[PATCH V2 2/2] powerpc/configs: Replace pseries_le_defconfig with a Makefile target using merge_config
Rather than continuing to maintain a copy of pseries_defconfig with enabled CONFIG_CPU_LITTLE_ENDIAN, use the generic merge_config script and use an le.config to enable little endian on top of pseries_defconfig without the need for a duplicated _defconfig file. This method will require less maintenance in the future and will ensure that both 'defconfigs' are always in sync. It is worth noting that the seemingly more simple approach of: pseries_le_defconfig: pseries_defconfig $(Q)$(MAKE) le.config Will not work when building using O=builddir. The obvious fix to that pseries_le_defconfig: $(Q)$(MAKE) -f $(srctree)/Makefile pseries_defconfig le.config Will result in options that get selected by other options having 'select CONFIG_FOO' in the defconfig file possibly remaining selected after the merge with le.config, when they would not have been set by using an actual pseries_le_defconfig file. As a result this has caused differences in the generated .config files from when there were actual pseries_le_defconfig and pseries_defconfg files. The solution is to ensure to only invoke a config target once so that it has all the information it needs to correctly set all the parameters. This is done through the explicit call to make olddefconfig Signed-off-by: Cyril Bur cyril...@gmail.com --- V2: Rework to have olddefconfig (or equivalent) only called once. Improved to make writing *_defconfig targets easier and have the targets look cleaner. arch/powerpc/Makefile | 15 ++ arch/powerpc/configs/le.config| 1 + arch/powerpc/configs/pseries_le_defconfig | 319 -- 3 files changed, 16 insertions(+), 319 deletions(-) create mode 100644 arch/powerpc/configs/le.config delete mode 100644 arch/powerpc/configs/pseries_le_defconfig diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index 07a4808..2cafce6 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -269,6 +269,21 @@ bootwrapper_install: %.dtb: scripts $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) +#Used to create 'merged defconfigs' +#Should be $(call)'ed with the first argument as the defconfig on which to +#base and with a space separated list of .config files to merge, without +#the .config suffix. +define merge_into_defconfig +$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \ + -m -O $(objtree) $(srctree)/arch/$(SRCARCH)/configs/$(1) \ + $(foreach config,$(2),$(srctree)/arch/$(SRCARCH)/configs/$(config).config) +$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig +endef + +PHONY += pseries_le_defconfig +pseries_le_defconfig: + $(call merge_into_defconfig,pseries_defconfig,le) + define archhelp @echo '* zImage - Build default images selected by kernel config' @echo ' zImage.*- Compressed kernel image (arch/$(ARCH)/boot/zImage.