Messages in this thread | | | Date | Wed, 3 May 2006 23:01:25 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH -rt] revert bh_lru_lock() to preempt_disable() |
| |
* Daniel Walker <dwalker@mvista.com> wrote:
> > i agree that this is a problem, but the fix is incorrect. What would be > > the right approach is to convert the PER_CPU bh_lrus to PER_CPU_LOCKED, > > and to use the appropriate primitives to use them. That automatically > > makes this code rt-safe. (it isnt right now) > > Hmm, in UP it should be safe to access per cpu data under either a > preempt_disable or local_irq_disable . I'm not sure how RT changes > that .. Is there some other part of the code that isn't rt-safe, which > I've overlooked ?
hm, you are right - that code can be in a preempt-off section. I've applied your patch.
Ingo - 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/
| |