diff options
| author | James Morris <jmorris@namei.org> | 2018-02-21 08:21:41 -0800 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2018-02-21 08:21:41 -0800 |
| commit | a02633e9b13dcb9b1a656b08f81bc8ba2d4d2294 (patch) | |
| tree | 3d5ef56eee3117cd61812759a255fa293d8044b8 /kernel/irq/matrix.c | |
| parent | d21bd6898336a7892914d308d5e0868f0b863571 (diff) | |
| parent | 91ab883eb21325ad80f3473633f794c78ac87f51 (diff) | |
Merge tag 'v4.16-rc2' into next-general
Sync to Linux 4.16-rc2 for developers to work against.
Diffstat (limited to 'kernel/irq/matrix.c')
| -rw-r--r-- | kernel/irq/matrix.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/kernel/irq/matrix.c b/kernel/irq/matrix.c index 0ba0dd8863a7..5187dfe809ac 100644 --- a/kernel/irq/matrix.c +++ b/kernel/irq/matrix.c @@ -321,15 +321,23 @@ void irq_matrix_remove_reserved(struct irq_matrix *m) int irq_matrix_alloc(struct irq_matrix *m, const struct cpumask *msk, bool reserved, unsigned int *mapped_cpu) { - unsigned int cpu; + unsigned int cpu, best_cpu, maxavl = 0; + struct cpumap *cm; + unsigned int bit; + best_cpu = UINT_MAX; for_each_cpu(cpu, msk) { - struct cpumap *cm = per_cpu_ptr(m->maps, cpu); - unsigned int bit; + cm = per_cpu_ptr(m->maps, cpu); - if (!cm->online) + if (!cm->online || cm->available <= maxavl) continue; + best_cpu = cpu; + maxavl = cm->available; + } + + if (maxavl) { + cm = per_cpu_ptr(m->maps, best_cpu); bit = matrix_alloc_area(m, cm, 1, false); if (bit < m->alloc_end) { cm->allocated++; @@ -338,8 +346,8 @@ int irq_matrix_alloc(struct irq_matrix *m, const struct cpumask *msk, m->global_available--; if (reserved) m->global_reserved--; - *mapped_cpu = cpu; - trace_irq_matrix_alloc(bit, cpu, m, cm); + *mapped_cpu = best_cpu; + trace_irq_matrix_alloc(bit, best_cpu, m, cm); return bit; } } |