[OE-core] [PATCH V2] perf: make a copy of kernel source to perf workdir

[Hongxu Jia]

Since perf modify kernel source which shared by multiple
recipes, it probably caused kernel-devsrc compile failure
at world build.
...
|0 blocks
|cpio: ./tools/perf/arch/arm/util/sedr7ORqk: Cannot stat:
No such file or directory
|0 blocks
...
cpio tried to find a file at ${S}/tools/perf and failed
if the input list is not valid.

Make a copy of kernel shared source directory into a perf workdir
could fix the issue.

Drop `Fix for rebuilding' which is obsolete

Signed-off-by: Hongxu Jia <hongxu.jia at windriver.com>
---
 meta/recipes-kernel/perf/perf.bb | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/meta/recipes-kernel/perf/perf.bb b/meta/recipes-kernel/perf/perf.bb
index 872b5f0..8b40806 100644
--- a/meta/recipes-kernel/perf/perf.bb
+++ b/meta/recipes-kernel/perf/perf.bb
@@ -61,7 +61,7 @@ export PERL_ARCHLIB = "${STAGING_LIBDIR}${PERL_OWN_DIR}/perl/${@get_perl_version
 
 inherit kernelsrc
 
-B = "${WORKDIR}/${BPN}-${PV}"
+S = "${WORKDIR}/${BP}"
 SPDX_S = "${S}/tools/perf"
 
 # The LDFLAGS is required or some old kernels fails due missing
@@ -119,11 +119,12 @@ do_install() {
 	fi
 }
 
-do_configure_prepend () {
-    # Fix for rebuilding
-    rm -rf ${B}/
-    mkdir -p ${B}/
+do_configure[prefuncs] += "git_clone_kernel_source"
+git_clone_kernel_source () {
+    git clone --single-branch ${STAGING_KERNEL_DIR} ${S}
+}
 
+do_configure_prepend () {
     # If building a multlib based perf, the incorrect library path will be
     # detected by perf, since it triggers via: ifeq ($(ARCH),x86_64). In a 32 bit
     # build, with a 64 bit multilib, the arch won't match and the detection of a 
-- 
2.7.4