linux-kernel - Re: [PATCH v2 3/5] selftests: Include KHDR

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Message-ID: <CAG4es9XPLhHhH-Hfm3_m5zLLtiB1zme8pAazMhErMpHqJcAMmw@mail.gmail.com>
Date: Wed, 8 May 2024 17:29:07 -0700
From: Edward Liaw <edliaw@...gle.com>
To: John Hubbard <jhubbard@...dia.com>
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Subject: Re: [PATCH v2 3/5] selftests: Include KHDR_INCLUDES in Makefile

On Wed, May 8, 2024 at 2:41 PM John Hubbard <jhubbard@...dia.com> wrote:
>
> On 5/7/24 2:38 PM, Edward Liaw wrote:
> > Add KHDR_INCLUDES to CFLAGS to pull in the kselftest harness
> > dependencies (-D_GNU_SOURCE).
> >
> > Fixes: 809216233555 ("selftests/harness: remove use of LINE_MAX")
> > Signed-off-by: Edward Liaw <edliaw@...gle.com>
> > ---
> >   tools/testing/selftests/alsa/Makefile                  | 2 +-
> >   tools/testing/selftests/arm64/signal/Makefile          | 2 +-
> >   tools/testing/selftests/exec/Makefile                  | 2 +-
> >   tools/testing/selftests/filesystems/overlayfs/Makefile | 2 +-
> >   tools/testing/selftests/hid/Makefile                   | 2 +-
> >   tools/testing/selftests/nci/Makefile                   | 2 +-
> >   tools/testing/selftests/prctl/Makefile                 | 2 ++
> >   tools/testing/selftests/proc/Makefile                  | 2 +-
> >   tools/testing/selftests/riscv/mm/Makefile              | 2 +-
> >   tools/testing/selftests/rtc/Makefile                   | 2 +-
> >   tools/testing/selftests/tmpfs/Makefile                 | 2 +-
> >   11 files changed, 12 insertions(+), 10 deletions(-)
>
> Hi Edward,
>
> Seeing as how these all include lib.mk, and all use CFLAGS, is there
> any reason not to simply fix this in lib.mk instead? Like this:
>
> diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/libmk
> index 7fa4a96e26ed..df72610e0d2b 100644
> --- a/tools/testing/selftests/lib.mk
> +++ b/tools/testing/selftests/lib.mk
> @@ -170,6 +170,8 @@ clean: $(if $(TEST_GEN_MODS_DIR),clean_mods_dir)
>   CFLAGS += $(USERCFLAGS)
>   LDFLAGS += $(USERLDFLAGS)
>
> +CFLAGS += $(KHDR_INCLUDES)
> +
>   # When make O= with kselftest target from main level
>   # the following aren't defined.
>   #
>

Or how about just adding -D_GNU_SOURCE to CFLAGS then?



