v4.14 : Can you apply 78c855835478 ("perf bench: Share some global variables to fix build with gcc 10")

Hi,

Could you please apply on v4.14 commit 78c855835478 ("perf bench: Share some global variables to fix build with gcc 10") from v4.19.

Upstream commit is e4d9b04b973b ("perf bench: Share some global variables to fix build with gcc 10")

Thanks Christophe