linux-kernel - Re: [PATCH 3/4] x86, mce: Add persistent MCE 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:	Tue, 3 May 2011 10:27:42 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Borislav Petkov <bp@...64.org>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Tony Luck <tony.luck@...el.com>,
	Mauro Carvalho Chehab <mchehab@...hat.com>,
	EDAC devel <linux-edac@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	"Petkov, Borislav" <Borislav.Petkov@....com>
Subject: Re: [PATCH 3/4] x86, mce: Add persistent MCE event


* Borislav Petkov <bp@...64.org> wrote:

> I'm guessing that when we move those to /sysfs, this mechanism will have to 
> change too so it might make sense to move that functionality to persistent.c. 
> Let me see what I can do.

Yes, we really do not want to increase the debugfs mess. This looks like an 
implementational detail but from a tooling POV it's quite essential.

As a starting point check out Peter's patch from November 2010:

  [RFC][PATCH 8/8] perf: Sysfs events

  https://lkml.org/lkml/2010/11/17/489

That patch should still apply cleanly to the latest tree.

In the end we want all events (including regular hw events) to be easily 
available via sysfs enumeration. The goal is that ideally when you type 'perf 
list' it should only access /sys.

Thanks,

	Ingo
--
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/