linux-kernel - Re: linux-next: build failure after merge of the perf tree

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Message-ID: <20220112084553.2aa71f08@canb.auug.org.au>
Date:   Wed, 12 Jan 2022 08:45:53 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
Cc:     kajoljain <kjain@...ux.ibm.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the perf tree

Hi all,

On Fri, 7 Jan 2022 14:28:37 +0530 kajoljain <kjain@...ux.ibm.com> wrote:
>
> On 1/6/22 3:49 AM, Stephen Rothwell wrote:
> > 
> > After merging the perf tree, today's linux-next build (powerpc
> > ppc64_defconfig) failed like this:
> > 
> > In file included from include/linux/perf_event.h:17,
> >                  from arch/powerpc/perf/isa207-common.h:12,
> >                  from arch/powerpc/perf/isa207-common.c:9:
> > arch/powerpc/perf/isa207-common.c: In function 'isa207_find_source':
> > include/uapi/linux/perf_event.h:1339:11: error: 'PERF_MEM_HOPS_2' undeclared (first use in this function); did you mean 'PERF_MEM_HOPS_0'?
> >  1339 |  (((__u64)PERF_MEM_##a##_##s) << PERF_MEM_##a##_SHIFT)
> >       |           ^~~~~~~~~
> > arch/powerpc/perf/isa207-common.h:273:20: note: in expansion of macro 'PERF_MEM_S'
> >   273 | #define P(a, b)    PERF_MEM_S(a, b)
> >       |                    ^~~~~~~~~~
> > arch/powerpc/perf/isa207-common.c:240:51: note: in expansion of macro 'P'
> >   240 |     ret |= PH(LVL, REM_RAM1) | REM | LEVEL(RAM) | P(HOPS, 2);
> >       |                                                   ^
> > include/uapi/linux/perf_event.h:1339:11: note: each undeclared identifier is reported only once for each function it appears in
> >  1339 |  (((__u64)PERF_MEM_##a##_##s) << PERF_MEM_##a##_SHIFT)
> >       |           ^~~~~~~~~
> > arch/powerpc/perf/isa207-common.h:273:20: note: in expansion of macro 'PERF_MEM_S'
> >   273 | #define P(a, b)    PERF_MEM_S(a, b)
> >       |                    ^~~~~~~~~~
> > arch/powerpc/perf/isa207-common.c:240:51: note: in expansion of macro 'P'
> >   240 |     ret |= PH(LVL, REM_RAM1) | REM | LEVEL(RAM) | P(HOPS, 2);
> >       |                                                   ^
> > include/uapi/linux/perf_event.h:1339:11: error: 'PERF_MEM_HOPS_3' undeclared (first use in this function); did you mean 'PERF_MEM_HOPS_0'?
> >  1339 |  (((__u64)PERF_MEM_##a##_##s) << PERF_MEM_##a##_SHIFT)
> >       |           ^~~~~~~~~
> > arch/powerpc/perf/isa207-common.h:273:20: note: in expansion of macro 'PERF_MEM_S'
> >   273 | #define P(a, b)    PERF_MEM_S(a, b)
> >       |                    ^~~~~~~~~~
> > arch/powerpc/perf/isa207-common.c:244:51: note: in expansion of macro 'P'
> >   244 |     ret |= PH(LVL, REM_RAM2) | REM | LEVEL(RAM) | P(HOPS, 3);
> >       |                                                   ^
> > 
> > Caused by commit
> > 
> >   af2b24f228a0 ("perf powerpc: Add data source encodings for power10 platform")
> > 
> > It looks like patch 1/4 of this series is missing ...  
> 
> Hi Stephen,
>      Yes you are right, original patch series contain 4 patches, where
> 1/4 patch contain kernel side changes for the same. Hence we are getting
> this error, as that patch is missing in the Arnaldo tree.
> 
> Link to the patchset: https://lkml.org/lkml/2021/12/6/143
> 
> That kernel side patch is taken by Michael Ellermen via powerpc git.
> 
> Link to the patchset on powerpc/next:
> 
> [1/4] perf: Add new macros for mem_hops field
> https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id=cb1c4aba055f928ffae0c868e8dfe08eeab302e7
> 
> 
> [3/4] powerpc/perf: Add encodings to represent data based on newer
> composite PERF_MEM_LVLNUM* fields
>  https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id=4a20ee106154ac1765dea97932faad29f0ba57fc
> 
> [4/4] powerpc/perf: Add data source encodings for power10 platform
> https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id=6ed05a8efda56e5be11081954929421de19cce88
> 
> Thanks,
> Kajol Jain
> 
> > 
> > I have used the perf tree from next-20220105 for today.
> >   

I am still getting this build failure.

-- 
Cheers,
Stephen Rothwell

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