| // SPDX-License-Identifier: GPL-2.0 |
| // Copyright (c) 2020 Facebook |
| #include <bpf/bpf_helpers.h> |
| char _license[] SEC("license") = "GPL"; |
| __uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY); |
| __uint(value_size, sizeof(int)); |
| __uint(key_size, sizeof(int)); |
| const volatile int batch_cnt = 0; |
| long dropped __attribute__((aligned(128))) = 0; |
| SEC("fentry/" SYS_PREFIX "sys_getpgid") |
| int bench_perfbuf(void *ctx) |
| for (i = 0; i < batch_cnt; i++) { |
| if (bpf_perf_event_output(ctx, &perfbuf, BPF_F_CURRENT_CPU, |
| &sample_val, sizeof(sample_val))) |
| __sync_add_and_fetch(&dropped, 1); |