On Tue, 28 Mar 2017 16:15:57 +0800, Shiyao Ma said: > 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. For some uses, the Linux kernel forms a definition via the preprocessor, by gluing together several strings. Try doing 'git grep trace_##' (or 'grep -r trace_## .' if you don't have a git tree.
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