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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20170117152618.GD5680@worktop>
Date:   Tue, 17 Jan 2017 16:26:18 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Vikas Shivappa <vikas.shivappa@...ux.intel.com>
Cc:     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 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.