linux-kernel - Re: [PATCH] force_quiescent_state: factor out duplicated code

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Date:	Mon, 11 Sep 2006 01:13:44 +0400
From:	Oleg Nesterov <oleg@...sign.ru>
To:	Dipankar Sarma <dipankar@...ibm.com>
Cc:	"Paul E. McKenney" <paulmck@...ibm.com>,
	Srivatsa Vaddagiri <vatsa@...ibm.com>,
	Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] force_quiescent_state: factor out duplicated code

On 09/11, Dipankar Sarma wrote:
>
> On Sun, Sep 10, 2006 at 08:18:10PM +0400, Oleg Nesterov wrote:
> > On top of rcu-simplify-improve-batch-tuning.patch
> > 
> > Cleanup. Move '#ifdef CONFIG_SMP' check and rdp->bhlimit setting
> > into force_quiescent_state().
> 
> 
> Pushing the rdp->blimit setting into force_quiescent_state is fine,
> but I see no need to insert #ifdef CONFIG_SMP into a routine.

Otherwise we need to push the rdp->blimit setting into both versions
of force_quiescent_state(), for CONFIG_SMP and !CONFIG_SMP.

> Let us continue to have separate versions of force_quiescent_state()
> for CONFIG_SMP and !CONFIG_SMP. It looks cleaner with #ifdefs inserted
> in between.

I personally think exactly opposite :)

Ok, let's forget about this patch, it was only cleanup.

Oleg.

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