Re: Usage semantics of atomic_set ( )

[Chris Snook]

Vineet Gupta wrote:
> I'm trying to implement atomic ops for a CPU which has no inherent
> support for Read-Modify-Write Ops. Instead of using a global spin lock
> which protects all the atomic APIs, I want to use a spin lock per
> instance of atomic_t.

What operations are you using to implement spinlocks?

A few architectures use arrays of spinlocks to implement atomic_t.  I believe 
sparc and parisc are among them.  Assuming your spinlock implementation is sound 
and efficient, the same technique should work for you.

	-- Chris
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