linux-kernel - Re: [PATCH v2] ftrace: Add a C-state tracer to help power optimization

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] [day] [month] [year] [list]

Message-ID: <20081006095707.0c1b5a23@infradead.org>
Date:	Mon, 6 Oct 2008 09:57:07 -0700
From:	Arjan van de Ven <arjan@...radead.org>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Steven Rostedt <rostedt@...dmis.org>, mingo@...e.hu,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] ftrace: Add a C-state tracer to help power
 optimization

On Mon, 06 Oct 2008 18:52:39 +0200
Peter Zijlstra <a.p.zijlstra@...llo.nl> wrote:

> >  
> > 
> >  #endif /* _LINUX_FTRACE_H */
> 
> Why have the cstate_trace structure? If you just log start, stop you
> could compute the time delta from the trace time stamps, no?

there's 2 other fields I need than just the timestamp.
> 
> If you decide to keep the structure, perhaps declare it empty for !
> CONFIG_CSTATE_TRACER so as to not bloat stack usage when its not
> configured.

ok good point

> 


-- 
Arjan van de Ven 	Intel Open Source Technology Centre
For development, discussion and tips for power savings, 
visit http://www.lesswatts.org
--
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/