Re: [PATCH] Linux Kernel Markers

Frank Ch. Eigler
2006-09-19T15:46:55Z

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Hi -

On Tue, Sep 19, 2006 at 08:11:40AM -0700, Martin J. Bligh wrote:

> [...] Why don't we just copy the whole damned function somewhere
> else, and make an instrumented copy (as a kernel module)? Then
> reroute all the function calls through it [...]

Interesting idea. Are you imagining this instrumented copy being
built at kernel compile time (something like building a "-g -O0"
parallel)? Or compiled anew from original sources after deployment?
Or on-the-fly binary-level rewriting a la SPIN?

> OK, it's not completely trivial to do, but simpler than kprobes [...]

None of the three above are that easy. Do you have an implementation
idea?

- FChE

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