Re: [PATCH] 2.6.16 - futex: small optimization (?)
- From: "Ulrich Drepper" <drepper@xxxxxxxxx>
- Date: Tue, 28 Mar 2006 07:02:42 -0800
On 3/27/06, Pierre PEIFFER <pierre.peiffer@xxxxxxxx> 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.
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- From: Pierre PEIFFER
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