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authorMarkus Lehtonen <markus.lehtonen@linux.intel.com>2016-09-05 11:57:52 +0300
committerMarkus Lehtonen <markus.lehtonen@linux.intel.com>2017-05-18 11:19:40 +0300
commit6ac89c5c7768b71776da4e6e590d8d535f3bf00d (patch)
tree5a99bbc48c03367bc1a07a75b67e45ecc85c5e69 /meta/recipes-devtools/python/python3_3.5.2.bb
parent20bee817e00344cb10225725eebc304e04996b29 (diff)
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python3: support profile optimized build
This patch makes it possible to build python3 with profile directed optimization. That is, feed python build process with profile data to guide optimization. This is the third (and the last) step in profile directed optimization for Python 3.x. In order to do a profile-optimized build you need to specify PYTHON3_PROFILE_OPT = "1" in your local.conf, and, have profile data available in the location pointed to by PYTHON3_PROFILE_DIR. Profile data can be obtainen e.g. by running bitbake python-pgo-image -c profile3. [YOCTO #9338] Signed-off-by: Markus Lehtonen <markus.lehtonen@linux.intel.com>
Diffstat (limited to 'meta/recipes-devtools/python/python3_3.5.2.bb')
-rw-r--r--meta/recipes-devtools/python/python3_3.5.2.bb20
1 files changed, 20 insertions, 0 deletions
diff --git a/meta/recipes-devtools/python/python3_3.5.2.bb b/meta/recipes-devtools/python/python3_3.5.2.bb
index 97ecbab5e3..d40bc14d93 100644
--- a/meta/recipes-devtools/python/python3_3.5.2.bb
+++ b/meta/recipes-devtools/python/python3_3.5.2.bb
@@ -76,6 +76,17 @@ export CROSSPYTHONPATH = "${STAGING_LIBDIR_NATIVE}/python${PYTHON_MAJMIN}/lib-dy
# No ctypes option for python 3
PYTHONLSBOPTS = ""
+# Automatic profile guided optimization
+PYTHON3_MAKE_TARGET ?= "${@'build_all_use_profile' if d.getVar('PYTHON3_PROFILE_OPT', True) == '1' else ''}"
+PYTHON3_PROFILE_DIR ?= "${@'${TMPDIR}/work-shared/${MACHINE}/python3/pgo-data' if d.getVar('PYTHON3_PROFILE_OPT', True) == '1' else ''}"
+python () {
+ if (d.getVar('PYTHON3_PROFILE_OPT', True) == '1' and
+ d.getVar('PYTHON3_MAKE_TARGET', True) == 'build_all_use_profile'):
+ profile_dir = d.getVar('PYTHON3_PROFILE_DIR', True)
+ bb.utils.mkdirhier(profile_dir)
+ d.setVarFlag('do_compile', 'file-checksums', '%s:True' % profile_dir)
+}
+
do_configure_append() {
rm -f ${S}/Makefile.orig
autoreconf -Wcross --verbose --install --force --exclude=autopoint ../Python-${PV}/Modules/_ctypes/libffi
@@ -115,6 +126,10 @@ do_compile() {
if [ "${PYTHON3_MAKE_TARGET}" = "build_all_generate_profile" ]; then
# This is only used in PGO profiling by python3-profile-opt package
export EXTRA_CFLAGS="-fprofile-dir=./python3-pgo-profiles/"
+ elif [ -n "${PYTHON3_PROFILE_DIR}" ]; then
+ export EXTRA_CFLAGS="-fprofile-dir=${PYTHON3_PROFILE_DIR}"
+ # Remove non-optimized build artefacts
+ oe_runmake clean
fi
oe_runmake HOSTPGEN=${STAGING_BINDIR_NATIVE}/python3-native/pgen \
@@ -135,6 +150,11 @@ do_install() {
install -d ${D}${libdir}/pkgconfig
install -d ${D}${libdir}/python${PYTHON_MAJMIN}/config
+ # This only has effect if we build with -fprofile-use, e.g. when make
+ # target is build_all_use_profile
+ if [ -n "${PYTHON3_PROFILE_DIR}" ]; then
+ export EXTRA_CFLAGS="-fprofile-dir=${PYTHON3_PROFILE_DIR}"
+ fi
# rerun the build once again with original makefile this time
# run install in a separate step to avoid compile/install race
oe_runmake HOSTPGEN=${STAGING_BINDIR_NATIVE}/python3-native/pgen \