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| author | Dan Williams <dan.j.williams@intel.com> | 2015-08-01 08:16:37 +0200 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2015-08-29 05:40:04 +0200 |
| commit | 32ab0a3f51701cb37ab960635254d5f84ec3de0a (patch) | |
| tree | 5e6ff1b400f4f1c42c7aecc76234f007d70e6a25 /tools | |
| parent | libnvdimm, pfn: 'struct page' provider infrastructure (diff) | |
| download | linux-32ab0a3f51701cb37ab960635254d5f84ec3de0a.tar.xz linux-32ab0a3f51701cb37ab960635254d5f84ec3de0a.zip | |
libnvdimm, pmem: 'struct page' for pmem
Enable the pmem driver to handle PFN device instances. Attaching a pmem
namespace to a pfn device triggers the driver to allocate and initialize
struct page entries for pmem. Memory capacity for this allocation comes
exclusively from RAM for now which is suitable for low PMEM to RAM
ratios. This mechanism will be expanded later for setting an "allocate
from PMEM" policy.
Cc: Boaz Harrosh <boaz@plexistor.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/nvdimm/Kbuild | 1 | ||||
| -rw-r--r-- | tools/testing/nvdimm/test/iomap.c | 13 |
2 files changed, 14 insertions, 0 deletions
diff --git a/tools/testing/nvdimm/Kbuild b/tools/testing/nvdimm/Kbuild index 99e70f0729be..38b00ecb2ed5 100644 --- a/tools/testing/nvdimm/Kbuild +++ b/tools/testing/nvdimm/Kbuild @@ -2,6 +2,7 @@ ldflags-y += --wrap=ioremap_wc ldflags-y += --wrap=memremap ldflags-y += --wrap=devm_ioremap_nocache ldflags-y += --wrap=devm_memremap +ldflags-y += --wrap=devm_memunmap ldflags-y += --wrap=ioremap_nocache ldflags-y += --wrap=iounmap ldflags-y += --wrap=memunmap diff --git a/tools/testing/nvdimm/test/iomap.c b/tools/testing/nvdimm/test/iomap.c index 179d2289f3a8..b7251314bbc0 100644 --- a/tools/testing/nvdimm/test/iomap.c +++ b/tools/testing/nvdimm/test/iomap.c @@ -108,6 +108,19 @@ void *__wrap_memremap(resource_size_t offset, size_t size, } EXPORT_SYMBOL(__wrap_memremap); +void __wrap_devm_memunmap(struct device *dev, void *addr) +{ + struct nfit_test_resource *nfit_res; + + rcu_read_lock(); + nfit_res = get_nfit_res((unsigned long) addr); + rcu_read_unlock(); + if (nfit_res) + return; + return devm_memunmap(dev, addr); +} +EXPORT_SYMBOL(__wrap_devm_memunmap); + void __iomem *__wrap_ioremap_nocache(resource_size_t offset, unsigned long size) { return __nfit_test_ioremap(offset, size, ioremap_nocache); |