linux-toradex.git/tools/perf, branch v2.6.32.58

perf tools: do not look at ./config for configuration

2011-08-29T21:08:05+00:00

commit aba8d056078e47350d85b06a9cabd5afcc4b72ea upstream.

In addition to /etc/perfconfig and $HOME/.perfconfig, perf looks for
configuration in the file ./config, imitating git which looks at
$GIT_DIR/config.  If ./config is not a perf configuration file, it
fails, or worse, treats it as a configuration file and changes behavior
in some unexpected way.

"config" is not an unusual name for a file to be lying around and perf
does not have a private directory dedicated for its own use, so let's
just stop looking for configuration in the cwd.  Callers needing
context-sensitive configuration can use the PERF_CONFIG environment
variable.

Requested-by: Christian Ohm 
Cc: 632923@bugs.debian.org
Cc: Ben Hutchings 
Cc: Christian Ohm 
Cc: Ingo Molnar 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/20110805165838.GA7237@elie.gateway.2wire.net
Signed-off-by: Jonathan Nieder 
Signed-off-by: Arnaldo Carvalho de Melo 
Signed-off-by: Greg Kroah-Hartman

perf symbols: allow forcing use of cplus_demangle

2011-05-09T22:55:30+00:00

commit d11c7addfe0fa501cb54c824c0fac3481d527433 upstream.

For Fedora, I want to force perf to link against libiberty.a for
cplus_demangle, rather than libbfd.a for bfd_demangle due to licensing insanity
on binutils. (libiberty is LGPL2, libbfd is GPL3.)

If we just rely on autodetection, we'll end up with libbfd linked against us,
since they're both in binutils-static in the buildroot.

Cc: Ingo Molnar 
LKML-Reference: <20100510204335.GA7565@bombadil.infradead.org>
Signed-off-by: Kyle McMartin 
Signed-off-by: Arnaldo Carvalho de Melo 
Signed-off-by: Greg Kroah-Hartman

perf tools: Check if /dev/null can be used as the -o gcc argument

2011-05-09T22:55:29+00:00

commit 1703f2c321a8a531c393e137a82602e16c6061cb upstream.

At least on Debian PARISC64, using:

acme@parisc:~/git/linux-2.6-tip$ gcc -v
Using built-in specs.
Target: hppa-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian
4.3.4-6' --with-bugurl=file:///usr/share/doc/gcc-4.3/README.Bugs
--enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr
--enable-shared --enable-multiarch --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --enable-nls --with-gxx-include-dir=/usr/include/c++/4.3 --program-suffix=-4.3 --enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc --enable-mpfr --disable-libssp --enable-checking=release --build=hppa-linux-gnu --host=hppa-linux-gnu --target=hppa-linux-gnu Thread model: posix gcc version 4.3.4 (Debian 4.3.4-6)

there are issues about using 'gcc -o /dev/null':

/usr/bin/ld: final link failed: File truncated
collect2: ld returned 1 exit status

So we test that and use /dev/null in environments where it
works, while using an .INTERMEDIATE file on those where it can't
be used, so that the .perf.dev.null file can be used instead and
then deleted when make exits.

Researched-with: Kyle McMartin 
Researched-with: Mauro Carvalho Chehab 
Signed-off-by: Arnaldo Carvalho de Melo 
Cc: Frédéric Weisbecker 
Cc: Mike Galbraith 
Cc: Peter Zijlstra 
Cc: Paul Mackerras 
LKML-Reference: <1263293910-8484-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar 
[bwh: Backport to 2.6.32]
Signed-off-by: Greg Kroah-Hartman

perf tools: Move QUIET_STDERR def to before first use

2011-05-09T22:55:29+00:00

commit 830395188fae5f4028fa3c38ab1b031aae18a64c upstream.

QUIET_STDERR is used when detecting if -fstack-protector-all can
be used.

Noticed while building the perf tools on a Debian PARISC64
machine.

Signed-off-by: Arnaldo Carvalho de Melo 
Cc: Frédéric Weisbecker 
Cc: Mike Galbraith 
Cc: Peter Zijlstra 
Cc: Paul Mackerras 
LKML-Reference: <1263293910-8484-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar 
[bwh: Backport to 2.6.32]
Signed-off-by: Greg Kroah-Hartman

perf: Use default compiler mode by default

2011-05-09T22:55:29+00:00

commit 81516c5fc83a13a1d12f466aa7e14f5fd62a63ce upstream.

gcc with no flags typically is a sane default for systems to
use, and looking at the running kernel is probably broken for
cross-builds anyway, so let's not do this.  Add EXTRA_CFLAGS so
that users can override default gcc mode if they want to.

Signed-off-by: Michael S. Tsirkin 
Acked-by: Arjan van de Ven 
Cc: Peter Zijlstra 
Cc: Paul Mackerras 
Cc: Frederic Weisbecker 
Cc: Arnaldo Carvalho de Melo 
LKML-Reference: <20091122121335.GA24254@redhat.com>
Signed-off-by: Ingo Molnar 
[bwh: Backport to 2.6.32]
Signed-off-by: Greg Kroah-Hartman

perf tools: Suggest static libraries as well

2011-05-09T22:55:28+00:00

commit b197c7ef7169bd5f11fb9d803b322d0daef7e256 upstream.

On error, suggest installing static libraries
along with shared libraries.

Signed-off-by: Michael S. Tsirkin 
Cc: Peter Zijlstra 
Cc: Paul Mackerras 
Cc: Frederic Weisbecker 
Cc: Arnaldo Carvalho de Melo 
LKML-Reference: <20091122131311.GA24318@redhat.com>
Signed-off-by: Ingo Molnar 
[bwh: Backport to 2.6.32]
Signed-off-by: Greg Kroah-Hartman

perf tools: Add V=2 option to help debug config issues

2011-05-09T22:55:28+00:00

commit 7baed9af4bf0d7850045e36d19a43a2c76872b62 upstream.

Make standard error show up on console when V=2 is set.

Signed-off-by: Michael S. Tsirkin 
Cc: Peter Zijlstra 
Cc: Paul Mackerras 
Cc: Frederic Weisbecker 
Cc: Arnaldo Carvalho de Melo 
LKML-Reference: <20091122112726.GC13644@redhat.com>
Signed-off-by: Ingo Molnar 
[bwh: Backport to 2.6.32]
Signed-off-by: Greg Kroah-Hartman

perf tools: Support static build

2011-05-09T22:55:27+00:00

commit 751386507701010831d72c522171753d2cd903d2 upstream.

This makes it possible to build perf statically, by
performing:

  make LDFLAGS=-static

Since static libraries are only searched in the order they are
specified, move library list from LDFLAGS to EXTLIBS, so that
they are put at the end of linker command line.

Signed-off-by: Michael S. Tsirkin 
Cc: Peter Zijlstra 
Cc: Paul Mackerras 
Cc: Frederic Weisbecker 
Cc: Arnaldo Carvalho de Melo 
LKML-Reference: <20091029152002.GA5406@redhat.com>
[ v2: resolved conflicts ]
Signed-off-by: Ingo Molnar 
[bwh: Backport to 2.6.32]
Signed-off-by: Greg Kroah-Hartman

perf tools: Test -fstack-protector-all compiler option for inclusion in CFLAGS

2011-05-09T22:55:27+00:00

commit 5d7bdab75cd56d2bdc0986ae5546be3b09fea70a upstream.

Some architectures (e.g. Alpha) do not support the
-fstack-protector-all compiler option and the use of the option
with -Werror causes the compiler to abort and the build fails.

Test that the compiler supports -fstack-protector-all before
inclusion in CFLAGS.

Signed-off-by: Michael Cree 
Cc: Richard Henderson 
Cc: Ivan Kokshaysky 
Cc: Peter Zijlstra 
Cc: Paul Mackerras 
LKML-Reference: <20091111074302.GA3728@omega>
Signed-off-by: Ingo Molnar 
[bwh: Backport to 2.6.32]
Signed-off-by: Greg Kroah-Hartman

perf tools: Add 'make DEBUG=1' to remove the -O6 cflag

2011-05-09T22:55:26+00:00

commit 60d526f7fa6246b8e32d5b45610d625a5608d988 upstream.

When using gdb to debug perf, it is practically impossible to
use when perf is compiled with -O6. For developers, this patch
adds the DEBUG feature to the make command line so that a
developer can easily remove the optimization flag.

LKML-Reference: <1255590330.8392.446.camel@twins>
Signed-off-by: Steven Rostedt 
Cc: Peter Zijlstra 
Cc: Frederic Weisbecker 
Cc: Arnaldo Carvalho de Melo 
LKML-Reference: <20091020232033.984323261@goodmis.org>
Signed-off-by: Ingo Molnar 
[bwh: Backport to 2.6.32]
Signed-off-by: Greg Kroah-Hartman