Messages in this thread | | | Date | Fri, 23 Oct 2009 11:38:40 +0200 | From | Frederic Weisbecker <> | Subject | Re: [RFC] tracefs |
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On Fri, Oct 23, 2009 at 07:32:37AM +0200, Ingo Molnar wrote: > > * Greg KH <greg@kroah.com> wrote: > > > Hi all, > > > > At LinuxCon this year, Steven and I talked about moving the debugfs > > usage in the tracing core to a stand-alone filesystem to give the > > ability to start to lock down the api so that people an count on what > > is going on in the tracing userspace interface. > > What we want to move out initially (and i talked to Steve and Frederic > about that a few weeks ago) is the event description bits - the format > stuff in /debug/tracing/events/ - but definitely not all the other, > rather messy and ad-hoc APIs. > > _No way_ do we want to tie down the pretty-printing ftrace details as an > ABI. We promised that when ftrace went upstream and all the details are > way too messy to be exposed in an ABI alike matter (and yes, consider > this a NAK Steve ;-). > > We want a _very_ careful exporting of certain pieces of information that > helps syscall-exposed perf events bits, and to improve the quality of > interfaces while we do that. > > Ingo
I guess the first bits that need to be exported are the TRACE_EVENT_ABI. But even before that, we need to ensure we have a final version of the trace events description.
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