lkml.org 
[lkml]   [2018]   [Nov]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v3] genirq/matrix: Choose CPU for managed IRQs based on how many of them are allocated
On Sat, 3 Nov 2018, Thomas Gleixner wrote:
> 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 ?

Another thing. If we add that counter, then it would be good to expose it
in the debugfs files as well.

Thanks,

tglx

\
 
 \ /
  Last update: 2018-11-03 18:16    [W:0.068 / U:0.012 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site