized clock */ #include <linux/compiler.h> #include <linux/types.h> #include <asm/trace_clock.h> extern u64 notrace trace_clock_local(void); extern u64 notrace trace_clock(void); extern u64 notrace trace_clock_jiffies(void); extern u64 notrace trace_clock_global(void); extern u64 notrace trace_clock_counter(void); #endif /* _LINUX_TRACE_CLOCK_H */