diff options
Diffstat (limited to 'net/bpf/test_run.c')
| -rw-r--r-- | net/bpf/test_run.c | 21 |
1 files changed, 9 insertions, 12 deletions
diff --git a/net/bpf/test_run.c b/net/bpf/test_run.c index fde5db93507c..c1c30a9f76f3 100644 --- a/net/bpf/test_run.c +++ b/net/bpf/test_run.c @@ -252,9 +252,7 @@ __bpf_prog_test_run_raw_tp(void *data) struct bpf_raw_tp_test_run_info *info = data; rcu_read_lock(); - migrate_disable(); info->retval = BPF_PROG_RUN(info->prog, info->ctx); - migrate_enable(); rcu_read_unlock(); } @@ -266,6 +264,7 @@ int bpf_prog_test_run_raw_tp(struct bpf_prog *prog, __u32 ctx_size_in = kattr->test.ctx_size_in; struct bpf_raw_tp_test_run_info info; int cpu = kattr->test.cpu, err = 0; + int current_cpu; /* doesn't support data_in/out, ctx_out, duration, or repeat */ if (kattr->test.data_in || kattr->test.data_out || @@ -293,27 +292,25 @@ int bpf_prog_test_run_raw_tp(struct bpf_prog *prog, info.prog = prog; + current_cpu = get_cpu(); if ((kattr->test.flags & BPF_F_TEST_RUN_ON_CPU) == 0 || - cpu == smp_processor_id()) { + cpu == current_cpu) { __bpf_prog_test_run_raw_tp(&info); - } else { + } else if (cpu >= nr_cpu_ids || !cpu_online(cpu)) { /* smp_call_function_single() also checks cpu_online() * after csd_lock(). However, since cpu is from user * space, let's do an extra quick check to filter out * invalid value before smp_call_function_single(). */ - if (cpu >= nr_cpu_ids || !cpu_online(cpu)) { - err = -ENXIO; - goto out; - } - + err = -ENXIO; + } else { err = smp_call_function_single(cpu, __bpf_prog_test_run_raw_tp, &info, 1); - if (err) - goto out; } + put_cpu(); - if (copy_to_user(&uattr->test.retval, &info.retval, sizeof(u32))) + if (!err && + copy_to_user(&uattr->test.retval, &info.retval, sizeof(u32))) err = -EFAULT; out: |