recipes-kernel: make perf a standalone package

perf has been coupled to the kernel packages via kernel.bbclass.
While maintaining the build of perf out of the kernel source tree
is desired the package coupling has proved to be awkward in
several situations such as:

  - when a kernel recipe doesn't want to build/provide perf
  - when licensing of dependencies would prohibit perf and hence
    the kernel from being built.

To solve some of these problems, this recipe is the extraction of
the linux-tools.inc provided perf compilation into a standalone
perf recipe that builds out of the kernel source, but is otherwise
independent.

No new functionality is provided above what the linux-tools.inc
variant provided, but the separate recipe provides baseline for
adding new functionality.

Signed-off-by: Liang Li <liang.li@windriver.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/classes/kernel.bbclass b/meta/classes/kernel.bbclass
index a80ef9c0a8cf4f12303972bba4460884af904e47..31e633b812d56078862bc1130dbf7384c3b3d6a0 100644 (file)
--- a/meta/classes/kernel.bbclass
+++ b/meta/classes/kernel.bbclass
@@ -469,7 +469,7 @@ python populate_packages_prepend () {
        metapkg = "kernel-modules"
        d.setVar('ALLOW_EMPTY_' + metapkg, "1")
        d.setVar('FILES_' + metapkg, "")
-       blacklist = [ 'kernel-dev', 'kernel-image', 'kernel-base', 'kernel-vmlinux', 'perf', 'perf-dbg', 'kernel-misc' ]
+       blacklist = [ 'kernel-dev', 'kernel-image', 'kernel-base', 'kernel-vmlinux', 'kernel-misc' ]
        for l in module_deps.values():
                for i in l:
                        pkg = module_pattern % legitimize_package_name(re.match(module_regex, os.path.basename(i)).group(1))
@@ -548,8 +548,3 @@ addtask deploy before do_build after do_install
 
 EXPORT_FUNCTIONS do_deploy
 
-# perf must be enabled in individual kernel recipes
-PACKAGES =+ "perf-dbg perf"
-FILES_perf = "${bindir}/* \
-              ${libexecdir}"
-FILES_perf-dbg = "${FILES_${PN}-dbg}"

diff --git a/meta/recipes-kernel/perf/perf_3.4.bb b/meta/recipes-kernel/perf/perf_3.4.bb
new file mode 100644 (file)
index 0000000..997beb4
--- /dev/null
+++ b/meta/recipes-kernel/perf/perf_3.4.bb
@@ -0,0 +1,50 @@
+SUMMARY = "Performance analysis tools for Linux"
+DESCRIPTION = "Performance counters for Linux are a new kernel-based \
+subsystem that provide a framework for all things \
+performance analysis. It covers hardware level \
+(CPU/PMU, Performance Monitoring Unit) features \
+and software features (software counters, tracepoints) \
+as well."
+
+LICENSE = "GPLv2"
+LIC_FILES_CHKSUM = "file://COPYING;md5=d7810fab7487fb0aad327b76f1be7cd7"
+
+PR = "r0"
+
+BUILDPERF_libc-uclibc = "no"
+
+DEPENDS = "virtual/kernel \
+           virtual/${MLPREFIX}libc \
+           ${MLPREFIX}elfutils \
+           ${MLPREFIX}binutils \
+          "
+RDEPENDS_${PN} += "elfutils perl python"
+
+PROVIDES = "virtual/perf"
+
+inherit kernel-arch
+
+S = "${STAGING_KERNEL_DIR}"
+B = "${WORKDIR}/${BPN}-${PV}"
+
+EXTRA_OEMAKE = \
+               '-C ${S}/tools/perf \
+               O=${B} \
+               CROSS_COMPILE=${TARGET_PREFIX} \
+               ARCH=${ARCH} \
+               CC="${CC}" \
+               AR="${AR}" \
+               prefix=/usr \
+               NO_GTK2=1 NO_NEWT=1 NO_DWARF=1 \
+               '
+
+do_compile() {
+       oe_runmake all
+}
+
+do_install() {
+       oe_runmake DESTDIR=${D} install
+}
+
+PACKAGE_ARCH = "${MACHINE_ARCH}"
+