perf

#!/bin/bash
full_version=`uname -r`

#Edited/modified from Debian perf wrapper, which fails badly in a
#Docker environment with mismatched host/container distros.  We need
#to run properly on top of RH style hosts, and the perf interfaces we
#need will translate just fine to nearby generic linux-tool versions.
#Be permissive in matching.

# First check for a fully qualified version.
this="/usr/lib/linux-tools/$full_version/`basename $0`"
if [ -f "$this" ]; then
	exec "$this" "$@"
fi

# Next, try Removing flavour from version i.e. generic or server.
flavour_abi=${full_version#*-}
flavour=${flavour_abi#*-}
version=${full_version%-$flavour}
this="$0_$version"
if [ -f "$this" ]; then
	exec "$this" "$@"
fi

# Next, look for generic near matches
minor_plus=${full_version#*.}
subminor_plus=${minor_plus#*.}
flavor_plus=${subminor_plus#*[. -]}
majorminor=${full_version%.$subminor_plus}
majorminorsub=${full_version%[. -]$flavor_plus}

# Check for generic version(s) matching major/minor/sub
this=( /usr/lib/linux-tools/$majorminorsub*generic/`basename $0` )
if [ -f "$this" ]; then
	exec "$this" "$@"
fi

## Check for generic version(s) matching major/minor
this=( /usr/lib/linux-tools/$majorminor*generic/`basename $0` )
if [ -f "$this" ]; then
	exec "$this" "$@"
fi

# back to your regularly scheduled Debian wrapper
# Before saucy kernels we had no flavour linkage.
if dpkg --compare-versions "$version" lt "3.11.0"; then
	flavour=''
else
	flavour="-$flavour"
fi
# Hint at the cloud tools if they exist (trusty and later)
if dpkg --compare-versions "$version" ge "3.13.0"; then
	cld=""
else
	cld=":"
fi
# Work out if this is an LTS backport or not.
codename=`lsb_release -cs`
case "$codename" in
precise)	base='3.2.0-9999' ;;
trusty)		base='3.13.0-9999' ;;
*)		base='' ;;
esac
std=""
lts=":"
if [ "$base" != "" ]; then
	if dpkg --compare-versions "$version" gt "$base"; then
		std=":"
		lts=""
	fi
fi

# Give them a hint as to what to install.
		echo "WARNING: `basename $0` not found for kernel $version" >&2
		echo "" >&2
		echo "  You may need to install the following packages for this specific kernel:" >&2
		echo "    linux-tools-$version$flavour" >&2
$cld		echo "    linux-cloud-tools-$version$flavour" >&2
		echo "" >&2
		echo "  You may also want to install one of the following packages to keep up to date:" >&2
$std		echo "    linux-tools$flavour" >&2
$std $cld	echo "    linux-cloud-tools$flavour" >&2
$lts		echo "    linux-tools$flavour-lts-<series>" >&2
$lts $cld	echo "    linux-cloud-tools$flavour-lts-<series>" >&2

exit 2