CODEWITHSUNDEEP
linux-kernelnetwork-programming
Guocheng
Guocheng

Reputation: 553

Where is trace_netif_rx_entry function defined in Linux kernel?

in linux kernel source codes, net/core/dev.c, the function netif_rx() calls trace_netif_rx_entry():

int netif_rx(struct sk_buff *skb)
{
    trace_netif_rx_entry(skb);
    return netif_rx_internal(skb);
}

However, I searched via grep and could not find the definition of trace_netif_rx_entry in the source codes. Then I googled still no answer. Could anyone help ?

Upvotes: 3

Views: 923

Answers (1)

Guocheng
Guocheng

Reputation: 553

I know the reason: a trick named Linux trace point

Upvotes: 2

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