rcu: Irq nesting is always 0 on rcu_enter_idle_common

Because tasks don't nest, the ->dyntick_nesting must always be zero upon entry to rcu_idle_enter_common(). Therefore, pass "0" rather than the counter itself.

Frederic Weisbecker committed 14 years ago

Commit facc4e11 parent b6fc6021 file · +2 −3Browse files

Showing the changes to kernel/rcutree.c (1 of 1 file). Show all

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kernel/rcutree.c+2−3

@@ -350,12 +350,11 @@ static int rcu_implicit_offline_qs(struct rcu_data *rdp) · 349 unmodified lines
350	350	*/
351	351	static void rcu_idle_enter_common(struct rcu_dynticks *rdtp, long long oldval)
352	352	{
353		− trace_rcu_dyntick("Start", oldval, rdtp->dynticks_nesting);
	353	+ trace_rcu_dyntick("Start", oldval, 0);
354	354	if (!is_idle_task(current)) {
355	355	struct task_struct *idle = idle_task(smp_processor_id());
356	356
357		− trace_rcu_dyntick("Error on entry: not idle task",
358		− oldval, rdtp->dynticks_nesting);
	357	+ trace_rcu_dyntick("Error on entry: not idle task", oldval, 0);
359	358	ftrace_dump(DUMP_ALL);
360	359	WARN_ONCE(1, "Current pid: %d comm: %s / Idle pid: %d comm: %s",
361	360	current->pid, current->comm,