* 2.6.16-rc1-mm5: explanation text for kretprobe-kretprobe-booster.patch
@ 2006-02-07 20:25 Chuck Ebbert
0 siblings, 0 replies; only message in thread
From: Chuck Ebbert @ 2006-02-07 20:25 UTC (permalink / raw)
To: Andrew Morton
Cc: David S. Miller, Ananth N Mavinakayanahalli,
Anil S Keshavamurthy, Prasanna S Panchamukhi, linux-kernel,
Masami Hiramatsu
In kretprobe-kretprobe-booster.patch:
> From: Masami Hiramatsu <hiramatu@sdl.hitachi.co.jp>
>
> What does this do?
>
Here's a description:
In normal operation, kretprobe makes a target function return
to trampoline code. A kprobe (called trampoline_probe) has
been inserted in the trampoline code. When the kernel hits this
kprobe, it calls kretprobe's handler and it returns to the original
return address.
Kretprobe-booster removes the trampoline_probe. It allows the
trampoline code to call kretprobe's handler directly instead of
invoking kprobe. The trampoline code returns to the original return
address.
--
Chuck
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2006-02-07 20:25 2.6.16-rc1-mm5: explanation text for kretprobe-kretprobe-booster.patch Chuck Ebbert
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