| Date | Wed, 15 Nov 2017 01:36:11 +0000 (UTC) | From | Mathieu Desnoyers <> | Subject | Re: [RFC PATCH for 4.15 18/24] membarrier: provide SHARED_EXPEDITED command |
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----- On Nov 14, 2017, at 3:04 PM, Mathieu Desnoyers mathieu.desnoyers@efficios.com wrote: [...] > + if (!fallback) { > + smp_call_function_many(tmpmask, ipi_mb, NULL, 1); > + free_cpumask_var(tmpmask); > + }
Testing with preempt debugging options showed that I need to disable preemption around smp_call_function_many(). The membarrier private expedited command in 4.14 is also affected. I will add a fix to the series covering that case separately, and CC stable.
Thanks,
Mathieu
-- Mathieu Desnoyers EfficiOS Inc. http://www.efficios.com
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