From 730926c3b0998943654019f00296cf8e3b02277e Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Sun, 16 Jul 2017 13:51:53 -0700 Subject: device-dax: Add /sys/class/dax backwards compatibility On the expectation that some environments may not upgrade libdaxctl (userspace component that depends on the /sys/class/dax hierarchy), provide a default / legacy dax_pmem_compat driver. The dax_pmem_compat driver implements the original /sys/class/dax sysfs layout rather than /sys/bus/dax. When userspace is upgraded it can blacklist this module and switch to the dax_pmem driver going forward. CONFIG_DEV_DAX_PMEM_COMPAT and supporting code will be deleted according to the dax_pmem entry in Documentation/ABI/obsolete/. Signed-off-by: Dan Williams --- tools/testing/nvdimm/Kbuild | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/nvdimm/Kbuild b/tools/testing/nvdimm/Kbuild index c9b500a652d5..e1286d2cdfbf 100644 --- a/tools/testing/nvdimm/Kbuild +++ b/tools/testing/nvdimm/Kbuild @@ -35,6 +35,8 @@ obj-$(CONFIG_DAX) += dax.o endif obj-$(CONFIG_DEV_DAX) += device_dax.o obj-$(CONFIG_DEV_DAX_PMEM) += dax_pmem.o +obj-$(CONFIG_DEV_DAX_PMEM) += dax_pmem_core.o +obj-$(CONFIG_DEV_DAX_PMEM_COMPAT) += dax_pmem_compat.o nfit-y := $(ACPI_SRC)/core.o nfit-y += $(ACPI_SRC)/intel.o @@ -65,7 +67,9 @@ device_dax-y += dax-dev.o device_dax-y += device_dax_test.o device_dax-y += config_check.o -dax_pmem-y := $(DAX_SRC)/pmem.o +dax_pmem-y := $(DAX_SRC)/pmem/pmem.o +dax_pmem_core-y := $(DAX_SRC)/pmem/core.o +dax_pmem_compat-y := $(DAX_SRC)/pmem/compat.o dax_pmem-y += config_check.o libnvdimm-y := $(NVDIMM_SRC)/core.o -- cgit v1.2.3