netdev - Re: [PATCH 17/18] perf tools: Set ksymbol dso as loaded on arrival

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Message-ID: <20200228131523.GB4010@redhat.com>
Date:   Fri, 28 Feb 2020 10:15:23 -0300
From:   Arnaldo Carvalho de Melo <acme@...hat.com>
To:     Jiri Olsa <jolsa@...nel.org>
Cc:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>, netdev@...r.kernel.org,
        bpf@...r.kernel.org, Andrii Nakryiko <andriin@...com>,
        Yonghong Song <yhs@...com>, Song Liu <songliubraving@...com>,
        Martin KaFai Lau <kafai@...com>,
        Jakub Kicinski <kuba@...nel.org>,
        David Miller <davem@...hat.com>,
        Björn Töpel <bjorn.topel@...el.com>,
        John Fastabend <john.fastabend@...il.com>,
        Jesper Dangaard Brouer <hawk@...nel.org>
Subject: Re: [PATCH 17/18] perf tools: Set ksymbol dso as loaded on arrival

Em Wed, Feb 26, 2020 at 02:03:44PM +0100, Jiri Olsa escreveu:
> There's no special load action for ksymbol data on
> map__load/dso__load action, where the kernel is getting
> loaded. It only gets confused with kernel kallsyms/vmlinux
> load for bpf object, which fails and could mess up with
> the map.
> 
> Disabling any further load of the map for ksymbol related dso/map.

Acked-by: Arnaldo Carvalho de Melo <acme@...hat.com>
 
> Signed-off-by: Jiri Olsa <jolsa@...nel.org>
> ---
>  tools/perf/util/machine.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
> index fb5c2cd44d30..463ada5117f8 100644
> --- a/tools/perf/util/machine.c
> +++ b/tools/perf/util/machine.c
> @@ -742,6 +742,7 @@ static int machine__process_ksymbol_register(struct machine *machine,
>  		map->start = event->ksymbol.addr;
>  		map->end = map->start + event->ksymbol.len;
>  		maps__insert(&machine->kmaps, map);
> +		dso__set_loaded(dso);
>  	}
>  
>  	sym = symbol__new(map->map_ip(map, map->start),
> -- 
> 2.24.1