Make it possible to do profile-optimized build. The implementation is
virtually identical to how we do it in Python 2.7. Basically, you need
to define 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.lehto...@linux.intel.com>
---
meta/recipes-devtools/python/python3_3.5.2.bb | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/meta/recipes-devtools/python/python3_3.5.2.bb
b/meta/recipes-devtools/python/python3_3.5.2.bb
index ead8a0d..7e629b8 100644
--- a/meta/recipes-devtools/python/python3_3.5.2.bb
+++ b/meta/recipes-devtools/python/python3_3.5.2.bb
@@ -77,6 +77,17 @@ 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
@@ -116,6 +127,10 @@ do_compile() {
if [ "${PYTHON3_MAKE_TARGET}" = "build_all_generate_profile" ]; then
# This is only used in PGO profiling by python-profile-opt package
export EXTRA_CFLAGS="-fprofile-dir=./python3-pgo-profiles/"
+ elif [ -n "${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 \
@@ -136,6 +151,11 @@ 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 \
--
2.10.2
--
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