| Date | Fri, 11 Sep 2009 15:06:51 -0400 | From | Christoph Hellwig <> | Subject | Re: [PATCH tracing/kprobes 0/7] tracing/kprobes: kprobe-based event tracer update and perf support |
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On Fri, Sep 11, 2009 at 03:03:35PM -0400, Frank Ch. Eigler wrote: > Frederic Weisbecker <fweisbec@gmail.com> writes: > > > [...] I'm really looking forward seeing this C expression-like > > kprobe creation tool. It seems powerful enough to replace printk + > > kernel rebuild. No need anymore to write some printk to debug, > > worrying, [...] > > To a large extent, systemtap had delivered this already some years > ago, including the cushy ponies dancing in the sunlight. While such > low-level machinery is fine, some of our experience indicates that it > is dramatically easier to use if high-level, symbolic, debugging data > is used to compute probe locations and variable names/types/locations.
No, systemtap has been for years failing to delivers this in a way that it could be usefully integrated into the kernel. Masami's patches are exactly the kind of low-level functionality we absolutely need in the kernel tree so that we can built more useful higherlevel tools ontop of this.
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