| Message ID | 20210415072700.147125-2-masahiroy@kernel.org |
|---|---|
| State | New |
| Headers | show |
| Series | None | expand |
On Thu, Apr 15, 2021 at 4:40 PM Paolo Bonzini <pbonzini@redhat.com> wrote: > > On 15/04/21 09:27, Masahiro Yamada wrote: > > Since commit d9f4ff50d2aa ("kbuild: spilt cc-option and friends to > > scripts/Makefile.compiler"), some kselftests fail to build. > > > > The tools/ directory opted out Kbuild, and went in a different > > direction. They copy any kind of files to the tools/ directory > > in order to do whatever they want to do in their world. > > > > tools/build/Build.include mimics scripts/Kbuild.include, but some > > tool Makefiles included the Kbuild one to import a feature that is > > missing in tools/build/Build.include: > > > > - Commit ec04aa3ae87b ("tools/thermal: tmon: use "-fstack-protector" > > only if supported") included scripts/Kbuild.include from > > tools/thermal/tmon/Makefile to import the cc-option macro. > > > > - Commit c2390f16fc5b ("selftests: kvm: fix for compilers that do > > not support -no-pie") included scripts/Kbuild.include from > > tools/testing/selftests/kvm/Makefile to import the try-run macro. > > > > - Commit 9cae4ace80ef ("selftests/bpf: do not ignore clang > > failures") included scripts/Kbuild.include from > > tools/testing/selftests/bpf/Makefile to import the .DELETE_ON_ERROR > > target. > > > > - Commit 0695f8bca93e ("selftests/powerpc: Handle Makefile for > > unrecognized option") included scripts/Kbuild.include from > > tools/testing/selftests/powerpc/pmu/ebb/Makefile to import the > > try-run macro. > > > > Copy what they want there, and stop including scripts/Kbuild.include > > from the tool Makefiles. > > I think it would make sense to add try-run, cc-option and > .DELETE_ON_ERROR to tools/build/Build.include? To be safe, I just copy-pasted what the makefiles need. If someone wants to refactor the tool build system, that is fine, but, to me, I do not see consistent rules or policy under tools/.
On 15/04/21 10:04, Masahiro Yamada wrote: > On Thu, Apr 15, 2021 at 4:40 PM Paolo Bonzini <pbonzini@redhat.com> wrote: >> I think it would make sense to add try-run, cc-option and >> .DELETE_ON_ERROR to tools/build/Build.include? > > To be safe, I just copy-pasted what the makefiles need. > If someone wants to refactor the tool build system, that is fine, > but, to me, I do not see consistent rules or policy under tools/. "Please put this in a common file instead of introducing duplication" is not asking for wholesale refactoring. Paolo
On 15.04.21 10:06, Christian Borntraeger wrote: > > On 15.04.21 09:27, Masahiro Yamada wrote: >> Since commit d9f4ff50d2aa ("kbuild: spilt cc-option and friends to >> scripts/Makefile.compiler"), some kselftests fail to build. >> >> The tools/ directory opted out Kbuild, and went in a different >> direction. They copy any kind of files to the tools/ directory >> in order to do whatever they want to do in their world. >> >> tools/build/Build.include mimics scripts/Kbuild.include, but some >> tool Makefiles included the Kbuild one to import a feature that is >> missing in tools/build/Build.include: >> >> - Commit ec04aa3ae87b ("tools/thermal: tmon: use "-fstack-protector" >> only if supported") included scripts/Kbuild.include from >> tools/thermal/tmon/Makefile to import the cc-option macro. >> >> - Commit c2390f16fc5b ("selftests: kvm: fix for compilers that do >> not support -no-pie") included scripts/Kbuild.include from >> tools/testing/selftests/kvm/Makefile to import the try-run macro. >> >> - Commit 9cae4ace80ef ("selftests/bpf: do not ignore clang >> failures") included scripts/Kbuild.include from >> tools/testing/selftests/bpf/Makefile to import the .DELETE_ON_ERROR >> target. >> >> - Commit 0695f8bca93e ("selftests/powerpc: Handle Makefile for >> unrecognized option") included scripts/Kbuild.include from >> tools/testing/selftests/powerpc/pmu/ebb/Makefile to import the >> try-run macro. >> >> Copy what they want there, and stop including scripts/Kbuild.include >> from the tool Makefiles. >> >> Link: https://lore.kernel.org/lkml/86dadf33-70f7-a5ac-cb8c-64966d2f45a1@linux.ibm.com/ >> Fixes: d9f4ff50d2aa ("kbuild: spilt cc-option and friends to scripts/Makefile.compiler") >> Reported-by: Janosch Frank <frankja@linux.ibm.com> >> Reported-by: Christian Borntraeger <borntraeger@de.ibm.com> >> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> > > When applying this on top of d9f4ff50d2aa ("kbuild: spilt cc-option and friends to scripts/Makefile.compiler") > > I still do get > > # ==== Test Assertion Failure ==== > # lib/kvm_util.c:142: vm->fd >= 0 > # pid=315635 tid=315635 - Invalid argument > # 1 0x0000000001002f4b: vm_open at kvm_util.c:142 > # 2 (inlined by) vm_create at kvm_util.c:258 > # 3 0x00000000010015ef: test_add_max_memory_regions at set_memory_region_test.c:351 > # 4 (inlined by) main at set_memory_region_test.c:397 > # 5 0x000003ff971abb89: ?? ??:0 > # 6 0x00000000010017ad: .annobin_abi_note.c.hot at crt1.o:? > # KVM_CREATE_VM ioctl failed, rc: -1 errno: 22 > not ok 7 selftests: kvm: set_memory_region_test # exit=254 > > and the testcase compilation does not pickup the pgste option. What does work is the following: diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile index a6d61f451f88..d9c6d9c2069e 100644 --- a/tools/testing/selftests/kvm/Makefile +++ b/tools/testing/selftests/kvm/Makefile @@ -1,5 +1,6 @@ # SPDX-License-Identifier: GPL-2.0-only include ../../../../scripts/Kbuild.include +include ../../../../scripts/Makefile.compiler all: as it does pickup the linker option handling.
On Fri, Apr 16, 2021 at 2:56 PM Christian Borntraeger <borntraeger@de.ibm.com> wrote: > > > On 15.04.21 10:06, Christian Borntraeger wrote: > > > > On 15.04.21 09:27, Masahiro Yamada wrote: > >> Since commit d9f4ff50d2aa ("kbuild: spilt cc-option and friends to > >> scripts/Makefile.compiler"), some kselftests fail to build. > >> > >> The tools/ directory opted out Kbuild, and went in a different > >> direction. They copy any kind of files to the tools/ directory > >> in order to do whatever they want to do in their world. > >> > >> tools/build/Build.include mimics scripts/Kbuild.include, but some > >> tool Makefiles included the Kbuild one to import a feature that is > >> missing in tools/build/Build.include: > >> > >> - Commit ec04aa3ae87b ("tools/thermal: tmon: use "-fstack-protector" > >> only if supported") included scripts/Kbuild.include from > >> tools/thermal/tmon/Makefile to import the cc-option macro. > >> > >> - Commit c2390f16fc5b ("selftests: kvm: fix for compilers that do > >> not support -no-pie") included scripts/Kbuild.include from > >> tools/testing/selftests/kvm/Makefile to import the try-run macro. > >> > >> - Commit 9cae4ace80ef ("selftests/bpf: do not ignore clang > >> failures") included scripts/Kbuild.include from > >> tools/testing/selftests/bpf/Makefile