[PATCH][RFT] Re: linux-next: build failure after merge of the perf tree

[Arnaldo Carvalho de Melo]

On Sat, Apr 13, 2024 at 12:43:40PM +1000, Stephen Rothwell wrote:
> Hi Arnaldo,
> 
> On Fri, 12 Apr 2024 12:22:07 -0300 Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> wrote:
> >
> > On Tue, Apr 02, 2024 at 09:41:16AM +1100, Stephen Rothwell wrote:
> > > Hi all,
> > > 
> > > After merging the perf tree, today's linux-next build (native i.e. ppc64le
> > > perf) failed like this:
> > > 
> > > make[3]: *** No rule to make target '/home/sfr/next/next/tools/include/uapi/linux/stat.h', needed by '/home/sfr/next/perf/libbpf/staticobjs/libbpf.o'.  Stop.  
> > 
> > How is this built? Using O=/home/sfr/next/perf?
> 
> Yes.  The actual command line is:
> 
> make -C tools/perf -f Makefile.perf -s -O -j60 O=/home/sfr/next/perf NO_BPF_SKEL=1
> 
> The source directory is /home/sfr/next/next.  This is a PowerPC 64 little endian
> build (on a PowerPC 64 little endian host).
> 
> OK, I just tested on my x86_64 laptop:
> (I started with a clone of Linus' current tree)

Ok, I did that sequence:

1. checkout torvalds/master
2. use the make command line above
3. git merge perf-tools-next
4. use the make command line above

And reproduced the problem, find below a patch that reverts the patch
that removes tools/include/uapi/linux/stat.h, with it applied in the
sequence above right after the merge of perf-tools-next it seems to
work, i.e. it builds without problems.

Can you please test this so that I can get it into perf-tools-next?

Thanks again for the report!

- Arnaldo