On Mon, Apr 25, 2022 at 10:56 PM Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:
>
> On Sat, 23 Apr 2022 18:28:44 +0800
> Patrick Wang <patrick.wang.shcn@xxxxxxxxx> wrote:
>
> > Signed-off-by: Patrick Wang <patrick.wang.shcn@xxxxxxxxx>
> > ---
> > v1->v2:
> > - Modify log message.
> >
> > kernel/rcu/tree_plugin.h | 6 +++---
> > 1 file changed, 3 insertions(+), 3 deletions(-)
> >
> > diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
> > index c8ba0fe17267..971bb6a00ede 100644
> > --- a/kernel/rcu/tree_plugin.h
> > +++ b/kernel/rcu/tree_plugin.h
> > @@ -460,7 +460,7 @@ static bool rcu_preempt_has_tasks(struct rcu_node *rnp)
> > * be quite short, for example, in the case of the call from
> > * rcu_read_unlock_special().
> > */
> > -static void
> > +notrace static void
>
> I'm fine with the change, but to be consistent with the rest of the kernel,
> static needs to come before notrace.
>
> Either:
>
> static notrace void
>
> or even (some places have):
>
> static void notrace
>
> but "static" should always be first.
>
Thank you for the detailed advice. I will move "notrace" to behind "static".
Thanks,
Patrick
>
>
> > rcu_preempt_deferred_qs_irqrestore(struct task_struct *t, unsigned long flags)
> > {
> > bool empty_exp;
> > @@ -581,7 +581,7 @@ rcu_preempt_deferred_qs_irqrestore(struct task_struct *t, unsigned long flags)
> > * is disabled. This function cannot be expected to understand these
> > * nuances, so the caller must handle them.
> > */
> > -static bool rcu_preempt_need_deferred_qs(struct task_struct *t)
> > +notrace static bool rcu_preempt_need_deferred_qs(struct task_struct *t)
> > {
> > return (__this_cpu_read(rcu_data.cpu_no_qs.b.exp) ||
> > READ_ONCE(t->rcu_read_unlock_special.s)) &&
> > @@ -595,7 +595,7 @@ static bool rcu_preempt_need_deferred_qs(struct task_struct *t)
> > * evaluate safety in terms of interrupt, softirq, and preemption
> > * disabling.
> > */
> > -static void rcu_preempt_deferred_qs(struct task_struct *t)
> > +notrace static void rcu_preempt_deferred_qs(struct task_struct *t)
> > {
> > unsigned long flags;
> >
>
