The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 283ac6d5fb2a47f12bcef7806b78acf6ad89907e Mon Sep 17 00:00:00 2001
From: Shuah Khan shuah@kernel.org Date: Wed, 12 Dec 2018 20:25:14 -0700 Subject: [PATCH] selftests: Fix test errors related to lib.mk khdr target
Commit b2d35fa5fc80 ("selftests: add headers_install to lib.mk") added khdr target to run headers_install target from the main Makefile. The logic uses KSFT_KHDR_INSTALL and top_srcdir as controls to initialize variables and include files to run headers_install from the top level Makefile. There are a few problems with this logic.
1. Exposes top_srcdir to all tests 2. Common logic impacts all tests 3. Uses KSFT_KHDR_INSTALL, top_srcdir, and khdr in an adhoc way. Tests add "khdr" dependency in their Makefiles to TEST_PROGS_EXTENDED in some cases, and STATIC_LIBS in other cases. This makes this framework confusing to use.
The common logic that runs for all tests even when KSFT_KHDR_INSTALL isn't defined by the test. top_srcdir is initialized to a default value when test doesn't initialize it. It works for all tests without a sub-dir structure and tests with sub-dir structure fail to build.
e.g: make -C sparc64/drivers/ or make -C drivers/dma-buf
../../lib.mk:20: ../../../../scripts/subarch.include: No such file or directory make: *** No rule to make target '../../../../scripts/subarch.include'. Stop.
There is no reason to require all tests to define top_srcdir and there is no need to require tests to add khdr dependency using adhoc changes to TEST_* and other variables.
Fix it with a consistent use of KSFT_KHDR_INSTALL and top_srcdir from tests that have the dependency on headers_install.
Change common logic to include khdr target define and "all" target with dependency on khdr when KSFT_KHDR_INSTALL is defined.
Only tests that have dependency on headers_install have to define just the KSFT_KHDR_INSTALL, and top_srcdir variables and there is no need to specify khdr dependency in the test Makefiles.
Fixes: b2d35fa5fc80 ("selftests: add headers_install to lib.mk") Cc: stable@vger.kernel.org Signed-off-by: Shuah Khan shuah@kernel.org Reviewed-by: Khalid Aziz khalid.aziz@oracle.com Reviewed-by: Anders Roxell anders.roxell@linaro.org Signed-off-by: Shuah Khan shuah@kernel.org
diff --git a/tools/testing/selftests/android/Makefile b/tools/testing/selftests/android/Makefile index d9a725478375..72c25a3cb658 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: khdr +all: @for DIR in $(SUBDIRS); do \ BUILD_TARGET=$(OUTPUT)/$$DIR; \ mkdir $$BUILD_TARGET -p; \ diff --git a/tools/testing/selftests/futex/functional/Makefile b/tools/testing/selftests/futex/functional/Makefile index ad1eeb14fda7..30996306cabc 100644 --- a/tools/testing/selftests/futex/functional/Makefile +++ b/tools/testing/selftests/futex/functional/Makefile @@ -19,6 +19,7 @@ TEST_GEN_FILES := \ TEST_PROGS := run.sh
top_srcdir = ../../../../.. +KSFT_KHDR_INSTALL := 1 include ../../lib.mk
$(TEST_GEN_FILES): $(HEADERS) diff --git a/tools/testing/selftests/gpio/Makefile b/tools/testing/selftests/gpio/Makefile index f22b22aef7bf..0bb80619db58 100644 --- a/tools/testing/selftests/gpio/Makefile +++ b/tools/testing/selftests/gpio/Makefile @@ -16,8 +16,6 @@ TEST_PROGS_EXTENDED := gpio-mockup-chardev GPIODIR := $(realpath ../../../gpio) GPIOOBJ := gpio-utils.o
-include ../lib.mk - all: $(TEST_PROGS_EXTENDED)
override define CLEAN @@ -25,7 +23,9 @@ override define CLEAN $(MAKE) -C $(GPIODIR) OUTPUT=$(GPIODIR)/ clean endef
-$(TEST_PROGS_EXTENDED):| khdr +KSFT_KHDR_INSTALL := 1 +include ../lib.mk + $(TEST_PROGS_EXTENDED): $(GPIODIR)/$(GPIOOBJ)
$(GPIODIR)/$(GPIOOBJ): diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile index 01a219229238..52bfe5e76907 100644 --- a/tools/testing/selftests/kvm/Makefile +++ b/tools/testing/selftests/kvm/Makefile @@ -1,6 +1,7 @@ all:
top_srcdir = ../../../.. +KSFT_KHDR_INSTALL := 1 UNAME_M := $(shell uname -m)
LIBKVM = lib/assert.c lib/elf.c lib/io.c lib/kvm_util.c lib/ucall.c lib/sparsebit.c @@ -44,7 +45,6 @@ $(OUTPUT)/libkvm.a: $(LIBKVM_OBJ)
all: $(STATIC_LIBS) $(TEST_GEN_PROGS): $(STATIC_LIBS) -$(STATIC_LIBS):| khdr
cscope: include_paths = $(LINUX_TOOL_INCLUDE) $(LINUX_HDR_PATH) include lib .. cscope: diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk index 0a8e75886224..8b0f16409ed7 100644 --- a/tools/testing/selftests/lib.mk +++ b/tools/testing/selftests/lib.mk @@ -16,18 +16,18 @@ 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))
+ifdef KSFT_KHDR_INSTALL 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 +all: khdr $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) +else +all: $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) endif
.ONESHELL: diff --git a/tools/testing/selftests/networking/timestamping/Makefile b/tools/testing/selftests/networking/timestamping/Makefile index 14cfcf006936..c46c0eefab9e 100644 --- a/tools/testing/selftests/networking/timestamping/Makefile +++ b/tools/testing/selftests/networking/timestamping/Makefile @@ -6,6 +6,7 @@ TEST_PROGS := hwtstamp_config rxtimestamp timestamping txtimestamp all: $(TEST_PROGS)
top_srcdir = ../../../../.. +KSFT_KHDR_INSTALL := 1 include ../../lib.mk
clean: diff --git a/tools/testing/selftests/tc-testing/bpf/Makefile b/tools/testing/selftests/tc-testing/bpf/Makefile index dc92eb271d9a..be5a5e542804 100644 --- a/tools/testing/selftests/tc-testing/bpf/Makefile +++ b/tools/testing/selftests/tc-testing/bpf/Makefile @@ -4,6 +4,7 @@ APIDIR := ../../../../include/uapi TEST_GEN_FILES = action.o
top_srcdir = ../../../../.. +KSFT_KHDR_INSTALL := 1 include ../../lib.mk
CLANG ?= clang diff --git a/tools/testing/selftests/vm/Makefile b/tools/testing/selftests/vm/Makefile index 6e67e726e5a5..e13eb6cc8901 100644 --- a/tools/testing/selftests/vm/Makefile +++ b/tools/testing/selftests/vm/Makefile @@ -25,6 +25,7 @@ TEST_GEN_FILES += virtual_address_range
TEST_PROGS := run_vmtests
+KSFT_KHDR_INSTALL := 1 include ../lib.mk
$(OUTPUT)/userfaultfd: LDLIBS += -lpthread