netdev - Re: [PATCH] perf tools: Do not use deprecated bpf_program_

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Message-ID: <20200907110549.GI1199773@krava>
Date:   Mon, 7 Sep 2020 13:05:49 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     Jiri Olsa <jolsa@...nel.org>,
        Arnaldo Carvalho de Melo <acme@...hat.com>
Cc:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>, netdev@...r.kernel.org,
        bpf@...r.kernel.org, Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        Andrii Nakryiko <andriin@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...omium.org>,
        Jesper Dangaard Brouer <brouer@...hat.com>
Subject: Re: [PATCH] perf tools: Do not use deprecated bpf_program__title

On Mon, Sep 07, 2020 at 01:02:37PM +0200, Jiri Olsa wrote:
> The bpf_program__title function got deprecated in libbpf,
> use the suggested alternative.
> 
> Fixes: 521095842027 ("libbpf: Deprecate notion of BPF program "title" in favor of "section name"")
> Signed-off-by: Jiri Olsa <jolsa@...nel.org>

Arnaldo,
the commit in 'Fixes' is not yet in your tree yet and the patch
below will make the perf compilation fail in your perf/core..

it fixes perf compilation on top of bpf-next tree.. so I think it
should go in through bpf-next tree

thanks,
jirka

> ---
>  tools/perf/util/bpf-loader.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/tools/perf/util/bpf-loader.c b/tools/perf/util/bpf-loader.c
> index 2feb751516ab..73de3973c8ec 100644
> --- a/tools/perf/util/bpf-loader.c
> +++ b/tools/perf/util/bpf-loader.c
> @@ -328,7 +328,7 @@ config_bpf_program(struct bpf_program *prog)
>  	probe_conf.no_inlines = false;
>  	probe_conf.force_add = false;
>  
> -	config_str = bpf_program__title(prog, false);
> +	config_str = bpf_program__section_name(prog);
>  	if (IS_ERR(config_str)) {
>  		pr_debug("bpf: unable to get title for program\n");
>  		return PTR_ERR(config_str);
> @@ -454,7 +454,7 @@ preproc_gen_prologue(struct bpf_program *prog, int n,
>  	if (err) {
>  		const char *title;
>  
> -		title = bpf_program__title(prog, false);
> +		title = bpf_program__section_name(prog);
>  		if (!title)
>  			title = "[unknown]";
>  
> -- 
> 2.26.2
>