nvme: Allocate queues for all possible CPUs

Unlike most drіvers that simply pass the maximum possible vectors to
pci_alloc_irq_vectors NVMe needs to configure the device before allocting
the vectors, so it needs a manual update for the new scheme of using
all present CPUs.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Cc: Keith Busch <keith.busch@intel.com>
Cc: linux-block@vger.kernel.org
Cc: linux-nvme@lists.infradead.org
Link: http://lkml.kernel.org/r/20170626102058.10200-4-hch@lst.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 951042a..b3dcd7a 100644 (file)
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -1525,7 +1525,7 @@ static int nvme_setup_io_queues(struct nvme_dev *dev)
        struct pci_dev *pdev = to_pci_dev(dev->dev);
        int result, nr_io_queues, size;
 
-       nr_io_queues = num_online_cpus();
+       nr_io_queues = num_present_cpus();
        result = nvme_set_queue_count(&dev->ctrl, &nr_io_queues);
        if (result < 0)
                return result;