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

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Date:   Fri, 5 Nov 2021 21:19:10 -0700
From:   Denis Nikitin <denik@...omium.org>
To:     James Clark <james.clark@....com>
Cc:     acme@...nel.org, 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

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

>                 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>