diff options
Diffstat (limited to 'samples/bpf/test_current_task_under_cgroup_kern.c')
| -rw-r--r-- | samples/bpf/test_current_task_under_cgroup_kern.c | 43 |
1 files changed, 0 insertions, 43 deletions
diff --git a/samples/bpf/test_current_task_under_cgroup_kern.c b/samples/bpf/test_current_task_under_cgroup_kern.c deleted file mode 100644 index 6dc4f41bb6cb..000000000000 --- a/samples/bpf/test_current_task_under_cgroup_kern.c +++ /dev/null @@ -1,43 +0,0 @@ -/* Copyright (c) 2016 Sargun Dhillon <sargun@sargun.me> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - */ - -#include <linux/ptrace.h> -#include <uapi/linux/bpf.h> -#include <linux/version.h> -#include <bpf/bpf_helpers.h> -#include <uapi/linux/utsname.h> - -struct bpf_map_def SEC("maps") cgroup_map = { - .type = BPF_MAP_TYPE_CGROUP_ARRAY, - .key_size = sizeof(u32), - .value_size = sizeof(u32), - .max_entries = 1, -}; - -struct bpf_map_def SEC("maps") perf_map = { - .type = BPF_MAP_TYPE_ARRAY, - .key_size = sizeof(u32), - .value_size = sizeof(u64), - .max_entries = 1, -}; - -/* Writes the last PID that called sync to a map at index 0 */ -SEC("kprobe/sys_sync") -int bpf_prog1(struct pt_regs *ctx) -{ - u64 pid = bpf_get_current_pid_tgid(); - int idx = 0; - - if (!bpf_current_task_under_cgroup(&cgroup_map, 0)) - return 0; - - bpf_map_update_elem(&perf_map, &idx, &pid, BPF_ANY); - return 0; -} - -char _license[] SEC("license") = "GPL"; -u32 _version SEC("version") = LINUX_VERSION_CODE; |