Re: [PREEMPT_RT] [PATCH] Fix BUG: using smp_processor_id() in preemptible [00000000] code: nfsd/2852

[Ingo Molnar]

* Ankita Garg <ankita@xxxxxxxxxx> wrote:

> While running some tests on 2.6.20-rt8 with DEBUG_PREEMPT on, I hit 
> the following BUG:

> This patch fixes the above issue which arises due to the call to 
> smp_processor_id in drain_array() from mm/slab.c. smp_processor_id() 
> invocation is redundant here, as the call to slab_spin_lock_irq() 
> already fills the value of this_cpu using raw_smp_processor_id().

thanks, applied!

	Ingo
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