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PR3498: more efficient dwfl searching
- From: "Frank Ch. Eigler" <fche at redhat dot com>
- To: systemtap at sources dot redhat dot com
- Date: Tue, 7 Jul 2009 14:47:38 -0400
- Subject: PR3498: more efficient dwfl searching
Hi -
I committed some code to dramatically improve the pass-2 and pass-3
processing times for scripts that target the kernel, especially for
kernel build trees that have oodles of files under
/lib/modules/.../build. It's basically using the offline module
search function's predicate vigorously, so that stap doesn't bother
open all .ko's on the system just for a kernel probe.
My early testing shows no problems, just speedups, but if you notice
debuginfo being found less well than before, please let me know.
- FChE