linux-kernel - Re: [RFC][PATCH 0/5] tracing: Add new file system tracefs

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: <20150122124920.GD25645@htj.dyndns.org>
Date:	Thu, 22 Jan 2015 07:49:20 -0500
From:	Tejun Heo <tj@...nel.org>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Al Viro <viro@...IV.linux.org.uk>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [RFC][PATCH 0/5] tracing: Add new file system tracefs

On Wed, Jan 21, 2015 at 11:35:53PM -0500, Steven Rostedt wrote:
> On Thu, 22 Jan 2015 04:23:30 +0000
> Al Viro <viro@...IV.linux.org.uk> wrote:
> 
> > I would recommend against that - kernfs is overburdened by their need
> > to accomodate cgroup weirdness.  IMO it's not a good model for
> > anything, other than an anti-hard-drugs poster ("don't shoot that
> > shit, or you might end up hallucinating _this_").
> 
> OK, I'm not the only one that thought kernfs seemed to go all over the
> place. I guess I now know why. It was more of a hook for cgroups. I can

Again, not true at all.

> understand why cgroups needed it, as I found that creating files from a
> mkdir and removing them with rmdir causes some pain in vfs with
> handling of locking. As that's what I'm working on overcoming now.
> 
> But I think I solved my issues (testing it now), and hopefully by
> tomorrow, I'll have a V2 out.

I'd strongly recomment just using kernfs.  If you find something wrong
with it, let's fix it, please.

Thanks.

-- 
tejun
--
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/