From 72fe701b70e6ced35d734b676c13efbc8fc769a9 Mon Sep 17 00:00:00 2001
From: "Paul E. McKenney" <paul.mckenney@linaro.org>
Date: Tue, 21 Jun 2011 01:14:54 -0700
Subject: rcu: Add RCU type to callback-invocation tracing

Add a string to the rcu_batch_start() and rcu_batch_end() trace
messages that indicates the RCU type ("rcu_sched", "rcu_bh", or
"rcu_preempt").  The trace messages for the actual invocations
themselves are not marked, as it should be clear from the
rcu_batch_start() and rcu_batch_end() events before and after.

Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---
 kernel/rcutree.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

(limited to 'kernel/rcutree.c')

diff --git a/kernel/rcutree.c b/kernel/rcutree.c
index b953e2c72e25..eb6e731088a0 100644
--- a/kernel/rcutree.c
+++ b/kernel/rcutree.c
@@ -1199,8 +1199,8 @@ static void rcu_do_batch(struct rcu_state *rsp, struct rcu_data *rdp)
 
 	/* If no callbacks are ready, just return.*/
 	if (!cpu_has_callbacks_ready_to_invoke(rdp)) {
-		trace_rcu_batch_start(0, 0);
-		trace_rcu_batch_end(0);
+		trace_rcu_batch_start(rsp->name, 0, 0);
+		trace_rcu_batch_end(rsp->name, 0);
 		return;
 	}
 
@@ -1210,7 +1210,7 @@ static void rcu_do_batch(struct rcu_state *rsp, struct rcu_data *rdp)
 	 */
 	local_irq_save(flags);
 	bl = rdp->blimit;
-	trace_rcu_batch_start(rdp->qlen, bl);
+	trace_rcu_batch_start(rsp->name, rdp->qlen, bl);
 	list = rdp->nxtlist;
 	rdp->nxtlist = *rdp->nxttail[RCU_DONE_TAIL];
 	*rdp->nxttail[RCU_DONE_TAIL] = NULL;
@@ -1233,7 +1233,7 @@ static void rcu_do_batch(struct rcu_state *rsp, struct rcu_data *rdp)
 	}
 
 	local_irq_save(flags);
-	trace_rcu_batch_end(count);
+	trace_rcu_batch_end(rsp->name, count);
 
 	/* Update count, and requeue any remaining callbacks. */
 	rdp->qlen -= count;
-- 
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