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| author | Eric Dumazet <edumazet@google.com> | 2013-12-05 04:45:08 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-12-06 15:24:02 -0500 |
| commit | e6247027e5173c00efb2084d688d06ff835bc3b0 (patch) | |
| tree | 44c1fc4da5358f778fc82a1056ef9a2a6e7eea0e /mm | |
| parent | f96eb74c84ebb09a03031f7f1e51789a928f9de0 (diff) | |
| download | kernel-common-e6247027e5173c00efb2084d688d06ff835bc3b0.tar.gz kernel-common-e6247027e5173c00efb2084d688d06ff835bc3b0.tar.bz2 kernel-common-e6247027e5173c00efb2084d688d06ff835bc3b0.zip | |
net: introduce dev_consume_skb_any()
Some network drivers use dev_kfree_skb_any() and dev_kfree_skb_irq()
helpers to free skbs, both for dropped packets and TX completed ones.
We need to separate the two causes to get better diagnostics
given by dropwatch or "perf record -e skb:kfree_skb"
This patch provides two new helpers, dev_consume_skb_any() and
dev_consume_skb_irq() to be used for consumed skbs.
__dev_kfree_skb_irq() is slightly optimized to remove one
atomic_dec_and_test() in fast path, and use this_cpu_{r|w} accessors.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions