On Thu, 2012-02-16 at 19:57 +0100, Joerg Roedel wrote:
> Also build a linux-tools package for installation so that
> common tools run without issues (e.g. perf).
>
> [RFC note: This may break with x-compilation when the
> x-compilation environment is not set up to
> compile user-space programs. Is that acceptable?
> I also thought about a compile-time parameter
> such as 'make TOOLS=1 deb-pkg' or a special
> 'make deb-tools-pkg' target. Opinions? ]
>
> Cc: Michal Marek <mmarek@suse.cz>
> Cc: maximilian attems <max@stro.at>
> Cc: Ben Hutchings <ben@decadent.org.uk>
> Cc: debian-kernel@lists.debian.org
> Cc: linux-kbuild@vger.kernel.org
> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
> ---
> scripts/package/builddeb | 55 +++++++++++++++++++++++++++++++++++++++++++++-
> 1 files changed, 54 insertions(+), 1 deletions(-)
>
> diff --git a/scripts/package/builddeb b/scripts/package/builddeb
> index eee5f8e..8466380 100644
> --- a/scripts/package/builddeb
> +++ b/scripts/package/builddeb
> @@ -78,17 +78,19 @@ tmpdir="$objtree/debian/tmp"
> fwdir="$objtree/debian/fwtmp"
> kernel_headers_dir="$objtree/debian/hdrtmp"
> libc_headers_dir="$objtree/debian/headertmp"
> +tools_dir="$objtree/debian/toolstmp"
> packagename=linux-image-$version
> fwpackagename=linux-firmware-image
> kernel_headers_packagename=linux-headers-$version
> libc_headers_packagename=linux-libc-dev
> +tools_packagename=linux-tools-$version
The advice I got from one of the perf developers - possibly Peter
Zijlstra - was that changes to the perf kernel interface are backward-
compatible but newer versions of the perf tool may depend on newer
kernel features. New features involve a bump to the 2nd (at the time,
it was the 3rd) version component unless you're building from a perf
development branch.
So to avoid package proliferation the package name should be
linux-tools-$VERSION.$PATCHLEVEL and the executable filenames should be
something like perf_$VERSION.$PATCHLEVEL-$subcommand. This is what we
do in Debian.
However, Ubuntu uses the full kernel release string (as do several
RPM-based distributions). So at the moment you can't build a versioned
perf that's going to work in both. But that is fixable if one of the
perf wrappers is changed to fall back to the alternate naming scheme.
[...]
> +# Build the tools
> +num_tools="0"
> +tools_flavour_abi=${version#*-}
> +tools_flavour=${tools_flavour_abi#*-}
> +tools_version=${version%-$tools_flavour}
> +if grep -q '^CONFIG_PERF_EVENTS=y' .config ; then
> + # Build perf
> + (
> + mkdir -p $objtree/tools/perf
> + cd "$srctree/tools/perf"
> + $MAKE LDFLAGS= O=$O/tools/perf
> + cp $objtree/tools/perf/perf "$tools_dir/usr/bin/perf_$tools_version"
[...]
What about the manual pages and scripting support?
Ben.
--
Ben Hutchings
Beware of programmers who carry screwdrivers. - Leonard Brandwein
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