From: Keith Busch Date: Wed, 19 Apr 2017 23:51:10 +0000 (-0400) Subject: genirq/affinity: Fix calculating vectors to assign X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b72f8051f34b8164a62391e3676edc34523c5952;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git genirq/affinity: Fix calculating vectors to assign The vectors_per_node is calculated from the remaining available vectors. The current vector starts after pre_vectors, so we need to subtract that from the current to properly account for the number of remaining vectors to assign. Fixes: 3412386b531 ("irq/affinity: Fix extra vecs calculation") Reported-by: Andrei Vagin Signed-off-by: Keith Busch Link: http://lkml.kernel.org/r/1492645870-13019-1-git-send-email-keith.busch@intel.com Signed-off-by: Thomas Gleixner --- diff --git a/kernel/irq/affinity.c b/kernel/irq/affinity.c index d052947fe785..e2d356dd7581 100644 --- a/kernel/irq/affinity.c +++ b/kernel/irq/affinity.c @@ -98,7 +98,7 @@ irq_create_affinity_masks(int nvecs, const struct irq_affinity *affd) int ncpus, v, vecs_to_assign, vecs_per_node; /* Spread the vectors per node */ - vecs_per_node = (affv - curvec) / nodes; + vecs_per_node = (affv - (curvec - affd->pre_vectors)) / nodes; /* Get the cpus on this node which are in the mask */ cpumask_and(nmsk, cpu_online_mask, cpumask_of_node(n));