> On Tue, Nov 18, 2014 at 8:22 AM, Pankaj Gupta wrote:
> >
> > As vmalloc() adds overhead on a critical network path,
> > __GFP_REPEAT flag is used with kzalloc() to do this fallback
> > only when really needed.
> >
>
> Are you sure we need __GFP_REPEAT? We have vmalloc() as
> fallback of kmallo
On Tue, Nov 18, 2014 at 8:22 AM, Pankaj Gupta wrote:
>
> As vmalloc() adds overhead on a critical network path,
> __GFP_REPEAT flag is used with kzalloc() to do this fallback
> only when really needed.
>
Are you sure we need __GFP_REPEAT? We have vmalloc() as
fallback of kmalloc() in many places
netif_alloc_rx_queues() uses kcalloc() to allocate memory
for "struct netdev_queue *_rx" array.
If we are doing large rx queue allocation kcalloc() might
fail, so this patch does a fallback to vzalloc().
Similar implementation is done for tx queue allocation in
netif_alloc_netdev_queues().
We avoi
3 matches
Mail list logo
