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[tip/core/rcu,22/86] rcu: mark rcutorture boosting callback as being on-stack

Message ID 1304256126-26015-22-git-send-email-paulmck@linux.vnet.ibm.com
State New
Headers show

Commit Message

Paul E. McKenney May 1, 2011, 1:21 p.m. UTC 
From: Paul E. McKenney <paul.mckenney@linaro.org>

The CONFIG_DEBUG_OBJECTS_RCU_HEAD facility requires that on-stack RCU
callbacks be flagged explicitly to debug-objects using the
init_rcu_head_on_stack() and destroy_rcu_head_on_stack() functions.
This commit applies those functions to the rcutorture code that tests
RCU priority boosting.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---
 kernel/rcutorture.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
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Patch

diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c
index 735d172..60984262 100644
--- a/kernel/rcutorture.c
+++ b/kernel/rcutorture.c
@@ -751,6 +751,7 @@  static int rcu_torture_boost(void *arg)
 		n_rcu_torture_boost_rterror++;
 	}
 
+	init_rcu_head_on_stack(&rbi.rcu);
 	/* Each pass through the following loop does one boost-test cycle. */
 	do {
 		/* Wait for the next test interval. */
@@ -810,6 +811,7 @@  checkwait:	rcu_stutter_wait("rcu_torture_boost");
 
 	/* Clean up and exit. */
 	VERBOSE_PRINTK_STRING("rcu_torture_boost task stopping");
+	destroy_rcu_head_on_stack(&rbi.rcu);
 	rcutorture_shutdown_absorb("rcu_torture_boost");
 	while (!kthread_should_stop() || rbi.inflight)
 		schedule_timeout_uninterruptible(1);