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:	Fri, 2 Dec 2011 08:51:26 -0500
From:	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Greg KH <greg@...ah.com>, devel@...verdev.osuosl.org,
	lttng-dev@...ts.lttng.org, Ingo Molnar <mingo@...e.hu>,
	linux-kernel@...r.kernel.org, Darren Hart <darren@...art.com>
Subject: Re: [PATCH 09/11] sched: export task_prio to GPL modules

* Peter Zijlstra (peterz@...radead.org) wrote:
> On Thu, 2011-12-01 at 17:36 -0500, Mathieu Desnoyers wrote:
> > So what you are saying is that it is fine to export task_prio to
> > _userspace_, thus making it part of the ABI, but it's not OK to export
> > it to GPL modules ? 
> 
> that's a SCHED_DEBUG proc file.

Fair point. You'll then notice that /proc/<pid>/stat (18th field)
exports it too, and it's not under SCHED_DEBUG:

ok:/proc/20# cat stat
20 (migration/5) S 2 0 0 0 -1 2216722496 0 0 0 0 0 0 0 0 -100 0 1 0 70 0
0 18446744073709551615 0 0 0 0 0 0 0 2147483647 0 18446744071579371389 0
0 17 5 99 1 0 0 0

(see -100 above)

as defined in Documentation/filesystems/proc.txt:

"Table 1-4: Contents of the stat files (as of 2.6.30-rc7)
[...]
priority      priority level"

Thanks,

Mathieu

-- 
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com
--
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/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