Re: spin_lock() and smp/multicall logic

[Stephen Hemminger]

john moser wrote:

> As always, CC all replies back to me.
>
> I'm looking at include/linux/spinlock.h and I'm incredibly confused on something.

Buggy implementation of run_once deleted

> SO the two questions I'd like to address here are:
>
> 1) What is the purpose of spin_lock()
> 2) Am I the first person to come up with this method of non-parallel execution
>   guarentee?

You invented an unsafe version of monitor using spin-locks.
Go read a on SMP operating systems.

"UNIX(R) Systems for Modern Architectures: Symmetric Multiprocessing and 
Caching for Kernel Programmers"




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