Message-ID: <533DE12C.9030203@intel.com>
Date: Thu, 03 Apr 2014 15:31:08 -0700
From: Dave Hansen <dave.hansen@intel.com>
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To: Davidlohr Bueso <davidlohr@hp.com>, linux-mm@kvack.org
CC: linux-kernel@vger.kernel.org, Dave Jones <davej@redhat.com>,
        Sasha Levin <sasha.levin@oracle.com>,
        Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [RFC] mm,tracing: improve current situation
References: <1396561440.4661.33.camel@buesod1.americas.hpqcorp.net>
In-Reply-To: <1396561440.4661.33.camel@buesod1.americas.hpqcorp.net>
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Sender: linux-kernel-owner@vger.kernel.org

On 04/03/2014 02:44 PM, Davidlohr Bueso wrote:
> Now, on a more general scenario, I basically would like to know, 1) is
> this actually useful... I'm hoping that, if in fact something like this
> gets merged, it won't just sit there. 2) What other general data would
> be useful for debugging purposes? I'm happy to collect feedback and send
> out something we can all benefit from.

One thing that would be nice, specifically for the VM, would be to turn
all of the things that touch the /proc/vmstat counters
(count_vm_event(), etc...) in to tracepoints.

I started on it once, but ran in to some header dependency hell and gave
up before I got anything useful.
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