Messages in this thread | | | Date | Wed, 22 Apr 2009 18:20:39 -0400 (EDT) | From | Tim Abbott <> | Subject | Re: [PATCH 1/5] ftrace: use module notifier for function tracer |
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On Wed, 22 Apr 2009, Ingo Molnar wrote:
> I suspect ksplice could make use of text_mutex?
Yes, this is what I was imagining. Thanks for pointing this out! I plan to make Ksplice use this for the next version of the Ksplice patch series.
However, since Ksplice can be built as a module, we'll want to EXPORT_SYMBOL_GPL(text_mutex). The comment above text_mutex's definition suggests some people would prefer not to have modules patching the kernel text, and so this point might be contentious. I've found support for building Ksplice as a module to be a useful feature in case one needs to use multiple different versions of Ksplice on the same system (e.g. because the version built in to the kernel doesn't support a particular patch).
-Tim Abbott
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