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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef PERF_UTIL_BPF_FILTER_H
3#define PERF_UTIL_BPF_FILTER_H
4
5#include <linux/list.h>
6
7#include "bpf_skel/sample-filter.h"
8#include "util/debug.h"
9
10struct perf_bpf_filter_expr {
11 struct list_head list;
12 struct list_head groups;
13 enum perf_bpf_filter_op op;
14 int part;
15 enum perf_bpf_filter_term term;
16 unsigned long val;
17};
18
19struct evsel;
20struct target;
21
22/* path in BPF-fs for the pinned program and maps */
23#define PERF_BPF_FILTER_PIN_PATH "perf_filter"
24
25#ifdef HAVE_BPF_SKEL
26struct perf_bpf_filter_expr *perf_bpf_filter_expr__new(enum perf_bpf_filter_term term,
27 int part,
28 enum perf_bpf_filter_op op,
29 unsigned long val);
30int perf_bpf_filter__parse(struct list_head *expr_head, const char *str);
31int perf_bpf_filter__prepare(struct evsel *evsel, struct target *target);
32int perf_bpf_filter__destroy(struct evsel *evsel);
33u64 perf_bpf_filter__lost_count(struct evsel *evsel);
34int perf_bpf_filter__pin(void);
35int perf_bpf_filter__unpin(void);
36
37#else /* !HAVE_BPF_SKEL */
38
39#include <errno.h>
40
41static inline int perf_bpf_filter__parse(struct list_head *expr_head __maybe_unused,
42 const char *str __maybe_unused)
43{
44 pr_err("Error: BPF filter is requested but perf is not built with BPF.\n"
45 "\tPlease make sure to build with libbpf and BPF skeleton.\n");
46 return -EOPNOTSUPP;
47}
48static inline int perf_bpf_filter__prepare(struct evsel *evsel __maybe_unused,
49 struct target *target __maybe_unused)
50{
51 return -EOPNOTSUPP;
52}
53static inline int perf_bpf_filter__destroy(struct evsel *evsel __maybe_unused)
54{
55 return -EOPNOTSUPP;
56}
57static inline u64 perf_bpf_filter__lost_count(struct evsel *evsel __maybe_unused)
58{
59 return 0;
60}
61static inline int perf_bpf_filter__pin(void)
62{
63 return -EOPNOTSUPP;
64}
65static inline int perf_bpf_filter__unpin(void)
66{
67 return -EOPNOTSUPP;
68}
69#endif /* HAVE_BPF_SKEL*/
70#endif /* PERF_UTIL_BPF_FILTER_H */