linux-kernel - Re: [PATCH 3/3] perf inject: Add vmlinux and ignore-vmlinux arguments

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Date:   Sat, 6 Nov 2021 16:53:02 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Denis Nikitin <denik@...omium.org>
Cc:     James Clark <james.clark@....com>,
        linux-perf-users@...r.kernel.org,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] perf inject: Add vmlinux and ignore-vmlinux arguments

Em Fri, Nov 05, 2021 at 09:19:10PM -0700, Denis Nikitin escreveu:
> On Mon, Oct 18, 2021 at 6:49 AM James Clark <james.clark@....com> wrote:
> >
> > Other perf tools allow specifying the path to vmlinux. Perf inject
> > didn't have this argument which made some auxtrace workflows difficult.
> >
> > Also add ignore-vmlinux for consistency with other tools.
> >
> > Suggested-by: Denis Nitikin <denik@...omium.org>
> > Signed-off-by: James Clark <james.clark@....com>
> > ---
> >  tools/perf/builtin-inject.c | 7 +++++++
> >  1 file changed, 7 insertions(+)
> >
> > diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c
> > index 6ad191e731fc..4261ad89730f 100644
> > --- a/tools/perf/builtin-inject.c
> > +++ b/tools/perf/builtin-inject.c
> > @@ -938,6 +938,10 @@ int cmd_inject(int argc, const char **argv)
> >  #endif
> >                 OPT_INCR('v', "verbose", &verbose,
> >                          "be more verbose (show build ids, etc)"),
> > +               OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
> > +                          "file", "vmlinux pathname"),
> > +               OPT_BOOLEAN(0, "ignore-vmlinux", &symbol_conf.ignore_vmlinux,
> > +                           "don't load vmlinux even if found"),
> 
> I think we also need to update documentation at Documentation/perf-inject.txt

I can replicate what is in 'perf report' where this came from, will do
it now.
 
> >                 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name, "file",
> >                            "kallsyms pathname"),
> >                 OPT_BOOLEAN('f', "force", &data.force, "don't complain, do it"),
> > @@ -972,6 +976,9 @@ int cmd_inject(int argc, const char **argv)
> >                 return -1;
> >         }
> >
> > +       if (symbol__validate_sym_arguments())
> > +               return -1;
> > +
> >         if (inject.in_place_update) {
> >                 if (!strcmp(inject.input_name, "-")) {
> >                         pr_err("Input file name required for in-place updating\n");
> > --
> > 2.28.0
> >
> 
> Tested-by: Denis Nikitin <denik@...omium.org>

Thanks,

- Arnaldo