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Return -EEXIST when the old cpu call_rcu_data has not been removed
[urcu.git]
/
urcu-call-rcu-impl.h
diff --git
a/urcu-call-rcu-impl.h
b/urcu-call-rcu-impl.h
index c822646e03834bbf26224feae2a71bcdfb5bf8e1..ae93468d8beb4e9fb9167a4dcc5b462892f3d9a2 100644
(file)
--- a/
urcu-call-rcu-impl.h
+++ b/
urcu-call-rcu-impl.h
@@
-396,11
+396,19
@@
int set_cpu_call_rcu_data(int cpu, struct call_rcu_data *crdp)
errno = EINVAL;
return -EINVAL;
}
errno = EINVAL;
return -EINVAL;
}
+
if (per_cpu_call_rcu_data == NULL) {
call_rcu_unlock(&call_rcu_mutex);
errno = ENOMEM;
return -ENOMEM;
}
if (per_cpu_call_rcu_data == NULL) {
call_rcu_unlock(&call_rcu_mutex);
errno = ENOMEM;
return -ENOMEM;
}
+
+ if (per_cpu_call_rcu_data[cpu] != NULL && crdp != NULL) {
+ call_rcu_unlock(&call_rcu_mutex);
+ errno = EEXIST;
+ return -EEXIST;
+ }
+
per_cpu_call_rcu_data[cpu] = crdp;
call_rcu_unlock(&call_rcu_mutex);
return 0;
per_cpu_call_rcu_data[cpu] = crdp;
call_rcu_unlock(&call_rcu_mutex);
return 0;
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