linux-kernel - Re: [PATCH 3/4] KVM-S390: Less function calls in kvm_s390_import_bp

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Message-Id: <20160822145826.386328d8@thinkpad-w530>
Date:   Mon, 22 Aug 2016 14:58:26 +0200
From:   David Hildenbrand <dahi@...ux.vnet.ibm.com>
To:     SF Markus Elfring <elfring@...rs.sourceforge.net>
Cc:     kvm@...r.kernel.org, linux-s390@...r.kernel.org,
        Christian Bornträger <borntraeger@...ibm.com>,
        Cornelia Huck <cornelia.huck@...ibm.com>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Radim Krčmář <rkrcmar@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org,
        Julia Lawall <julia.lawall@...6.fr>
Subject: Re: [PATCH 3/4] KVM-S390: Less function calls in
 kvm_s390_import_bp_data() after error detection

> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Wed, 17 Aug 2016 19:25:50 +0200
> 
> The kfree() function was called in a few cases by the
> kvm_s390_import_bp_data() function during error handling
> even if a passed variable contained a null pointer.
> 
> Adjust jump targets according to the Linux coding style convention.
> 
> Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
> ---
>  arch/s390/kvm/guestdbg.c | 14 ++++++++------
>  1 file changed, 8 insertions(+), 6 deletions(-)
> 

Nack, we don't need micro optimization for error handling code. Adding more
jump labels is never a good idea, it just increases complexity.

David