[Bug testsuite/10084] systemtap.examples/network/dropwatch fails on kernels without kfree_skb tracepoint

[wenji dot huang at oracle dot com]

------- Additional Comments From wenji dot huang at oracle dot com  2009-07-03 07:54 -------
See the definition of trace point in  kfree_skb(struct sk_buff *skb)
        ...
        else if (likely(!atomic_dec_and_test(&skb->users)))
                 return;
         trace_kfree_skb(skb, __builtin_return_address(0));
         __kfree_skb(skb);
 }

Maybe we can select __kfree_skb as the probe point. But Not easy to find the
replacement for the parameter __builtin_return_address(0).
 

-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=10084

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