[PATCH] [V2] add options to ps(1) to display lwp data

[Simon 'corecode' Schubert]

Matthew Dillon wrote:
    I think we've overloaded that field too much already.  The field is 
    called 'tid' and tid means thread id and thread id means the LWP id.

    If we want to export a pointer to the kernel thread structure then we
    need to do it with a new field.
It wasn't ment to be a pointer, just an identifier.  And the td pointer is a perfect identifier.  Of course, it doesn't format as nicely as a small number, but so what.  pid == -1 means kernel, tid *always* means thread identifier.

cheers
 simon
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