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Date: Sun, 17 Sep 2006 23:40:00 +0200 From: Ingo Molnar <mingo@...e.hu> To: Roman Zippel <zippel@...ux-m68k.org> Cc: Nick Piggin <nickpiggin@...oo.com.au>, Thomas Gleixner <tglx@...utronix.de>, karim@...rsys.com, Andrew Morton <akpm@...l.org>, Paul Mundt <lethal@...ux-sh.org>, Jes Sorensen <jes@....com>, Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>, linux-kernel@...r.kernel.org, Christoph Hellwig <hch@...radead.org>, Ingo Molnar <mingo@...hat.com>, Greg Kroah-Hartman <gregkh@...e.de>, Tom Zanussi <zanussi@...ibm.com>, ltt-dev@...fik.org, Michel Dagenais <michel.dagenais@...ymtl.ca> Subject: Re: [PATCH 0/11] LTTng-core (basic tracing infrastructure) 0.5.108 * Roman Zippel <zippel@...ux-m68k.org> wrote: > > As an aside, there are quite a number of different types of tracing > > things (mostly static, compile out) in the kernel. Everything from > > blktrace to various userspace notifiers to lots of /proc/stuff could > > be considered a type of static event tracing. I don't know what my > > point is other than all these big, disjoint frameworks trying to be > > pushed into the kernel. Are there any plans for working some things > > together, or is that somebody else's problem? > > All the controversy around static tracing in general and LTT in > specific has prevented this so far... BLKTRACE is a special-purpose tracing facility limited to one subsystem and written and maintained by the /same/ person (Jens) who maintains that subsystem. He maintains the subsystem, the tracer and the userspace tool that extracts the tracer data. LTT on the other hand is a static tracer that affects _all_ subsystems. That is a very different situation from a maintainance overhead POV, and i believe you must know that. your suggestion that this controversy has prevented consolidation in this area is baseless and misleading, please correct or retract it. Ingo - 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/
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