On Wed, 9 Jan 2008, Roland McGrath wrote:
>
> The show_task function invoked by sysrq-t et al displays the
> pid and parent's pid of each task. It seems more useful to
> show the actual process hierarchy here than who is using
> ptrace on each process.
Hmm. It could go both ways. If the problem is some ptrace()/wait4()
interaction issue (which is certainly not unheard of!) the parent that
matters for the kernel may be the right thing to print out.
I wonder if we should just print out both (or perhaps print out the
ptrace parent only if it differs from the normal parent?)
I'll apply this, because I agree that it's sensible in general, I just
wonder how often anybody really even cares about the parent information
when it's not about some wait-related issue..
Linus
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