tools/perf/util/bpf-filter.h

   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
   9 struct perf_bpf_filter_expr {
  10         struct list_head list;
  11         struct list_head groups;
  12         enum perf_bpf_filter_op op;
  13         int part;
  14         enum perf_bpf_filter_term term;
  15         unsigned long val;
  16 };
  17
  18 struct evsel;
  19 struct target;
  20
  21 /* path in BPF-fs for the pinned program and maps */
  22 #define PERF_BPF_FILTER_PIN_PATH  "perf_filter"
  23
  24 #ifdef HAVE_BPF_SKEL
  25 struct perf_bpf_filter_expr *perf_bpf_filter_expr__new(enum perf_bpf_filter_term term,
  26                                                        int part,
  27                                                        enum perf_bpf_filter_op op,
  28                                                        unsigned long val);
  29 int perf_bpf_filter__parse(struct list_head *expr_head, const char *str);
  30 int perf_bpf_filter__prepare(struct evsel *evsel, struct target *target);
  31 int perf_bpf_filter__destroy(struct evsel *evsel);
  32 u64 perf_bpf_filter__lost_count(struct evsel *evsel);
  33 int perf_bpf_filter__pin(void);
  34 int perf_bpf_filter__unpin(void);
  35
  36 #else /* !HAVE_BPF_SKEL */
  37
  38 static inline int perf_bpf_filter__parse(struct list_head *expr_head __maybe_unused,
  39                                          const char *str __maybe_unused)
  40 {
  41         return -EOPNOTSUPP;
  42 }
  43 static inline int perf_bpf_filter__prepare(struct evsel *evsel __maybe_unused,
  44                                            struct target *target __maybe_unused)
  45 {
  46         return -EOPNOTSUPP;
  47 }
  48 static inline int perf_bpf_filter__destroy(struct evsel *evsel __maybe_unused)
  49 {
  50         return -EOPNOTSUPP;
  51 }
  52 static inline u64 perf_bpf_filter__lost_count(struct evsel *evsel __maybe_unused)
  53 {
  54         return 0;
  55 }
  56 static inline int perf_bpf_filter__pin(void)
  57 {
  58         return -EOPNOTSUPP;
  59 }
  60 static inline int perf_bpf_filter__unpin(void)
  61 {
  62         return -EOPNOTSUPP;
  63 }
  64 #endif /* HAVE_BPF_SKEL*/
  65 #endif /* PERF_UTIL_BPF_FILTER_H */