rcar-gen3: dbus: WORKAROUND to fix memory leak issue

In Yocto v3.4.0, memory leak occurs when restarting Weston:

| root@salvator-x:~# cat /proc/meminfo | grep Cma
| CmaTotal:         671744 kB
| CmaFree:          629788 kB
| root@salvator-x:~#
| root@salvator-x:~# systemctl restart weston
| root@salvator-x:~#
| root@salvator-x:~# cat /proc/meminfo | grep Cma
| CmaTotal:         671744 kB
| CmaFree:          599404 kB

It will make Weston crash because out of memory if restarting many
times.
This patch is a WORKAROUND to avoid the issue, it restarts dbus depend
on Weston and memory will be released properly.

Signed-off-by: Thao Nguyen <thao.nguyen.yb@renesas.com>
Signed-off-by: Khang Nguyen <khang.nguyen.xv@rvc.renesas.com>
Signed-off-by: Takamitsu Honda <takamitsu.honda.pv@renesas.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/meta-rcar-gen3/recipes-core/dbus/dbus_1.10.20.bbappend b/meta-rcar-gen3/recipes-core/dbus/dbus_1.10.20.bbappend
new file mode 100644
index 0000000..66183b1
--- /dev/null
+++ b/meta-rcar-gen3/recipes-core/dbus/dbus_1.10.20.bbappend
@@ -0,0 +1,12 @@
+# WORKAROUND for memory leak issue when restart weston
+
+# Make sure the WORKAROUND only effect with GFX and MMP config
+ENABLE_FIX = "${@'1' if 'gsx' in '${MACHINE_FEATURES}' else '0'}"
+
+# Modify dbus.service to make dbus restarts depend on weston
+do_install_prepend() {
+    if [ "X${ENABLE_FIX}" = "X1" ]; then
+        sed -e "/Requires=dbus.socket/a PartOf=weston.service" \
+        -i ${B}/bus/dbus.service
+    fi
+}