ref-manual/variables.rst: make reference to new limiting-resources doc

For host resource limiting variables, make a reference to the new
"Limiting the Host Resources Usage" document.

(From yocto-docs rev: 161a8549441e8c38791ab7f63001b2a15a39d2f2)

Signed-off-by: Antonin Godard <antonin.godard@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 25 insertions, 7 deletions

diff --git a/documentation/ref-manual/variables.rst b/documentation/ref-manual/variables.rst
index c56418e2a2..d079e4b598 100644
--- a/documentation/ref-manual/variables.rst
+++ b/documentation/ref-manual/variables.rst
@@ -589,8 +589,12 @@ system and gives an overview of their function and contents.
       See :term:`bitbake:BB_INVALIDCONF` in the BitBake manual.
 
    :term:`BB_LOADFACTOR_MAX`
-      The system load threshold above which BitBake will stop runnig extra
-      tasks.
+      The system load threshold above which :term:`BitBake` will stop running
+      extra tasks.
+
+      For more information on how to limit the resources used during builds, see
+      the :doc:`/dev-manual/limiting-resources` section of the Yocto Project
+      Development Tasks Manual.
 
    :term:`BB_LOGCONFIG`
       See :term:`bitbake:BB_LOGCONFIG` in the BitBake manual.
@@ -649,11 +653,9 @@ system and gives an overview of their function and contents.
       An alternative to using :term:`BB_NUMBER_THREADS` to keep the usage
       of build system resources under control is to use the smarter
       :term:`BB_PRESSURE_MAX_CPU`, :term:`BB_PRESSURE_MAX_IO` or
-      :term:`BB_PRESSURE_MAX_MEMORY` controls. They will prevent BitBake
-      from starting new tasks as long as thresholds are exceeded. Anyway,
-      as with :term:`BB_NUMBER_THREADS`, such controls won't prevent the
-      tasks already being run from using all CPU threads on the system
-      if :term:`PARALLEL_MAKE` is not set to a low value.
+      :term:`BB_PRESSURE_MAX_MEMORY` controls. See the
+      :doc:`/dev-manual/limiting-resources` section of the Yocto Project
+      Development Tasks Manual.
 
    :term:`BB_ORIGENV`
       See :term:`bitbake:BB_ORIGENV` in the BitBake manual.
@@ -664,12 +666,24 @@ system and gives an overview of their function and contents.
    :term:`BB_PRESSURE_MAX_CPU`
       See :term:`bitbake:BB_PRESSURE_MAX_CPU` in the BitBake manual.
 
+      For more information on how to limit the resources used during builds, see
+      the :doc:`/dev-manual/limiting-resources` section of the Yocto Project
+      Development Tasks Manual.
+
    :term:`BB_PRESSURE_MAX_IO`
       See :term:`bitbake:BB_PRESSURE_MAX_IO` in the BitBake manual.
 
+      For more information on how to limit the resources used during builds, see
+      the :doc:`/dev-manual/limiting-resources` section of the Yocto Project
+      Development Tasks Manual.
+
    :term:`BB_PRESSURE_MAX_MEMORY`
       See :term:`bitbake:BB_PRESSURE_MAX_MEMORY` in the BitBake manual.
 
+      For more information on how to limit the resources used during builds, see
+      the :doc:`/dev-manual/limiting-resources` section of the Yocto Project
+      Development Tasks Manual.
+
    :term:`BB_RUNFMT`
       See :term:`bitbake:BB_RUNFMT` in the BitBake manual.
 
@@ -7006,6 +7020,10 @@ system and gives an overview of their function and contents.
       ":ref:`dev-manual/speeding-up-build:speeding up a build`"
       section in the Yocto Project Development Tasks Manual.
 
+      For more information on how to limit the resources used during builds, see
+      the :doc:`/dev-manual/limiting-resources` section of the Yocto Project
+      Development Tasks Manual.
+
    :term:`PARALLEL_MAKEINST`
       Extra options passed to the build tool install command
       (``make install``, ``ninja install`` or more specific ones)