Re: [PATCH v3] genirq/matrix: Choose CPU for managed IRQs based on how many of them are allocated

[Thomas Gleixner]

Long,

On Fri, 2 Nov 2018, Long Li wrote:
>  /**
>   * irq_matrix_assign_system - Assign system wide entry in the matrix
>   * @m:               Matrix pointer
> @@ -269,7 +291,7 @@ int irq_matrix_alloc_managed(struct irq_matrix *m, const 
> struct cpumask *msk,
>       if (cpumask_empty(msk))
>               return -EINVAL;
>  
> -     cpu = matrix_find_best_cpu(m, msk);
> +     cpu = matrix_find_best_cpu_managed(m, msk);
>       if (cpu == UINT_MAX)
>               return -ENOSPC;
>  
> @@ -282,6 +304,7 @@ int irq_matrix_alloc_managed(struct irq_matrix *m, const 
> struct cpumask *msk,
>               return -ENOSPC;
>       set_bit(bit, cm->alloc_map);
>       cm->allocated++;
> +     cm->managed_allocated++;
>       m->total_allocated++;
>       *mapped_cpu = cpu;
>       trace_irq_matrix_alloc_managed(bit, cpu, m, cm);

so far so good. But what exactly decrements managed_allocated ?

Thanks,

        tglx