[v4] selftests: add headers_install to lib.mk

Message ID 20180607110911.12252-1-anders.roxell@linaro.org
State Superseded
Headers show
Series
  • [v4] selftests: add headers_install to lib.mk
Related show

Commit Message

Anders Roxell June 7, 2018, 11:09 a.m.
If the kernel headers aren't installed we can't build all the tests.
Add a new make target rule 'khdr' in the file lib.mk to generate the
kernel headers and that gets include for every test-dir Makefile that
includes lib.mk If the testdir in turn have its own sub-dirs the
top_srcdir needs to be set to the linux-rootdir to be able to generate
the kernel headers.

Signed-off-by: Anders Roxell <anders.roxell@linaro.org>

Reviewed-by: Fathi Boudra <fathi.boudra@linaro.org>

---
 Makefile                                           | 14 +-------------
 scripts/subarch.include                            | 13 +++++++++++++
 tools/testing/selftests/android/Makefile           |  2 +-
 tools/testing/selftests/android/ion/Makefile       |  2 ++
 tools/testing/selftests/futex/functional/Makefile  |  1 +
 tools/testing/selftests/gpio/Makefile              |  7 ++-----
 tools/testing/selftests/kvm/Makefile               |  7 ++-----
 tools/testing/selftests/lib.mk                     | 12 ++++++++++++
 tools/testing/selftests/net/Makefile               |  1 +
 .../selftests/networking/timestamping/Makefile     |  1 +
 tools/testing/selftests/vm/Makefile                |  4 ----
 11 files changed, 36 insertions(+), 28 deletions(-)
 create mode 100644 scripts/subarch.include

-- 
2.17.1

Comments

Anders Roxell July 23, 2018, 8:49 p.m. | #1
On Thu, 7 Jun 2018 at 13:09, Anders Roxell <anders.roxell@linaro.org> wrote:
>

> If the kernel headers aren't installed we can't build all the tests.

> Add a new make target rule 'khdr' in the file lib.mk to generate the

> kernel headers and that gets include for every test-dir Makefile that

> includes lib.mk If the testdir in turn have its own sub-dirs the

> top_srcdir needs to be set to the linux-rootdir to be able to generate

> the kernel headers.

>

> Signed-off-by: Anders Roxell <anders.roxell@linaro.org>

> Reviewed-by: Fathi Boudra <fathi.boudra@linaro.org>

> ---

>  Makefile                                           | 14 +-------------

>  scripts/subarch.include                            | 13 +++++++++++++

>  tools/testing/selftests/android/Makefile           |  2 +-

>  tools/testing/selftests/android/ion/Makefile       |  2 ++

>  tools/testing/selftests/futex/functional/Makefile  |  1 +

>  tools/testing/selftests/gpio/Makefile              |  7 ++-----

>  tools/testing/selftests/kvm/Makefile               |  7 ++-----

>  tools/testing/selftests/lib.mk                     | 12 ++++++++++++

>  tools/testing/selftests/net/Makefile               |  1 +

>  .../selftests/networking/timestamping/Makefile     |  1 +

>  tools/testing/selftests/vm/Makefile                |  4 ----

>  11 files changed, 36 insertions(+), 28 deletions(-)

>  create mode 100644 scripts/subarch.include

>

> diff --git a/Makefile b/Makefile

> index 6b9aea95ae3a..8050072300fa 100644

> --- a/Makefile

> +++ b/Makefile

> @@ -286,19 +286,7 @@ KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)

>  KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)

>  export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION

>

> -# SUBARCH tells the usermode build what the underlying arch is.  That is set

> -# first, and if a usermode build is happening, the "ARCH=um" on the command

> -# line overrides the setting of ARCH below.  If a native build is happening,

> -# then ARCH is assigned, getting whatever value it gets normally, and

> -# SUBARCH is subsequently ignored.

> -

> -SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \

> -                                 -e s/sun4u/sparc64/ \

> -                                 -e s/arm.*/arm/ -e s/sa110/arm/ \

> -                                 -e s/s390x/s390/ -e s/parisc64/parisc/ \

> -                                 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \

> -                                 -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ \

> -                                 -e s/riscv.*/riscv/)

> +include scripts/subarch.include

>

>  # Cross compiling and selecting different set of gcc/bin-utils

>  # ---------------------------------------------------------------------------

> diff --git a/scripts/subarch.include b/scripts/subarch.include

> new file mode 100644

> index 000000000000..650682821126

> --- /dev/null

> +++ b/scripts/subarch.include

> @@ -0,0 +1,13 @@

> +# SUBARCH tells the usermode build what the underlying arch is.  That is set

> +# first, and if a usermode build is happening, the "ARCH=um" on the command

> +# line overrides the setting of ARCH below.  If a native build is happening,

> +# then ARCH is assigned, getting whatever value it gets normally, and

> +# SUBARCH is subsequently ignored.

