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