genirq/msi: Add cpumask allocation to alloc_msi_entry

For irq spreading want to store affinity masks in the msi_entry. Add the
infrastructure for it.

We allocate an array of cpumasks with an array size of the number of used
vectors in the entry, so we can hand in the information per linux interrupt
later.

As we hand in the number of used vectors, we assign them right
away. Convert all the call sites.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: axboe@fb.com
Cc: keith.busch@intel.com
Cc: agordeev@redhat.com
Cc: linux-block@vger.kernel.org
Cc: Christoph Hellwig <hch@lst.de>
Link: http://lkml.kernel.org/r/1473862739-15032-2-git-send-email-hch@lst.de

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/base/platform-msi.c b/drivers/base/platform-msi.c
index 279e53989374..be6a599bc0c1 100644
--- a/drivers/base/platform-msi.c
+++ b/drivers/base/platform-msi.c
@@ -142,13 +142,12 @@ static int platform_msi_alloc_descs_with_irq(struct device *dev, int virq,
         }
 
         for (i = 0; i < nvec; i++) {
-                desc = alloc_msi_entry(dev);
+                desc = alloc_msi_entry(dev, 1, NULL);
                 if (!desc)
                         break;
 
                 desc->platform.msi_priv_data = data;
                 desc->platform.msi_index = base + i;
-                desc->nvec_used = 1;
                 desc->irq = virq ? virq + i : 0;
 
                 list_add_tail(&desc->list, dev_to_msi_list(dev));