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SubjectRe: Spinlocks: Factor our GENERIC_LOCKBREAK in order to avoid spin with irqs disable
On Thu, 26 Jun 2008, Petr Tesarik wrote:

> We should probably re-think the whole locking scheme, because spinlocks
> were designed to be held for a short period of time. This was a fair
> assumption when they were introduced, but obviously it is now false in
> many cases (such as virtualization).

And NUMA.

> Ticket-based spinlocks have actually already changed the original
> design, so why not implement a generic "lock scheduler" on top of
> spinlock_t and rwlock_t?

How about making the semaphore / mutex code as fast as spinlocks and just
use that?



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