*)' diff --git a/arch/powerpc/configs/le.config b/arch/powerpc/configs/le.config new file mode 100644 index 000..ee43fdb --- /dev/null +++ b/arch/powerpc/configs/le.config @@ -0,0 +1 @@ +CONFIG_CPU_LITTLE_ENDIAN=y diff --git a/arch/powerpc/configs/pseries_le_defconfig b/arch/powerpc/configs/pseries_le_defconfig deleted file mode 100644 index 09bc96e..000 --- a/arch/powerpc/configs/pseries_le_defconfig +++ /dev/null @@ -1,319 +0,0 @@ -CONFIG_PPC64=y -CONFIG_SMP=y -CONFIG_NR_CPUS=2048 -CONFIG_CPU_LITTLE_ENDIAN=y -CONFIG_SYSVIPC=y -CONFIG_POSIX_MQUEUE=y -CONFIG_FHANDLE=y -CONFIG_AUDIT=y -CONFIG_AUDITSYSCALL=y -CONFIG_IRQ_DOMAIN_DEBUG=y -CONFIG_NO_HZ=y -CONFIG_HIGH_RES_TIMERS=y -CONFIG_TASKSTATS=y -CONFIG_TASK_DELAY_ACCT=y -CONFIG_TASK_XACCT=y -CONFIG_TASK_IO_ACCOUNTING=y -CONFIG_IKCONFIG=y -CONFIG_IKCONFIG_PROC=y -CONFIG_NUMA_BALANCING=y -CONFIG_NUMA_BALANCING_DEFAULT_ENABLED=y -CONFIG_CGROUPS=y -CONFIG_CGROUP_FREEZER=y -CONFIG_CGROUP_DEVICE=y -CONFIG_CPUSETS=y -CONFIG_CGROUP_CPUACCT=y -CONFIG_MEMCG=y -CONFIG_MEMCG_SWAP=y -CONFIG_CGROUP_PERF=y -CONFIG_CGROUP_SCHED=y -CONFIG_USER_NS=y -CONFIG_BLK_DEV_INITRD=y -# CONFIG_COMPAT_BRK is not set -CONFIG_PROFILING=y -CONFIG_OPROFILE=y -CONFIG_KPROBES=y -CONFIG_JUMP_LABEL=y -CONFIG_MODULES=y -CONFIG_MODULE_UNLOAD=y -CONFIG_MODVERSIONS=y -CONFIG_MODULE_SRCVERSION_ALL=y -CONFIG_PARTITION_ADVANCED=y -CONFIG_PPC_SPLPAR=y -CONFIG_SCANLOG=m -CONFIG_PPC_SMLPAR=y -CONFIG_DTL=y -# CONFIG_PPC_PMAC is not set -CONFIG_RTAS_FLASH=m -CONFIG_IBMEBUS=y -CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y -CONFIG_HZ_100=y -CONFIG_BINFMT_MISC=m -CONFIG_PPC_TRANSACTIONAL_MEM=y -CONFIG_KEXEC=y -CONFIG_IRQ_ALL_CPUS=y -CONFIG_MEMORY_HOTPLUG=y -CONFIG_MEMORY_HOTREMOVE=y -CONFIG_KSM=y -CONFIG_TRANSPARENT_HUGEPAGE=y -CONFIG_PPC_64K_PAGES=y -CONFIG_PPC_SUBPAGE_PROT=y -CONFIG_SCHED_SMT=y -CONFIG_HOTPLUG_PCI=y -CONFIG_HOTPLUG_PCI_RPA=m -CONFIG_HOTPLUG_PCI_RPA_DLPAR=m -CONFIG_NET=y -CONFIG_PACKET=y -CONFIG_UNIX=y -CONFIG_XFRM_USER=m -CONFIG_NET_KEY=m -CONFIG_INET=y -CONFIG_IP_MULTICAST=y -CONFIG_NET_IPIP=y -CONFIG_SYN_COOKIES=y
Re: [PATCH V2 2/2] powerpc/configs: Replace pseries_le_defconfig with a Makefile target using merge_config
Reviewed-by: Samuel Mendoza-Jonas sam...@au1.ibm.com On 26/05/15 11:36, Cyril Bur wrote: Rather than continuing to maintain a copy of pseries_defconfig with enabled CONFIG_CPU_LITTLE_ENDIAN, use the generic merge_config script and use an le.config to enable little endian on top of pseries_defconfig without the need for a duplicated _defconfig file. This method will require less maintenance in the future and will ensure that both 'defconfigs' are always in sync. It is worth noting that the seemingly more simple approach of: pseries_le_defconfig: pseries_defconfig $(Q)$(MAKE) le.config Will not work when building using O=builddir. The obvious fix to that pseries_le_defconfig: $(Q)$(MAKE) -f $(srctree)/Makefile pseries_defconfig le.config Will result in options that get selected by other options having 'select CONFIG_FOO' in the defconfig file possibly remaining selected after the merge with le.config, when they would not have been set by using an actual pseries_le_defconfig file. As a result this has caused differences in the generated .config files from when there were actual pseries_le_defconfig and pseries_defconfg files. The solution is to ensure to only invoke a config target once so that it has all the information it needs to correctly set all the parameters. This is done through the explicit call to make olddefconfig Signed-off-by: Cyril Bur cyril...