> +

> +SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \

> +                                 -e s/sun4u/sparc64/ \

> +                                 -e s/arm.*/arm/ -e s/sa110/arm/ \

> +                                 -e s/s390x/s390/ -e s/parisc64/parisc/ \

> +                                 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \

> +                                 -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ \

> +                                 -e s/riscv.*/riscv/)

> diff --git a/tools/testing/selftests/android/Makefile b/tools/testing/selftests/android/Makefile

> index 72c25a3cb658..d9a725478375 100644

> --- a/tools/testing/selftests/android/Makefile

> +++ b/tools/testing/selftests/android/Makefile

> @@ -6,7 +6,7 @@ TEST_PROGS := run.sh

>

>  include ../lib.mk

>

> -all:

> +all: khdr

>         @for DIR in $(SUBDIRS); do              \

>                 BUILD_TARGET=$(OUTPUT)/$$DIR;   \

>                 mkdir $$BUILD_TARGET  -p;       \

> diff --git a/tools/testing/selftests/android/ion/Makefile b/tools/testing/selftests/android/ion/Makefile

> index e03695287f76..88cfe88e466f 100644

> --- a/tools/testing/selftests/android/ion/Makefile

> +++ b/tools/testing/selftests/android/ion/Makefile

> @@ -10,6 +10,8 @@ $(TEST_GEN_FILES): ipcsocket.c ionutils.c

>

>  TEST_PROGS := ion_test.sh

>

> +KSFT_KHDR_INSTALL := 1

> +top_srcdir = ../../../../..

>  include ../../lib.mk

>

>  $(OUTPUT)/ionapp_export: ionapp_export.c ipcsocket.c ionutils.c

> diff --git a/tools/testing/selftests/futex/functional/Makefile b/tools/testing/selftests/futex/functional/Makefile

> index ff8feca49746..ad1eeb14fda7 100644

> --- a/tools/testing/selftests/futex/functional/Makefile

> +++ b/tools/testing/selftests/futex/functional/Makefile

> @@ -18,6 +18,7 @@ TEST_GEN_FILES := \

>

>  TEST_PROGS := run.sh

>

> +top_srcdir = ../../../../..

>  include ../../lib.mk

>

>  $(TEST_GEN_FILES): $(HEADERS)

> diff --git a/tools/testing/selftests/gpio/Makefile b/tools/testing/selftests/gpio/Makefile

> index 1bbb47565c55..4665cdbf1a8d 100644

> --- a/tools/testing/selftests/gpio/Makefile

> +++ b/tools/testing/selftests/gpio/Makefile

> @@ -21,11 +21,8 @@ endef

>  CFLAGS += -O2 -g -std=gnu99 -Wall -I../../../../usr/include/

>  LDLIBS += -lmount -I/usr/include/libmount

>

> -$(BINARIES): ../../../gpio/gpio-utils.o ../../../../usr/include/linux/gpio.h

> +$(BINARIES):| khdr

> +$(BINARIES): ../../../gpio/gpio-utils.o

>

>  ../../../gpio/gpio-utils.o:

>         make ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) -C ../../../gpio

> -

> -../../../../usr/include/linux/gpio.h:

> -       make -C ../../../.. headers_install INSTALL_HDR_PATH=$(shell pwd)/../../../../usr/

> -

> diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile

> index d9d00319b07c..bcb69380bbab 100644

> --- a/tools/testing/selftests/kvm/Makefile

> +++ b/tools/testing/selftests/kvm/Makefile

> @@ -32,9 +32,6 @@ $(LIBKVM_OBJ): $(OUTPUT)/%.o: %.c

>  $(OUTPUT)/libkvm.a: $(LIBKVM_OBJ)

>         $(AR) crs $@ $^

>

> -$(LINUX_HDR_PATH):

> -       make -C $(top_srcdir) headers_install

> -

> -all: $(STATIC_LIBS) $(LINUX_HDR_PATH)

> +all: $(STATIC_LIBS)

>  $(TEST_GEN_PROGS): $(STATIC_LIBS)

> -$(TEST_GEN_PROGS) $(LIBKVM_OBJ): | $(LINUX_HDR_PATH)

> +$(STATIC_LIBS):| khdr

> diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk

> index 17ab36605a8e..0a8e75886224 100644

> --- a/tools/testing/selftests/lib.mk

> +++ b/tools/testing/selftests/lib.mk

> @@ -16,8 +16,20 @@ TEST_GEN_PROGS := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS))

>  TEST_GEN_PROGS_EXTENDED := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS_EXTENDED))

>  TEST_GEN_FILES := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_FILES))

>

> +top_srcdir ?= ../../../..

