linux-kernel - Re: [PATCH 1/3] context_tracking: remove duplicate enabled check

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Message-ID: <CALCETrU_8-HBQk0Lf0sp6CoP3fNJV90Gd1gpaou-p64KmNB+GA@mail.gmail.com>
Date:	Tue, 27 Oct 2015 22:19:40 -0700
From:	Andy Lutomirski <luto@...capital.net>
To:	Paolo Bonzini <pbonzini@...hat.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	kvm list <kvm@...r.kernel.org>,
	Andy Lutomirski <luto@...nel.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Rik van Riel <riel@...hat.com>,
	Paul McKenney <paulmck@...ux.vnet.ibm.com>
Subject: Re: [PATCH 1/3] context_tracking: remove duplicate enabled check

On Tue, Oct 27, 2015 at 6:39 PM, Paolo Bonzini <pbonzini@...hat.com> wrote:
> All calls to context_tracking_enter and context_tracking_exit
> are already checking context_tracking_is_enabled, except the
> context_tracking_user_enter and context_tracking_user_exit
> functions left in for the benefit of assembly calls.
>
> Pull the check up to those functions, by making them simple
> wrappers around the user_enter and user_exit inline functions.

This makes my brain hurt.  Assuming that this survives a boot with
CONFIG_CONTEXT_TRACKING_FORCE=y and CONFIG_PROVE_LOCKING=y (with the
implied CONFIG_PROVE_RCU), then:

Acked-by: Andy Lutomirski <luto@...nel.org>
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