Muchun Song writes:
> When the cmdline of "nr_cpus" is not valid, the @nr_cpu_ids is assigned
> a stale value. The nr_cpus is only valid when get_option() return 1. So
> check the return value to prevent this.
>
> Signed-off-by: Muchun Song
> ---
> changelog in v2:
> 1) Rework the commit log.
>
When the cmdline of "nr_cpus" is not valid, the @nr_cpu_ids is assigned
a stale value. The nr_cpus is only valid when get_option() return 1. So
check the return value to prevent this.
Signed-off-by: Muchun Song
---
changelog in v2:
1) Rework the commit log.
2) Rework the return value check.
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