linux-kernel - Re: [PATCH] perf test: Add bpf-output event

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]

Date:	Thu, 19 Nov 2015 09:37:07 +0800
From:	"Wangnan (F)" <wangnan0@...wei.com>
To:	Alexei Starovoitov <alexei.starovoitov@...il.com>,
	"Arnaldo Carvalho de Melo" <acme@...nel.org>,
	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
CC:	Jiri Olsa <jolsa@...hat.com>, <ast@...nel.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] perf test: Add bpf-output event



On 2015/11/19 7:14, Alexei Starovoitov wrote:
> On Wed, Nov 18, 2015 at 05:50:39PM -0300, Arnaldo Carvalho de Melo wrote:
>> Em Wed, Nov 18, 2015 at 11:26:04AM -0800, Sukadev Bhattiprolu escreveu:
>>> >From 8f71d55dd3e27e6ca2138e3ed6dfeceb1c00a426 Mon Sep 17 00:00:00 2001
>>> From: Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
>>> Date: Wed, 18 Nov 2015 19:06:08 -0500
>>> Subject: [PATCH] perf test: Add bpf-output event
>>>
>>> The kernel has added support for 'PERF_COUNT_SW_BPF_OUTPUT' but that is
>>> missing from the perf tool. Among other things, results in the 'roundtrip
>>> evsel->name check' test case of 'perf test' failing on Powerpc.
>> Next time can you please state if this is for this merge window or for
>> the next?
>>
>> Will apply it for perf/core, for the next merge window.
> wait a sec, I believe Wang has posted an RFC a month ago that adds support
> for this properly instead of simply shutting up the error.

Yes. Please have a look at

http://lkml.kernel.org/g/1446029705-199659-3-git-send-email-wangnan0@huawei.com

and patch 23/31 - 31/31 in

http://lkml.kernel.org/g/1444826502-49291-1-git-send-email-wangnan0@huawei.com

We are working on a solution which truly utilizes bpf-output, including
filling event array and extracting BPF output through perf data to CTF
format. Now they are separated in multiple patchset, and I'd like to
resend them to Arnaldo in this week.

Thank you.

[SNIP]

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/