From: Masami Hiramatsu <mhiramat@kernel.org>
To: Pintu Kumar <pintu.ping@gmail.com>
Cc: "Wangnan \(F\)" <wangnan0@huawei.com>,
Alexis Berlemont <alexis.berlemont@gmail.com>,
daniel@iogearbox.net, kernelnewbies@kernelnewbies.org,
alexander.shishkin@linux.intel.com, linux-kernel@vger.kernel.org,
acme@redhat.com, peterz@infradead.org, mingo@redhat.com,
huawei.libin@huawei.com, naveen.n.rao@linux.vnet.ibm.com,
quentin.monnet@netronome.com, maddy@linux.vnet.ibm.com,
davem@davemloft.net
Subject: Re: [perf] perf test BPF fails on 4.9.20
Date: Mon, 5 Feb 2018 22:54:02 +0900 [thread overview]
Message-ID: <20180205225402.f0b2448650763bc5cb8099a8@kernel.org> (raw)
In-Reply-To: <CAOuPNLgnazHNKoMozZq7Ef=rEwRG=rwktsnp8jCKCD0gMH+hbg@mail.gmail.com>
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>
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next prev parent reply other threads:[~2018-02-05 13:54 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-02 7:55 [perf] perf test BPF fails on 4.9.20 Pintu Kumar
2018-02-02 13:33 ` Pintu Kumar
2018-02-03 13:19 ` Masami Hiramatsu
2018-02-05 9:47 ` Pintu Kumar
2018-02-05 13:54 ` Masami Hiramatsu [this message]
2018-02-05 17:06 ` Pintu Kumar
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