linux-kernel - Re: [PATCH v4] ftrace: add a tracepoint for __raise_softirq

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: <alpine.DEB.2.00.0905140926010.30591@gandalf.stny.rr.com>
Date:	Thu, 14 May 2009 09:26:34 -0400 (EDT)
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
cc:	Xiao Guangrong <xiaoguangrong@...fujitsu.com>, mingo@...e.hu,
	linux-kernel@...r.kernel.org, fweisbec@...il.com,
	zhaolei@...fujitsu.com, laijs@...fujitsu.com,
	Li Zefan <lizf@...fujitsu.com>
Subject: Re: [PATCH v4] ftrace: add a tracepoint for
 __raise_softirq_irqoff()


On Thu, 14 May 2009, Mathieu Desnoyers wrote:
> > From: Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
> > 
> > This patch is modified from Mathieu Desnoyers' patch. The original patch
> > can be found here: 
> > 	http://marc.info/?l=linux-kernel&m=123791201816245&w=2
> > This tracepoint can trace the time stamp when softirq action is raised. 
> > 
> > Changelog for v1 -> v2: 
> > 1: Use TRACE_EVENT instead of DEFINE_TRACE
> > 2: Move the tracepoint from raise_softirq_irqoff() to
> >    __raise_softirq_irqoff()
> > 
> > Changelog for v2 -> v3: 
> > Move the definition of __raise_softifq_irqoff() to .c file when
> > CONFIG_TRACEPOINTS is enabled, to avoid recursive includes
> > 
> > Changelog for v3 -> v4: 
> > 1: Come back to v2, and use forward declarations to avoid
> >    recursive includes as Mathieu's suggestion
> > 2: Modifiy the tracepoint name
> > 3: Add comments for this tracepoint
> > 
> 
> This is a step in the right direction, but please see my email to Lai
> about the fact that this assumes correct and undocumented include
> dependencies in kernel/trace/events.c. Not explicitely stating the
> include dependencies is a build error waiting to happen.
> 
> Including interrupt.h under a ifdef would allow keeping track of
> TRACE_EVENT specific build dependencies neatly on a per header basis.

This is all moot, the events.c file no longer exists and as not an issue.

-- Steve

--
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/