Re: Better CLONE_SETTLS support for Hammer

[Ulrich Drepper]

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Andi Kleen wrote:

> If you just want to save one mmap/allocation: I think the context switch
> overhead will be more expensive than the allocation.

And two more things:

1. every process will already use the prctl(ARCH_SET_FS).  We are
talking here only about the 2nd thread and later.  We need to use
prctl(ARCH_SET_FS) for TLS support.

2. May I remind you that you were in the crowd who complained when we
requested a dedicated thread register?  Yes, I still would prefer that
but I have no energy to battle for that.

- -- 
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Ulrich Drepper \    ,-----------------'   \ Mountain View, CA 94041 USA
Red Hat         `--' drepper at redhat.com `---------------------------
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