> strace does a lot more work than necessary for this kind of filtering.
> It fetches all the arguments and *data* for the system call through a
> straw one word wide named PTRACE_PEEKDATA. A 'ucore' program wouldn't
> have to do that, because almost all the time, all it needs is ORIG_EAX.
On a UP box it still need to switch to the tracing context once (or
more) per system call. Ouch.
-cw
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