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Date:   Wed, 16 Oct 2019 09:39:06 +0200
From:   Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To:     Guo Ren <guoren@kernel.org>
Cc:     Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        tglx@linutronix.de
Subject: Re: [PATCH 06/34] csky: Use CONFIG_PREEMPTION
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On 2019-10-16 07:29:34 [+0800], Guo Ren wrote:
> Could CONFIG_PREEMPT_RT be supported in csky ? Any arch backend porting ?

It could. HIGH_RES_TIMERS is useful and IRQ_FORCED_THREADING is
required. You already have PREEMPT(ION) which is good. Then you would
have to try and my guess would be that some of spinlock_t vs
raw_spinlock_t could require changes but we should have lockdep support
for that which would make things easier.

Sebastian