raw_spin_unlock_irqrestore_rcu_node(rnp, flags);
}
-/*
- * Dump detailed information for all tasks blocking the current RCU
- * grace period.
- */
-static void rcu_print_detail_task_stall(void)
-{
- struct rcu_node *rnp = rcu_get_root();
-
- rcu_print_detail_task_stall_rnp(rnp);
- rcu_for_each_leaf_node(rnp)
- rcu_print_detail_task_stall_rnp(rnp);
-}
-
-static void rcu_print_task_stall_begin(struct rcu_node *rnp)
-{
- pr_err("\tTasks blocked on level-%d rcu_node (CPUs %d-%d):",
- rnp->level, rnp->grplo, rnp->grphi);
-}
-
-static void rcu_print_task_stall_end(void)
-{
- pr_cont("\n");
-}
-
/*
* Scan the current list of tasks blocked within RCU read-side critical
* sections, printing out the tid of each.
if (!rcu_preempt_blocked_readers_cgp(rnp))
return 0;
- rcu_print_task_stall_begin(rnp);
+ pr_err("\tTasks blocked on level-%d rcu_node (CPUs %d-%d):",
+ rnp->level, rnp->grplo, rnp->grphi);
t = list_entry(rnp->gp_tasks->prev,
struct task_struct, rcu_node_entry);
list_for_each_entry_continue(t, &rnp->blkd_tasks, rcu_node_entry) {
pr_cont(" P%d", t->pid);
ndetected++;
}
- rcu_print_task_stall_end();
+ pr_cont("\n");
return ndetected;
}
* Because preemptible RCU does not exist, we never have to check for
* tasks blocked within RCU read-side critical sections.
*/
-static void rcu_print_detail_task_stall(void)
+static void rcu_print_detail_task_stall_rnp(struct rcu_node *rnp)
{
}
unsigned long gpa;
unsigned long j;
int ndetected = 0;
- struct rcu_node *rnp = rcu_get_root();
+ struct rcu_node *rnp;
long totqlen = 0;
/* Kick and suppress, if so configured. */
rcu_dump_cpu_stacks();
/* Complain about tasks blocking the grace period. */
- rcu_print_detail_task_stall();
+ rcu_for_each_leaf_node(rnp)
+ rcu_print_detail_task_stall_rnp(rnp);
} else {
if (rcu_seq_current(&rcu_state.gp_seq) != gp_seq) {
pr_err("INFO: Stall ended before state dump start\n");