Messages in this thread | | | Date | Tue, 7 Feb 2006 15:25:52 -0500 | From | Chuck Ebbert <> | Subject | 2.6.16-rc1-mm5: explanation text for kretprobe-kretprobe-booster.patch |
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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.
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