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 10 struct 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 19 struct evsel; 20 struct 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 26 struct 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); 30 int perf_bpf_filter__parse(struct list_head *expr_head, const char *str); 31 int perf_bpf_filter__prepare(struct evsel *evsel, struct target *target); 32 int perf_bpf_filter__destroy(struct evsel *evsel); 33 u64 perf_bpf_filter__lost_count(struct evsel *evsel); 34 int perf_bpf_filter__pin(void); 35 int perf_bpf_filter__unpin(void); 36 37 #else /* !HAVE_BPF_SKEL */ 38 39 #include <errno.h> 40 perf_bpf_filter__parse(struct list_head * expr_head __maybe_unused,const char * str __maybe_unused)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 } perf_bpf_filter__prepare(struct evsel * evsel __maybe_unused,struct target * target __maybe_unused)48static inline int perf_bpf_filter__prepare(struct evsel *evsel __maybe_unused, 49 struct target *target __maybe_unused) 50 { 51 return -EOPNOTSUPP; 52 } perf_bpf_filter__destroy(struct evsel * evsel __maybe_unused)53static inline int perf_bpf_filter__destroy(struct evsel *evsel __maybe_unused) 54 { 55 return -EOPNOTSUPP; 56 } perf_bpf_filter__lost_count(struct evsel * evsel __maybe_unused)57static inline u64 perf_bpf_filter__lost_count(struct evsel *evsel __maybe_unused) 58 { 59 return 0; 60 } perf_bpf_filter__pin(void)61static inline int perf_bpf_filter__pin(void) 62 { 63 return -EOPNOTSUPP; 64 } perf_bpf_filter__unpin(void)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 */ 71