1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __PERF_BPF_COUNTER_H 3 #define __PERF_BPF_COUNTER_H 1 4 5 #include <linux/list.h> 6 7 struct evsel; 8 struct target; 9 struct bpf_counter; 10 11 typedef int (*bpf_counter_evsel_op)(struct evsel *evsel); 12 typedef int (*bpf_counter_evsel_target_op)(struct evsel *evsel, 13 struct target *target); 14 typedef int (*bpf_counter_evsel_install_pe_op)(struct evsel *evsel, 15 int cpu, 16 int fd); 17 18 struct bpf_counter_ops { 19 bpf_counter_evsel_target_op load; 20 bpf_counter_evsel_op enable; 21 bpf_counter_evsel_op read; 22 bpf_counter_evsel_op destroy; 23 bpf_counter_evsel_install_pe_op install_pe; 24 }; 25 26 struct bpf_counter { 27 void *skel; 28 struct list_head list; 29 }; 30 31 #ifdef HAVE_BPF_SKEL 32 33 int bpf_counter__load(struct evsel *evsel, struct target *target); 34 int bpf_counter__enable(struct evsel *evsel); 35 int bpf_counter__read(struct evsel *evsel); 36 void bpf_counter__destroy(struct evsel *evsel); 37 int bpf_counter__install_pe(struct evsel *evsel, int cpu, int fd); 38 39 #else /* HAVE_BPF_SKEL */ 40 41 #include<linux/err.h> 42 43 static inline int bpf_counter__load(struct evsel *evsel __maybe_unused, 44 struct target *target __maybe_unused) 45 { 46 return 0; 47 } 48 49 static inline int bpf_counter__enable(struct evsel *evsel __maybe_unused) 50 { 51 return 0; 52 } 53 54 static inline int bpf_counter__read(struct evsel *evsel __maybe_unused) 55 { 56 return -EAGAIN; 57 } 58 59 static inline void bpf_counter__destroy(struct evsel *evsel __maybe_unused) 60 { 61 } 62 63 static inline int bpf_counter__install_pe(struct evsel *evsel __maybe_unused, 64 int cpu __maybe_unused, 65 int fd __maybe_unused) 66 { 67 return 0; 68 } 69 70 #endif /* HAVE_BPF_SKEL */ 71 72 #endif /* __PERF_BPF_COUNTER_H */ 73