diff options
Diffstat (limited to 'tools/testing/selftests/bpf/progs/cgrp_ls_recursion.c')
-rw-r--r-- | tools/testing/selftests/bpf/progs/cgrp_ls_recursion.c | 84 |
1 files changed, 67 insertions, 17 deletions
diff --git a/tools/testing/selftests/bpf/progs/cgrp_ls_recursion.c b/tools/testing/selftests/bpf/progs/cgrp_ls_recursion.c index a043d8fefd..610c2427fd 100644 --- a/tools/testing/selftests/bpf/progs/cgrp_ls_recursion.c +++ b/tools/testing/selftests/bpf/progs/cgrp_ls_recursion.c @@ -21,50 +21,100 @@ struct { __type(value, long); } map_b SEC(".maps"); +int target_hid = 0; +bool is_cgroup1 = 0; + +struct cgroup *bpf_task_get_cgroup1(struct task_struct *task, int hierarchy_id) __ksym; +void bpf_cgroup_release(struct cgroup *cgrp) __ksym; + +static void __on_lookup(struct cgroup *cgrp) +{ + bpf_cgrp_storage_delete(&map_a, cgrp); + bpf_cgrp_storage_delete(&map_b, cgrp); +} + SEC("fentry/bpf_local_storage_lookup") int BPF_PROG(on_lookup) { struct task_struct *task = bpf_get_current_task_btf(); + struct cgroup *cgrp; + + if (is_cgroup1) { + cgrp = bpf_task_get_cgroup1(task, target_hid); + if (!cgrp) + return 0; - bpf_cgrp_storage_delete(&map_a, task->cgroups->dfl_cgrp); - bpf_cgrp_storage_delete(&map_b, task->cgroups->dfl_cgrp); + __on_lookup(cgrp); + bpf_cgroup_release(cgrp); + return 0; + } + + __on_lookup(task->cgroups->dfl_cgrp); return 0; } -SEC("fentry/bpf_local_storage_update") -int BPF_PROG(on_update) +static void __on_update(struct cgroup *cgrp) { - struct task_struct *task = bpf_get_current_task_btf(); long *ptr; - ptr = bpf_cgrp_storage_get(&map_a, task->cgroups->dfl_cgrp, 0, - BPF_LOCAL_STORAGE_GET_F_CREATE); + ptr = bpf_cgrp_storage_get(&map_a, cgrp, 0, BPF_LOCAL_STORAGE_GET_F_CREATE); if (ptr) *ptr += 1; - ptr = bpf_cgrp_storage_get(&map_b, task->cgroups->dfl_cgrp, 0, - BPF_LOCAL_STORAGE_GET_F_CREATE); + ptr = bpf_cgrp_storage_get(&map_b, cgrp, 0, BPF_LOCAL_STORAGE_GET_F_CREATE); if (ptr) *ptr += 1; +} +SEC("fentry/bpf_local_storage_update") +int BPF_PROG(on_update) +{ + struct task_struct *task = bpf_get_current_task_btf(); + struct cgroup *cgrp; + + if (is_cgroup1) { + cgrp = bpf_task_get_cgroup1(task, target_hid); + if (!cgrp) + return 0; + + __on_update(cgrp); + bpf_cgroup_release(cgrp); + return 0; + } + + __on_update(task->cgroups->dfl_cgrp); return 0; } -SEC("tp_btf/sys_enter") -int BPF_PROG(on_enter, struct pt_regs *regs, long id) +static void __on_enter(struct pt_regs *regs, long id, struct cgroup *cgrp) { - struct task_struct *task; long *ptr; - task = bpf_get_current_task_btf(); - ptr = bpf_cgrp_storage_get(&map_a, task->cgroups->dfl_cgrp, 0, - BPF_LOCAL_STORAGE_GET_F_CREATE); + ptr = bpf_cgrp_storage_get(&map_a, cgrp, 0, BPF_LOCAL_STORAGE_GET_F_CREATE); if (ptr) *ptr = 200; - ptr = bpf_cgrp_storage_get(&map_b, task->cgroups->dfl_cgrp, 0, - BPF_LOCAL_STORAGE_GET_F_CREATE); + ptr = bpf_cgrp_storage_get(&map_b, cgrp, 0, BPF_LOCAL_STORAGE_GET_F_CREATE); if (ptr) *ptr = 100; +} + +SEC("tp_btf/sys_enter") +int BPF_PROG(on_enter, struct pt_regs *regs, long id) +{ + struct task_struct *task = bpf_get_current_task_btf(); + struct cgroup *cgrp; + + if (is_cgroup1) { + cgrp = bpf_task_get_cgroup1(task, target_hid); + if (!cgrp) + return 0; + + __on_enter(regs, id, cgrp); + bpf_cgroup_release(cgrp); + return 0; + } + + __on_enter(regs, id, task->cgroups->dfl_cgrp); return 0; } |