Commit-ID: 945fa9c631b04febe295a3a2a00c7e4a3cfb97db Gitweb: http://git.kernel.org/tip/945fa9c631b04febe295a3a2a00c7e4a3cfb97db Author: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> AuthorDate: Fri, 7 Mar 2014 14:15:28 -0800 Committer: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> CommitDate: Wed, 14 May 2014 09:46:07 -0700 torture: Dump ftrace buffer when the RCU grace period stalls This commit adds a call to rcutorture_trace_dump() to dump the ftrace buffer when the RCU grace period stalls in order to help debug the stall. Note that this is different than the RCU CPU stall warning, as it is rcutorture detecting the stall rather than the underlying RCU implementation. Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> Reviewed-by: Josh Triplett <josh@xxxxxxxxxxxxxxxx> --- kernel/rcu/rcutorture.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index 80d2d24..9decce0 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -1034,6 +1034,7 @@ rcu_torture_printk(char *page) "??? Writer stall state %d g%lu c%lu f%#x\n", rcu_torture_writer_state, gpnum, completed, flags); + rcutorture_trace_dump(); } rtcv_snap = rcu_torture_current_version; } -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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