linux-kernel - Re: perf test LLVM was: Re: [GIT PULL 00/39] perf tools: filtering events using eBPF programs

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Date:	Tue, 21 Jul 2015 19:09:12 +0800
From:	"Wangnan (F)" <wangnan0@...wei.com>
To:	Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
CC:	He Kuang <hekuang@...wei.com>, Li Zefan <lizefan@...wei.com>,
	<ast@...mgrid.com>, <pi3orama@....com>, <xiakaixu@...wei.com>,
	<linux-kernel@...r.kernel.org>,
	Arnaldo Carvalho de Melo <acme@...nel.org>
Subject: Re: perf test LLVM was: Re: [GIT PULL 00/39] perf tools: filtering
 events using eBPF programs

Hi Arnaldo,

Have you recovered from your cold?

Could you please repick patch "perf tools: Introduce llvm config options"
from my github:

https://github.com/WangNan0/linux/commit/f9fb25c518c7e52a47e98c36ce49f51051bbccf4

I made a small change that introduce '-D__KERNEL__' in front of 
$CLANG_OPTIONS,
so samples in 'samples/ebpf' should be compilable with perf now.

I'll repost a patch by replying the original one also.

The following changes since commit 101ef9b4f5c70dbfffa0186102c1014bd81a4ec7:

   bpf tools: Link all bpf objects onto a list (2015-07-13 18:48:17 -0300)

are available in the git repository at:

   https://github.com/WangNan0/linux.git ebpf

for you to fetch changes up to 51f169df1d11ea842a808d751f9c620371c55e74:

   bpf: Introduce function for outputing data to perf event (2015-07-21 
10:55:48 +0000)

----------------------------------------------------------------

Thank you.


On 2015/7/17 11:48, Arnaldo Carvalho de Melo wrote:
>
> On Jul 16, 2015 11:34 PM, "Wangnan (F)" <wangnan0@...wei.com 
> <mailto:wangnan0@...wei.com>> wrote:
> > On 2015/7/15 19:20, Arnaldo Carvalho de Melo wrote:
> >>
> >> Em Wed, Jul 15, 2015 at 06:49:40PM +0800, Wangnan (F) escreveu:
> >>>
> >>> On 2015/7/14 23:36, Arnaldo Carvalho de Melo wrote:
> >>>>
> >>>> I have the trees cloned and plan to follow these instructions to 
> have this test
> >>>> passing, to then move on to the next patches, but one request, 
> please change
> >>>> the above to produce:
> >>>> 38: Test LLVM searching and compiling               :(no clang) 
> Ok     run 'perf test -v LLVM' for instructions on having a clang 
> environment
> >>>
> >>> The output format you desire is hard to implement, because 'Ok' is 
> printed
> >>> by the parent process. We have to find a way to allow child 
> process to pass
> >>> 'run 'perf test -v LLVM' for ...' to parent, then parent can print it
> >>> after 'Ok'.
> >>
> >>
> >>>
> >>> I change this test as follow:
> >>
> >>  From a quick look: excellent, thanks for improving this, I downloaded
> >> llvm and clang, built it, and the test passes, will apply this new 
> patch
> >> and continue from there,
> >>
> >> - Arnaldo
> >
> >
> > Hi Arnaldo,
> >
> > What's the reviewing going on?
>
> Was sidetracked with some other stuff and was a bit slow due to a 
> cold, hope to get back to work on ebpf+perf in 8 hours ir so.
>
> Thanks,
>
> Arnaldo
>
> > I collected some more patches on my git tree to avoid losting, and 
> will collect more on it.
> > I'll keep this patchset at the bottom so I think you shoud not be 
> affected.
> >
> > Here is the new branch:
> >
> > https://github.com/WangNan0/linux.git ebpf
> >
> > Do you want me to keep the original perf/ebpf-for-acme branch?
> >
> > Thank you.
> >
> >
>


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