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