* David Schwartz <[email protected]> wrote:
> > (user-space spinlocks are broken beyond words for anything but
> > perhaps SCHED_FIFO tasks.)
>
> User-space spinlocks are broken so spinlocks can only be implemented
> in kernel-space? Even if you use the kernel to schedule/unschedule the
> tasks, you still have to spin in user-space.
user-space spinlocks (in anything but SCHED_FIFO tasks) are pretty
broken because they waste CPU time. (not as broken as yield, because
"wasting CPU time" is a more deterministic act, but still broken) Could
you cite a single example where user-space spinlocks are technically the
best solution?
Ingo
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