Hello:
This series was applied to bpf/bpf-next.git (master)
by Alexei Starovoitov <ast@xxxxxxxxxx>:
On Fri, 5 Jan 2024 18:48:16 +0800 you wrote:
> From: Hou Tao <houtao1@xxxxxxxxxx>
>
> Hi,
>
> The motivation of inlining bpf_kptr_xchg() comes from the performance
> profiling of bpf memory allocator benchmark [1]. The benchmark uses
> bpf_kptr_xchg() to stash the allocated objects and to pop the stashed
> objects for free. After inling bpf_kptr_xchg(), the performance for
> object free on 8-CPUs VM increases about 2%~10%. However the performance
> gain comes with costs: both the kasan and kcsan checks on the pointer
> will be unavailable. Initially the inline is implemented in do_jit() for
> x86-64 directly, but I think it will more portable to implement the
> inline in verifier.
>
> [...]
Here is the summary with links:
- [bpf-next,v3,1/3] bpf: Support inlining bpf_kptr_xchg() helper
https://git.kernel.org/bpf/bpf-next/c/ac780beba187
- [bpf-next,v3,2/3] selftests/bpf: Factor out get_xlated_program() helper
https://git.kernel.org/bpf/bpf-next/c/10cdab919df6
- [bpf-next,v3,3/3] selftests/bpf: Test the inlining of bpf_kptr_xchg()
https://git.kernel.org/bpf/bpf-next/c/ca8cf57c7754
You are awesome, thank you!
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