Hi,
On 9/5/19 11:27 PM, Cristian Marussi wrote:
> Hi Amit
>
> On 03/09/2019 10:26, Amit Kachhap wrote:
>>
>> Hi Cristian,
>>
>> On 9/2/19 4:59 PM, Cristian Marussi wrote:
>>> Add a new arm64-specific empty subsystem amongst TARGETS of KSFT build
>>> framework; keep these new arm64 KSFT testcases separated into distinct
>>> subdirs inside tools/testing/selftests/arm64/ depending on the specific
>>> subsystem targeted.
>>>
>>> Add into toplevel arm64 KSFT Makefile a mechanism to guess the effective
>>> location of Kernel headers as installed by KSFT framework.
>>>
>>> Merge with
>>>
>>> commit 9ce1263033cd ("selftests, arm64: add a selftest for passing
>>> tagged pointers to kernel")
>>>
>>> while moving such KSFT tags tests inside their own subdirectory
>>> (arm64/tags).
>>>
>>> Signed-off-by: Cristian Marussi <cristian.marussi@xxxxxxx>
>>> ---
>>> v4 --> v5
>>> - rebased on arm64/for-next/core
>>> - merged this patch with KSFT arm64 tags patch, while moving the latter
>>> into its own subdir
>>> - moved kernel header includes search mechanism from KSFT arm64
>>> SIGNAL Makefile
>> This approach breaks the compilation of individual test cases which need
>> to export includes individually.
>>
>> make -C tools/testing/selftests/arm64/signal
>>
>> ../../lib.mk:25: ../../../../scripts/subarch.include: No such file or
>> directory
>> Makefile:25: warning: overriding recipe for target 'clean'
>> ../../lib.mk:123: warning: ignoring old recipe for target 'clean'
>> make: *** No rule to make target '../../../../scripts/subarch.include'.
>> Stop.
>>
>> However tags test works well,
>> make -C tools/testing/selftests/arm64/tags
>>
>> aarch64-none-linux-gnu-gcc tags_test.c -o
>> /home/amikac01/work/MTE_WORK/linux-server/linux/tools/testing/selftests/arm64/tags/tags_test
>>
>>
>> Thanks,
>> Amit Daniel
>>
>
> So at the end I think I'll opt for the following in V6 regarding the issue of being able to build specific
> KSFT arm64 subsystems while properly searching kernel headers (and keeping compatible with the KSFT
> framework completely):
>
> - only arm64 toplevel KSFT Makefile searches for the kernel headers location for all and propagates down the info
>
> - you can also now optionally specify which arm64 subsystem to build (to avoid have to build, say, all of signal/
> if you are not interested into....a sort of standalone mode without all the burden of the old standalone mode)
ok.
>
> So you can issue:
>
> $ make TARGETS=arm64 kselftest
>
> or similarly:
>
> $ make -C tools/testing/selftests TARGETS=arm64 \
> INSTALL_PATH=<your-installation-path> install
>
> or select subsystems:
>
> $ make -C tools/testing/selftests TARGETS=arm64 SUBTARGETS="tags signal" \
> INSTALL_PATH=<your-installation-path> install
This option will be useful as it is better to compile just one subtarget
in development phase.
Thanks,
Amit
>
> with all of the above looking for the K headers in the proper place and without
> duplicating the search code in multiple places. (bugs apart :D)
>
> Thanks
>
> Cristian
>
>>> - export proper top_srcdir ENV for lib.mk
>>> v3 --> v4
>>> - comment reword
>>> - simplified documentation in README
>>> - dropped README about standalone
>>> ---
>>> tools/testing/selftests/Makefile | 1 +
>>> tools/testing/selftests/arm64/Makefile | 70 +++++++++++++++++--
>>> tools/testing/selftests/arm64/README | 20 ++++++
>>> tools/testing/selftests/arm64/tags/Makefile | 10 +++
>>> .../arm64/{ => tags}/run_tags_test.sh | 0
>>> .../selftests/arm64/{ => tags}/tags_test.c | 0
>>> 6 files changed, 95 insertions(+), 6 deletions(-)
>>> create mode 100644 tools/testing/selftests/arm64/README
>>> create mode 100644 tools/testing/selftests/arm64/tags/Makefile
>>> rename tools/testing/selftests/arm64/{ => tags}/run_tags_test.sh (100%)
>>> rename tools/testing/selftests/arm64/{ => tags}/tags_test.c (100%)
>>>
>>> diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
>>> index 25b43a8c2b15..1722dae9381a 100644
>>> --- a/tools/testing/selftests/Makefile
>>> +++ b/tools/testing/selftests/Makefile
>>> @@ -1,5 +1,6 @@
>>> # SPDX-License-Identifier: GPL-2.0
>>> TARGETS = android
>>> +TARGETS += arm64
>>> TARGETS += bpf
>>> TARGETS += breakpoints
>>> TARGETS += capabilities
>>> diff --git a/tools/testing/selftests/arm64/Makefile b/tools/testing/selftests/arm64/Makefile
>>> index a61b2e743e99..5dbb0ffdfc9a 100644
>>> --- a/tools/testing/selftests/arm64/Makefile
>>> +++ b/tools/testing/selftests/arm64/Makefile
>>> @@ -1,11 +1,69 @@
>>> # SPDX-License-Identifier: GPL-2.0
>>> +# Copyright (C) 2019 ARM Limited
>>>
>>> -# ARCH can be overridden by the user for cross compiling
>>> -ARCH ?= $(shell uname -m 2>/dev/null || echo not)
>>> +# When ARCH not overridden for crosscompiling, lookup machine
>>> +ARCH ?= $(shell uname -m)
>>> +ARCH := $(shell echo $(ARCH) | sed -e s/aarch64/arm64/)
>>>
>>> -ifneq (,$(filter $(ARCH),aarch64 arm64))
>>> -TEST_GEN_PROGS := tags_test
>>> -TEST_PROGS := run_tags_test.sh
>>> +ifeq ("x$(ARCH)", "xarm64")
>>> +SUBDIRS := tags
>>> +else
>>> +SUBDIRS :=
>>> endif
>>>
>>> -include ../lib.mk
>>> +CFLAGS := -Wall -O2 -g
>>> +
>>> +# A proper top_srcdir is needed by KSFT(lib.mk)
>>> +top_srcdir = ../../../../..
