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rcu: actually register threads that have RCU read-side critical sections

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Otherwise, grace periods are detected too early!

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2015-07-09 08:55:38 +02:00
parent c170aad8b0
commit ab28bd2312
5 changed files with 21 additions and 0 deletions
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4
tests/test-rcu-list.c
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@ -108,6 +108,8 @@ static void *rcu_q_reader(void *arg)
long long n_reads_local = 0;
struct list_element *el;
rcu_register_thread();
*(struct rcu_reader_data **)arg = &rcu_reader;
atomic_inc(&nthreadsrunning);
while (goflag == GOFLAG_INIT) {
@ -129,6 +131,8 @@ static void *rcu_q_reader(void *arg)
qemu_mutex_lock(&counts_mutex);
n_reads += n_reads_local;
qemu_mutex_unlock(&counts_mutex);
rcu_unregister_thread();
return NULL;
}