1 /* SPDX-License-Identifier: GPL-2.0 */
25 struct task_struct *bpf_task_from_pid(s32 pid) __ksym;
31 	s32 pid;  in tasks_kfunc_map_value_lookup()  local
34 	status = bpf_probe_read_kernel(&pid, sizeof(pid), &p->pid);  in tasks_kfunc_map_value_lookup()
38 	return bpf_map_lookup_elem(&__tasks_kfunc_map, &pid);  in tasks_kfunc_map_value_lookup()
43 	struct __tasks_kfunc_map_value local, *v;  in tasks_kfunc_map_insert()  local
46 	s32 pid;  in tasks_kfunc_map_insert()  local
48 	status = bpf_probe_read_kernel(&pid, sizeof(pid), &p->pid);  in tasks_kfunc_map_insert()
52 	local.task = NULL;  in tasks_kfunc_map_insert()
53 	status = bpf_map_update_elem(&__tasks_kfunc_map, &pid, &local, BPF_NOEXIST);  in tasks_kfunc_map_insert()
57 	v = bpf_map_lookup_elem(&__tasks_kfunc_map, &pid);  in tasks_kfunc_map_insert()
59 		bpf_map_delete_elem(&__tasks_kfunc_map, &pid);  in tasks_kfunc_map_insert()
60 		return -ENOENT;  in tasks_kfunc_map_insert()
65 		return -ENOENT;  in tasks_kfunc_map_insert()
67 	old = bpf_kptr_xchg(&v->task, acquired);  in tasks_kfunc_map_insert()
70 		return -EEXIST;  in tasks_kfunc_map_insert()