linux-kernel - Re: [PATCH v1 01/18] gen_compile_commands: Allow the line prefix to still be cmd

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Message-ID: <CAK7LNASuOWtd-iv2C3HLWr1oq9gD8BiP4B=8wRUo81CSK=g5Yw@mail.gmail.com>
Date:   Tue, 3 Oct 2023 23:31:17 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Nicolas Schier <nicolas@...sle.eu>
Cc:     Ian Rogers <irogers@...gle.com>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Nathan Chancellor <nathan@...nel.org>,
        Tom Rix <trix@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Yicong Yang <yangyicong@...ilicon.com>,
        Jonathan Cameron <jonathan.cameron@...wei.com>,
        Yang Jihong <yangjihong1@...wei.com>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Ming Wang <wangming01@...ngson.cn>,
        Huacai Chen <chenhuacai@...nel.org>,
        Sean Christopherson <seanjc@...gle.com>,
        K Prateek Nayak <kprateek.nayak@....com>,
        Yanteng Si <siyanteng@...ngson.cn>,
        Yuan Can <yuancan@...wei.com>,
        Ravi Bangoria <ravi.bangoria@....com>,
        James Clark <james.clark@....com>,
        Paolo Bonzini <pbonzini@...hat.com>, llvm@...ts.linux.dev,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        bpf@...r.kernel.org
Subject: Re: [PATCH v1 01/18] gen_compile_commands: Allow the line prefix to
 still be cmd_

On Thu, Sep 28, 2023 at 11:26 PM Nicolas Schier <nicolas@...sle.eu> wrote:
>
> On Mon, 25 Sep 2023 09:06:11 -0700, Ian Rogers wrote:
> > On Mon, Sep 25, 2023 at 8:49 AM Nick Desaulniers
> > <ndesaulniers@...gle.com> wrote:
> > >
> > > On Fri, Sep 22, 2023 at 10:35 PM Ian Rogers <irogers@...gle.com> wrote:
> > > >
> > > > Builds in tools still use the cmd_ prefix in .cmd files, so don't
> > > > require the saved part. Name the groups in the line pattern match so
> > >
> > > Is that something that can be changed in the tools/ Makefiles?
> > >
> > > I'm fine with this change, just curious where the difference comes
> > > from precisely.
> > > Reviewed-by: Nick Desaulniers <ndesaulniers@...gle.com>
> >
> > I agree. The savedcmd_ change came from Masahiro in:
> > https://lore.kernel.org/lkml/20221229091501.916296-1-masahiroy@kernel.org/
> > I was reluctant to change the build logic in tools/ because of the
> > potential to break things. Maybe Masahiro/Nicolas know of issues?
>
> I haven't seen any issues related to the introduction of savedcmd_; and
> roughly searching through tools/ I cannot find a rule that matches the
> pattern Masahiro described in commit 92215e7a801d ("kbuild: rename
> cmd_$@ to savedcmd_$@ in *.cmd files", 2022-12-29).  For consistency,
> I'd like to see the build rules in tools/ re-use the ones from scripts/
> but as of now I don't see any necessity to introduce savedcmd in
> tools/, yet.
>
> Kind regards,
> Nicolas


tools/build/Build.include mimics scripts/Kbuild.include

That should be changed in the same way.


-- 
Best Regards
Masahiro Yamada