linux-kernel - Re: [PATCH v8 2/4] perf inject: add jitdump mmap injection support

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Date:	Fri, 22 Jan 2016 19:10:30 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Stephane Eranian <eranian@...gle.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	"mingo@...e.hu" <mingo@...e.hu>,
	"ak@...ux.intel.com" <ak@...ux.intel.com>,
	Jiri Olsa <jolsa@...hat.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Rose Belcher <cel@...ibm.com>,
	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>,
	Sonny Rao <sonnyrao@...omium.org>,
	John Mccutchan <johnmccutchan@...gle.com>,
	David Ahern <dsahern@...il.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Pawel Moll <pawel.moll@....com>
Subject: Re: [PATCH v8 2/4] perf inject: add jitdump mmap injection support

Em Fri, Jan 22, 2016 at 07:09:29PM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Fri, Jan 22, 2016 at 06:55:42PM -0300, Arnaldo Carvalho de Melo escreveu:
> > Em Fri, Jan 22, 2016 at 01:22:51PM -0800, Stephane Eranian escreveu:
> > > On Fri, Jan 22, 2016 at 12:44 PM, Arnaldo Carvalho de Melo
> > > > So, it fails 'make -C tools/perf build-test', specifically the one where
> > > > we ask for a NO_LIBELF build, trying to fix:
> 
> > > I have rebase to tip.git last night. Will try your branch today.
> > > Will add a couple of minor adjustments and also better documentation
> > > on how to use it.
> > 
> > Ok, but please work on top of my branch, that I'll push soon, for
> > instance, I had to fold the patch below, to fix the NO_LIBELF=1 case,
> > so, when one builds that way perf inject -h will say:
> > 
> > [acme@...et linux]$ tools/perf/perf inject -h
> > 
> >  Usage: perf inject [<options>]
> > 
> >     -j, --jit             merge jitdump files into perf.data file
> >                           (not built-in because NO_LIBELF=1)
> > 
> > [acme@...et linux]$ 
> > 
> > I did some other changes and carved out two bits into separate patches,
> > will soon push what I have to a perf/jit branch in my tree so that you
> > can take a look.
> 
> There, I just pushed it to:
> 
> git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git perf/jit
> 
> More specifically:
> 
> https://git.kernel.org/cgit/linux/kernel/git/acme/linux.git/commit/?h=perf/jit&id=0be8362109bb431e50bbc10d167fb2748c90ffb4
> 
> And the branch in gitweb:
> 
> https://git.kernel.org/cgit/linux/kernel/git/acme/linux.git/log/?h=perf/jit
> 
> Haven't looked at these yet:
> 
>  1907 N C 11/30 Stephane Erania ( 27K) ┌─>[PATCH v8 4/4] perf/jit: add source line info support
>  1908   C 11/30 Stephane Erania ( 20K) ├─>[PATCH v8 3/4] perf tools: add JVMTI agent library
> 
> Then I'll have to test them one by one, following your detailed
> instructions, thanks for that!

And, FYI, this branch is holding up so far:


