linux-kernel - Re: [PATCH 12/15] libnvdimm: enable iostat

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Message-ID: <20150619083410.GA2885@lst.de>
Date:	Fri, 19 Jun 2015 10:34:10 +0200
From:	Christoph Hellwig <hch@....de>
To:	Dan Williams <dan.j.williams@...el.com>
Cc:	axboe@...nel.dk, linux-nvdimm@...ts.01.org, boaz@...xistor.com,
	toshi.kani@...com, Vishal Verma <vishal.l.verma@...ux.intel.com>,
	linux-kernel@...r.kernel.org, hch@....de,
	linux-acpi@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	mingo@...nel.org
Subject: Re: [PATCH 12/15] libnvdimm: enable iostat

On Wed, Jun 17, 2015 at 07:55:51PM -0400, Dan Williams wrote:
> This is disabled by default as the overhead is prohibitive, but if the
> user takes the action to turn it on we'll oblige.

If you care about users a compile time selection doesn't make sense,
why not always build it but require an opt-in?
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