> +include $(top_srcdir)/scripts/subarch.include

> +ARCH           ?= $(SUBARCH)

> +

>  all: $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES)

>

> +.PHONY: khdr

> +khdr:

> +       make ARCH=$(ARCH) -C $(top_srcdir) headers_install

> +

> +ifdef KSFT_KHDR_INSTALL

> +$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES):| khdr

> +endif

> +

>  .ONESHELL:

>  define RUN_TEST_PRINT_RESULT

>         TEST_HDR_MSG="selftests: "`basename $$PWD`:" $$BASENAME_TEST";  \

> diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile

> index 663e11e85727..d515dabc6b0d 100644

> --- a/tools/testing/selftests/net/Makefile

> +++ b/tools/testing/selftests/net/Makefile

> @@ -15,6 +15,7 @@ TEST_GEN_FILES += udpgso udpgso_bench_tx udpgso_bench_rx

>  TEST_GEN_PROGS = reuseport_bpf reuseport_bpf_cpu reuseport_bpf_numa

>  TEST_GEN_PROGS += reuseport_dualstack reuseaddr_conflict

>

> +KSFT_KHDR_INSTALL := 1

>  include ../lib.mk

>

>  $(OUTPUT)/reuseport_bpf_numa: LDFLAGS += -lnuma

> diff --git a/tools/testing/selftests/networking/timestamping/Makefile b/tools/testing/selftests/networking/timestamping/Makefile

> index a728040edbe1..14cfcf006936 100644

> --- a/tools/testing/selftests/networking/timestamping/Makefile

> +++ b/tools/testing/selftests/networking/timestamping/Makefile

> @@ -5,6 +5,7 @@ TEST_PROGS := hwtstamp_config rxtimestamp timestamping txtimestamp

>

>  all: $(TEST_PROGS)

>

> +top_srcdir = ../../../../..

>  include ../../lib.mk

>

>  clean:

> diff --git a/tools/testing/selftests/vm/Makefile b/tools/testing/selftests/vm/Makefile

> index fdefa2295ddc..58759454b1d0 100644

> --- a/tools/testing/selftests/vm/Makefile

> +++ b/tools/testing/selftests/vm/Makefile

> @@ -25,10 +25,6 @@ TEST_PROGS := run_vmtests

>

>  include ../lib.mk

>

> -$(OUTPUT)/userfaultfd: ../../../../usr/include/linux/kernel.h

>  $(OUTPUT)/userfaultfd: LDLIBS += -lpthread

>

>  $(OUTPUT)/mlock-random-test: LDLIBS += -lcap

> -

> -../../../../usr/include/linux/kernel.h:

> -       make -C ../../../.. headers_install

> --

> 2.17.1

>


Ping.
Shuah Khan July 24, 2018, 5:10 p.m. | #2
On 07/23/2018 02:49 PM, Anders Roxell wrote:
> On Thu, 7 Jun 2018 at 13:09, Anders Roxell <anders.roxell@linaro.org> wrote:

>>

>> If the kernel headers aren't installed we can't build all the tests.

>> Add a new make target rule 'khdr' in the file lib.mk to generate the

>> kernel headers and that gets include for every test-dir Makefile that

>> includes lib.mk If the testdir in turn have its own sub-dirs the

>> top_srcdir needs to be set to the linux-rootdir to be able to generate

>> the kernel headers.

>>

>> Signed-off-by: Anders Roxell <anders.roxell@linaro.org>

>> Reviewed-by: Fathi Boudra <fathi.boudra@linaro.org>

>> ---

>>  Makefile                                           | 14 +-------------

>>  scripts/subarch.include                            | 13 +++++++++++++

>>  tools/testing/selftests/android/Makefile           |  2 +-

>>  tools/testing/selftests/android/ion/Makefile       |  2 ++

>>  tools/testing/selftests/futex/functional/Makefile  |  1 +

>>  tools/testing/selftests/gpio/Makefile              |  7 ++-----

>>  tools/testing/selftests/kvm/Makefile               |  7 ++-----

>>  tools/testing/selftests/lib.mk                     | 12 ++++++++++++

>>  tools/testing/selftests/net/Makefile               |  1 +

>>  .../selftests/networking/timestamping/Makefile     |  1 +

>>  tools/testing/selftests/vm/Makefile                |  4 ----

>>  11 files changed, 36 insertions(+), 28 deletions(-)

