linux/kernel/trace/trace_stat.h

// SPDX-License-Identifier: GPL-2.0
#ifndef __TRACE_STAT_H
#define __TRACE_STAT_H

#include <linux/seq_file.h>

/*
 * If you want to provide a stat file (one-shot statistics), fill
 * an iterator with stat_start/stat_next and a stat_show callbacks.
 * The others callbacks are optional.
 */
struct tracer_stat { … };

/*
 * Destroy or create a stat file
 */
extern int register_stat_tracer(struct tracer_stat *trace);
extern void unregister_stat_tracer(struct tracer_stat *trace);

#endif /* __TRACE_STAT_H */