linux-kernel - Re: [PATCH cgroup/for-4.15] sched/cputime: Add dummy cputime_adjust() implementation for CONFIG_VIRT_CPU_ACCOUNTING

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Date:   Tue, 26 Sep 2017 11:10:03 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Tejun Heo <tj@...nel.org>
Cc:     lizefan@...wei.com, hannes@...xchg.org, mingo@...hat.com,
        longman@...hat.com, cgroups@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-team@...com, pjt@...gle.com,
        luto@...capital.net, efault@....de, torvalds@...ux-foundation.org,
        guro@...com
Subject: Re: [PATCH cgroup/for-4.15] sched/cputime: Add dummy
 cputime_adjust() implementation for CONFIG_VIRT_CPU_ACCOUNTING_NATIVE

On Mon, Sep 25, 2017 at 02:34:21PM -0700, Tejun Heo wrote:
> Hello,
> 
> Another follow-up fix.  I missed a dummy implementation leading to
> bulid failure on s390.  Because the bug and fix are trivial, I
> directly applied the patch to cgroup/for-4.15.  Please let me know if
> it should be routed differently.
> 
> Thanks.
> ------ 8< ------
> From 8157a7faf94135386bf04b1cf94e6efd3fb94702 Mon Sep 17 00:00:00 2001
> From: Tejun Heo <tj@...nel.org>
> Date: Mon, 25 Sep 2017 14:27:54 -0700
> MIME-Version: 1.0
> Content-Type: text/plain; charset=UTF-8
> Content-Transfer-Encoding: 8bit
> 
> cfb766da54d9 ("sched/cputime: Expose cputime_adjust()") made
> cputime_adjust() public for cgroup basic cpu stat support; however,
> the commit forgot to add a dummy implementaiton for
> CONFIG_VIRT_CPU_ACCOUNTING_NATIVE leading to compiler errors on some
> s390 configurations.
> 
> Fix it by adding the missing dummy implementation.
> 
> Reported-by: “kbuild-all@...org” <kbuild-all@...org>
> Fixes: cfb766da54d9 ("sched/cputime: Expose cputime_adjust()")
> Signed-off-by: Tejun Heo <tj@...nel.org>

Seems fine,

Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>