linux-kernel - Re: [RFC PATCH 09/14] sunrpc: add basic support for workqueue-based services

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Date:	Mon, 8 Dec 2014 15:49:21 -0500
From:	Jeff Layton <jeff.layton@...marydata.com>
To:	"J. Bruce Fields" <bfields@...ldses.org>
Cc:	linux-nfs@...r.kernel.org, linux-kernel@...r.kernel.org,
	Tejun Heo <tj@...nel.org>, Al Viro <viro@...iv.linux.org.uk>
Subject: Re: [RFC PATCH 09/14] sunrpc: add basic support for workqueue-based
 services

On Mon, 8 Dec 2014 15:47:09 -0500
"J. Bruce Fields" <bfields@...ldses.org> wrote:

> On Tue, Dec 02, 2014 at 01:24:18PM -0500, Jeff Layton wrote:
> > diff --git a/net/sunrpc/Kconfig b/net/sunrpc/Kconfig
> > index fb78117b896c..08e01949bdc5 100644
> > --- a/net/sunrpc/Kconfig
> > +++ b/net/sunrpc/Kconfig
> > @@ -71,3 +71,13 @@ config SUNRPC_XPRT_RDMA_SERVER
> >  	  choose M here: the module will be called svcrdma.
> >  
> >  	  If unsure, say N.
> > +
> > +config SUNRPC_SVC_WORKQUEUE
> > +	bool "Support for workqueue-based SUNRPC services"
> > +	depends on SUNRPC
> > +	default	n
> > +	help
> > +	  Traditional SUNRPC services have required a dedicated thread
> > +	  to handle incoming requests. This option enables support for
> > +	  queueing incoming reqests to a workqueue instead, eliminating
> > +	  the need for a dedicated thread pool.
> 
> Minor point, but: If people don't want this, they can turn it off at
> runtime.  It's annoying to test all the possible combination of build
> options, and this doesn't seem likely to let people e.g. build a
> significantly smaller kernel, so I wouldn't bother.
> 
> --b.

Ok, fair enough. I added the config option since this was experimental,
but if we keep it runtime-switchable then I think you're probably right
and there's no need.

-- 
Jeff Layton <jlayton@...marydata.com>
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