where's the definition of trace_kfree_skb?

[Shiyao Ma]

Hi,
I saw this function invocation,
trace_kfree_skb(skb, __builtin_return_address(0));

so I grepped the source for "trace_kfree_skb", but I found no where it's defined.

Where's the definition for it?


Best,
Shiyao.



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