Re: [PATCH 1/1] rcu/tree: Drop the lock before entering to page allocator

[Sebastian Andrzej Siewior]

On 2020-07-15 21:02:43 [+0200], Uladzislau Rezki wrote:
> 
> <snip>
>     spin_lock();
>     __get_free_page(GFP_NOWAIT | __GFP_NOWARN);
>     spin_unlock();
> <snip>
> 
> Also, please note we do it for regular kernel.

ach right okay then.

> >
> > What happened to the part where I asked for a spinlock_t?
> > 
> What do you mean?

Please drop that raw_spinlock_t for the kfree_rcu() based locking and
use just a plain spinlock_t for the locking. Then you can keep the same
code flow for RT and !RT without any special cases and everything.

> --
> Vlad Rezki

Sebastian