blktrace: fix and enable parallel build

(From OE-Core rev: 521ec7e979409f213cd98ed6015fdba2fce89243)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-kernel/blktrace/blktrace/makefile-fix-parallel.patch

@@ -0,0 +1,41 @@
+From 98cb9a95ce536d21be390934bd42dc2abde5959f Mon Sep 17 00:00:00 2001
+From: Robert Yang <liezhi.yang@windriver.com>
+Date: Thu, 29 Jan 2015 22:18:06 -0800
+Subject: [PATCH] Makefile: fix for parallel build
+
+Fixed parallel issue:
+* btreplay.o: file not recognized: File truncated
+  collect2: error: ld returned 1 exit status
+
+* btreplay/btreplay.c:47:18: fatal error: list.h: No such file or directory
+  #include "list.h"
+                  ^
+  compilation terminated.
+
+  Don't make btreplay twice will fix the problem
+
+Upstream-Status: Pending
+
+Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
+---
+ Makefile |    4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/Makefile b/Makefile
+index fe35d02..e7b1e94 100644
+--- a/Makefile
++++ b/Makefile
+@@ -17,8 +17,8 @@ btt/btt:
+ btreplay/btrecord:
+ 	$(MAKE) -C btreplay
+ 
+-btreplay/btreplay:
+-	$(MAKE) -C btreplay
++btreplay/btreplay: btreplay/btrecord
++	echo Building $@
+ 
+ %.o: %.c
+ 	$(CC) -o $*.o -c $(ALL_CFLAGS) $<
+-- 
+1.7.9.5
+

meta/recipes-kernel/blktrace/blktrace_git.bb

@@ -10,7 +10,9 @@ PR = "r6"
 PV = "1.0.5+git${SRCPV}"
 
 SRC_URI = "git://git.kernel.dk/blktrace.git \
-           file://ldflags.patch"
+           file://ldflags.patch \
+           file://makefile-fix-parallel.patch \
+           "
 
 S = "${WORKDIR}/git"
 
@@ -19,7 +21,6 @@ EXTRA_OEMAKE = "\
     'CFLAGS=${CFLAGS}' \
     'LDFLAGS=${LDFLAGS}' \
 "
-PARALLEL_MAKE = ""
 
 do_install() {
 	oe_runmake ARCH="${ARCH}" prefix=${prefix} \