Export package btf #665
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Export package btf #665
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Make users pass a *btf.Spec directly if they want to specify a custom target. This allows reusing a single spec between multiple program loads without re-parsing the BTF. Add LoadSpec as a convenience to read BTF from a file on disk. Fixes cilium#550
Setting ProgramSpec.AttachTarget indicates that the program we're about to load references another program, for example when using freplace to hotpatch a function in a program. The code path which takes care of this is currently intertwined with the support for attaching to a type or function in the kernel, which happens via ProgramSpec.AttachTo. This makes it hard to follow what is going on. Split out the two paths to make it clearer what is going on.
This was referenced May 11, 2022
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This can go in after #660 is merged.
program: make ProgramOptions.TargetBTF a *btf.Spec
btf: export package