[PATCH 1/8] genirq: allow assigning affinity to present but not online CPUs

[Christoph Hellwig]

This will allow us to spread MSI/MSI-X affinity over all present CPUs and
thus better deal with systems where cpus are take on and offline all the
time.

Signed-off-by: Christoph Hellwig <h...@lst.de>
---
 kernel/irq/manage.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 070be980c37a..5c25d4a5dc46 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -361,17 +361,17 @@ static int setup_affinity(struct irq_desc *desc, struct 
cpumask *mask)
        if (irqd_affinity_is_managed(&desc->irq_data) ||
            irqd_has_set(&desc->irq_data, IRQD_AFFINITY_SET)) {
                if (cpumask_intersects(desc->irq_common_data.affinity,
-                                      cpu_online_mask))
+                                      cpu_present_mask))
                        set = desc->irq_common_data.affinity;
                else
                        irqd_clear(&desc->irq_data, IRQD_AFFINITY_SET);
        }
 
-       cpumask_and(mask, cpu_online_mask, set);
+       cpumask_and(mask, cpu_present_mask, set);
        if (node != NUMA_NO_NODE) {
                const struct cpumask *nodemask = cpumask_of_node(node);
 
-               /* make sure at least one of the cpus in nodemask is online */
+               /* make sure at least one of the cpus in nodemask is present */
                if (cpumask_intersects(mask, nodemask))
                        cpumask_and(mask, mask, nodemask);
        }
-- 
2.11.0