mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
d8ea37d5de
Add stat_release() callback to struct tracer_stat, so a stat tracer can release it's entries after the stat file has been read out. Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <4A51B16A.6020708@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
33 lines
973 B
C
33 lines
973 B
C
#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 {
|
|
/* The name of your stat file */
|
|
const char *name;
|
|
/* Iteration over statistic entries */
|
|
void *(*stat_start)(struct tracer_stat *trace);
|
|
void *(*stat_next)(void *prev, int idx);
|
|
/* Compare two entries for stats sorting */
|
|
int (*stat_cmp)(void *p1, void *p2);
|
|
/* Print a stat entry */
|
|
int (*stat_show)(struct seq_file *s, void *p);
|
|
/* Release an entry */
|
|
void (*stat_release)(void *stat);
|
|
/* Print the headers of your stat entries */
|
|
int (*stat_headers)(struct seq_file *s);
|
|
};
|
|
|
|
/*
|
|
* 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 */
|