bitbake.conf: move BB_NUMBER_THREADS and PARALLEL_MAKE to bitbake.conf

Currently, BB_NUMBER_THREADS and PARALLEL_MAKE default to unset and
are set in local.conf. Now that we have the automatic probing,
the default values can be set in bitbake.conf and an example of
explicitly defining how many tasks to run can be moved to
local.conf.sample.extended.

[YOCTO #6217]

Signed-off-by: Roxana Ciobanu <roxana.ciobanu@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 23 insertions, 0 deletions

diff --git a/meta-yocto/conf/local.conf.sample.extended b/meta-yocto/conf/local.conf.sample.extended
index b156319163..89b80a6eed 100644
--- a/meta-yocto/conf/local.conf.sample.extended
+++ b/meta-yocto/conf/local.conf.sample.extended
@@ -2,6 +2,29 @@
 # certain recipes.
 #BBMASK = ""
 
+#
+# Parallelism Options
+#
+# These two options control how much parallelism BitBake should use. The first
+# option determines how many tasks bitbake should run in parallel:
+#
+#BB_NUMBER_THREADS ?= "4"
+#
+# Default to setting automatically based on cpu count
+#BB_NUMBER_THREADS ?= "${@oe.utils.cpu_count()}"
+#
+# The second option controls how many processes make should run in parallel when
+# running compile tasks:
+#
+#PARALLEL_MAKE ?= "-j 4"
+#
+# Default to setting automatically based on cpu count
+#PARALLEL_MAKE ?= "-j ${@oe.utils.cpu_count()}"
+#
+# For a quad-core machine, BB_NUMBER_THREADS = "4", PARALLEL_MAKE = "-j 4" would
+# be appropriate for example.
+
+
 # eglibc configurability is used to reduce minimal image's size.
 # the all supported eglibc options are listed in DISTRO_FEATURES_LIBC
 # and disabled by default. Uncomment and copy the DISTRO_FEATURES_LIBC