bpf_perf_prog_read_value 895 kernel/trace/bpf_trace.c BPF_CALL_3(bpf_perf_prog_read_value, struct bpf_perf_event_data_kern *, ctx, bpf_perf_prog_read_value 913 kernel/trace/bpf_trace.c .func = bpf_perf_prog_read_value, bpf_perf_prog_read_value 62 samples/bpf/trace_event_kern.c ret = bpf_perf_prog_read_value(ctx, (void *)&value_buf, sizeof(struct bpf_perf_event_value)); bpf_perf_prog_read_value 111 tools/testing/selftests/bpf/bpf_helpers.h static int (*bpf_perf_prog_read_value)(void *ctx, void *buf,