>>> +
>>> +# Additional include paths needed by kselftest.h and local headers
>>> +CFLAGS += -I$(top_srcdir)/tools/testing/selftests/
>>> +
>>> +# Guessing where the Kernel headers could have been installed
>>> +# depending on ENV config
>>> +ifeq ($(KBUILD_OUTPUT),)
>>> +khdr_dir = $(top_srcdir)/usr/include
>>> +else
>>> +# the KSFT preferred location when KBUILD_OUTPUT is set
>>> +khdr_dir = $(KBUILD_OUTPUT)/kselftest/usr/include
>>> +endif
>>> +
>>> +CFLAGS += -I$(khdr_dir)
>>> +
>>> +export CC
>>> +export CFLAGS
>>> +export top_srcdir
>>> +
>>> +all:
>>> + @for DIR in $(SUBDIRS); do \
>>> + BUILD_TARGET=$(OUTPUT)/$$DIR; \
>>> + mkdir -p $$BUILD_TARGET; \
>>> + make OUTPUT=$$BUILD_TARGET -C $$DIR $@; \
>>> + done
>>> +
>>> +install: all
>>> + @for DIR in $(SUBDIRS); do \
>>> + BUILD_TARGET=$(OUTPUT)/$$DIR; \
>>> + make OUTPUT=$$BUILD_TARGET -C $$DIR $@; \
>>> + done
>>> +
>>> +run_tests: all
>>> + @for DIR in $(SUBDIRS); do \
>>> + BUILD_TARGET=$(OUTPUT)/$$DIR; \
>>> + make OUTPUT=$$BUILD_TARGET -C $$DIR $@; \
>>> + done
>>> +
>>> +# Avoid any output on non arm64 on emit_tests
>>> +emit_tests: all
>>> + @for DIR in $(SUBDIRS); do \
>>> + BUILD_TARGET=$(OUTPUT)/$$DIR; \
>>> + make OUTPUT=$$BUILD_TARGET -C $$DIR $@; \
>>> + done
>>> +
>>> +clean:
>>> + @for DIR in $(SUBDIRS); do \
>>> + BUILD_TARGET=$(OUTPUT)/$$DIR; \
>>> + make OUTPUT=$$BUILD_TARGET -C $$DIR $@; \
>>> + done
>>> +
>>> +.PHONY: all clean install run_tests emit_tests
>>> diff --git a/tools/testing/selftests/arm64/README b/tools/testing/selftests/arm64/README
>>> new file mode 100644
>>> index 000000000000..aca892e62a6c
>>> --- /dev/null
>>> +++ b/tools/testing/selftests/arm64/README
>>> @@ -0,0 +1,20 @@
>>> +KSelfTest ARM64
>>> +===============
>>> +
>>> +- These tests are arm64 specific and so not built or run but just skipped
>>> + completely when env-variable ARCH is found to be different than 'arm64'
>>> + and `uname -m` reports other than 'aarch64'.
>>> +
>>> +- Holding true the above, ARM64 KSFT tests can be run within the KSelfTest
>>> + framework using standard Linux top-level-makefile targets:
>>> +
>>> + $ make TARGETS=arm64 kselftest-clean
>>> + $ make TARGETS=arm64 kselftest
>>> +
>>> + or
>>> +
>>> + $ make -C tools/testing/selftests TARGETS=arm64 \
>>> + INSTALL_PATH=<your-installation-path> install
>>> +
>>> + Further details on building and running KFST can be found in:
>>> + Documentation/dev-tools/kselftest.rst
>>> diff --git a/tools/testing/selftests/arm64/tags/Makefile b/tools/testing/selftests/arm64/tags/Makefile
>>> new file mode 100644
>>> index 000000000000..76205533135b
>>> --- /dev/null
>>> +++ b/tools/testing/selftests/arm64/tags/Makefile
>>> @@ -0,0 +1,10 @@
>>> +# SPDX-License-Identifier: GPL-2.0
>>> +# ARCH can be overridden by the user for cross compiling
>>> +ARCH ?= $(shell uname -m 2>/dev/null || echo not)
>>> +
>>> +ifneq (,$(filter $(ARCH),aarch64 arm64))
>>> +TEST_GEN_PROGS := tags_test
>>> +TEST_PROGS := run_tags_test.sh
>>> +endif
>>> +
>>> +include ../../lib.mk
>>> diff --git a/tools/testing/selftests/arm64/run_tags_test.sh b/tools/testing/selftests/arm64/tags/run_tags_test.sh
>>> similarity index 100%
>>> rename from tools/testing/selftests/arm64/run_tags_test.sh
>>> rename to tools/testing/selftests/arm64/tags/run_tags_test.sh
>>> diff --git a/tools/testing/selftests/arm64/tags_test.c b/tools/testing/selftests/arm64/tags/tags_test.c
>>> similarity index 100%
>>> rename from tools/testing/selftests/arm64/tags_test.c
>>> rename to tools/testing/selftests/arm64/tags/tags_test.c
>>>
>
>
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