linux-kernel - Re: [BELATED CORE TOPIC] context tracking / nohz / RCU state

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Message-ID: <CAMAWPa9c6kBdJC3n5q=fCD6gEPhGgFCqN_7TS-_-WLjo5_seRA@mail.gmail.com>
Date:	Tue, 11 Aug 2015 14:32:16 -0700
From:	Kevin Hilman <khilman@...nel.org>
To:	Andy Lutomirski <luto@...capital.net>
Cc:	"ksummit-discuss@...ts.linuxfoundation.org" 
	<ksummit-discuss@...ts.linuxfoundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Paul McKenney <paulmck@...ux.vnet.ibm.com>,
	Christoph Lameter <cl@...ux.com>,
	Frédéric Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Chris Metcalf <cmetcalf@...hip.com>,
	Rik van Riel <riel@...hat.com>
Subject: Re: [BELATED CORE TOPIC] context tracking / nohz / RCU state

On Tue, Aug 11, 2015 at 10:49 AM, Andy Lutomirski <luto@...capital.net> wrote:
> This is a bit late, but here goes anyway.
>
> Having played with the x86 context tracking hooks for awhile, I think
> it would be nice if core code that needs to be aware of CPU context
> (kernel, user, idle, guest, etc) could come up with single,
> comprehensible, easily validated set of hooks that arch code is
> supposed to call.

Having worked on both the arm and arm64 implementations of context
tracking, I'm interested in this as well.

Kevin
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