udev-cache: Update cache asynchronously

Don't hold up the boot while the cache is being updated.

(From OE-Core rev: eb52b257511b7624c8e212f5e9df711935d619ee)

Signed-off-by: Richard Tollerton <rich.tollerton@ni.com>
Signed-off-by: Ben Shelton <ben.shelton@ni.com>
Acked-by: Gratian Crisan <gratian.crisan@ni.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 11 insertions, 9 deletions

diff --git a/meta/recipes-core/udev/udev/udev-cache b/meta/recipes-core/udev/udev/udev-cache
index 571463fa01..3c18061991 100644
--- a/meta/recipes-core/udev/udev/udev-cache
+++ b/meta/recipes-core/udev/udev/udev-cache
@@ -44,15 +44,17 @@ fi
 
 if [ "$DEVCACHE" != "" -a -e "$DEVCACHE_REGEN" ]; then
         echo "Populating dev cache"
-        udevadm control --stop-exec-queue
-        sysconf_cmd > "$SYSCONF_TMP"
-        find /dev -xdev \( -type b -o -type c -o -type l \) | cut -c 2- \
-                | xargs tar cf "${DEVCACHE_TMP}" -T-
-        gzip < "${DEVCACHE_TMP}" > "$DEVCACHE"
-        rm -f "${DEVCACHE_TMP}"
-        mv "$SYSCONF_TMP" "$SYSCONF_CACHED"
-        udevadm control --start-exec-queue
-        rm -f "$DEVCACHE_REGEN"
+        (
+                udevadm control --stop-exec-queue
+                sysconf_cmd > "$SYSCONF_TMP"
+                find /dev -xdev \( -type b -o -type c -o -type l \) | cut -c 2- \
+                        | xargs tar cf "${DEVCACHE_TMP}" -T-
+                        gzip < "${DEVCACHE_TMP}" > "$DEVCACHE"
+                        rm -f "${DEVCACHE_TMP}"
+                        mv "$SYSCONF_TMP" "$SYSCONF_CACHED"
+                        udevadm control --start-exec-queue
+                        rm -f "$DEVCACHE_REGEN"
+        ) &
 fi
 
 exit 0