On Tue, 5 Jan 2021, Cong Wang wrote:
> On Mon, Jan 4, 2021 at 7:29 AM Alan Maguire wrote:
> >
> > BPF Type Format (BTF) provides a description of kernel data structures
> > and of the types kernel functions utilize as arguments and return values.
> >
> > A helper was recently added -
On Mon, Jan 4, 2021 at 7:29 AM Alan Maguire wrote:
>
> BPF Type Format (BTF) provides a description of kernel data structures
> and of the types kernel functions utilize as arguments and return values.
>
> A helper was recently added - bpf_snprintf_btf() - that uses that
> description to create a
On Mon, Jan 04, 2021 at 03:26:31PM +, Alan Maguire wrote:
>
> ksnoop can be used to show function signatures; for example:
>
> $ ksnoop info ip_send_skb
> int ip_send_skb(struct net * net, struct sk_buff * skb);
>
> Then we can trace the function, for example:
>
> $ ksnoop trace
BPF Type Format (BTF) provides a description of kernel data structures
and of the types kernel functions utilize as arguments and return values.
A helper was recently added - bpf_snprintf_btf() - that uses that
description to create a string representation of the data provided,
using the BTF id
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