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--On Monday, August 19, 2002 08:08:10 PM +0200 Ingo Molnar <mingo@elte.hu> wrote: > the problem is that the tracing task wants to do a wait4() on all traced > children, and the only way to get that is to have the traced tasks in the > child list. Eg. strace -f traces a random number of tasks, and after the > PTRACE_CONTINUE call, the wait4 done by strace must be able to 'get > events' from pretty much any of the traced tasks. So unless the ptrace > interface is reworked in an incompatible way, i cannot see how this would > work. wait4 could perhaps somehow search the whole tasklist, but that > could be a pretty big pain even for something like strace. It seems to me it would be worth adding list_heads in the task struct for ptraced tasks and ptraced siblings if it gets rid of the reparenting. Dave McCracken ====================================================================== Dave McCracken IBM Linux Base Kernel Team 1-512-838-3059 dmccr@us.ibm.com T/L 678-3059 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | |||||||||
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