linux-kernel - Re: [PATCH RFT v2] x86: move cacheinfo sysfs to generic cacheinfo infrastructure

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Date:	Tue, 3 Mar 2015 13:53:02 -0500
From:	Tejun Heo <tj@...nel.org>
To:	Borislav Petkov <bp@...e.de>
Cc:	Andre Przywara <andre.przywara@....com>,
	Sudeep Holla <sudeep.holla@....com>,
	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org
Subject: Re: [PATCH RFT v2] x86: move cacheinfo sysfs to generic cacheinfo
 infrastructure

Hello, Borislav.

On Tue, Mar 03, 2015 at 07:45:27PM +0100, Borislav Petkov wrote:
> Tejun, we have this change in user-visible masks formatting in sysfs
> after your bitmaps printing changes:
> 
> -cpu5/cache/index3/shared_cpu_map:00000000,0000003f
> +cpu5/cache/index3/shared_cpu_map:3f
> 
> What's the rationale on userspace parsing bitmaps in sysfs, we don't
> care?

We were alternating between the two forms depending on
CONFIG_CPUMASK_OFFSTACK before.  Now we're always sticking to the
shorter format.  Please see 513e3d2d11c9 ("cpumask: always use
nr_cpu_ids in formatting and parsing functions").

Thanks.

-- 
tejun
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