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| author | K. Y. Srinivasan <kys@microsoft.com> | 2015-06-01 06:27:03 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-06-13 01:58:33 +0200 |
| commit | 294409d20572e9bcf857328286433f851168d54a (patch) | |
| tree | 798aecdad08fef940a57ae36800fb2c971a29b4b /drivers/hv | |
| parent | parport: check exclusive access before register (diff) | |
| download | linux-294409d20572e9bcf857328286433f851168d54a.tar.xz linux-294409d20572e9bcf857328286433f851168d54a.zip | |
Drivers: hv: vmbus: Allocate ring buffer memory in NUMA aware fashion
Allocate ring buffer memory from the NUMA node assigned to the channel.
Since this is a performance and not a correctness issue, if the node specific
allocation were to fail, fall back and allocate without specifying the node.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv')
| -rw-r--r-- | drivers/hv/channel.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c index 7a1c2db1826b..603ce97e9027 100644 --- a/drivers/hv/channel.c +++ b/drivers/hv/channel.c @@ -73,6 +73,7 @@ int vmbus_open(struct vmbus_channel *newchannel, u32 send_ringbuffer_size, unsigned long flags; int ret, err = 0; unsigned long t; + struct page *page; spin_lock_irqsave(&newchannel->lock, flags); if (newchannel->state == CHANNEL_OPEN_STATE) { @@ -87,8 +88,17 @@ int vmbus_open(struct vmbus_channel *newchannel, u32 send_ringbuffer_size, newchannel->channel_callback_context = context; /* Allocate the ring buffer */ - out = (void *)__get_free_pages(GFP_KERNEL|__GFP_ZERO, - get_order(send_ringbuffer_size + recv_ringbuffer_size)); + page = alloc_pages_node(cpu_to_node(newchannel->target_cpu), + GFP_KERNEL|__GFP_ZERO, + get_order(send_ringbuffer_size + + recv_ringbuffer_size)); + + if (!page) + out = (void *)__get_free_pages(GFP_KERNEL|__GFP_ZERO, + get_order(send_ringbuffer_size + + recv_ringbuffer_size)); + else + out = (void *)page_address(page); if (!out) { err = -ENOMEM; |