Messages in this thread | | | Date | Thu, 26 Jun 2008 10:02:05 -0700 (PDT) | From | Christoph Lameter <> | Subject | Re: Spinlocks: Factor our GENERIC_LOCKBREAK in order to avoid spin with irqs disable |
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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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