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authorPaul E. McKenney <paul.mckenney@linaro.org>2011-10-02 07:44:32 -0700
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2011-12-11 10:31:26 -0800
commit91afaf300269aa99a4d646969b3258b74294ac4d (patch)
treeb4d7dd5f5c9933be7873b206624f7b55eb25d906 /kernel/rcupdate.c
parenta8eecf2248a45bf69f0625b23c003ad2ccd765ee (diff)
downloadvexpress-lsk-91afaf300269aa99a4d646969b3258b74294ac4d.tar.gz
rcu: Add failure tracing to rcutorture
Trace the rcutorture RCU accesses and dump the trace buffer when the first failure is detected. Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'kernel/rcupdate.c')
-rw-r--r--kernel/rcupdate.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/kernel/rcupdate.c b/kernel/rcupdate.c
index c5b98e565ae..92e771d7b44 100644
--- a/kernel/rcupdate.c
+++ b/kernel/rcupdate.c
@@ -316,3 +316,13 @@ struct debug_obj_descr rcuhead_debug_descr = {
};
EXPORT_SYMBOL_GPL(rcuhead_debug_descr);
#endif /* #ifdef CONFIG_DEBUG_OBJECTS_RCU_HEAD */
+
+#if defined(CONFIG_TREE_RCU) || defined(CONFIG_TREE_PREEMPT_RCU) || defined(CONFIG_RCU_TRACE)
+void do_trace_rcu_torture_read(char *rcutorturename, struct rcu_head *rhp)
+{
+ trace_rcu_torture_read(rcutorturename, rhp);
+}
+EXPORT_SYMBOL_GPL(do_trace_rcu_torture_read);
+#else
+#define do_trace_rcu_torture_read(rcutorturename, rhp) do { } while (0)
+#endif