#ifdef CONFIG_TASKS_TRACE_RCU
-void rcu_read_unlock_trace_special(struct task_struct *t, int nesting);
+void rcu_read_unlock_trace_special(struct task_struct *t);
/**
* rcu_read_lock_trace - mark beginning of RCU-trace read-side critical section
WRITE_ONCE(t->trc_reader_nesting, nesting);
return; // We assume shallow reader nesting.
}
- rcu_read_unlock_trace_special(t, nesting);
+ WARN_ON_ONCE(nesting != 0);
+ rcu_read_unlock_trace_special(t);
}
void call_rcu_tasks_trace(struct rcu_head *rhp, rcu_callback_t func);
static DEFINE_IRQ_WORK(rcu_tasks_trace_iw, rcu_read_unlock_iw);
/* If we are the last reader, wake up the grace-period kthread. */
-void rcu_read_unlock_trace_special(struct task_struct *t, int nesting)
+void rcu_read_unlock_trace_special(struct task_struct *t)
{
int nq = READ_ONCE(t->trc_reader_special.b.need_qs);
// Update .need_qs before ->trc_reader_nesting for irq/NMI handlers.
if (nq)
WRITE_ONCE(t->trc_reader_special.b.need_qs, false);
- WRITE_ONCE(t->trc_reader_nesting, nesting);
+ WRITE_ONCE(t->trc_reader_nesting, 0);
if (nq && atomic_dec_and_test(&trc_n_readers_need_end))
irq_work_queue(&rcu_tasks_trace_iw);
}
WARN_ON_ONCE(READ_ONCE(t->trc_reader_nesting));
WRITE_ONCE(t->trc_reader_nesting, 0);
if (WARN_ON_ONCE(READ_ONCE(t->trc_reader_special.b.need_qs)))
- rcu_read_unlock_trace_special(t, 0);
+ rcu_read_unlock_trace_special(t);
}
/**