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

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Message-ID: <20150721114151.GF5368@kernel.org>
Date:	Tue, 21 Jul 2015 08:41:51 -0300
From:	Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
To:	"Wangnan (F)" <wangnan0@...wei.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
Subject: Re: perf test LLVM was: Re: [GIT PULL 00/39] perf tools: filtering
 events using eBPF programs

Em Tue, Jul 21, 2015 at 07:09:12PM +0800, Wangnan (F) escreveu:
> Hi Arnaldo,
> 
> Have you recovered from your cold?

Much better now, thanks.
 
> 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.

Ok, saw that 12/39 repost, will pick it
 
> 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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