to import the .DELETE_ON_ERROR > >> target. > >> > >> - Commit 0695f8bca93e ("selftests/powerpc: Handle Makefile for > >> unrecognized option") included scripts/Kbuild.include from > >> tools/testing/selftests/powerpc/pmu/ebb/Makefile to import the > >> try-run macro. > >> > >> Copy what they want there, and stop including scripts/Kbuild.include > >> from the tool Makefiles. > >> > >> Link: https://lore.kernel.org/lkml/86dadf33-70f7-a5ac-cb8c-64966d2f45a1@linux.ibm.com/ > >> Fixes: d9f4ff50d2aa ("kbuild: spilt cc-option and friends to scripts/Makefile.compiler") > >> Reported-by: Janosch Frank <frankja@linux.ibm.com> > >> Reported-by: Christian Borntraeger <borntraeger@de.ibm.com> > >> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> > > > > When applying this on top of d9f4ff50d2aa ("kbuild: spilt cc-option and friends to scripts/Makefile.compiler") > > > > I still do get > > > > # ==== Test Assertion Failure ==== > > # lib/kvm_util.c:142: vm->fd >= 0 > > # pid=315635 tid=315635 - Invalid argument > > # 1 0x0000000001002f4b: vm_open at kvm_util.c:142 > > # 2 (inlined by) vm_create at kvm_util.c:258 > > # 3 0x00000000010015ef: test_add_max_memory_regions at set_memory_region_test.c:351 > > # 4 (inlined by) main at set_memory_region_test.c:397 > > # 5 0x000003ff971abb89: ?? ??:0 > > # 6 0x00000000010017ad: .annobin_abi_note.c.hot at crt1.o:? > > # KVM_CREATE_VM ioctl failed, rc: -1 errno: 22 > > not ok 7 selftests: kvm: set_memory_region_test # exit=254 > > > > and the testcase compilation does not pickup the pgste option. > > What does work is the following: > diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile > index a6d61f451f88..d9c6d9c2069e 100644 > --- a/tools/testing/selftests/kvm/Makefile > +++ b/tools/testing/selftests/kvm/Makefile > @@ -1,5 +1,6 @@ > # SPDX-License-Identifier: GPL-2.0-only > include ../../../../scripts/Kbuild.include > +include ../../../../scripts/Makefile.compiler > > all: > > > as it does pickup the linker option handling. Kbuild and the tools are divorced. They cannot be married unless the tools/ build system is largely refactored. That will be a tons of works (and I am not sure if it is welcome). The Kbuild refactoring should not be bothered by the tools. For now, I want them separated from each other. -- Best Regards Masahiro Yamada
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 044bfdcf5b74..d872b9f41543 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -1,5 +1,4 @@ # SPDX-License-Identifier: GPL-2.0 -include ../../../../scripts/Kbuild.include include ../../../scripts/Makefile.arch include ../../../scripts/Makefile.include @@ -476,3 +475,5 @@ EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \ prog_tests/tests.h map_tests/tests.h verifier/tests.h \ feature \ $(addprefix $(OUTPUT)/,*.o *.skel.h no_alu32 bpf_gcc bpf_testmod.ko) + +.DELETE_ON_ERROR: diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile index a6d61f451f88..8b45bc417d83 100644 --- a/tools/testing/selftests/kvm/Makefile +++ b/tools/testing/selftests/kvm/Makefile @@ -1,5 +1,15 @@ # SPDX-License-Identifier: GPL-2.0-only -include ../../../../scripts/Kbuild.include + +TMPOUT = .tmp_$$$$ + +try-run = $(shell set -e; \ + TMP=$(TMPOUT)/tmp; \ + mkdir -p $(TMPOUT); \ + trap "rm -rf $(TMPOUT)" EXIT; \ + if ($(1)) >/dev/null 2>&1; \ + then echo "$(2)"; \ + else echo "$(3)"; \ + fi) all: diff --git a/tools/testing/selftests/powerpc/pmu/ebb/Makefile