>>  create mode 100644 scripts/subarch.include

>>

>> diff --git a/Makefile b/Makefile

>> index 6b9aea95ae3a..8050072300fa 100644

>> --- a/Makefile

>> +++ b/Makefile

>> @@ -286,19 +286,7 @@ KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)

>>  KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)

>>  export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION

>>

>> -# SUBARCH tells the usermode build what the underlying arch is.  That is set

>> -# first, and if a usermode build is happening, the "ARCH=um" on the command

>> -# line overrides the setting of ARCH below.  If a native build is happening,

>> -# then ARCH is assigned, getting whatever value it gets normally, and

>> -# SUBARCH is subsequently ignored.

>> -

>> -SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \

>> -                                 -e s/sun4u/sparc64/ \

>> -                                 -e s/arm.*/arm/ -e s/sa110/arm/ \

>> -                                 -e s/s390x/s390/ -e s/parisc64/parisc/ \

>> -                                 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \

>> -                                 -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ \

>> -                                 -e s/riscv.*/riscv/)

>> +include scripts/subarch.include


What is the reason for this SUBARCH block move to to scripts/subarch.include?
Is this necessary for adding headers install dependency to lib.mk?


>>

>>  # Cross compiling and selecting different set of gcc/bin-utils

>>  # ---------------------------------------------------------------------------

>> diff --git a/scripts/subarch.include b/scripts/subarch.include

>> new file mode 100644

>> index 000000000000..650682821126

>> --- /dev/null

>> +++ b/scripts/subarch.include

>> @@ -0,0 +1,13 @@

>> +# SUBARCH tells the usermode build what the underlying arch is.  That is set

>> +# first, and if a usermode build is happening, the "ARCH=um" on the command

>> +# line overrides the setting of ARCH below.  If a native build is happening,

>> +# then ARCH is assigned, getting whatever value it gets normally, and

>> +# SUBARCH is subsequently ignored.

>> +

>> +SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \

>> +                                 -e s/sun4u/sparc64/ \

>> +                                 -e s/arm.*/arm/ -e s/sa110/arm/ \

>> +                                 -e s/s390x/s390/ -e s/parisc64/parisc/ \

>> +                                 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \

>> +                                 -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ \

>> +                                 -e s/riscv.*/riscv/)


thanks,
-- Shuah
Shuah Khan Aug. 6, 2018, 5:03 p.m. | #3
Hi Anders,

On 07/25/2018 10:08 AM, Anders Roxell wrote:
> On Tue, 24 Jul 2018 at 19:11, Shuah Khan <shuah@kernel.org> wrote:

>>

>> On 07/23/2018 02:49 PM, Anders Roxell wrote:

>>> On Thu, 7 Jun 2018 at 13:09, Anders Roxell <anders.roxell@linaro.org> wrote:

>>>>

>>>> If the kernel headers aren't installed we can't build all the tests.

>>>> Add a new make target rule 'khdr' in the file lib.mk to generate the

>>>> kernel headers and that gets include for every test-dir Makefile that

>>>> includes lib.mk If the testdir in turn have its own sub-dirs the

>>>> top_srcdir needs to be set to the linux-rootdir to be able to generate

>>>> the kernel headers.

>>>>

>>>> Signed-off-by: Anders Roxell <anders.roxell@linaro.org>

>>>> Reviewed-by: Fathi Boudra <fathi.boudra@linaro.org>

>>>> ---

>>>>  Makefile                                           | 14 +-------------

>>>>  scripts/subarch.include                            | 13 +++++++++++++

>>>>  tools/testing/selftests/android/Makefile           |  2 +-

>>>>  tools/testing/selftests/android/ion/Makefile       |  2 ++

>>>>  tools/testing/selftests/futex/functional/Makefile  |  1 +

>>>>  tools/testing/selftests/gpio/Makefile              |  7 ++-----

>>>>  tools/testing/selftests/kvm/Makefile               |  7 ++-----

>>>>  tools/testing/selftests/lib.mk                     | 12 ++++++++++++

>>>>  tools/testing/selftests/net/Makefile               |  1 +

>>>>  .../selftests/networking/timestamping/Makefile     |  1 +

>>>>  tools/testing/selftests/vm/Makefile                |  4 ----

>>>>  11 files changed, 36 insertions(+), 28 deletions(-)

>>>>  create mode 100644 scripts/subarch.include

>>>>

>>>> diff --git a/Makefile b/Makefile

>>>> index 6b9aea95ae3a..8050072300fa 100644

>>>> --- a/Makefile

>>>> +++ b/Makefile

>>>> @@ -286,19 +286,7 @@ KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)

>>>>  KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)

>>>>  export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION

>>>>

>>>> -# SUBARCH tells the usermode build what the underlying arch is.  That is set

>>>> -# first, and if a usermode build is happening, the "ARCH=um" on the command

>>>> -# line overrides the setting of ARCH below.  If a native build is happening,

>>>> -# then ARCH is assigned, getting whatever value it gets normally, and

>>>> -# SUBARCH is subsequently ignored.

>>>> -

>>>> -SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \

>>>> -                                 -e s/sun4u/sparc64/ \

>>>> -                                 -e s/arm.*/arm/ -e s/sa110/arm/ \

>>>> -                                 -e s/s390x/s390/ -e s/parisc64/parisc/ \

>>>> -                                 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \

>>>> -                                 -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ \

>>>> -                                 -e s/riscv.*/riscv/)

>>>> +include scripts/subarch.include

>>

>> What is the reason for this SUBARCH block move to to scripts/subarch.include?

>> Is this necessary for adding headers install dependency to lib.mk?

> 

> This is needed to create headers for cross build.

> 


I am sorry for the delay on this patch. I am going to get this into 4.19.
If anybody has objections, please let me.

Anders! Will be able to rebase the patch and send me the latest. I think
I have Acks from kvm, android, and vm so far.

thanks,
-- Shuah
Masahiro Yamada Aug. 7, 2018, 2:32 a.m. | #4
2018-08-07 2:03 GMT+09:00 Shuah Khan <shuah@kernel.org>:
> Hi Anders,

>

> On 07/25/2018 10:08 AM, Anders Roxell wrote:

>> On Tue, 24 Jul 2018 at 19:11, Shuah Khan <shuah@kernel.org> wrote:

>>>

>>> On 07/23/2018 02:49 PM, Anders Roxell wrote:

>>>> On Thu, 7 Jun 2018 at 13:09, Anders Roxell <anders.roxell@linaro.org> wrote:

>>>>>

>>>>> If the kernel headers aren't installed we can't build all the tests.

>>>>> Add a new make target rule 'khdr' in the file lib.mk to generate the

>>>>> kernel headers and that gets include for every test-dir Makefile that

>>>>> includes lib.mk If the testdir in turn have its own sub-dirs the

>>>>> top_srcdir needs to be set to the linux-rootdir to be able to generate

>>>>> the kernel headers.

>>>>>

>>>>> Signed-off-by: Anders Roxell <anders.roxell@linaro.org>

>>>>> Reviewed-by: Fathi Boudra <fathi.boudra@linaro.org>

>>>>> ---

>>>>>  Makefile                                           | 14 +-------------

>>>>>  scripts/subarch.include                            | 13 +++++++++++++

>>>>>  tools/testing/selftests/android/Makefile           |  2 +-

>>>>>  tools/testing/selftests/android/ion/Makefile       |  2 ++

>>>>>  tools/testing/selftests/futex/functional/Makefile  |  1 +

>>>>>  tools/testing/selftests/gpio/Makefile              |  7 ++-----

>>>>>  tools/testing/selftests/kvm/Makefile               |  7 ++-----

>>>>>  tools/testing/selftests/lib.mk                     | 12 ++++++++++++

>>>>>  tools/testing/selftests/net/Makefile               |  1 +

>>>>>  .../selftests/networking/timestamping/Makefile     |  1 +

>>>>>  tools/testing/selftests/vm/Makefile                |  4 ----

>>>>>  11 files changed, 36 insertions(+), 28 deletions(-)

>>>>>  create mode 100644 scripts/subarch.include

>>>>>

>>>>> diff --git a/Makefile b/Makefile

>>>>> index 6b9aea95ae3a..8050072300fa 100644

>>>>> --- a/Makefile

>>>>> +++ b/Makefile

>>>>> @@ -286,19 +286,7 @@ KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)

>>>>>  KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)

>>>>>  export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION

>>>>>

>>>>> -# SUBARCH tells the usermode build what the underlying arch is.  That is set

>>>>> -# first, and if a usermode build is happening, the "ARCH=um" on the command

>>>>> -# line overrides the setting of ARCH below.  If a native build is happening,

>>>>> -# then ARCH is assigned, getting whatever value it gets normally, and

>>>>> -# SUBARCH is subsequently ignored.

>>>>> -

>>>>> -SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \

>>>>> -                                 -e s/sun4u/sparc64/ \

>>>>> -                                 -e s/arm.*/arm/ -e s/sa110/arm/ \

>>>>> -                                 -e s/s390x/s390/ -e s/parisc64/parisc/ \

>>>>> -                                 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \

>>>>> -                                 -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ \

>>>>> -                                 -e s/riscv.*/riscv/)

>>>>> +include scripts/subarch.include

>>>

>>> What is the reason for this SUBARCH block move to to scripts/subarch.include?

