Re: [rfc][patch 2/2] x86_64: FIFO ticket spinlocks

[Ingo Molnar]

* Nick Piggin <npiggin@xxxxxxx> wrote:

> [...] trylock is more significantly slower, but they are relatively 
> rare.

trylock is the main thing that the spinlock debugging code uses, and 
SPINLOCK_DEBUG is frequently enabled by distro kernels. OTOH, the cost 
looks like to be +5 instructions, right? Still ...

	Ingo
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