diff options
| author | Giuseppe CAVALLARO <[email protected]> | 2011-10-18 01:39:55 +0000 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2011-10-19 19:24:18 -0400 |
| commit | 45db81e1590c82ddc735ccd33f8adab02528b3e3 (patch) | |
| tree | c3438feab991a27b0d1a696c8118d5d28f414e03 /tools/perf/scripts/python | |
| parent | 286a837217204b1ef105e3a554d0757e4fdfaac1 (diff) | |
stmmac: limit max_mtu in case of 4KiB and use __netdev_alloc_skb (V2)
Problem using big mtu around 4096 bytes is you end allocating (4096
+NET_SKB_PAD + NET_IP_ALIGN + sizeof(struct skb_shared_info) bytes ->
8192 bytes : order-1 pages
It's better to limit the mtu to SKB_MAX_HEAD(NET_SKB_PAD),
to have no more than one page per skb.
Also the patch changes the netdev_alloc_skb_ip_align() done in
init_dma_desc_rings() and uses a variant allowing GFP_KERNEL allocations
allowing the driver to load even in case of memory pressure.
Reported-by: Eric Dumazet <[email protected]>
Signed-off-by: Giuseppe Cavallaro <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions