Re: [PATCH net-next V2 1/2] sched/topology: Expose sched_numa_find_closest

Peter Zijlstra
2022-07-18T13:47:30Z

On Mon, Jul 18, 2022 at 03:43:14PM +0300, Tariq Toukan wrote:
> This logic can help device drivers prefer some remote cpus
> over others, according to the NUMA distance metrics.
>
> Reviewed-by: Gal Pressman <gal@nvidia.com>
> Signed-off-by: Tariq Toukan <tariqt@nvidia.com>

Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>

> ---
> include/linux/sched/topology.h | 2 ++
> kernel/sched/topology.c | 1 +
> 2 files changed, 3 insertions(+)
>
> v2:
> Replaced EXPORT_SYMBOL with EXPORT_SYMBOL_GPL, per Peter's comment.
>
> diff --git a/include/linux/sched/topology.h b/include/linux/sched/topology.h
> index 56cffe42abbc..d467c30bdbb9 100644
> --- a/include/linux/sched/topology.h
> +++ b/include/linux/sched/topology.h
> @@ -61,6 +61,8 @@ static inline int cpu_numa_flags(void)
> {
> return SD_NUMA;
> }
> +
> +int sched_numa_find_closest(const struct cpumask *cpus, int cpu);
> #endif
>
> extern int arch_asym_cpu_priority(int cpu);
> diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c
> index 05b6c2ad90b9..274fb2bd3849 100644
> --- a/kernel/sched/topology.c
> +++ b/kernel/sched/topology.c
> @@ -2066,6 +2066,7 @@ int sched_numa_find_closest(const struct cpumask *cpus, int cpu)
>
> return found;
> }
> +EXPORT_SYMBOL_GPL(sched_numa_find_closest);
>
> #endif /* CONFIG_NUMA */
>
> --
> 2.21.0
>