kernel-yocto: ensure that only a single defconfig is processed

As a follow up to the changes to ensure that KBUILD_DEFCONFIG will
always get its defconfig into the processing, we also should ensure that
we don't get both a KBUILD_DEFCONFIG and a SRC_URI defconfig in the
configuration queue. If both are in the configuration queue, we end up
with competing values and a potentially long running check of 5000+
options x 2 against the final .config.

By removing the defconfig found from the SRC_URI when one is found
via KBUILD_DEFCONFIG, we ensure that only one will be processed.

(From OE-Core rev: 7e98c295c1bb511ece51b5f8c97f26c173ddaf76)

Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 12 insertions, 1 deletions

diff --git a/meta/classes/kernel-yocto.bbclass b/meta/classes/kernel-yocto.bbclass
index 2edf0fd157..60979a218f 100644
--- a/meta/classes/kernel-yocto.bbclass
+++ b/meta/classes/kernel-yocto.bbclass
@@ -107,6 +107,8 @@ do_kernel_metadata() {
                                 cmp "${WORKDIR}/defconfig" "${S}/arch/${ARCH}/configs/${KBUILD_DEFCONFIG}"
                                 if [ $? -ne 0 ]; then
                                         bbwarn "defconfig detected in WORKDIR. ${KBUILD_DEFCONFIG} skipped"
+                                else
+                                        cp -f ${S}/arch/${ARCH}/configs/${KBUILD_DEFCONFIG} ${WORKDIR}/defconfig
                                 fi
                         else
                                 cp -f ${S}/arch/${ARCH}/configs/${KBUILD_DEFCONFIG} ${WORKDIR}/defconfig
@@ -117,10 +119,19 @@ do_kernel_metadata() {
                 fi
         fi
 
-        sccs="$sccs ${@" ".join(find_sccs(d))}"
+        sccs_from_src_uri="${@" ".join(find_sccs(d))}"
         patches="${@" ".join(find_patches(d))}"
         feat_dirs="${@" ".join(find_kernel_feature_dirs(d))}"
 
+        # a quick check to make sure we don't have duplicate defconfigs
+        # If there's a defconfig in the SRC_URI, did we also have one from
+        # the KBUILD_DEFCONFIG processing above ?
+        if [ -n "$sccs" ]; then
+            # we did have a defconfig from above. remove any that might be in the src_uri
+            sccs_from_src_uri=$(echo $sccs_from_src_uri | sed 's/defconfig//g')
+        fi
+        sccs="$sccs $sccs_from_src_uri"
+
         # check for feature directories/repos/branches that were part of the
         # SRC_URI. If they were supplied, we convert them into include directives
         # for the update part of the process