diff options
Diffstat (limited to 'samples/bpf/test_current_task_under_cgroup.bpf.c')
-rw-r--r-- | samples/bpf/test_current_task_under_cgroup.bpf.c | 43 |
1 files changed, 0 insertions, 43 deletions
diff --git a/samples/bpf/test_current_task_under_cgroup.bpf.c b/samples/bpf/test_current_task_under_cgroup.bpf.c deleted file mode 100644 index 58b9cf7ed659..000000000000 --- a/samples/bpf/test_current_task_under_cgroup.bpf.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 "vmlinux.h" -#include <linux/version.h> -#include <bpf/bpf_helpers.h> -#include <bpf/bpf_tracing.h> -#include <bpf/bpf_core_read.h> - -struct { - __uint(type, BPF_MAP_TYPE_CGROUP_ARRAY); - __uint(key_size, sizeof(u32)); - __uint(value_size, sizeof(u32)); - __uint(max_entries, 1); -} cgroup_map SEC(".maps"); - -struct { - __uint(type, BPF_MAP_TYPE_ARRAY); - __type(key, u32); - __type(value, u64); - __uint(max_entries, 1); -} perf_map SEC(".maps"); - -/* Writes the last PID that called sync to a map at index 0 */ -SEC("ksyscall/sync") -int BPF_KSYSCALL(bpf_prog1) -{ - 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; |