Messages in this thread | | | Date | Tue, 16 May 2023 14:05:55 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH v9] kernel/fork: beware of __put_task_struct calling context |
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On Tue, 16 May 2023 20:24:04 +0100 Matthew Wilcox <willy@infradead.org> wrote:
> On Tue, May 16, 2023 at 04:14:41PM -0300, Wander Lairson Costa wrote: > > +void __put_task_struct_rcu_cb(struct rcu_head *rhp) > > +{ > > + struct task_struct *task = container_of(rhp, struct task_struct, rcu); > > + > > + __put_task_struct(task); > > +} > > +EXPORT_SYMBOL_GPL(__put_task_struct_rcu_cb); > > Why does this need to be exported when its only caller is within the > main kernel and cannot possibly be built as a module?
It's referenced by inlined put_task_struct(), which is called from all over.
However I believe the above definition could be inside #ifdef CONFIG_PREEMPT_RT, to save a scrap of resources?
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