linux-kernel - Re: [PATCH 07/12] perf tools: Check maps for bpf programs

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Date:   Tue, 16 Apr 2019 16:31:09 -0300
From:   Arnaldo Carvalho de Melo <acme@...hat.com>
To:     Jiri Olsa <jolsa@...nel.org>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Andrii Nakryiko <andrii.nakryiko@...il.com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Martin KaFai Lau <kafai@...com>,
        Namhyung Kim <namhyung@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 07/12] perf tools: Check maps for bpf programs

Em Tue, Apr 16, 2019 at 06:01:22PM +0200, Jiri Olsa escreveu:
> From: Song Liu <songliubraving@...com>
> 
> As reported by Jiri Olsa in:
> 
>   "[BUG] perf: intel_pt won't display kernel function"
>   https://lore.kernel.org/lkml/20190403143738.GB32001@krava
> 
> Recent changes to support PERF_RECORD_KSYMBOL and PERF_RECORD_BPF_EVENT
> broke --kallsyms option. This is because it broke test __map__is_kmodule.
> 
> This patch fixes this by adding check for bpf program, so that these maps
> are not mistaken as kernel modules.

Thanks, applied to perf/urgent.

- Arnaldo