>>> Is this necessary for adding headers install dependency to lib.mk?

>>

>> This is needed to create headers for cross build.

>>

>

> I am sorry for the delay on this patch. I am going to get this into 4.19.

> If anybody has objections, please let me.

>

> Anders! Will be able to rebase the patch and send me the latest. I think

> I have Acks from kvm, android, and vm so far.

>



I may be missing something about the tools/ directory,
but why isn't it like this?


kselftest: headers_install
        $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests run_tests







-- 
Best Regards
Masahiro Yamada
Anders Roxell Aug. 8, 2018, 10:44 a.m. | #5
On Tue, 7 Aug 2018 at 04:33, Masahiro Yamada
<yamada.masahiro@socionext.com> wrote:
>

> 2018-08-07 2:03 GMT+09:00 Shuah Khan <shuah@kernel.org>:

> > Hi Anders,

> >

> > On 07/25/2018 10:08 AM, Anders Roxell wrote:

> >> On Tue, 24 Jul 2018 at 19:11, Shuah Khan <shuah@kernel.org> wrote:

> >>>

> >>> On 07/23/2018 02:49 PM, Anders Roxell wrote:

> >>>> On Thu, 7 Jun 2018 at 13:09, Anders Roxell <anders.roxell@linaro.org> wrote:

> >>>>>

> >>>>> If the kernel headers aren't installed we can't build all the tests.

> >>>>> Add a new make target rule 'khdr' in the file lib.mk to generate the

> >>>>> kernel headers and that gets include for every test-dir Makefile that

> >>>>> includes lib.mk If the testdir in turn have its own sub-dirs the

> >>>>> top_srcdir needs to be set to the linux-rootdir to be able to generate

> >>>>> the kernel headers.

> >>>>>

> >>>>> Signed-off-by: Anders Roxell <anders.roxell@linaro.org>

> >>>>> Reviewed-by: Fathi Boudra <fathi.boudra@linaro.org>

> >>>>> ---

> >>>>>  Makefile                                           | 14 +-------------

> >>>>>  scripts/subarch.include                            | 13 +++++++++++++

> >>>>>  tools/testing/selftests/android/Makefile           |  2 +-

> >>>>>  tools/testing/selftests/android/ion/Makefile       |  2 ++

> >>>>>  tools/testing/selftests/futex/functional/Makefile  |  1 +

> >>>>>  tools/testing/selftests/gpio/Makefile              |  7 ++-----

> >>>>>  tools/testing/selftests/kvm/Makefile               |  7 ++-----

> >>>>>  tools/testing/selftests/lib.mk                     | 12 ++++++++++++

> >>>>>  tools/testing/selftests/net/Makefile               |  1 +

> >>>>>  .../selftests/networking/timestamping/Makefile     |  1 +

> >>>>>  tools/testing/selftests/vm/Makefile                |  4 ----

> >>>>>  11 files changed, 36 insertions(+), 28 deletions(-)

> >>>>>  create mode 100644 scripts/subarch.include

> >>>>>

> >>>>> diff --git a/Makefile b/Makefile

> >>>>> index 6b9aea95ae3a..8050072300fa 100644

> >>>>> --- a/Makefile

> >>>>> +++ b/Makefile

> >>>>> @@ -286,19 +286,7 @@ KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)

> >>>>>  KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)

> >>>>>  export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION

> >>>>>

> >>>>> -# SUBARCH tells the usermode build what the underlying arch is.  That is set

> >>>>> -# first, and if a usermode build is happening, the "ARCH=um" on the command

> >>>>> -# line overrides the setting of ARCH below.  If a native build is happening,

> >>>>> -# then ARCH is assigned, getting whatever value it gets normally, and

> >>>>> -# SUBARCH is subsequently ignored.

> >>>>> -

> >>>>> -SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \

> >>>>> -                                 -e s/sun4u/sparc64/ \

> >>>>> -                                 -e s/arm.*/arm/ -e s/sa110/arm/ \

> >>>>> -                                 -e s/s390x/s390/ -e s/parisc64/parisc/ \

> >>>>> -                                 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \

> >>>>> -                                 -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ \

> >>>>> -                                 -e s/riscv.*/riscv/)

> >>>>> +include scripts/subarch.include

> >>>

> >>> What is the reason for this SUBARCH block move to to scripts/subarch.include?

> >>> Is this necessary for adding headers install dependency to lib.mk?

