diff options
Diffstat (limited to 'tools/testing/selftests/bpf/progs/cpumask_success.c')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/cpumask_success.c | 30 |
1 files changed, 16 insertions, 14 deletions
diff --git a/tools/testing/selftests/bpf/progs/cpumask_success.c b/tools/testing/selftests/bpf/progs/cpumask_success.c index 1d38bc65d4b0..2fcdd7f68ac7 100644 --- a/tools/testing/selftests/bpf/progs/cpumask_success.c +++ b/tools/testing/selftests/bpf/progs/cpumask_success.c @@ -353,7 +353,6 @@ SEC("tp_btf/task_newtask") int BPF_PROG(test_insert_leave, struct task_struct *task, u64 clone_flags) { struct bpf_cpumask *cpumask; - struct __cpumask_map_value *v; cpumask = create_cpumask(); if (!cpumask) @@ -396,31 +395,34 @@ int BPF_PROG(test_insert_remove_release, struct task_struct *task, u64 clone_fla } SEC("tp_btf/task_newtask") -int BPF_PROG(test_insert_kptr_get_release, struct task_struct *task, u64 clone_flags) +int BPF_PROG(test_global_mask_rcu, struct task_struct *task, u64 clone_flags) { - struct bpf_cpumask *cpumask; - struct __cpumask_map_value *v; + struct bpf_cpumask *local, *prev; - cpumask = create_cpumask(); - if (!cpumask) + if (!is_test_task()) return 0; - if (cpumask_map_insert(cpumask)) { + local = create_cpumask(); + if (!local) + return 0; + + prev = bpf_kptr_xchg(&global_mask, local); + if (prev) { + bpf_cpumask_release(prev); err = 3; return 0; } - v = cpumask_map_value_lookup(); - if (!v) { + bpf_rcu_read_lock(); + local = global_mask; + if (!local) { err = 4; + bpf_rcu_read_unlock(); return 0; } - cpumask = bpf_cpumask_kptr_get(&v->cpumask); - if (cpumask) - bpf_cpumask_release(cpumask); - else - err = 5; + bpf_cpumask_test_cpu(0, (const struct cpumask *)local); + bpf_rcu_read_unlock(); return 0; } |