linux-kernel - Re: [RFC][PATCH] tracing: Remove useless 4 bytes of padding from every 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]

Message-ID: <4FB401B2.1010906@linux.intel.com>
Date:	Wed, 16 May 2012 12:36:18 -0700
From:	Arjan van de Ven <arjan@...ux.intel.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
CC:	Steven Rostedt <rostedt@...dmis.org>,
	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
	Frederic Weisbecker <fweisbec@...il.com>,
	David Sharp <dsharp@...gle.com>,
	Vaibhav Nagarnaik <vnagarnaik@...gle.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [RFC][PATCH] tracing: Remove useless 4 bytes of padding from
 every event

On 5/16/2012 12:33 PM, Linus Torvalds wrote:
> On Wed, May 16, 2012 at 6:44 AM, Steven Rostedt <rostedt@...dmis.org> wrote:
>>
>> But this change will break PowerTop v1. Thus my question is, how long do
>> we need to keep this wasted space in the ring buffers to satisfy an out
>> of date tool?
> 
> The wasted space seems of limited importance.
> 
> More important is to check which distros have the new powertop.
> 
> F16 and F17 seem to have powertop-1.98, which I assume is the new
> world order already. But maybe I assume incorrectly.

this is the one that will break

> 
> F14 (which I personally still use, since it doesn't have gnome3) is 1.13.

this one is fine, it does not use perf events at all.

--
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/