Messages in this thread | | | Date | Wed, 17 Mar 2010 10:52:30 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH RFC 00/11] lock monitor: Separate features related to lock |
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* Frederic Weisbecker <fweisbec@gmail.com> wrote:
> > You add chained indirect calls into all lock ops, that's got to hurt. > > Well, the idea was not bad at the first glance. It was separating lockdep > and lock events codes. > > But indeed, the indirect calls plus the locking are not good for such a fast > path.
What would be nice to have is some sort of dynamic patching approach to enable _both_ lockdep, lockstat and perf lock.
If TRACE_EVENT() tracepoints were patchable we could use them. (but they arent right now)
Ingo
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