diff options
Diffstat (limited to 'tools/testing/selftests/bpf/progs/test_urandom_usdt.c')
-rw-r--r-- | tools/testing/selftests/bpf/progs/test_urandom_usdt.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/test_urandom_usdt.c b/tools/testing/selftests/bpf/progs/test_urandom_usdt.c new file mode 100644 index 000000000000..3539b02bd5f7 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/test_urandom_usdt.c @@ -0,0 +1,70 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2022 Meta Platforms, Inc. and affiliates. */ + +#include "vmlinux.h" +#include <bpf/bpf_helpers.h> +#include <bpf/usdt.bpf.h> + +int urand_pid; + +int urand_read_without_sema_call_cnt; +int urand_read_without_sema_buf_sz_sum; + +SEC("usdt/./urandom_read:urand:read_without_sema") +int BPF_USDT(urand_read_without_sema, int iter_num, int iter_cnt, int buf_sz) +{ + if (urand_pid != (bpf_get_current_pid_tgid() >> 32)) + return 0; + + __sync_fetch_and_add(&urand_read_without_sema_call_cnt, 1); + __sync_fetch_and_add(&urand_read_without_sema_buf_sz_sum, buf_sz); + + return 0; +} + +int urand_read_with_sema_call_cnt; +int urand_read_with_sema_buf_sz_sum; + +SEC("usdt/./urandom_read:urand:read_with_sema") +int BPF_USDT(urand_read_with_sema, int iter_num, int iter_cnt, int buf_sz) +{ + if (urand_pid != (bpf_get_current_pid_tgid() >> 32)) + return 0; + + __sync_fetch_and_add(&urand_read_with_sema_call_cnt, 1); + __sync_fetch_and_add(&urand_read_with_sema_buf_sz_sum, buf_sz); + + return 0; +} + +int urandlib_read_without_sema_call_cnt; +int urandlib_read_without_sema_buf_sz_sum; + +SEC("usdt/./liburandom_read.so:urandlib:read_without_sema") +int BPF_USDT(urandlib_read_without_sema, int iter_num, int iter_cnt, int buf_sz) +{ + if (urand_pid != (bpf_get_current_pid_tgid() >> 32)) + return 0; + + __sync_fetch_and_add(&urandlib_read_without_sema_call_cnt, 1); + __sync_fetch_and_add(&urandlib_read_without_sema_buf_sz_sum, buf_sz); + + return 0; +} + +int urandlib_read_with_sema_call_cnt; +int urandlib_read_with_sema_buf_sz_sum; + +SEC("usdt/./liburandom_read.so:urandlib:read_with_sema") +int BPF_USDT(urandlib_read_with_sema, int iter_num, int iter_cnt, int buf_sz) +{ + if (urand_pid != (bpf_get_current_pid_tgid() >> 32)) + return 0; + + __sync_fetch_and_add(&urandlib_read_with_sema_call_cnt, 1); + __sync_fetch_and_add(&urandlib_read_with_sema_buf_sz_sum, buf_sz); + + return 0; +} + +char _license[] SEC("license") = "GPL"; |