From: fche@redhat.com (Frank Ch. Eigler)
To: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>,
"Randy.Dunlap" <rdunlap@xenotime.net>,
penberg@cs.helsinki.fi, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, mpm@selenic.com, tglx@linutronix.de,
rostedt@goodmis.org, cl@linux-foundation.org, tzanussi@gmail.com
Subject: Re: [PATCH 1/5] Revert "kmemtrace: fix printk format warnings"
Date: Tue, 19 Aug 2008 14:47:16 -0400 [thread overview]
Message-ID: <y0md4k4zvt7.fsf@ton.toronto.redhat.com> (raw)
In-Reply-To: <20080819181652.GA29757@Krystal> (Mathieu Desnoyers's message of "Tue, 19 Aug 2008 14:16:53 -0400")
Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> writes:
> [...]
> Is this kmemtrace marker meant to be exposed to userspace ?
> I suspect not.
> [...]
> Tracepoints = in-kernel tracing API.
> Markers = Data-formatting tracing API, meant to export the data either
> to user-space in text or binary format.
FWIW, that was certainly not the intent of markers. It was to try to
satisfy both sorts of uses with relative type-safety and a minimum of
code. Tracepoints may be nice if one needs somewhat (how much?) more
performance, and is willing to burden someone else with the necessary
extra code (such as tracepoint-to-marker conversion modules) to expose
the same data to "userspace" tools like lttng/systemtap.
- FChE
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next prev parent reply other threads:[~2008-08-19 18:47 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-19 17:43 Eduard - Gabriel Munteanu
2008-08-19 17:43 ` [PATCH 2/5] kmemtrace: Better alternative to " Eduard - Gabriel Munteanu
2008-08-19 17:43 ` [PATCH 3/5] SLUB: Replace __builtin_return_address(0) with _RET_IP_ Eduard - Gabriel Munteanu
2008-08-19 17:43 ` [PATCH 4/5] kmemtrace: SLUB hooks Eduard - Gabriel Munteanu
2008-08-19 17:43 ` [PATCH 5/5] kmemtrace: Fix 2 typos in documentation Eduard - Gabriel Munteanu
2008-08-19 19:10 ` Pekka Enberg
2008-08-19 19:10 ` [PATCH 4/5] kmemtrace: SLUB hooks Pekka Enberg
2008-08-19 18:14 ` [PATCH 3/5] SLUB: Replace __builtin_return_address(0) with _RET_IP_ Christoph Lameter
2008-08-19 18:24 ` Eduard - Gabriel Munteanu
2008-08-19 18:56 ` Christoph Lameter
2008-08-19 18:59 ` Pekka Enberg
2008-08-19 19:05 ` Eduard - Gabriel Munteanu
2008-08-19 19:09 ` Pekka Enberg
2008-08-19 19:09 ` Pekka Enberg
2008-08-19 20:17 ` Christoph Lameter
2008-08-19 20:16 ` Pekka Enberg
2008-08-19 20:23 ` Christoph Lameter
2008-08-19 20:47 ` Pekka Enberg
2008-08-19 18:50 ` Pekka J Enberg
2008-08-19 19:24 ` [PATCH 2/5] kmemtrace: Better alternative to "kmemtrace: fix printk format warnings" Pekka Enberg
2008-08-19 17:51 ` [PATCH 1/5] Revert " Randy.Dunlap
2008-08-19 17:54 ` Eduard - Gabriel Munteanu
2008-08-19 18:16 ` Mathieu Desnoyers
2008-08-19 18:32 ` Eduard - Gabriel Munteanu
2008-08-19 19:25 ` Pekka Enberg
2008-08-19 20:23 ` Mathieu Desnoyers
2008-08-19 18:47 ` Frank Ch. Eigler [this message]
2008-08-19 19:32 ` Randy.Dunlap
2008-08-19 21:37 ` Eduard - Gabriel Munteanu
2008-08-19 19:27 ` Pekka Enberg
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