> >>

> >> This is needed to create headers for cross build.

> >>

> >

> > I am sorry for the delay on this patch. I am going to get this into 4.19.

> > If anybody has objections, please let me.

> >

> > Anders! Will be able to rebase the patch and send me the latest. I think

> > I have Acks from kvm, android, and vm so far.

> >

>

>

> I may be missing something about the tools/ directory,

> but why isn't it like this?

>

>

> kselftest: headers_install

>         $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests run_tests


That wont work if you cross compile, since you wont run the tests
where you build them.
Then you can argue that we should break it up in a build and run rule.
However, my understanding how people just build and run the the tests
for that particular subsystem that they develop for, like:
make -C tools/testing/selftests/<subsystem>/

Cheers,
Anders

Patch

diff --git a/Makefile b/Makefile
index 6b9aea95ae3a..8050072300fa 100644
--- a/Makefile
+++ b/Makefile
@@ -286,19 +286,7 @@  KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
 
-# SUBARCH tells the usermode build what the underlying arch is.  That is set
-# first, and if a usermode build is happening, the "ARCH=um" on the command
-# line overrides the setting of ARCH below.  If a native build is happening,
-# then ARCH is assigned, getting whatever value it gets normally, and
-# SUBARCH is subsequently ignored.
-
-SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \
-				  -e s/sun4u/sparc64/ \
-				  -e s/arm.*/arm/ -e s/sa110/arm/ \
-				  -e s/s390x/s390/ -e s/parisc64/parisc/ \
-				  -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
-				  -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ \
-				  -e s/riscv.*/riscv/)
+include scripts/subarch.include
 
 # Cross compiling and selecting different set of gcc/bin-utils
 # ---------------------------------------------------------------------------
diff --git a/scripts/subarch.include b/scripts/subarch.include
new file mode 100644
index 000000000000..650682821126
--- /dev/null
+++ b/scripts/subarch.include
@@ -0,0 +1,13 @@ 
+# SUBARCH tells the usermode build what the underlying arch is.  That is set
+# first, and if a usermode build is happening, the "ARCH=um" on the command
+# line overrides the setting of ARCH below.  If a native build is happening,
+# then ARCH is assigned, getting whatever value it gets normally, and
+# SUBARCH is subsequently ignored.
+
+SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \
+				  -e s/sun4u/sparc64/ \
+				  -e s/arm.*/arm/ -e s/sa110/arm/ \
+				  -e s/s390x/s390/ -e s/parisc64/parisc/ \
+				  -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
+				  -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ \
+				  -e s/riscv.*/riscv/)
diff --git a/tools/testing/selftests/android/Makefile b/tools/testing/selftests/android/Makefile
index 72c25a3cb658..d9a725478375 100644
--- a/tools/testing/selftests/android/Makefile
+++ b/tools/testing/selftests/android/Makefile
@@ -6,7 +6,7 @@  TEST_PROGS := run.sh
 
 include ../lib.mk
 
-all:
+all: khdr
 	@for DIR in $(SUBDIRS); do		\
 		BUILD_TARGET=$(OUTPUT)/$$DIR;	\
 		mkdir $$BUILD_TARGET  -p;	\
diff --git a/tools/testing/selftests/android/ion/Makefile b/tools/testing/selftests/android/ion/Makefile
index e03695287f76..88cfe88e466f 100644
--- a/tools/testing/selftests/android/ion/Makefile
+++ b/tools/testing/selftests/android/ion/Makefile
@@ -10,6 +10,8 @@  $(TEST_GEN_FILES): ipcsocket.c ionutils.c
 
 TEST_PROGS := ion_test.sh
 
+KSFT_KHDR_INSTALL := 1
+top_srcdir = ../../../../..
 include ../../lib.mk
 
 $(OUTPUT)/ionapp_export: ionapp_export.c ipcsocket.c ionutils.c
diff --git a/tools/testing/selftests/futex/functional/Makefile b/tools/testing/selftests/futex/functional/Makefile
index ff8feca49746..ad1eeb14fda7 100644
--- a/tools/testing/selftests/futex/functional/Makefile
+++ b/tools/testing/selftests/futex/functional/Makefile
@@ -18,6 +18,7 @@  TEST_GEN_FILES := \
 
 TEST_PROGS := run.sh
 
+top_srcdir = ../../../../..
 include ../../lib.mk
 
 $(TEST_GEN_FILES): $(HEADERS)
diff --git a/tools/testing/selftests/gpio/Makefile b/tools/testing/selftests/gpio/Makefile
index 1bbb47565c55..4665cdbf1a8d 100644
--- a/tools/testing/selftests/gpio/Makefile
+++ b/tools/testing/selftests/gpio/Makefile
@@ -21,11 +21,8 @@  endef
 CFLAGS += -O2 -g -std=gnu99 -Wall -I../../../../usr/include/
 LDLIBS += -lmount -I/usr/include/libmount
 