b/tools/testing/selftests/powerpc/pmu/ebb/Makefile index af3df79d8163..d5d3e869df93 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/Makefile +++ b/tools/testing/selftests/powerpc/pmu/ebb/Makefile @@ -1,5 +1,4 @@ # SPDX-License-Identifier: GPL-2.0 -include ../../../../../../scripts/Kbuild.include noarg: $(MAKE) -C ../../ @@ -8,6 +7,16 @@ noarg: CFLAGS += -m64 TMPOUT = $(OUTPUT)/TMPDIR/ + +try-run = $(shell set -e; \ + TMP=$(TMPOUT)/tmp; \ + mkdir -p $(TMPOUT); \ + trap "rm -rf $(TMPOUT)" EXIT; \ + if ($(1)) >/dev/null 2>&1; \ + then echo "$(2)"; \ + else echo "$(3)"; \ + fi) + # Toolchains may build PIE by default which breaks the assembly no-pie-option := $(call try-run, echo 'int main() { return 0; }' | \ $(CC) -Werror $(KBUILD_CPPFLAGS) $(CC_OPTION_CFLAGS) -no-pie -x c - -o "$$TMP", -no-pie) diff --git a/tools/thermal/tmon/Makefile b/tools/thermal/tmon/Makefile index 59e417ec3e13..92a683e4866c 100644 --- a/tools/thermal/tmon/Makefile +++ b/tools/thermal/tmon/Makefile @@ -1,6 +1,21 @@ # SPDX-License-Identifier: GPL-2.0 -# We need this for the "cc-option" macro. -include ../../../scripts/Kbuild.include + +TMPOUT = .tmp_$$$$ + +try-run = $(shell set -e; \ + TMP=$(TMPOUT)/tmp; \ + mkdir -p $(TMPOUT); \ + trap "rm -rf $(TMPOUT)" EXIT; \ + if ($(1)) >/dev/null 2>&1; \ + then echo "$(2)"; \ + else echo "$(3)"; \ + fi) + +__cc-option = $(call try-run,\ + $(1) -Werror $(2) $(3) -c -x c /dev/null -o "$$TMP",$(3),$(4)) + +cc-option = $(call __cc-option, $(CC),\ + $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS),$(1),$(2)) VERSION = 1.0
Since commit d9f4ff50d2aa ("kbuild: spilt cc-option and friends to scripts/Makefile.compiler"), some kselftests fail to build. The tools/ directory opted out Kbuild, and went in a different direction. They copy any kind of files to the tools/ directory in order to do whatever they want to do in their world. tools/build/Build.include mimics scripts/Kbuild.include, but some tool Makefiles included the Kbuild one to import a feature that is missing in tools/build/Build.include: - Commit ec04aa3ae87b ("tools/thermal: tmon: use "-fstack-protector" only if supported") included scripts/Kbuild.include from tools/thermal/tmon/Makefile to import the cc-option macro. - Commit c2390f16fc5b ("selftests: kvm: fix for compilers that do not support -no-pie") included scripts/Kbuild.include from tools/testing/selftests/kvm/Makefile to import the try-run macro. - Commit 9cae4ace80ef ("selftests/bpf: do not ignore clang failures") included scripts/Kbuild.include from tools/testing/selftests/bpf/Makefile to import the .DELETE_ON_ERROR target. - Commit 0695f8bca93e ("selftests/powerpc: Handle Makefile for unrecognized option") included scripts/Kbuild.include from tools/testing/selftests/powerpc/pmu/ebb/Makefile to import the try-run macro. Copy what they want there, and stop including scripts/Kbuild.include from the tool Makefiles. Link: https://lore.kernel.org/lkml/86dadf33-70f7-a5ac-cb8c-64966d2f45a1@linux.ibm.com/ Fixes: d9f4ff50d2aa ("kbuild: spilt cc-option and friends to scripts/Makefile.compiler") Reported-by: Janosch Frank <frankja@linux.ibm.com> Reported-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> --- tools/testing/selftests/bpf/Makefile | 3 ++- tools/testing/selftests/kvm/Makefile | 12 +++++++++++- .../selftests/powerpc/pmu/ebb/Makefile | 11 ++++++++++- tools/thermal/tmon/Makefile | 19 +++++++++++++++++-- 4 files changed, 40 insertions(+), 5 deletions(-)