Re: Backport request: commit 168200b6 to fix perf build with gcc 10

[Greg KH <gregkh@linuxfoundation.org>]

On Wed, Oct 14, 2020 at 12:48:42PM +0100, Paul Barker wrote:
> Hi folks,
> 
> I'm seeing errors building perf with gcc 10 on the linux-5.4.y branch.
> The linker fails as the traceid_list symbol is defined in multiple
> compilation units. It looks like commit
> 168200b6d6ea0cb5765943ec5da5b8149701f36a ("perf cs-etm: Move
> definition of 'traceid_list' global variable from header file") was
> added to master to fix this but it's not been backported yet.
> Cherry-picking this commit locally fixed my build issues.
> 
> Looking at the Fixes tag in that commit, this should probably go into
> every stable branch from 4.16.y onwards which is still maintained.
> 
> See https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=168200b6d6ea0cb5765943ec5da5b8149701f36a
> 
> Let me know if you need more info.

Now queued up, but perf does not seem to be building on the 4.19.y tree
at the moment, so I don't know how useful that will be there :)

thanks,

greg k-h