-$(BINARIES): ../../../gpio/gpio-utils.o ../../../../usr/include/linux/gpio.h
+$(BINARIES):| khdr
+$(BINARIES): ../../../gpio/gpio-utils.o
 
 ../../../gpio/gpio-utils.o:
 	make ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) -C ../../../gpio
-
-../../../../usr/include/linux/gpio.h:
-	make -C ../../../.. headers_install INSTALL_HDR_PATH=$(shell pwd)/../../../../usr/
-
diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile
index d9d00319b07c..bcb69380bbab 100644
--- a/tools/testing/selftests/kvm/Makefile
+++ b/tools/testing/selftests/kvm/Makefile
@@ -32,9 +32,6 @@  $(LIBKVM_OBJ): $(OUTPUT)/%.o: %.c
 $(OUTPUT)/libkvm.a: $(LIBKVM_OBJ)
 	$(AR) crs $@ $^
 
-$(LINUX_HDR_PATH):
-	make -C $(top_srcdir) headers_install
-
-all: $(STATIC_LIBS) $(LINUX_HDR_PATH)
+all: $(STATIC_LIBS)
 $(TEST_GEN_PROGS): $(STATIC_LIBS)
-$(TEST_GEN_PROGS) $(LIBKVM_OBJ): | $(LINUX_HDR_PATH)
+$(STATIC_LIBS):| khdr
diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk
index 17ab36605a8e..0a8e75886224 100644
--- a/tools/testing/selftests/lib.mk
+++ b/tools/testing/selftests/lib.mk
@@ -16,8 +16,20 @@  TEST_GEN_PROGS := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS))
 TEST_GEN_PROGS_EXTENDED := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS_EXTENDED))
 TEST_GEN_FILES := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_FILES))
 
+top_srcdir ?= ../../../..
+include $(top_srcdir)/scripts/subarch.include
+ARCH		?= $(SUBARCH)
+
 all: $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES)
 
+.PHONY: khdr
+khdr:
+	make ARCH=$(ARCH) -C $(top_srcdir) headers_install
+
+ifdef KSFT_KHDR_INSTALL
+$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES):| khdr
+endif
+
 .ONESHELL:
 define RUN_TEST_PRINT_RESULT
 	TEST_HDR_MSG="selftests: "`basename $$PWD`:" $$BASENAME_TEST";	\
diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile
index 663e11e85727..d515dabc6b0d 100644
--- a/tools/testing/selftests/net/Makefile
+++ b/tools/testing/selftests/net/Makefile
@@ -15,6 +15,7 @@  TEST_GEN_FILES += udpgso udpgso_bench_tx udpgso_bench_rx
 TEST_GEN_PROGS = reuseport_bpf reuseport_bpf_cpu reuseport_bpf_numa
 TEST_GEN_PROGS += reuseport_dualstack reuseaddr_conflict
 
+KSFT_KHDR_INSTALL := 1
 include ../lib.mk
 
 $(OUTPUT)/reuseport_bpf_numa: LDFLAGS += -lnuma
diff --git a/tools/testing/selftests/networking/timestamping/Makefile b/tools/testing/selftests/networking/timestamping/Makefile
index a728040edbe1..14cfcf006936 100644
--- a/tools/testing/selftests/networking/timestamping/Makefile
+++ b/tools/testing/selftests/networking/timestamping/Makefile
@@ -5,6 +5,7 @@  TEST_PROGS := hwtstamp_config rxtimestamp timestamping txtimestamp
 
 all: $(TEST_PROGS)
 
+top_srcdir = ../../../../..
 include ../../lib.mk
 
 clean:
diff --git a/tools/testing/selftests/vm/Makefile b/tools/testing/selftests/vm/Makefile
index fdefa2295ddc..58759454b1d0 100644
--- a/tools/testing/selftests/vm/Makefile
+++ b/tools/testing/selftests/vm/Makefile
@@ -25,10 +25,6 @@  TEST_PROGS := run_vmtests
 
 include ../lib.mk
 
-$(OUTPUT)/userfaultfd: ../../../../usr/include/linux/kernel.h
 $(OUTPUT)/userfaultfd: LDLIBS += -lpthread
 
 $(OUTPUT)/mlock-random-test: LDLIBS += -lcap
-
-../../../../usr/include/linux/kernel.h:
-	make -C ../../../.. headers_install