[Bug kprobes/2062] Return probes does not scale well on SMP box

[jkenisto at us dot ibm dot com]

------- Additional Comments From jkenisto at us dot ibm dot com  2006-04-18 18:09 -------
Created an attachment (id=974)
 --> (http://sourceware.org/bugzilla/attachment.cgi?id=974&action=view)
Thoughts on finer-grained locking for return probes

I don't see how we can avoid significant lock overhead, because kretprobe data
structures are much more dynamic that kprobe data structures: we're constantly
moving kretprobe_instances back and forth between the kretprobe's free list and
kretprobe_inst_table[].

I've been thinking about this issue, though.  Attached are my current thoughts
on finer-grained locking.

-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=2062

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