| Message ID | 20241116042314.100400-1-yunshenglin0825@gmail.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [net-next] mm: page_frag: fix a compile error when kernel is not compiled | expand |
It seemed that somehow I missed to add the netdev ML:( On 11/16/2024 12:23 PM, Yunsheng Lin wrote: > page_frag test module is an out of tree module, but built > using KDIR as the main kernel tree, the mm test suite is > just getting skipped if newly added page_frag test module > fails to compile due to kernel not yet compiled. > > Fix the above problem by ensuring both kernel is built first > and a newer kernel which has page_frag_cache.h is used. > > CC: Andrew Morton <akpm@linux-foundation.org> > CC: Alexander Duyck <alexanderduyck@fb.com> > CC: Linux-MM <linux-mm@kvack.org> > Fixes: 7fef0dec415c ("mm: page_frag: add a test module for page_frag") > Fixes: 65941f10caf2 ("mm: move the page fragment allocator from page_alloc into its own file") > Reported-by: Mark Brown <broonie@kernel.org> > Signed-off-by: Yunsheng Lin <yunshenglin0825@gmail.com> > --- > Mote, page_frag test module is only in the net-next tree for now, > so target the net-next tree. > --- > tools/testing/selftests/mm/Makefile | 18 ++++++++++++++++++ > tools/testing/selftests/mm/page_frag/Makefile | 2 +- > 2 files changed, 19 insertions(+), 1 deletion(-) > > diff --git a/tools/testing/selftests/mm/Makefile b/tools/testing/selftests/mm/Makefile > index acec529baaca..04e04733fc8a 100644 > --- a/tools/testing/selftests/mm/Makefile > +++ b/tools/testing/selftests/mm/Makefile > @@ -36,7 +36,16 @@ MAKEFLAGS += --no-builtin-rules > CFLAGS = -Wall -I $(top_srcdir) $(EXTRA_CFLAGS) $(KHDR_INCLUDES) $(TOOLS_INCLUDES) > LDLIBS = -lrt -lpthread -lm > > +KDIR ?= /lib/modules/$(shell uname -r)/build > +ifneq (,$(wildcard $(KDIR)/Module.symvers)) > +ifneq (,$(wildcard $(KDIR)/include/linux/page_frag_cache.h)) > TEST_GEN_MODS_DIR := page_frag > +else > +PAGE_FRAG_WARNING = "missing page_frag_cache.h, please use a newer kernel" > +endif > +else > +PAGE_FRAG_WARNING = "missing Module.symvers, please have the kernel built first" > +endif > > TEST_GEN_FILES = cow > TEST_GEN_FILES += compaction_test > @@ -214,3 +223,12 @@ warn_missing_liburing: > echo "Warning: missing liburing support. Some tests will be skipped." ; \ > echo > endif > + > +ifneq ($(PAGE_FRAG_WARNING),) > +all: warn_missing_page_frag > + > +warn_missing_page_frag: > + @echo ; \ > + echo "Warning: $(PAGE_FRAG_WARNING). page_frag test will be skipped." ; \ > + echo > +endif > diff --git a/tools/testing/selftests/mm/page_frag/Makefile b/tools/testing/selftests/mm/page_frag/Makefile > index 58dda74d50a3..8c8bb39ffa28 100644 > --- a/tools/testing/selftests/mm/page_frag/Makefile > +++ b/tools/testing/selftests/mm/page_frag/Makefile > @@ -1,5 +1,5 @@ > PAGE_FRAG_TEST_DIR := $(realpath $(dir $(abspath $(lastword $(MAKEFILE_LIST))))) > -KDIR ?= $(abspath $(PAGE_FRAG_TEST_DIR)/../../../../..) > +KDIR ?= /lib/modules/$(shell uname -r)/build > > ifeq ($(V),1) > Q =
diff --git a/tools/testing/selftests/mm/Makefile b/tools/testing/selftests/mm/Makefile index acec529baaca..04e04733fc8a 100644 --- a/tools/testing/selftests/mm/Makefile +++ b/tools/testing/selftests/mm/Makefile @@ -36,7 +36,16 @@ MAKEFLAGS += --no-builtin-rules CFLAGS = -Wall -I $(top_srcdir) $(EXTRA_CFLAGS) $(KHDR_INCLUDES) $(TOOLS_INCLUDES) LDLIBS = -lrt -lpthread -lm +KDIR ?= /lib/modules/$(shell uname -r)/build +ifneq (,$(wildcard $(KDIR)/Module.symvers)) +ifneq (,$(wildcard $(KDIR)/include/linux/page_frag_cache.h)) TEST_GEN_MODS_DIR := page_frag +else +PAGE_FRAG_WARNING = "missing page_frag_cache.h, please use a newer kernel" +endif +else +PAGE_FRAG_WARNING = "missing Module.symvers, please have the kernel built first" +endif TEST_GEN_FILES = cow TEST_GEN_FILES += compaction_test @@ -214,3 +223,12 @@ warn_missing_liburing: echo "Warning: missing liburing support. Some tests will be skipped." ; \ echo endif + +ifneq ($(PAGE_FRAG_WARNING),) +all: warn_missing_page_frag + +warn_missing_page_frag: + @echo ; \ + echo "Warning: $(PAGE_FRAG_WARNING). page_frag test will be skipped." ; \ + echo +endif diff --git a/tools/testing/selftests/mm/page_frag/Makefile b/tools/testing/selftests/mm/page_frag/Makefile index 58dda74d50a3..8c8bb39ffa28 100644 --- a/tools/testing/selftests/mm/page_frag/Makefile +++ b/tools/testing/selftests/mm/page_frag/Makefile @@ -1,5 +1,5 @@ PAGE_FRAG_TEST_DIR := $(realpath $(dir $(abspath $(lastword $(MAKEFILE_LIST))))) -KDIR ?= $(abspath $(PAGE_FRAG_TEST_DIR)/../../../../..) +KDIR ?= /lib/modules/$(shell uname -r)/build ifeq ($(V),1) Q =
page_frag test module is an out of tree module, but built using KDIR as the main kernel tree, the mm test suite is just getting skipped if newly added page_frag test module fails to compile due to kernel not yet compiled. Fix the above problem by ensuring both kernel is built first and a newer kernel which has page_frag_cache.h is used. CC: Andrew Morton <akpm@linux-foundation.org> CC: Alexander Duyck <alexanderduyck@fb.com> CC: Linux-MM <linux-mm@kvack.org> Fixes: 7fef0dec415c ("mm: page_frag: add a test module for page_frag") Fixes: 65941f10caf2 ("mm: move the page fragment allocator from page_alloc into its own file") Reported-by: Mark Brown <broonie@kernel.org> Signed-off-by: Yunsheng Lin <yunshenglin0825@gmail.com> --- Mote, page_frag test module is only in the net-next tree for now, so target the net-next tree. --- tools/testing/selftests/mm/Makefile | 18 ++++++++++++++++++ tools/testing/selftests/mm/page_frag/Makefile | 2 +- 2 files changed, 19 insertions(+), 1 deletion(-)