Messages in this thread |  | | | Subject | Re: [RFC][PATCH 2/3] perf: Take a hot regs snapshot for trace events | | From | Steven Rostedt <> | | Date | Wed, 03 Mar 2010 12:45:55 -0500 |
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On Wed, 2010-03-03 at 18:16 +0100, Peter Zijlstra wrote:
> > This is what I actually was wondering about. Why is it a "perf only" > > trace point instead of a TRACE_EVENT()? > > Because I wanted to make perf usable without having to rely on funny > tracepoints. That is, I am less worried about committing software > counters to ABI than I am about TRACE_EVENT(), which still gives me a > terribly uncomfortable feeling. > > Also, building with all CONFIG_TRACE_*=n will still yield a usable perf, > which is something the embedded people might fancy, all that TRACE stuff > adds lots of code.
We could make TRACE_EVENT() into a perf only trace point with CONFIG_TRACE_*=n.
Just saying that it would be nice if ftrace could also see page faults and such.
-- Steve
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