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Add missing program type feature probes #890

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merged 2 commits into from Dec 23, 2022

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rgo3
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@rgo3 rgo3 commented Dec 15, 2022

With this PR we support feature probes for all program types the library currently supports.

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@ti-mo ti-mo left a comment

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Exciting!

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With this commit it is possible to set `btf.funcInfoMeta` on
asm.Instructions from outside the `btf` package.

Signed-off-by: Robin Gögge <r.goegge@isovalent.com>
Hardcode bpf_init as the fentry probe target. It's been part of the kernel
since 4.4 (torvalds/linux@b2197755b263), has been completely untouched,
and has a simple signature. For probing a BPF program type, it makes sense
to target a symbol from the BPF subsystem.

Signed-off-by: Robin Gögge <r.goegge@isovalent.com>
Signed-off-by: Timo Beckers <timo@isovalent.com>
@ti-mo ti-mo merged commit c7ba7f0 into cilium:master Dec 23, 2022
@rgo3 rgo3 deleted the add-missing-prog-probes branch December 23, 2022 11:15
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3 participants