linux-kernel - Re: [PATCH 1/5] rcu,nohz: add state parameter to context_tracking_user

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Message-ID: <20150206172209.GC21905@lerouge>
Date:	Fri, 6 Feb 2015 18:22:16 +0100
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	riel@...hat.com
Cc:	kvm@...r.kernel.org, borntraeger@...ibm.com,
	linux-kernel@...r.kernel.org, mtosatti@...hat.com,
	mingo@...nel.orgm, ak@...ux.intel.com, oleg@...hat.com,
	masami.hiramatsu.pt@...achi.com, paulmck@...ux.vnet.ibm.com,
	lcapitulino@...hat.com, pbonzini@...hat.com
Subject: Re: [PATCH 1/5] rcu,nohz: add state parameter to
 context_tracking_user_enter/exit

On Thu, Feb 05, 2015 at 03:23:48PM -0500, riel@...hat.com wrote:
> From: Rik van Riel <riel@...hat.com>
> 
> Add the expected ctx_state as a parameter to context_tracking_user_enter
> and context_tracking_user_exit, allowing the same functions to not just
> track kernel <> user space switching, but also kernel <> guest transitions.
> 
> Signed-off-by: Rik van Riel <riel@...hat.com>

You should consider using guest_enter() and guest_exit() instead. These are
context tracking APIs too but specifically for guest.

These can be uninlined if needed.
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