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Zwane Mwaikambo <zwane@fsmlabs.com> wrote: >> The following patch introduces cpu_lock_yield which allows architectures > to possibly yield processor resources during lock contention. err.. Haven't you just invented a really sucky semaphore? > The original > requirement stems from Paul's requirement on PPC64 LPAR systems to yield > the processor to the hypervisor instead of spinning. Maybe Paul needs to use a semaphore. Now, maybe Paul has tied himself into sufficiently tangly locking knots that in some circumstances he needs to spin on the lock and cannot schedule away. But he can still use a semaphore and spin on down_trylock. Confused by all of this. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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