NVMe: Allocate queues only for online cpus
authorKeith Busch <keith.busch@intel.com>
Fri, 13 May 2016 18:38:09 +0000 (12:38 -0600)
committerJens Axboe <axboe@fb.com>
Tue, 17 May 2016 23:14:21 +0000 (17:14 -0600)
commit2800b8e7d9dfca1fd9d044dcf7a046b5de5a7239
tree94ebf9f41b80b80f06faeacb234ec8673b471e29
parent24b9f0cf00c8e8df29a4ddfec8c139ad62753113
NVMe: Allocate queues only for online cpus

The driver previously requested allocating queues for the total possible
number of CPUs so that blk-mq could rebalance these if CPUs were added
after initialization. The number of hardware contexts can now be changed
at runtime, so we only need to allocate the number of online queues
since we can add more later.

Suggested-by: Jeff Lien <jeff.lien@hgst.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
drivers/nvme/host/pci.c