linux-kernel - Re: [PATCH v3] s390/spinlock: Provide vcpu_is

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Message-Id: <20161019085018.GE4077@osiris>
Date:   Wed, 19 Oct 2016 10:50:18 +0200
From:   Heiko Carstens <heiko.carstens@...ibm.com>
To:     Christian Borntraeger <borntraeger@...ibm.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        Pan Xinhui <xinhui.pan@...ux.vnet.ibm.com>,
        linux-kernel@...r.kernel.org,
        virtualization@...ts.linux-foundation.org,
        linux-s390@...r.kernel.org, kvm@...r.kernel.org,
        xen-devel-request@...ts.xenproject.org, benh@...nel.crashing.org,
        paulus@...ba.org, mpe@...erman.id.au, mingo@...hat.com,
        paulmck@...ux.vnet.ibm.com, will.deacon@....com,
        kernellwp@...il.com, jgross@...e.com, pbonzini@...hat.com,
        bsingharora@...il.com
Subject: Re: [PATCH v3] s390/spinlock: Provide vcpu_is_preempted

On Wed, Oct 19, 2016 at 10:42:04AM +0200, Christian Borntraeger wrote:
> this implements the s390 backend for commit
> "kernel/sched: introduce vcpu preempted check interface"
> by reworking the existing smp_vcpu_scheduled into
> arch_vcpu_is_preempted. We can then also get rid of the
> local cpu_is_preempted function by moving the
> CIF_ENABLED_WAIT test into arch_vcpu_is_preempted.
> 
> Signed-off-by: Christian Borntraeger <borntraeger@...ibm.com>
> ---
>  arch/s390/include/asm/spinlock.h |  8 ++++++++
>  arch/s390/kernel/smp.c           |  9 +++++++--
>  arch/s390/lib/spinlock.c         | 25 ++++++++-----------------
>  3 files changed, 23 insertions(+), 19 deletions(-)

Acked-by: Heiko Carstens <heiko.carstens@...ibm.com>