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libnvdimm, pfn: 'struct page' provider infrastructure

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Implement the base infrastructure for libnvdimm PFN devices. Similar to
BTT devices they take a namespace as a backing device and layer
functionality on top. In this case the functionality is reserving space
for an array of 'struct page' entries to be handed out through
pfn_to_page(). For now this is just the basic libnvdimm-device-model for
configuring the base PFN device.

As the namespace claiming mechanism for PFN devices is mostly identical
to BTT devices drivers/nvdimm/claim.c is created to house the common
bits.

Cc: Ross Zwisler <[email protected]>
Signed-off-by: Dan Williams <[email protected]>
This commit is contained in:
Dan Williams 2015-07-30 17:57:47 -04:00
commit e1455744b2
13 changed files with 719 additions and 177 deletions
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2
tools/testing/nvdimm/Kbuild
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@ -43,7 +43,9 @@ libnvdimm-y += $(NVDIMM_SRC)/region_devs.o
libnvdimm-y += $(NVDIMM_SRC)/region.o
libnvdimm-y += $(NVDIMM_SRC)/namespace_devs.o
libnvdimm-y += $(NVDIMM_SRC)/label.o
libnvdimm-$(CONFIG_ND_CLAIM) += $(NVDIMM_SRC)/claim.o
libnvdimm-$(CONFIG_BTT) += $(NVDIMM_SRC)/btt_devs.o
libnvdimm-$(CONFIG_NVDIMM_PFN) += $(NVDIMM_SRC)/pfn_devs.o
libnvdimm-y += config_check.o
obj-m += test/