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On Sat, 2003-08-02 at 01:20, Ulrich Drepper wrote: > Your approach with iterating over the threads is not acceptable (at > least to me). I've noticed that postings with patches get paid a lot more attention to those without. It was just the patch I used to prove to myself what the problem is. > It is racy (concurrent runs are not synchronized) Erm, it's protected by tasklist_lock, so that isn't a problem. > and has > a non-constant time. We've sketched out already a mechanism which > solves to problem. Basically, most of the time the value from the > thread group leader is used (just follow the pointer). Then setting the > value is an atomic operation an constant. I was considering that, but it needs changes all over the place where people look at current->pgrp. This way makes for a clearer patch. J - 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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