linux-kernel - Re: [patch for-3.14] mm, mempolicy: fix mempolicy printing in numa

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Message-ID: <20140127105011.GB11314@laptop.programming.kicks-ass.net>
Date:	Mon, 27 Jan 2014 11:50:11 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Mel Gorman <mgorman@...e.de>, Ingo Molnar <mingo@...nel.org>,
	Rik van Riel <riel@...hat.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: Re: [patch for-3.14] mm, mempolicy: fix mempolicy printing in
 numa_maps

On Sat, Jan 25, 2014 at 07:12:35PM -0800, David Rientjes wrote:
> As a result of commit 5606e3877ad8 ("mm: numa: Migrate on reference 
> policy"), /proc/<pid>/numa_maps prints the mempolicy for any <pid> as 
> "prefer:N" for the local node, N, of the process reading the file.
> 
> This should only be printed when the mempolicy of <pid> is MPOL_PREFERRED 
> for node N.
> 
> If the process is actually only using the default mempolicy for local node 
> allocation, make sure "default" is printed as expected.

Should we also consider printing the MOF and MORON states so we get a
better view of what the actual policy is?


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