ftrace.h

 1#ifndef __PERF_FTRACE_H__
 2#define __PERF_FTRACE_H__
 3
 4#include <linux/list.h>
 5
 6#include "target.h"
 7
 8struct evlist;
 9struct hashamp;
10struct stats;
11
12struct perf_ftrace {
13	struct evlist		*evlist;
14	struct target		target;
15	const char		*tracer;
16	struct list_head	filters;
17	struct list_head	notrace;
18	struct list_head	graph_funcs;
19	struct list_head	nograph_funcs;
20	struct list_head	event_pair;
21	struct hashmap		*profile_hash;
22	unsigned long		percpu_buffer_size;
23	bool			inherit;
24	bool			use_nsec;
25	unsigned int		bucket_range;
26	unsigned int		min_latency;
27	unsigned int		max_latency;
28	unsigned int		bucket_num;
29	bool			hide_empty;
30	int			graph_depth;
31	int			func_stack_trace;
32	int			func_irq_info;
33	int			graph_args;
34	int			graph_retval;
35	int			graph_retval_hex;
36	int			graph_retaddr;
37	int			graph_nosleep_time;
38	int			graph_noirqs;
39	int			graph_verbose;
40	int			graph_thresh;
41	int			graph_tail;
42};
43
44struct filter_entry {
45	struct list_head	list;
46	char			name[];
47};
48
49#define NUM_BUCKET  22  /* 20 + 2 (for outliers in both direction) */
50
51#ifdef HAVE_BPF_SKEL
52
53int perf_ftrace__latency_prepare_bpf(struct perf_ftrace *ftrace);
54int perf_ftrace__latency_start_bpf(struct perf_ftrace *ftrace);
55int perf_ftrace__latency_stop_bpf(struct perf_ftrace *ftrace);
56int perf_ftrace__latency_read_bpf(struct perf_ftrace *ftrace,
57				  int buckets[], struct stats *stats);
58int perf_ftrace__latency_cleanup_bpf(struct perf_ftrace *ftrace);
59
60#else  /* !HAVE_BPF_SKEL */
61
62static inline int
63perf_ftrace__latency_prepare_bpf(struct perf_ftrace *ftrace __maybe_unused)
64{
65	return -1;
66}
67
68static inline int
69perf_ftrace__latency_start_bpf(struct perf_ftrace *ftrace __maybe_unused)
70{
71	return -1;
72}
73
74static inline int
75perf_ftrace__latency_stop_bpf(struct perf_ftrace *ftrace __maybe_unused)
76{
77	return -1;
78}
79
80static inline int
81perf_ftrace__latency_read_bpf(struct perf_ftrace *ftrace __maybe_unused,
82			      int buckets[] __maybe_unused,
83			      struct stats *stats __maybe_unused)
84{
85	return -1;
86}
87
88static inline int
89perf_ftrace__latency_cleanup_bpf(struct perf_ftrace *ftrace __maybe_unused)
90{
91	return -1;
92}
93
94#endif  /* HAVE_BPF_SKEL */
95
96#endif  /* __PERF_FTRACE_H__ */