[PATCH tip/core/rcu 24/40] rcu: Convert rcu_unlock_preempted_task tracepoint to ->gp_seq

From: Paul E. McKenney
Date: Mon Jun 25 2018 - 20:11:33 EST


This commit makes the rcu_unlock_preempted_task tracepoint use ->gp_seq
instead of ->gpnum.

Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
---
include/trace/events/rcu.h | 12 ++++++------
kernel/rcu/tree_plugin.h | 4 ++--
2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/include/trace/events/rcu.h b/include/trace/events/rcu.h
index 38dbd97d65a3..95b7491196aa 100644
--- a/include/trace/events/rcu.h
+++ b/include/trace/events/rcu.h
@@ -325,23 +325,23 @@ TRACE_EVENT(rcu_preempt_task,
*/
TRACE_EVENT(rcu_unlock_preempted_task,

- TP_PROTO(const char *rcuname, unsigned long gpnum, int pid),
+ TP_PROTO(const char *rcuname, unsigned long gp_seq, int pid),

- TP_ARGS(rcuname, gpnum, pid),
+ TP_ARGS(rcuname, gp_seq, pid),

TP_STRUCT__entry(
__field(const char *, rcuname)
- __field(unsigned long, gpnum)
+ __field(unsigned long, gp_seq)
__field(int, pid)
),

TP_fast_assign(
__entry->rcuname = rcuname;
- __entry->gpnum = gpnum;
+ __entry->gp_seq = gp_seq;
__entry->pid = pid;
),

- TP_printk("%s %lu %d", __entry->rcuname, __entry->gpnum, __entry->pid)
+ TP_printk("%s %lu %d", __entry->rcuname, __entry->gp_seq, __entry->pid)
);

/*
@@ -762,7 +762,7 @@ TRACE_EVENT(rcu_barrier,
do { } while (0)
#define trace_rcu_nocb_wake(rcuname, cpu, reason) do { } while (0)
#define trace_rcu_preempt_task(rcuname, pid, gp_seq) do { } while (0)
-#define trace_rcu_unlock_preempted_task(rcuname, gpnum, pid) do { } while (0)
+#define trace_rcu_unlock_preempted_task(rcuname, gp_seq, pid) do { } while (0)
#define trace_rcu_quiescent_state_report(rcuname, gpnum, mask, qsmask, level, \
grplo, grphi, gp_tasks) do { } \
while (0)
diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
index 02ca3b4e6a8f..a10b0e26ce19 100644
--- a/kernel/rcu/tree_plugin.h
+++ b/kernel/rcu/tree_plugin.h
@@ -545,7 +545,7 @@ void rcu_read_unlock_special(struct task_struct *t)
list_del_init(&t->rcu_node_entry);
t->rcu_blocked_node = NULL;
trace_rcu_unlock_preempted_task(TPS("rcu_preempt"),
- rnp->gpnum, t->pid);
+ rnp->gp_seq, t->pid);
if (&t->rcu_node_entry == rnp->gp_tasks)
rnp->gp_tasks = np;
if (&t->rcu_node_entry == rnp->exp_tasks)
@@ -708,7 +708,7 @@ static void rcu_preempt_check_blocked_tasks(struct rcu_node *rnp)
t = container_of(rnp->gp_tasks, struct task_struct,
rcu_node_entry);
trace_rcu_unlock_preempted_task(TPS("rcu_preempt-GPS"),
- rnp->gpnum, t->pid);
+ rnp->gp_seq, t->pid);
}
WARN_ON_ONCE(rnp->qsmask);
}
--
2.17.1