From: Paolo Bonzini <pbonzini@redhat.com>
Date: Tue, 9 Aug 2011 20:49:27 +0000 (-0400)
Subject: put thread offline while waiting for the init flag
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=3bf02b5bfebfd44de04262fd520e66423ba16e9a;p=deliverable%2Fuserspace-rcu.git

put thread offline while waiting for the init flag

Otherwise, the call_rcu thread might end up in a synchronize_rcu that
never ends.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/tests/rcutorture.h b/tests/rcutorture.h
index 5ba3d2b..4c6f9da 100644
--- a/tests/rcutorture.h
+++ b/tests/rcutorture.h
@@ -127,9 +127,10 @@ void *rcu_read_perf_test(void *arg)
 	rcu_register_thread();
 	run_on(me);
 	uatomic_inc(&nthreadsrunning);
+	put_thread_offline();
 	while (goflag == GOFLAG_INIT)
 		poll(NULL, 0, 1);
-	mark_rcu_quiescent_state();
+	put_thread_online();
 	while (goflag == GOFLAG_RUN) {
 		for (i = 0; i < RCU_READ_RUN; i++) {
 			rcu_read_lock();
@@ -286,9 +287,10 @@ void *rcu_read_stress_test(void *arg)
 	int pc;
 
 	rcu_register_thread();
+	put_thread_offline();
 	while (goflag == GOFLAG_INIT)
 		poll(NULL, 0, 1);
-	mark_rcu_quiescent_state();
+	put_thread_online();
 	while (goflag == GOFLAG_RUN) {
 		rcu_read_lock();
 		p = rcu_dereference(rcu_stress_current);