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authorfche <fche>2008-02-19 02:48:02 +0000
committerfche <fche>2008-02-19 02:48:02 +0000
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2008-02-18 Frank Ch. Eigler <fche@elastic.org>
* NEWS, stapprobes.5.in: Document basic (non-symbolic prototype) user-space probe points.
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* What's new in version 0.6 / 0.6.1
+- Prototype support for user-space probing is showing some progress.
+ No symbolic notations are supported yet (so no probing by function names,
+ file names, process names, and no access to $context variables), but at
+ least it's something:
+
+ probe process(PID).statement(ADDRESS).absolute { }
+
+ This will set a uprobe on the given process-id and given virtual address.
+ The proble handler runs in kernel-space as usual, and can generally use
+ existing tapset functions.
+
- Crash utility can retrieve systemtap's relay buffer from a kernel dump
image by using staplog which is a crash extension module. To use this
feature, type commands as below from crash(8)'s command line: