23 lines
496 B
C
23 lines
496 B
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PERF_TSC_H
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#define __PERF_TSC_H
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#include <linux/types.h>
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struct perf_tsc_conversion {
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u16 time_shift;
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u32 time_mult;
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u64 time_zero;
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};
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struct perf_event_mmap_page;
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int perf_read_tsc_conversion(const struct perf_event_mmap_page *pc,
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struct perf_tsc_conversion *tc);
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u64 perf_time_to_tsc(u64 ns, struct perf_tsc_conversion *tc);
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u64 tsc_to_perf_time(u64 cyc, struct perf_tsc_conversion *tc);
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u64 rdtsc(void);
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#endif // __PERF_TSC_H
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