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authorDan Williams <dan.j.williams@intel.com>2015-06-09 14:13:37 -0400
committerDan Williams <dan.j.williams@intel.com>2015-06-24 21:24:10 -0400
commit18da2c9ee41a036bf470dbad73c18a815725d36e (patch)
treec69bb8f44dcb1df4c7579184c3051e5b51729d87
parent3d88002e4a7bd40f355550284c6cd140e6fe29dc (diff)
downloadlinux-18da2c9ee41a036bf470dbad73c18a815725d36e.tar.bz2
libnvdimm, pmem: move pmem to drivers/nvdimm/
Prepare the pmem driver to consume PMEM namespaces emitted by regions of an nvdimm_bus instance. No functional change. Acked-by: Christoph Hellwig <hch@lst.de> Tested-by: Toshi Kani <toshi.kani@hp.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
-rw-r--r--drivers/block/Kconfig11
-rw-r--r--drivers/block/Makefile1
-rw-r--r--drivers/nvdimm/Kconfig23
-rw-r--r--drivers/nvdimm/Makefile3
-rw-r--r--drivers/nvdimm/pmem.c (renamed from drivers/block/pmem.c)0
5 files changed, 25 insertions, 13 deletions
diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
index eb1fed5bd516..1b8094d4d7af 100644
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@ -404,17 +404,6 @@ config BLK_DEV_RAM_DAX
and will prevent RAM block device backing store memory from being
allocated from highmem (only a problem for highmem systems).
-config BLK_DEV_PMEM
- tristate "Persistent memory block device support"
- help
- Saying Y here will allow you to use a contiguous range of reserved
- memory as one or more persistent block devices.
-
- To compile this driver as a module, choose M here: the module will be
- called 'pmem'.
-
- If unsure, say N.
-
config CDROM_PKTCDVD
tristate "Packet writing on CD/DVD media"
depends on !UML
diff --git a/drivers/block/Makefile b/drivers/block/Makefile
index 9cc6c18a1c7e..02b688d1438d 100644
--- a/drivers/block/Makefile
+++ b/drivers/block/Makefile
@@ -14,7 +14,6 @@ obj-$(CONFIG_PS3_VRAM) += ps3vram.o
obj-$(CONFIG_ATARI_FLOPPY) += ataflop.o
obj-$(CONFIG_AMIGA_Z2RAM) += z2ram.o
obj-$(CONFIG_BLK_DEV_RAM) += brd.o
-obj-$(CONFIG_BLK_DEV_PMEM) += pmem.o
obj-$(CONFIG_BLK_DEV_LOOP) += loop.o
obj-$(CONFIG_BLK_CPQ_DA) += cpqarray.o
obj-$(CONFIG_BLK_CPQ_CISS_DA) += cciss.o
diff --git a/drivers/nvdimm/Kconfig b/drivers/nvdimm/Kconfig
index 92933551f846..07a29113b870 100644
--- a/drivers/nvdimm/Kconfig
+++ b/drivers/nvdimm/Kconfig
@@ -1,4 +1,4 @@
-config LIBNVDIMM
+menuconfig LIBNVDIMM
tristate "NVDIMM (Non-Volatile Memory Device) Support"
depends on PHYS_ADDR_T_64BIT
depends on BLK_DEV
@@ -13,3 +13,24 @@ config LIBNVDIMM
CONFIG_DAX). A BLK namespace refers to an NVDIMM control
region which exposes an mmio register set for windowed
access mode to non-volatile memory.
+
+if LIBNVDIMM
+
+config BLK_DEV_PMEM
+ tristate "PMEM: Persistent memory block device support"
+ default LIBNVDIMM
+ depends on HAS_IOMEM
+ help
+ Memory ranges for PMEM are described by either an NFIT
+ (NVDIMM Firmware Interface Table, see CONFIG_NFIT_ACPI), a
+ non-standard OEM-specific E820 memory type (type-12, see
+ CONFIG_X86_PMEM_LEGACY), or it is manually specified by the
+ 'memmap=nn[KMG]!ss[KMG]' kernel command line (see
+ Documentation/kernel-parameters.txt). This driver converts
+ these persistent memory ranges into block devices that are
+ capable of DAX (direct-access) file system mappings. See
+ Documentation/nvdimm/nvdimm.txt for more details.
+
+ Say Y if you want to use an NVDIMM
+
+endif
diff --git a/drivers/nvdimm/Makefile b/drivers/nvdimm/Makefile
index af5e2760ddbd..4d2a27f52faa 100644
--- a/drivers/nvdimm/Makefile
+++ b/drivers/nvdimm/Makefile
@@ -1,4 +1,7 @@
obj-$(CONFIG_LIBNVDIMM) += libnvdimm.o
+obj-$(CONFIG_BLK_DEV_PMEM) += nd_pmem.o
+
+nd_pmem-y := pmem.o
libnvdimm-y := core.o
libnvdimm-y += bus.o
diff --git a/drivers/block/pmem.c b/drivers/nvdimm/pmem.c
index eabf4a8d0085..eabf4a8d0085 100644
--- a/drivers/block/pmem.c
+++ b/drivers/nvdimm/pmem.c