From: Jiri Olsa <jolsa@redhat.com>
To: Song Liu <songliubraving@fb.com>
Cc: open list <linux-kernel@vger.kernel.org>,
Kernel Team <Kernel-team@fb.com>,
Peter Ziljstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
"namhyung@kernel.org" <namhyung@kernel.org>
Subject: Re: [RFC 2/2] perf-stat: enable counting events for BPF programs
Date: Wed, 25 Nov 2020 17:42:36 +0100 [thread overview]
Message-ID: <20201125164236.GM2164284@krava> (raw)
In-Reply-To: <86F842B0-BF89-4418-BA2E-F93E50726A81@fb.com>
On Tue, Nov 24, 2020 at 11:31:49PM +0000, Song Liu wrote:
>
>
> > On Nov 23, 2020, at 3:47 PM, Jiri Olsa <jolsa@redhat.com> wrote:
>
> [...]
>
> >
> > I still need to review this deeply, but so far I'm getting this error:
> >
> > # ./perf stat -b 40
> > libbpf: elf: skipping unrecognized data section(9) .eh_frame
> > libbpf: elf: skipping relo section(15) .rel.eh_frame for section(9) .eh_frame
> > libbpf: XXX is not found in vmlinux BTF
> > libbpf: failed to load object 'bpf_prog_profiler_bpf'
> > libbpf: failed to load BPF skeleton 'bpf_prog_profiler_bpf': -2
> > libbpf: elf: skipping unrecognized data section(9) .eh_frame
> > libbpf: elf: skipping relo section(15) .rel.eh_frame for section(9) .eh_frame
> > libbpf: XXX is not found in vmlinux BTF
> > libbpf: failed to load object 'bpf_prog_profiler_bpf'
> > libbpf: failed to load BPF skeleton 'bpf_prog_profiler_bpf': -2
> > libbpf: elf: skipping unrecognized data section(9) .eh_frame
> > libbpf: elf: skipping relo section(15) .rel.eh_frame for section(9) .eh_frame
> > libbpf: XXX is not found in vmlinux BTF
> > libbpf: failed to load object 'bpf_prog_profiler_bpf'
> > libbpf: failed to load BPF skeleton 'bpf_prog_profiler_bpf': -2
> > libbpf: elf: skipping unrecognized data section(9) .eh_frame
> > libbpf: elf: skipping relo section(15) .rel.eh_frame for section(9) .eh_frame
> > libbpf: XXX is not found in vmlinux BTF
> > libbpf: failed to load object 'bpf_prog_profiler_bpf'
> > libbpf: failed to load BPF skeleton 'bpf_prog_profiler_bpf': -2
> > libbpf: elf: skipping unrecognized data section(9) .eh_frame
> > libbpf: elf: skipping relo section(15) .rel.eh_frame for section(9) .eh_frame
> > libbpf: XXX is not found in vmlinux BTF
> > libbpf: failed to load object 'bpf_prog_profiler_bpf'
> > libbpf: failed to load BPF skeleton 'bpf_prog_profiler_bpf': -2
> > libbpf: elf: skipping unrecognized data section(9) .eh_frame
> > libbpf: elf: skipping relo section(15) .rel.eh_frame for section(9) .eh_frame
> > libbpf: XXX is not found in vmlinux BTF
> > libbpf: failed to load object 'bpf_prog_profiler_bpf'
> > libbpf: failed to load BPF skeleton 'bpf_prog_profiler_bpf': -2
> > libbpf: elf: skipping unrecognized data section(9) .eh_frame
> > libbpf: elf: skipping relo section(15) .rel.eh_frame for section(9) .eh_frame
> > libbpf: XXX is not found in vmlinux BTF
> > libbpf: failed to load object 'bpf_prog_profiler_bpf'
> > libbpf: failed to load BPF skeleton 'bpf_prog_profiler_bpf': -2
> > libbpf: elf: skipping unrecognized data section(9) .eh_frame
> > libbpf: elf: skipping relo section(15) .rel.eh_frame for section(9) .eh_frame
> > libbpf: XXX is not found in vmlinux BTF
> > libbpf: failed to load object 'bpf_prog_profiler_bpf'
> > libbpf: failed to load BPF skeleton 'bpf_prog_profiler_bpf': -2
> > libbpf: Can't get the 0th fd from program fentry_XXX: only -1 instances
> > libbpf: prog 'fentry_XXX': can't attach before loaded
> > libbpf: failed to auto-attach program 'fentry_XXX': -22
>
> I cannot reproduce this. Is 40 a valid BPF program ID? Could you please share
> more information about it with "bpftool prog show id 40"?
it was bpftrace kfunc program, I'll try again and get back with
more details if there's still the problem
jirka
next prev parent reply other threads:[~2020-11-25 16:43 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-19 4:50 [RFC 0/2] Introduce perf-stat -b for BPF programs Song Liu
2020-11-19 4:50 ` [RFC 1/2] perf: support build BPF skeletons with perf Song Liu
2020-11-22 23:27 ` Jiri Olsa
2020-11-24 23:47 ` Song Liu
2020-11-25 16:38 ` Jiri Olsa
2020-11-22 23:32 ` Jiri Olsa
2020-11-24 23:51 ` Song Liu
2020-11-22 23:35 ` Jiri Olsa
2020-11-24 23:52 ` Song Liu
2020-11-25 16:40 ` Jiri Olsa
2020-11-24 19:51 ` Jiri Olsa
2020-11-24 23:59 ` Song Liu
2020-11-24 19:51 ` Jiri Olsa
2020-11-24 23:53 ` Song Liu
2020-11-19 4:50 ` [RFC 2/2] perf-stat: enable counting events for BPF programs Song Liu
2020-11-23 23:47 ` Jiri Olsa
2020-11-24 23:31 ` Song Liu
2020-11-25 16:42 ` Jiri Olsa [this message]
2020-11-24 19:51 ` Jiri Olsa
2020-11-24 23:43 ` Song Liu
2020-11-25 0:02 ` Song Liu
2020-11-25 16:43 ` Jiri Olsa
2020-11-19 14:52 ` [RFC 0/2] Introduce perf-stat -b " Arnaldo Carvalho de Melo
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