linux-kernel - Re: [RFC PATCH] MIPS: Oprofile: Drop support

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: <20180504102600.GD4493@rric.localdomain>
Date:   Fri, 4 May 2018 12:26:01 +0200
From:   Robert Richter <rric@...nel.org>
To:     Matt Redfearn <matt.redfearn@...s.com>
Cc:     James Hogan <jhogan@...nel.org>,
        Ralf Baechle <ralf@...ux-mips.org>, linux-mips@...ux-mips.org,
        Huacai Chen <chenhc@...ote.com>, linux-kernel@...r.kernel.org,
        Jiaxun Yang <jiaxun.yang@...goat.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        oprofile-list@...ts.sf.net
Subject: Re: [RFC PATCH] MIPS: Oprofile: Drop support

On 04.05.18 10:54:32, Matt Redfearn wrote:
> perf is available for MIPS and supports many more CPU types than oprofile.
> oprofile userspace seemingly has been broken since 1.0.0 - removing oprofile
> support from the MIPS kernel would not break it more thatn it already is,

What do you mean with "oprofile is broken"? It looks like you modified
Kconfig to enable oprofile and perf in parallel, which is not intended
to work. Have you tried a kernel with oprofile disabled and perf
enabled?

As said, oprofile version 0.9.x is still available for cpus that do
not support perf. What is the breakage?

Thanks,

-Robert