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genirq/affinity: Use default affinity mask for reserved vectors 

The reserved vectors at the beginning and the end of the vector space get
cpu_possible_mask assigned as their affinity mask.

All other non-auto affine interrupts get the default irq affinity mask
assigned. Using cpu_possible_mask breaks that rule.

Treat them like any other interrupt and use irq_default_affinity as target
mask.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Thomas Gleixner 2016-11-16 18:36:44 +01:00
parent bfe1307738
commit b6e5d5b947
1 changed files with 2 additions and 2 deletions
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4
kernel/irq/affinity.c
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@ -75,7 +75,7 @@ irq_create_affinity_masks(int nvecs, const struct irq_affinity *affd)
/* Fill out vectors at the beginning that don't need affinity */
for (curvec = 0; curvec < affd->pre_vectors; curvec++)
cpumask_copy(masks + curvec, cpu_possible_mask);
cpumask_copy(masks + curvec, irq_default_affinity);
/* Stabilize the cpumasks */
get_online_cpus();
@ -130,7 +130,7 @@ done:
/* Fill out vectors at the end that don't need affinity */
for (; curvec < nvecs; curvec++)
cpumask_copy(masks + curvec, cpu_possible_mask);
cpumask_copy(masks + curvec, irq_default_affinity);
out:
free_cpumask_var(nmsk);
return masks;