On Thu, 18 Jun 2009, Xiao Guangrong wrote:

Use %pf instead of %p to output the function's address and print the
protocol's name.

Before patch:

  <idle>-0     [000] 60144.542521: kfree_skb: skbaddr=de7b8240 protocol=2048 location=c1365429
  <idle>-0     [000] 60164.488153: kfree_skb: skbaddr=da66f900 protocol=2048 location=c1365429
  <idle>-0     [000] 60193.493933: kfree_skb: skbaddr=deaeb480 protocol=4 location=c134ec25
  <idle>-0     [000] 60253.118421: kfree_skb: skbaddr=de7c4900 protocol=4 location=c134ec25
          
After patch:

  <idle>-0     [000]   169.979205: kfree_skb: skbaddr=ceddc240 protocol=ETH_P_802_2 location=netif_receive_skb
  <idle>-0     [000]   172.587000: kfree_skb: skbaddr=ceddc300 protocol=ETH_P_802_2 location=netif_receive_skb
    ping-3391  [000]   192.109803: kfree_skb: skbaddr=ceddc900 protocol=ETH_P_IP location=icmp_rcv
    ping-3391  [000]   192.109902: kfree_skb: skbaddr=ceddc780 protocol=ETH_P_IP location=icmp_rcv

Changelog v1->v2:
Convert protocol from raw numeric to its name as Frederic's suggestion

Signed-off-by: Xiao Guangrong <redacted>
Acked-by: Frederic Weisbecker <redacted>

I get this:

  CC      net/core/net-traces.o
In file included from include/trace/ftrace.h:262,
                 from include/trace/define_trace.h:57,
                 from include/trace/events/skb.h:107,
                 from net/core/net-traces.c:28:
include/trace/events/skb.h: In function 'ftrace_raw_output_kfree_skb':
include/trace/events/skb.h:78: error: 'ETH_P_IEEE802154' undeclared (first 
use in this function)
include/trace/events/skb.h:78: error: (Each undeclared identifier is 
reported only once
include/trace/events/skb.h:78: error: for each function it appears in.)

-- Steve