linux-kernel - Re: [PATCH 1/3] padata: separate serial and parallel cpumasks

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Message-ID: <20100706074641.GS10072@secunet.com>
Date:	Tue, 6 Jul 2010 09:46:41 +0200
From:	Steffen Klassert <steffen.klassert@...unet.com>
To:	Dan Kruchinin <dkruchinin@....org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Herbert Xu <herbert@...dor.apana.org.au>
Subject: Re: [PATCH 1/3] padata: separate serial and parallel cpumasks

On Tue, Jul 06, 2010 at 11:40:11AM +0400, Dan Kruchinin wrote:
> >> >
> >>
> >> I think we can use RCU anyway. For instance we could use a structure
> >>
> >> struct pcrypt_cpumask {
> >>       cpumask_var_t           pmask;
> >>       cpumask_var_t           smask;
> >> };
> >>
> >> and add a pointer to a structure of that type to the instance context.
> >> Then we could use this pointer for RCU and replace the whole structure
> >> if a cpumask changes.
> 
> But is pcrypt interested pmask? If it isn't, pmask field will be unused.
> 

It's probaply not, in this case the struct could look like

struct pcrypt_cpumask {
	cpumask_var_t           smask;
};
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