genirq/affinity: Fix calculating vectors to assign
authorKeith Busch <keith.busch@intel.com>
Wed, 19 Apr 2017 23:51:10 +0000 (19:51 -0400)
committerThomas Gleixner <tglx@linutronix.de>
Thu, 20 Apr 2017 14:03:09 +0000 (16:03 +0200)
commitb72f8051f34b8164a62391e3676edc34523c5952
tree3b3bceecb9f7936319f0266740e92a8e89cb7277
parentf61143c45077df4fa78e2f1ba455a00bbe1d5b8c
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 <avagin@virtuozzo.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Link: http://lkml.kernel.org/r/1492645870-13019-1-git-send-email-keith.busch@intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
kernel/irq/affinity.c