>
> thanks,
> --
> John Hubbard
> NVIDIA
>
> >
> > diff --git a/tools/testing/selftests/alsa/Makefile b/tools/testing/selftests/alsa/Makefile
> > index 5af9ba8a4645..9a0ef194522c 100644
> > --- a/tools/testing/selftests/alsa/Makefile
> > +++ b/tools/testing/selftests/alsa/Makefile
> > @@ -6,7 +6,7 @@ LDLIBS += $(shell pkg-config --libs alsa)
> >   ifeq ($(LDLIBS),)
> >   LDLIBS += -lasound
> >   endif
> > -CFLAGS += -L$(OUTPUT) -Wl,-rpath=./
> > +CFLAGS += $(KHDR_INCLUDES) -L$(OUTPUT) -Wl,-rpath=./
> >
> >   LDLIBS+=-lpthread
> >
> > diff --git a/tools/testing/selftests/arm64/signal/Makefile b/tools/testing/selftests/arm64/signal/Makefile
> > index 8f5febaf1a9a..ae682ade615d 100644
> > --- a/tools/testing/selftests/arm64/signal/Makefile
> > +++ b/tools/testing/selftests/arm64/signal/Makefile
> > @@ -2,7 +2,7 @@
> >   # Copyright (C) 2019 ARM Limited
> >
> >   # Additional include paths needed by kselftest.h and local headers
> > -CFLAGS += -D_GNU_SOURCE -std=gnu99 -I.
> > +CFLAGS += $(KHDR_INCLUDES) -std=gnu99 -I.
> >
> >   SRCS := $(filter-out testcases/testcases.c,$(wildcard testcases/*.c))
> >   PROGS := $(patsubst %.c,%,$(SRCS))
> > diff --git a/tools/testing/selftests/exec/Makefile b/tools/testing/selftests/exec/Makefile
> > index fb4472ddffd8..15e78ec7c55e 100644
> > --- a/tools/testing/selftests/exec/Makefile
> > +++ b/tools/testing/selftests/exec/Makefile
> > @@ -1,7 +1,7 @@
> >   # SPDX-License-Identifier: GPL-2.0
> >   CFLAGS = -Wall
> >   CFLAGS += -Wno-nonnull
> > -CFLAGS += -D_GNU_SOURCE
> > +CFLAGS += $(KHDR_INCLUDES)
> >
> >   TEST_PROGS := binfmt_script.py
> >   TEST_GEN_PROGS := execveat load_address_4096 load_address_2097152 load_address_16777216 non-regular
> > diff --git a/tools/testing/selftests/filesystems/overlayfs/Makefile b/tools/testing/selftests/filesystems/overlayfs/Makefile
> > index 56b2b48a765b..6c29c963c7a8 100644
> > --- a/tools/testing/selftests/filesystems/overlayfs/Makefile
> > +++ b/tools/testing/selftests/filesystems/overlayfs/Makefile
> > @@ -2,6 +2,6 @@
> >
> >   TEST_GEN_PROGS := dev_in_maps
> >
> > -CFLAGS := -Wall -Werror
> > +CFLAGS := -Wall -Werror $(KHDR_INCLUDES)
> >
> >   include ../../lib.mk
> > diff --git a/tools/testing/selftests/hid/Makefile b/tools/testing/selftests/hid/Makefile
> > index 2b5ea18bde38..0661b34488ef 100644
> > --- a/tools/testing/selftests/hid/Makefile
> > +++ b/tools/testing/selftests/hid/Makefile
> > @@ -21,7 +21,7 @@ CXX ?= $(CROSS_COMPILE)g++
> >
> >   HOSTPKG_CONFIG := pkg-config
> >
> > -CFLAGS += -g -O0 -rdynamic -Wall -Werror -I$(OUTPUT)
> > +CFLAGS += -g -O0 -rdynamic -Wall -Werror $(KHDR_INCLUDES) -I$(OUTPUT)
> >   CFLAGS += -I$(OUTPUT)/tools/include
> >
> >   LDLIBS += -lelf -lz -lrt -lpthread
> > diff --git a/tools/testing/selftests/nci/Makefile b/tools/testing/selftests/nci/Makefile
> > index 47669a1d6a59..bbc5b8ec3b17 100644
> > --- a/tools/testing/selftests/nci/Makefile
> > +++ b/tools/testing/selftests/nci/Makefile
> > @@ -1,5 +1,5 @@
> >   # SPDX-License-Identifier: GPL-2.0
> > -CFLAGS += -Wl,-no-as-needed -Wall
> > +CFLAGS += -Wl,-no-as-needed -Wall $(KHDR_INCLUDES)
> >   LDFLAGS += -lpthread
> >
> >   TEST_GEN_PROGS := nci_dev
> > diff --git a/tools/testing/selftests/prctl/Makefile b/tools/testing/selftests/prctl/Makefile
> > index 01dc90fbb509..1a0aefec9d6f 100644
> > --- a/tools/testing/selftests/prctl/Makefile
> > +++ b/tools/testing/selftests/prctl/Makefile
> > @@ -6,6 +6,8 @@ ARCH ?= $(shell echo $(uname_M) | sed -e s/i.86/x86/ -e s/x86_64/x86/)
> >   ifeq ($(ARCH),x86)
> >   TEST_PROGS := disable-tsc-ctxt-sw-stress-test disable-tsc-on-off-stress-test \
> >               disable-tsc-test set-anon-vma-name-test set-process-name
> > +
> > +CFLAGS += $(KHDR_INCLUDES)
> >   all: $(TEST_PROGS)
> >
> >   include ../lib.mk
> > diff --git a/tools/testing/selftests/proc/Makefile b/tools/testing/selftests/proc/Makefile
> > index cd95369254c0..9596014c10a0 100644
> > --- a/tools/testing/selftests/proc/Makefile
> > +++ b/tools/testing/selftests/proc/Makefile
> > @@ -1,6 +1,6 @@
> >   # SPDX-License-Identifier: GPL-2.0-only
> >   CFLAGS += -Wall -O2 -Wno-unused-function
> > -CFLAGS += -D_GNU_SOURCE
> > +CFLAGS += $(KHDR_INCLUDES)
> >   LDFLAGS += -pthread
> >
> >   TEST_GEN_PROGS :=
> > diff --git a/tools/testing/selftests/riscv/mm/Makefile b/tools/testing/selftests/riscv/mm/Makefile
> > index c333263f2b27..715a21241113 100644
> > --- a/tools/testing/selftests/riscv/mm/Makefile
> > +++ b/tools/testing/selftests/riscv/mm/Makefile
> > @@ -3,7 +3,7 @@
> >   # Originally tools/testing/arm64/abi/Makefile
> >
> >   # Additional include paths needed by kselftest.h and local headers
> > -CFLAGS += -D_GNU_SOURCE -std=gnu99 -I.
> > +CFLAGS += $(KHDR_INCLUDES) -std=gnu99 -I.
> >
> >   TEST_GEN_FILES := mmap_default mmap_bottomup
> >
> > diff --git a/tools/testing/selftests/rtc/Makefile b/tools/testing/selftests/rtc/Makefile
> > index 55198ecc04db..654f9d58da3c 100644
> > --- a/tools/testing/selftests/rtc/Makefile
> > +++ b/tools/testing/selftests/rtc/Makefile
> > @@ -1,5 +1,5 @@
> >   # SPDX-License-Identifier: GPL-2.0
> > -CFLAGS += -O3 -Wl,-no-as-needed -Wall
> > +CFLAGS += -O3 -Wl,-no-as-needed -Wall $(KHDR_INCLUDES)
> >   LDLIBS += -lrt -lpthread -lm
> >
> >   TEST_GEN_PROGS = rtctest
> > diff --git a/tools/testing/selftests/tmpfs/Makefile b/tools/testing/selftests/tmpfs/Makefile
> > index aa11ccc92e5b..bcdc1bb6d2e6 100644
> > --- a/tools/testing/selftests/tmpfs/Makefile
> > +++ b/tools/testing/selftests/tmpfs/Makefile
> > @@ -1,6 +1,6 @@
> >   # SPDX-License-Identifier: GPL-2.0-only
> >   CFLAGS += -Wall -O2
> > -CFLAGS += -D_GNU_SOURCE
> > +CFLAGS += $(KHDR_INCLUDES)
> >
> >   TEST_GEN_PROGS :=
> >   TEST_GEN_PROGS += bug-link-o-tmpfile
>
>