Re: [perf-tools] Build-error in tools/perf/util/annotate.c with LLVM-14

[Andres Freund]

Hi,

On 2022-07-03 22:40:22 +0200, Sedat Dilek wrote:
> My test-case was to build a Linux v5.19-rc4 plus custom patches
> including your v1 patchset.

> make-line:
> 
> /home/dileks/bin/perf stat make V=1 -j4 LLVM=1 LLVM_IAS=1
> PAHOLE=/opt/pahole/bin/pahole LOCALVERSION=-1-amd64-clang
> 14-lto KBUILD_BUILD_HOST=iniza KBUILD_BUILD_USER=sedat.dilek@xxxxxxxxx
> KBUILD_BUILD_TIMESTAMP=2022-07-03 bindeb-pkg
> KDEB_PKGVERSION=5.19.0~rc4-1~bookworm+dileks1
> [...]
> Hmmm, it took a bit longer as usual.

I don't think the patches would affect the performance of this workload - I
don't know the kernel build process well, but I don't see why anything in it
would trigger bpf programs to be disassembled? I guess the additional three
feature tests can take a tiny bit of time, but...

Sent out a new version, did add you as a CC.

Greetings,

Andres Freund