bpf_perf_event_read_simple 5636 tools/lib/bpf/libbpf.c 	ret = bpf_perf_event_read_simple(cpu_buf->base, pb->mmap_size,
bpf_perf_event_read_simple  422 tools/lib/bpf/libbpf.h bpf_perf_event_read_simple(void *mmap_mem, size_t mmap_size, size_t page_size,