@gmail.com --- V2: Rework to have olddefconfig (or equivalent) only called once. Improved to make writing *_defconfig targets easier and have the targets look cleaner. arch/powerpc/Makefile | 15 ++ arch/powerpc/configs/le.config| 1 + arch/powerpc/configs/pseries_le_defconfig | 319 -- 3 files changed, 16 insertions(+), 319 deletions(-) create mode 100644 arch/powerpc/configs/le.config delete mode 100644 arch/powerpc/configs/pseries_le_defconfig diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index 07a4808..2cafce6 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -269,6 +269,21 @@ bootwrapper_install: %.dtb: scripts $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) +#Used to create 'merged defconfigs' +#Should be $(call)'ed with the first argument as the defconfig on which to +#base and with a space separated list of .config files to merge, without +#the .config suffix. +define merge_into_defconfig +$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \ + -m -O $(objtree) $(srctree)/arch/$(SRCARCH)/configs/$(1) \ + $(foreach config,$(2),$(srctree)/arch/$(SRCARCH)/configs/$(config).config) +$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig +endef + +PHONY += pseries_le_defconfig +pseries_le_defconfig: + $(call merge_into_defconfig,pseries_defconfig,le) + define archhelp @echo '* zImage - Build default images selected by kernel config' @echo ' zImage.*- Compressed kernel image (arch/$(ARCH)/boot/zImage.*)' diff --git a/arch/powerpc/configs/le.config b/arch/powerpc/configs/le.config new file mode 100644 index 000..ee43fdb --- /dev/null +++ b/arch/powerpc/configs/le.config @@ -0,0 +1 @@ +CONFIG_CPU_LITTLE_ENDIAN=y diff --git a/arch/powerpc/configs/pseries_le_defconfig b/arch/powerpc/configs/pseries_le_defconfig deleted file mode 100644 index 09bc96e..000 --- a/arch/powerpc/configs/pseries_le_defconfig +++ /dev/null @@ -1,319 +0,0 @@ -CONFIG_PPC64=y -CONFIG_SMP=y -CONFIG_NR_CPUS=2048 -CONFIG_CPU_LITTLE_ENDIAN=y -CONFIG_SYSVIPC=y -CONFIG_POSIX_MQUEUE=y -CONFIG_FHANDLE=y -CONFIG_AUDIT=y -CONFIG_AUDITSYSCALL=y -CONFIG_IRQ_DOMAIN_DEBUG=y -CONFIG_NO_HZ=y -CONFIG_HIGH_RES_TIMERS=y -CONFIG_TASKSTATS=y -CONFIG_TASK_DELAY_ACCT=y -CONFIG_TASK_XACCT=y -CONFIG_TASK_IO_ACCOUNTING=y -CONFIG_IKCONFIG=y -CONFIG_IKCONFIG_PROC=y -CONFIG_NUMA_BALANCING=y -CONFIG_NUMA_BALANCING_DEFAULT_ENABLED=y -CONFIG_CGROUPS=y -CONFIG_CGROUP_FREEZER=y -CONFIG_CGROUP_DEVICE=y -CONFIG_CPUSETS=y -CONFIG_CGROUP_CPUACCT=y -CONFIG_MEMCG=y -CONFIG_MEMCG_SWAP=y -CONFIG_CGROUP_PERF=y -CONFIG_CGROUP_SCHED=y -CONFIG_USER_NS=y -CONFIG_BLK_DEV_INITRD=y -# CONFIG_COMPAT_BRK is not set -CONFIG_PROFILING=y -CONFIG_OPROFILE=y -CONFIG_KPROBES=y -CONFIG_JUMP_LABEL=y -CONFIG_MODULES=y -CONFIG_MODULE_UNLOAD=y -CONFIG_MODVERSIONS=y -CONFIG_MODULE_SRCVERSION_ALL=y -CONFIG_PARTITION_ADVANCED=y -CONFIG_PPC_SPLPAR=y -CONFIG_SCANLOG=m -CONFIG_PPC_SMLPAR=y -CONFIG_DTL=y -# CONFIG_PPC_PMAC is not set -CONFIG_RTAS_FLASH=m -CONFIG_IBMEBUS=y -CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y -CONFIG_HZ_100=y -CONFIG_BINFMT_MISC=m -CONFIG_PPC_TRANSACTIONAL_MEM=y -CONFIG_KEXEC=y -CONFIG_IRQ_ALL_CPUS=y -CONFIG_MEMORY_HOTPLUG=y -CONFIG_MEMORY_HOTREMOVE=y -CONFIG_KSM=y -CONFIG_TRANSPARENT_HUGEPAGE=y -CONFIG_PPC_64K_PAGES=y -CONFIG_PPC_SUBPAGE_PROT=y -CONFIG_SCHED_SMT=y -CONFIG_HOTPLUG_PCI=y
