Messages in this thread | | | Subject | Re: [PATCH v2 04/19] genirq: Add new struct ipi_mask and helper functions | From | Qais Yousef <> | Date | Mon, 30 Nov 2015 13:57:35 +0000 |
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On 11/30/2015 01:11 PM, Thomas Gleixner wrote: > On Mon, 30 Nov 2015, Qais Yousef wrote: >> >> Yes it would be much better to reuse it but wouldn't the runtime checks >> against nr_cpu_ids create problems especially when CPUMASK_ON_STACK is >> defined? > nr_cpu_ids == find_last_bit(cpumask_bits(cpu_possible_mask),NR_CPUS) + 1; > >
OK. I can partially see your point. I can't see how the extra coprocessor bits will be set in cpu_possible_mask and whether this will affect normal linux operation (ie: will it think it can bring that cpu up or migrate irqs to it?).
Since you don't see an issue with it, it must be just a missing gap in my knowledge that I'll fill while doing this work.
Thanks, Qais
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