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rcu: Convert rcu_unlock_preempted_task tracepoint to ->gp_seq

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

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Paul E. McKenney 2018-05-01 13:35:20 -07:00
parent 598ce09480
commit 865aa1e08d
2 changed files with 8 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
include/trace/events/rcu.h
View file

@ -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)

4
kernel/rcu/tree_plugin.h
View file

@ -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);
}