[acme@...et linux]$ perf stat make -C tools/perf build-test
make: Entering directory '/home/acme/git/linux/tools/perf'
Testing Makefile
- make_tags: cd . && make -f Makefile   DESTDIR=/tmp/tmp.IzTl6vhMbZ tags
- make_no_libelf: cd . && make -f Makefile   DESTDIR=/tmp/tmp.PSI0yBKcc8 NO_LIBELF=1
- make_no_libnuma: cd . && make -f Makefile   DESTDIR=/tmp/tmp.VcfD5YNNRi NO_LIBNUMA=1
- make_no_libaudit: cd . && make -f Makefile   DESTDIR=/tmp/tmp.i4SdxuHf1t NO_LIBAUDIT=1
- make_no_backtrace: cd . && make -f Makefile   DESTDIR=/tmp/tmp.I3v5QmV8Nh NO_BACKTRACE=1
- make_no_libpython: cd . && make -f Makefile   DESTDIR=/tmp/tmp.fOCkt4C1FM NO_LIBPYTHON=1
- make_pure: cd . && make -f Makefile   DESTDIR=/tmp/tmp.TctwSew68Q 
- make_perf_o: cd . && make -f Makefile   DESTDIR=/tmp/tmp.iknvKKT2Kb perf.o
- make_debug: cd . && make -f Makefile   DESTDIR=/tmp/tmp.l3lwBXfwnz DEBUG=1
- make_no_libbpf: cd . && make -f Makefile   DESTDIR=/tmp/tmp.Ywr6DYlKsI NO_LIBBPF=1
- make_python_perf_so: cd . && make -f Makefile   DESTDIR=/tmp/tmp.ye9o7RStSb python/perf.so
- make_no_libunwind: cd . && make -f Makefile   DESTDIR=/tmp/tmp.tNz27kyNoW NO_LIBUNWIND=1
- make_util_map_o: cd . && make -f Makefile   DESTDIR=/tmp/tmp.JpfFPERI7A util/map.o
- make_no_newt: cd . && make -f Makefile   DESTDIR=/tmp/tmp.xU9UfQCceZ NO_NEWT=1
- make_install_prefix_slash: cd . && make -f Makefile   DESTDIR=/tmp/tmp.zmS2BuQqV6 install prefix=/tmp/krava/
- make_no_ui: cd . && make -f Makefile   DESTDIR=/tmp/tmp.iiop3KRzFG NO_NEWT=1 NO_SLANG=1 NO_GTK2=1
- make_no_demangle: cd . && make -f Makefile   DESTDIR=/tmp/tmp.A6Q5hlpmZ4 NO_DEMANGLE=1
- make_install_bin: cd . && make -f Makefile   DESTDIR=/tmp/tmp.m9d8Vq1ajF install-bin
- make_no_gtk2: cd . && make -f Makefile   DESTDIR=/tmp/tmp.JJdsy8pHNK NO_GTK2=1
- make_install: cd . && make -f Makefile   DESTDIR=/tmp/tmp.Sj2Xg4PitI install
- make_util_pmu_bison_o: cd . && make -f Makefile   DESTDIR=/tmp/tmp.wKGJJU3eyc util/pmu-bison.o
- make_no_libdw_dwarf_unwind: cd . && make -f Makefile   DESTDIR=/tmp/tmp.2182Tdx2VE NO_LIBDW_DWARF_UNWIND=1
- make_minimal: cd . && make -f Makefile   DESTDIR=/tmp/tmp.Q5ezRmcMm1 NO_LIBPERL=1 NO_LIBPYTHON=1 NO_NEWT=1 NO_GTK2=1 NO_DEMANGLE=1 NO_LIBELF=1 NO_LIBUNWIND=1 NO_BACKTRACE=1 NO_LIBNUMA=1 NO_LIBAUDIT=1 NO_LIBBIONIC=1 NO_LIBDW_DWARF_UNWIND=1 NO_AUXTRACE=1 NO_LIBBPF=1
- make_install_prefix: cd . && make -f Makefile   DESTDIR=/tmp/tmp.lyfQvxT5ix install prefix=/tmp/krava
- make_clean_all: cd . && make -f Makefile   DESTDIR=/tmp/tmp.nhRZPPng6t clean all
- make_help: cd . && make -f Makefile   DESTDIR=/tmp/tmp.R8qWp9kt22 help
- make_no_auxtrace: cd . && make -f Makefile   DESTDIR=/tmp/tmp.fNEq3tJ2KG NO_AUXTRACE=1
- make_static: cd . && make -f Makefile   DESTDIR=/tmp/tmp.9MvNcJxaVZ LDFLAGS=-static
- make_no_scripts: cd . && make -f Makefile   DESTDIR=/tmp/tmp.L2iW1bNMbb NO_LIBPYTHON=1 NO_LIBPERL=1
- make_no_libbionic: cd . && make -f Makefile   DESTDIR=/tmp/tmp.M3DA8x7ek1 NO_LIBBIONIC=1
- make_doc: cd . && make -f Makefile   DESTDIR=/tmp/tmp.mPzyUE4voE doc
- make_no_slang: cd . && make -f Makefile   DESTDIR=/tmp/tmp.w1T8U77HFl NO_SLANG=1
- make_no_libperl: cd . && make -f Makefile   DESTDIR=/tmp/tmp.T06LfKQxnS NO_LIBPERL=1
- make_doc_O: cd . && make -f Makefile  O=/tmp/tmp.r6w33h3LtW DESTDIR=/tmp/tmp.NHa0Rhy101 doc
- make_no_libbionic_O: cd . && make -f Makefile  O=/tmp/tmp.h8UfMSiZWb DESTDIR=/tmp/tmp.iQ5FPiVjUl NO_LIBBIONIC=1
- make_clean_all_O: cd . && make -f Makefile  O=/tmp/tmp.7tUqBFwxuC DESTDIR=/tmp/tmp.77k1WKoYsK clean all
- make_install_prefix_O: cd . && make -f Makefile  O=/tmp/tmp.tdnh6ul7op DESTDIR=/tmp/tmp.Gm7tzkZUSJ install prefix=/tmp/krava
- make_perf_o_O: cd . && make -f Makefile  O=/tmp/tmp.1Fae4o1h2s DESTDIR=/tmp/tmp.B8Nmjm2Wor perf.o
- make_no_libpython_O: cd . && make -f Makefile  O=/tmp/tmp.O9ATQ4Mjjt DESTDIR=/tmp/tmp.F7spQK99VU NO_LIBPYTHON=1
- make_no_newt_O: cd . && make -f Makefile  O=/tmp/tmp.7pT6bKzd7K DESTDIR=/tmp/tmp.egSS3beEh7 NO_NEWT=1
- make_util_pmu_bison_o_O: cd . && make -f Makefile  O=/tmp/tmp.giN3W13SYR DESTDIR=/tmp/tmp.S8hRxRWVnb util/pmu-bison.o
- make_no_slang_O: cd . && make -f Makefile  O=/tmp/tmp.E4NQ8vMPdt DESTDIR=/tmp/tmp.WQbb9Nyf7s NO_SLANG=1
- make_pure_O: cd . && make -f Makefile  O=/tmp/tmp.sL7RlaW7QZ DESTDIR=/tmp/tmp.iKuoNAvr3v