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SubjectRe: [PATCH] 2.6.16 - futex: small optimization (?)
Ulrich Drepper wrote:
> On 3/27/06, Pierre PEIFFER <> wrote:
>> I found a (optimization ?) problem in the futexes, during a futex_wake,
>> if the waiter has a higher priority than the waker.
> There are no such situations anymore in an optimal userlevel
> implementation. The last problem (in pthread_cond_signal) was fixed
> by the addition of FUTEX_WAKE_OP. The userlevel code you're looking
> at is simply not optimized for the modern kernels.

What are you suggesting here, that the kernel can be inefficient as long
as the user has a way to program around it?

-bill davidsen (
"The secret to procrastination is to put things off until the
last possible moment - but no longer" -me

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