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-rw-r--r--include/trace/events/rcu.h28
-rw-r--r--kernel/rcutiny.c8
-rw-r--r--kernel/rcutree.c8
3 files changed, 26 insertions, 18 deletions
diff --git a/include/trace/events/rcu.h b/include/trace/events/rcu.h
index ab458eb689fb..508824e5a77d 100644
--- a/include/trace/events/rcu.h
+++ b/include/trace/events/rcu.h
@@ -33,27 +33,31 @@ TRACE_EVENT(rcu_utilization,
/*
* Tracepoint for marking the beginning rcu_do_batch, performed to start
- * RCU callback invocation. The first argument is the total number of
- * callbacks (including those that are not yet ready to be invoked),
- * and the second argument is the current RCU-callback batch limit.
+ * RCU callback invocation. The first argument is the RCU flavor,
+ * the second is the total number of callbacks (including those that
+ * are not yet ready to be invoked), and the third argument is the
+ * current RCU-callback batch limit.
*/
TRACE_EVENT(rcu_batch_start,
- TP_PROTO(long qlen, int blimit),
+ TP_PROTO(char *rcuname, long qlen, int blimit),
- TP_ARGS(qlen, blimit),
+ TP_ARGS(rcuname, qlen, blimit),
TP_STRUCT__entry(
+ __field(char *, rcuname)
__field(long, qlen)
__field(int, blimit)
),
TP_fast_assign(
+ __entry->rcuname = rcuname;
__entry->qlen = qlen;
__entry->blimit = blimit;
),
- TP_printk("CBs=%ld bl=%d", __entry->qlen, __entry->blimit)
+ TP_printk("%s CBs=%ld bl=%d",
+ __entry->rcuname, __entry->qlen, __entry->blimit)
);
/*
@@ -106,23 +110,27 @@ TRACE_EVENT(rcu_invoke_kfree_callback,
/*
* Tracepoint for exiting rcu_do_batch after RCU callbacks have been
- * invoked. The first argument is the number of callbacks actually invoked.
+ * invoked. The first argument is the name of the RCU flavor and
+ * the second argument is number of callbacks actually invoked.
*/
TRACE_EVENT(rcu_batch_end,
- TP_PROTO(int callbacks_invoked),
+ TP_PROTO(char *rcuname, int callbacks_invoked),
- TP_ARGS(callbacks_invoked),
+ TP_ARGS(rcuname, callbacks_invoked),
TP_STRUCT__entry(
+ __field(char *, rcuname)
__field(int, callbacks_invoked)
),
TP_fast_assign(
+ __entry->rcuname = rcuname;
__entry->callbacks_invoked = callbacks_invoked;
),
- TP_printk("CBs-invoked=%d", __entry->callbacks_invoked)
+ TP_printk("%s CBs-invoked=%d",
+ __entry->rcuname, __entry->callbacks_invoked)
);
#endif /* _TRACE_RCU_H */
diff --git a/kernel/rcutiny.c b/kernel/rcutiny.c
index 0d28974b78f4..1c37bdd464f1 100644
--- a/kernel/rcutiny.c
+++ b/kernel/rcutiny.c
@@ -168,14 +168,14 @@ static void rcu_process_callbacks(struct rcu_ctrlblk *rcp)
/* If no RCU callbacks ready to invoke, just return. */
if (&rcp->rcucblist == rcp->donetail) {
- RCU_TRACE(trace_rcu_batch_start(0, -1));
- RCU_TRACE(trace_rcu_batch_end(0));
+ RCU_TRACE(trace_rcu_batch_start(rcp->name, 0, -1));
+ RCU_TRACE(trace_rcu_batch_end(rcp->name, 0));
return;
}
/* Move the ready-to-invoke callbacks to a local list. */
local_irq_save(flags);
- RCU_TRACE(trace_rcu_batch_start(0, -1));
+ RCU_TRACE(trace_rcu_batch_start(rcp->name, 0, -1));
list = rcp->rcucblist;
rcp->rcucblist = *rcp->donetail;
*rcp->donetail = NULL;
@@ -197,7 +197,7 @@ static void rcu_process_callbacks(struct rcu_ctrlblk *rcp)
RCU_TRACE(cb_count++);
}
RCU_TRACE(rcu_trace_sub_qlen(rcp, cb_count));
- RCU_TRACE(trace_rcu_batch_end(cb_count));
+ RCU_TRACE(trace_rcu_batch_end(rcp->name, cb_count));
}
/*
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;