From: "Eugene San (eugenesan)" <eugene...@gmail.com>
Signed-off-by: Eugene San (eugenesan) <eugene...@gmail.com>
---
Config.in | 13 +++++++++++++
include/kernel-defaults.mk | 6 ++++--
2 files changed, 17 insertions(+), 2 deletions(-)
diff --git a/Config.in b/Config.in
index f36221c..f4dbf80 100644
--- a/Config.in
+++ b/Config.in
@@ -307,6 +307,19 @@ menu "Global build settings"
If you say Y, toolchain build might break.
Before reporting build bugs, set this to N and re-run the
build.
+ config KERNEL_PARALLEL
+ bool
+ prompt "Parallelize the kernel build (May break build)"
+ depends on PKG_BUILD_PARALLEL
+ default n
+ help
+ Build the kernel with parallel make jobs.
+ This speeds up the kernel build on SMP machines, but may
+ break the build for certain toolchain versions.
+
+ If you say Y, kernel build might break.
+ Before reporting build bugs, set this to N and re-run the
build.
+
comment "Stripping options"
choice
diff --git a/include/kernel-defaults.mk b/include/kernel-defaults.mk
index 5fd27ae..b637577 100644
--- a/include/kernel-defaults.mk
+++ b/include/kernel-defaults.mk
@@ -5,6 +5,8 @@
# See /LICENSE for more information.
#
+KERNEL_JOBS?=$(if $(CONFIG_KERNEL_PARALLEL),-j$(CONFIG_PKG_BUILD_JOBS))
+
KERNEL_MAKEOPTS := -C $(LINUX_DIR) \
CROSS_COMPILE="$(KERNEL_CROSS)" \
ARCH="$(LINUX_KARCH)" \
@@ -93,14 +95,14 @@ endef
define Kernel/CompileModules/Default
rm -f $(LINUX_DIR)/vmlinux $(LINUX_DIR)/System.map
- +$(MAKE) $(KERNEL_MAKEOPTS) modules
+ +$(MAKE) $(KERNEL_MAKEOPTS) $(KERNEL_JOBS) modules
endef
OBJCOPY_STRIP = -R .reginfo -R .notes -R .note -R .comment -R .mdebug -R
.note.gnu.build-id
define Kernel/CompileImage/Default
$(if $(CONFIG_TARGET_ROOTFS_INITRAMFS),,rm -f $(TARGET_DIR)/init)
- +$(MAKE) $(KERNEL_MAKEOPTS) $(KERNELNAME)
+ +$(MAKE) $(KERNEL_MAKEOPTS) $(KERNEL_JOBS) $(KERNELNAME)
$(KERNEL_CROSS)objcopy -O binary $(OBJCOPY_STRIP) -S
$(LINUX_DIR)/vmlinux $(LINUX_KERNEL)
$(KERNEL_CROSS)objcopy $(OBJCOPY_STRIP) -S $(LINUX_DIR)/vmlinux
$(KERNEL_BUILD_DIR)/vmlinux.elf
endef
--
1.7.6
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