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| author | Paul E. McKenney <paul.mckenney@linaro.org> | 2011-10-02 16:44:32 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2011-12-11 19:31:26 +0100 |
| commit | 91afaf300269aa99a4d646969b3258b74294ac4d (patch) | |
| tree | b4d7dd5f5c9933be7873b206624f7b55eb25d906 /kernel/rcupdate.c | |
| parent | trace: Allow ftrace_dump() to be called from modules (diff) | |
| download | linux-91afaf300269aa99a4d646969b3258b74294ac4d.tar.xz linux-91afaf300269aa99a4d646969b3258b74294ac4d.zip | |
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.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/kernel/rcupdate.c b/kernel/rcupdate.c index c5b98e565aee..92e771d7b44b 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 |