linux-kernel - Re: [PATCH 05/12] x86/cqm,perf/core: Cgroup support prepare

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Date:   Tue, 17 Jan 2017 12:27:29 -0800 (PST)
From:   Shivappa Vikas <vikas.shivappa@...el.com>
To:     Peter Zijlstra <peterz@...radead.org>
cc:     Vikas Shivappa <vikas.shivappa@...ux.intel.com>,
        vikas.shivappa@...el.com, davidcc@...gle.com, eranian@...gle.com,
        linux-kernel@...r.kernel.org, x86@...nel.org, hpa@...or.com,
        tglx@...utronix.de, mingo@...nel.org, ravi.v.shankar@...el.com,
        tony.luck@...el.com, fenghua.yu@...el.com, andi.kleen@...el.com,
        h.peter.anvin@...el.com
Subject: Re: [PATCH 05/12] x86/cqm,perf/core: Cgroup support prepare



On Tue, 17 Jan 2017, Peter Zijlstra wrote:

> On Fri, Jan 06, 2017 at 01:59:58PM -0800, Vikas Shivappa wrote:
>> - Introduce event_terminate as event_destroy is called after cgrp is
>> disassociated from the event to support rmid handling of the cgroup.
>> This helps cqm clean up the cqm specific arch_info.
>
> You've not even tried to audit the code to see if you can either move
> the existing ->destroy() invocation or the perf_detach_cgroup() one,
> have you?
>
> Minimal APIs are a good thing, don't expand unless you absolutely have
> to.

yes , the perf_detach_cgroup can just do the job.. Thanks for pointing. Will 
fix.

>