https://github.com/google/autofdo has been updated. Now create_gcov/dump_gcov are added back and can be built separately.
Please look at "2.2 Build autofdo tool for gcc" in https://github.com/google/autofdo#readme On Wed, Apr 28, 2021 at 10:40 PM Andi Kleen <a...@linux.intel.com> wrote: > > On Mon, Apr 26, 2021 at 06:40:56PM +0000, Hongtao Yu wrote: > > Andi, thanks for pointing out the perf script issues. Can you please > > elaborate a bit on the exact issue you have seen? We’ve been using > > specific output of perf script such as mmap, LBR and callstack events > > filtered by process id. It works fine so far but may certainly hit issues > > in the future with extended uses. > > Okay I took a look at the latest autofdo now. It seems to be basically > a LLVM project now that depends on LLVM to even build with all kinds > of dependency hell on some old LLVM version and other packages. > > I guess gcc will really need a replacement that doesn't pull in > all of LLVM if it wants to continue supporting autofdo. > > I'm myself unable to build now. > > I'm using the old version I had a git fork of and that > was before all of this. I added a patch to make it work > with the latest perf by ignoring increased perf_attr > and unknown perf events. > > Honza please use > > https://github.com/andikleen/autofdo -b perf-future > > for testing. > > -Andi >
