Hello:
This patch was applied to bpf/bpf-next.git (master)
by Andrii Nakryiko <andrii@xxxxxxxxxx>:
On Wed, 19 Jan 2022 10:02:14 -0800 you wrote:
> Add a hashmap to map the string offsets from a source btf to the
> string offsets from a target btf to reduce overheads.
>
> btf__add_btf() calls btf__add_str() to add strings from a source to a
> target btf. It causes many string comparisons, and it is a major
> hotspot when adding a big btf. btf__add_str() uses strcmp() to check
> if a hash entry is the right one. The extra hashmap here compares
> offsets of strings, that are much cheaper. It remembers the results
> of btf__add_str() for later uses to reduce the cost.
>
> [...]
Here is the summary with links:
- [v4,bpf-next] libbpf: Improve btf__add_btf() with an additional hashmap for strings.
https://git.kernel.org/bpf/bpf-next/c/d81283d27266
You are awesome, thank you!
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