Messages in this thread | | | Date | Tue, 19 Aug 2008 16:23:16 -0400 | From | Mathieu Desnoyers <> | Subject | Re: [PATCH 1/5] Revert "kmemtrace: fix printk format warnings" |
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* Pekka Enberg (penberg@cs.helsinki.fi) wrote: > Eduard - Gabriel Munteanu wrote: >> On Tue, Aug 19, 2008 at 02:16:53PM -0400, Mathieu Desnoyers wrote: >>> Question : >>> >>> Is this kmemtrace marker meant to be exposed to userspace ? >>> >>> I suspect not. In all case, not directly. I expect in-kernel probes to >>> be connected on these markers which will get the arguments they need, >>> and maybe access the inner data structures. Anyhow, tracepoints should >>> be used for that, not markers. You can later put markers in the probes >>> which are themselves connected to tracepoints. >>> >>> Tracepoints = in-kernel tracing API. >>> >>> Markers = Data-formatting tracing API, meant to export the data either >>> to user-space in text or binary format. >>> >>> See >>> >>> http://git.kernel.org/?p=linux/kernel/git/compudj/linux-2.6-lttng.git;a=shortlog >>> >>> tracepoint-related patches. >> I think we're ready to try tracepoints. Pekka, could you merge Mathieu's >> tracepoints or otherwise provide a branch where I could submit a >> tracepoint conversion patch for kmemtrace? > > Sorry, that's too much of a hassle for me. I'll happily take your > conversion patch once tracepoints hit mainline. Mathieu, are you aiming for > 2.6.28?
Probably. it's in -tip right now, and the new ftrace depends on it. So at least 2.6.28 yes.
Mathieu
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