Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BD3DF21734
Date:   Mon, 5 Feb 2018 22:54:02 +0900
From:   Masami Hiramatsu <mhiramat@kernel.org>
To:     Pintu Kumar <pintu.ping@gmail.com>
Cc:     linux-kernel@vger.kernel.org, "Wangnan (F)" <wangnan0@huawei.com>,
        acme@redhat.com, quentin.monnet@netronome.com,
        daniel@iogearbox.net, davem@davemloft.net,
        alexander.shishkin@linux.intel.com, mingo@redhat.com,
        huawei.libin@huawei.com,
        Alexis Berlemont <alexis.berlemont@gmail.com>,
        maddy@linux.vnet.ibm.com, naveen.n.rao@linux.vnet.ibm.com,
        peterz@infradead.org, kernelnewbies@kernelnewbies.org
Subject: Re: [perf] perf test BPF fails on 4.9.20
Message-Id: <20180205225402.f0b2448650763bc5cb8099a8@kernel.org>
In-Reply-To: <CAOuPNLgnazHNKoMozZq7Ef=rEwRG=rwktsnp8jCKCD0gMH+hbg@mail.gmail.com>
References: <CAOuPNLiVQEroimgO1jhSdbyPAUvBtpA5-qscBY3N1yoNYpa82Q@mail.gmail.com>
        <CAOuPNLiropE67OWuh3mWzzN3q-8+UivKuNT+PU51aDoQwrJjNw@mail.gmail.com>
        <20180203221935.bd3036aba7637a4de391a20e@kernel.org>
        <CAOuPNLgnazHNKoMozZq7Ef=rEwRG=rwktsnp8jCKCD0gMH+hbg@mail.gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Mon, 5 Feb 2018 15:17:41 +0530
Pintu Kumar <pintu.ping@gmail.com> wrote:

> On Sat, Feb 3, 2018 at 6:49 PM, Masami Hiramatsu <mhiramat@kernel.org> wrote:
> > Hi Pintu,
> >
> > On Fri, 2 Feb 2018 19:03:30 +0530
> > Pintu Kumar <pintu.ping@gmail.com> wrote:
> >
> >> Hi All,
> >>
> >> I have fixed both the issue with perf test.
> >>
> >> 1) 16: Try 'import perf' in python, checking link problems      : FAILED!
> >> To fix this issue, I have to install:
> >> pip install --upgrade pip
> >> pip2.7 install perf
> >>
> >> 2) 37.2: Test BPF prologue generation                           : FAILED!
> >> To fix this issue I had to enable full version of CONFIG_DEBUG_INFO in kernel.
> >>
> >> Now, my question is:
> >> Is it possible to pass BPF test without enabling CONFIG_DEBUG_INFO in kernel ?
> >
> > It depends on what BPF test does, but it seems to access local vars. This means
> > you need to enable CONFIG_DEBUG_INFO. With debuginfo we can find the assignment
> > of register/stack for each local variable.
> >
> 
> OK. Thank you so much for your reply.
> I think we don't need BPF test at this time.
> Is it possible to disable/skip it ?

It depends on what you want to do with perf. If you don't use BPF, yes, you can
skip it :)

Thank you,

-- 
Masami Hiramatsu <mhiramat@kernel.org>